CN101840745A - Preparation method of conductive plastics master batch containing stainless steel fibers - Google Patents
Preparation method of conductive plastics master batch containing stainless steel fibers Download PDFInfo
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- CN101840745A CN101840745A CN201010140117A CN201010140117A CN101840745A CN 101840745 A CN101840745 A CN 101840745A CN 201010140117 A CN201010140117 A CN 201010140117A CN 201010140117 A CN201010140117 A CN 201010140117A CN 101840745 A CN101840745 A CN 101840745A
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Abstract
The invention discloses a preparation method of a conductive plastics master batch containing stainless steel fibers. The stainless steel fibers in the plastics master batch are isolated by macromolecular materials and completely packed by the macromolecular materials. When the plastics master batch as raw materials is mixed with plastics for secondary granulation or a conductive plastic work-piece is formed, the stainless steel fibers can resist high shear force when the plastics are processed, and are easily and uniformly dispersed in the plastic work-piece and overlap to each other to form a three-dimensional conductive network. By adopting the conductive plastics master batch, the ideal antistatic and electromagnetic screen effects can be achieved under the circumstance of low content of the stainless steel fiber.
Description
Technical field
The invention belongs to the organic electronic material technical field, be specifically related to a kind of manufacture method that includes the conductive plastic base particle of stainless steel fibre.
Background technology
Conductive plastics is the functional plastics that a kind of novel antistatic and anti-electromagnetic wave disturb, and is the novel organic electronic material that adopts the market in urgent need that new and high technology successfully develops.Conductive plastics is the composite material that is mixed and made into by conducting medium and plastics, and the kind of conducting medium and dispersing uniformity are the key factors that influences the conductive plastics performance.Usually the conducting medium of selecting for use at present has conductive powder (as carbon black, metal powder etc.) and conductive fiber (as stainless steel fibre, carbon fiber and nickel-coated carbon fibers etc.).
Conductive powder is in contact with one another the formation conductive network in matrix, therefore generally need bigger addition, increases cost on the one hand, may the performance of matrix be impacted on the other hand.Conductive fiber has certain draw ratio, in matrix, evenly disperse the back to form conductive network easily, therefore just can reach good electric conductivity as long as add less amount, but bonding is agglomerating mutually easily for conductive fiber, therefore how fracture easily in follow-up plastic shaping process solves and is uniformly dispersed and keeps higher draw ratio just to become the key technology of conductive fiber as conducting medium.
The conductive plastics that with the stainless steel fibre is the conducting medium preparation has multiple functions such as antistatic, anti-electromagnetic radiation, anti-radar detecting and Tempest, has high, the practical characteristic of stability simultaneously again, has at first obtained fast development in military domain.Civil area such as bank, telecommunications, mainframe computer machine room, microwave station, e-factory all adopt conductive plastics to reduce hazards of electromagnetic radiation.Particularly, the conductive plastic base particle that contains stainless steel fibre can be widely used in following aspect:
1) the antistatic Turnover Box that in electronics, electrical equipment production process, uses, IC and LCD pallet, IC encapsulation, chip carrier, bag film etc.;
2) shell of anti-explosion product and structural member, as: the electric equipment products shell and the structural member that use in the occasions such as colliery, oil carrier, oil field, dust and fuel gas;
3) semi-conductive shielding material that uses in the middle and high voltage cable;
4) telecommunication, computer, automated system, industrial electronics product, consumption are with the electric equipment products screening can in the fields such as electronic product;
5) produce static in the time of in fuel filter, can preventing gasoline through filter;
6) portable survey tool shell.
Retrieval is relevant patent both at home and abroad, mainly contain following: domestic patent " preparation method of novel electromagnetic shielding plastic master batch and composite plastic " (publication number: CN101085842), domestic patent " granular composite material of metal fiber and manufacture method thereof " (publication number: CN1415649), domestic patent " a kind of conductive plastics and processing method thereof, processing unit (plant) " (patent No.: ZL 200510086201.9), the information of other patents all has introduction in above three patents, no longer do comparative analysis here.
Wherein, the process of publication number CN1415649 still exists following problem: 1) just simply described a kind of processing thought, as everyone knows, organic of a great variety, equally play the thousands of kinds of having of surface modification effect, so the actual directive significance of patent CN1 415649 is very limited; 2) do not solve the hydrophilic problem of material surface, cause fiber to be difficult for being distributed in the plastic substrate and go, the effectiveness of finished product is relatively poor.
Summary of the invention
The object of the present invention is to provide a kind of manufacture method that includes the plastic master batch of stainless steel fibre.Stainless steel fibre in this kind plastic master batch is wrapped up by macromolecular material fully and isolates mutually.With plastic master batch of the present invention is raw material, when the conductive plastic articles moulding, and the high shear force when stainless steel fibre can be resisted plastic processing, and easily in plastic part, evenly disperse, fully overlap, form the conductive network of three-dimensional shape.Use conductive plastic base particle of the present invention, can be issued to desirable antistatic and effectiveness in the low situation of stainless steel fibre content.
Technology of the present invention discloses a kind of manufacture method that includes the conductive plastic base particle of stainless steel fibre, by stainless steel fibre is anticipated and coated, makes stainless steel fibre can evenly spread in the plastic substrate and keeps higher draw ratio.
Above-mentioned purpose of the present invention is achieved in that
Technology of the present invention comprises following preparation process:
1) a branch of continuous stainless steel fibre is immersed the modification that is coupled in the surface modification agent solution and handle, make it have the lipophile modified surface; Guarantee that whole bundle stainless steel fibre is fluffy, under the prerequisite of abundant infiltration, the stretching stainless fiber beam of trying one's best; Oven dry;
2) will be through 1) the stainless steel fibre importing handled of step contains in first macromolecular material and coats, and makes this first macromolecular material each root fiber surface formation coating layer in this bundle stainless steel fibre;
3) this bundle stainless steel fibre that will form coating layer by pelleter cuts into the approximate circle cylinder;
Described surface modification agent solution is selected from: a kind of in aqueous solution of ester, the dimethyl acetic acid amine aqueous solution in ethanolic solution, phosphoric acid half ester ethoxylated alcohol two sodium water solutions, the 3-aminopropyl triethoxysilane aqueous solution, Di(dioctylpyrophosphato) ethylene titanate b propanol solution, the dodecyl dimethyl amine second of sulfo-succinic acid tricosyl sodium salt ethanolic solution, sulfo-succinic acid dioctyl sodium salt ethanolic solution, alkylamine guanidine polyoxy.
The inventor thinks should form uniform monolayer on the stainless steel fibre surface under the surface modifier perfect condition, by the accumulation of inventor's persevering endeavors for many years and associated production experience, a kind of work surface coupling processing that the inventor finds to be selected from the above surface modification agent solution then can reach this kind effect substantially just.
The further treatment process of the present invention is:
1) a branch of continuous stainless steel fibre is immersed the modification that is coupled in the surface modification agent solution and handle, make it have the lipophile modified surface; Guarantee that whole bundle stainless steel fibre is fluffy, under the prerequisite of abundant infiltration, the stretching stainless fiber beam of trying one's best; Oven dry;
2) will be through 1) the stainless steel fibre importing handled of step contains in first macromolecular material and coats, and makes this first macromolecular material each root fiber surface formation coating layer in this bundle stainless steel fibre;
3) stainless steel fibre that will coat first macromolecular material imports in second macromolecular material and coats, and makes this second macromolecular material form coating layer (part master batch product can omit this step) at the whole outer surface of this bundle stainless steel fibre.
4) will restraint the approximate circle cylinder that stainless steel fibre cuts into 2～12mm length by pelleter.
Adopt processing method of the present invention, except can accurately controlling the content of stainless steel fibre in the plastic master batch, the master batch for preparing has the neat characteristics of outward appearance, thereby can guarantee carrying out smoothly of follow-up plastic processing process, made conductive plastics has excellent antistatic and capability of electromagnetic shielding, and processing method technology of the present invention is simple, and the reliability height can satisfy the requirement of industrial-scale production.
Just can obtain containing the conductive plastic base particle of stainless steel fibre according to above method, comprise a branch of stainless steel fibre, every stainless steel fibre parallel array.Each root stainless steel fibre is handled through surface coupling modification, has the lipophilic surface, and this lipophilic surface with mix in order to first macromolecular material that coats, each root fiber surface coats first macromolecular material and is tightly sticked together by first macromolecular material.Second macromolecular material forms a coating layer at whole bundle stainless steel fibre outer surface.
Described stainless steel fibre is a stainless steel fibre high-strength, high-ductility, and the equivalent diameter of fibre bundle is not more than 3mm.
The diameter of described stainless steel fibre is 3～100um, and draw ratio is 100～2000.
The ratio 10～95% (v%) of stainless steel fibre in the described conductive plastic base particle.
The inventor finds that also the surface modification agent solution that is selected from following concentration can reach better treatment state: i.e. sulfo-succinic acid tricosyl sodium salt ethanolic solution, and concentration 1%～20% (mass percent, i.e. Wt%), as follows; Sulfo-succinic acid dioctyl sodium salt ethanolic solution, concentration 2%～20% (Wt%); Alkylamine guanidine polyoxy is for ethanolic solution, concentration 1%～5% (Wt%); Phosphoric acid half ester ethoxylated alcohol two sodium water solutions, concentration 1%～5% (Wt%); The 3-aminopropyl triethoxysilane aqueous solution, concentration 2%～10% (Wt%); Di(dioctylpyrophosphato) ethylene titanate b propanol solution, concentration 2%～10% (Wt%); Aqueous solution of ester in the dodecyl dimethyl amine second, concentration 2%～10% (Wt%); The dimethyl acetic acid amine aqueous solution, concentration 1%～10% (Wt%);
The substrate macromolecule material of described first macromolecular material and plastic device mixes, and molecular weight is between 500～20000.The first macromolecular material wiring solution-forming is coated the stainless steel fibre of handling, described first macromolecule material solution can be selected from: polyoxyethylene polyoxypropylene block type polyethers (ethanolic solution), molecular weight between 1500～5000, concentration 4%～50% (Wt%); Polyol ester is (as Glycolabe
R180, Glycolabe
RCyclohexanone solution such as vl), concentration 3%～50% (Wt%); Polyester (as the methoxyl group butyl acetate solution of propoxyl group bisphenol-A fumaric resin), concentration 2%～40% (Wt%); Solvent epoxy varnish, concentration 3%～40% (Wt%).
The substrate macromolecule material of described second macromolecular material and plastic device is identical or part is identical, should mix when part is identical, and as PC, PE, PP, ABS, PET etc.
Described first macromolecular material, second macromolecular material can be the combinations of multiple macromolecular material.
The present invention compared with prior art has following characteristics:
1) describes a kind of manufacture method of stainless steel fibre conductive plastic base particle in detail, the conductive plastics that uses this master batch production separately is under the low situation of stainless steel fibre content, can reach desirable antistatic and effectiveness: stainless steel fibre content reaches 0.6% (v%), and conductive plastics has antistatic effect; Stainless steel fibre content reaches 0.8% (v%), and conductive plastics has effectiveness.
2) conductive plastic base particle that patent is made according to the present invention can be pressed the arbitrary proportion mixing with plastics according to the conductive plastics performance requirement and make the conductive plastics particle, obtain having the plastic device of conducting function after manufacturer can use common plastic extruding machine with the extrusion modling of conductive plastics particle, perhaps conductive plastic base particle is mixed directly being squeezed into plastic device according to the conductive plastics performance requirement with plastics by arbitrary proportion by common plastic extruding machine.This compares with other patents, and the conductive plastics technological process is short, and process equipment is simple, and adaptability is strong, is particularly suitable for large-scale production, use.
3) in the conductive plastic base particle manufacturing process stainless steel fibre is not almost damaged, stainless steel fibre is also only through shear history once or twice in the course of processing of follow-up conductive plastics, and because the conductive plastic base particle manufacturing process of uniqueness of the present invention, stainless steel fibre is very easy to evenly spread in the plastic substrate, therefore stainless steel fibre suffered damage in the whole production course of processing is very little, and the draw ratio of fiber is higher in the finished product device.Under the same amount, the finished product device has antistatic and capability of electromagnetic shielding preferably.
4) utilize conductive plastic base particle provided by the invention to mix in the plastic device of making the back with plastics, stainless steel fibre fully mixes with plastic substrate, it is any position that stainless steel fibre is dispersed in plastic substrate, therefore the conducting function of plastic device has the identical life-span with plastic device, and stable performance.
Description of drawings
Fig. 1 is the conductive plastic base particle internal structure sem photograph of embodiment one of the present invention;
Fig. 2 A and 2B are conductive plastic base particle schematic appearance and the cross section schematic diagram that contains stainless steel fibre of the present invention;
Fig. 3 is the processing method flow chart that contains the conductive plastic base particle of stainless steel fibre of the present invention.
Embodiment
Below by specific embodiment the present invention is described in detail.
The invention provides a kind of manufacture method that includes the conductive plastic base particle of stainless steel fibre.Stainless steel fibre in this kind plastic master batch is isolated by macromolecular material, and is wrapped up by macromolecular material fully.Fig. 2 A and Fig. 2 B are the structural representation that contains the plastic master batch 20 of stainless steel fibre of the present invention, it is characterized in that comprising a branch of stainless steel fibre 21, every stainless steel fibre parallel array, each root stainless steel fibre is handled through surface coupling modification, have lipophilic surface 22, and this lipophilic surface with mix in order to first macromolecular material 23 that coats.Each root fiber surface coats first macromolecular material and is tightly sticked together by first macromolecular material.Second macromolecular material 24 forms a coating layer at whole bundle stainless steel fibre outer surface.
Described stainless steel fibre is a stainless steel fibre high-strength, high-ductility, and the equivalent diameter of fibre bundle is not more than 3mm.
The diameter of described stainless steel fibre is 3～100um, and draw ratio is 100～2000.
The ratio 10～95% (v%) of stainless steel fibre in the described conductive plastic base particle.
Should form uniform monolayer on the stainless steel fibre surface under the described surface modifier perfect condition, the surface modification agent solution of indication of the present invention is selected from following a kind of, then can reach this kind effect substantially: i.e. sulfo-succinic acid tricosyl sodium salt ethanolic solution, concentration 1%～20% (Wt%); Sulfo-succinic acid dioctyl sodium salt ethanolic solution, concentration 2%～20% (Wt%); Alkylamine guanidine polyoxy is for ethanolic solution, and concentration is less than 1%～5%; Phosphoric acid half ester ethoxylated alcohol two sodium water solutions, concentration is less than 1%～5%; The 3-aminopropyl triethoxysilane aqueous solution, concentration 2%～10%; Di(dioctylpyrophosphato) ethylene titanate b propanol solution, concentration 2%～10%; Aqueous solution of ester in the dodecyl dimethyl amine second, concentration 2%～10%; The dimethyl acetic acid amine aqueous solution, concentration 1%～10%;
Described first macromolecular material should mix with the substrate macromolecule material of plastic device, and molecular weight can be between 500～20000.As: polyoxyethylene polyoxypropylene block type polyethers (ethanolic solution), between the molecular weight 1500～5000, concentration is less than 50% (Wt%); Polyol ester is (as Glycolabe
R180, Glycolabe
RCyclohexanone solution such as vl), concentration is less than 50% (Wt%); Polyester (as the methoxyl group butyl acetate solution of propoxyl group bisphenol-A fumaric resin), concentration is less than 40% (Wt%); Solvent epoxy varnish, concentration is less than 40% (Wt%).First macromolecular material should be easy to combine with surface modifier, certain group of first macromolecular material can with modifier generation chemical reaction or physical bond, as crosslinked.
The substrate macromolecule material of described second macromolecular material and plastic device is identical or part is identical, should mix when part is identical, and as PC, PE, PP, ABS, PET etc.
Described first macromolecular material, second macromolecular material can be the combinations of multiple macromolecular material.
Shown in Fig. 2 A and Fig. 2 B, plastic master batch 20 constructed in accordance is the granular polymer composite of approximate cylinder for outward appearance.The end of stainless fiber beam in this plastic master batch from this cylindrical particles extends to the other end.
The plastic master batch that contains stainless steel fibre constructed in accordance can adopt processing modes such as injection moulding, extrusion molding or die cast as the materials of conductive plastic articles.
Embodiment one
In present embodiment one, the diameter of the stainless steel fibre in the described plastic master batch that contains stainless steel fibre is 12 μ m, and length is 6mm, and the shared volume ratio of stainless steel fibre is 25%.Concrete production process is:
1) a branch of continuous stainless steel fibre being immersed concentration is that the modification that is coupled of the sulfo-succinic acid tricosyl sodium salt ethanolic solution of 3% (Wt%) is handled, and makes it have the lipophile modified surface.Guarantee that whole bundle stainless steel fibre is fluffy, under the prerequisite of abundant infiltration, the stretching stainless fiber beam of trying one's best.Dry the stainless fiber beam of treated mistake.
2) with 1) in the step stainless steel fibre to import concentration be that the polyoxyethylene polyoxypropylene block type polyethers ethanolic solution (molecular weight about 2600) of 35% (Wt%) coats, make this polyoxyethylene polyoxypropylene block type polyethers each root fiber surface in this bundle stainless steel fibre form coating layer, oven dry; This coating layer proportion in the finished product master batch is 10% (Wt%).
3) stainless steel fibre that will coat polyoxyethylene polyoxypropylene block type polyethers imports in the PC material and coats, make this second macromolecular material form coating layer at the whole outer surface of this bundle stainless steel fibre, this coating layer proportion in the finished product master batch is 15% (Wt%).
4) will restraint the small cylinder that stainless steel fibre cuts off growth 6mm by pelleter.
The internal structure ESEM of the plastic master batch of present embodiment as shown in Figure 1, as seen from the figure, fiber is parallel array, every stainless steel fibre is all coated by macromolecular material, is isolated by this macromolecular material between fiber.With PC is main material, as additive, adopts the direct injection moulding PC of single screw injection molding machine conductive plastics test sample plate with the plastic master batch of present embodiment, carries out the electromagnet shield effect test, and test result sees Table 1.Test sample plate is of a size of 150mm * 150mm, thickness 3mm.
Table 1: electromagnet shield effect test result (embodiment one)
As can be seen from Table 1, the conductive plastics made from the plastic master batch of present embodiment has extraordinary effectiveness.
Embodiment two
Compare with embodiment one, the diameter that contains the stainless steel fibre in the plastic master batch of stainless steel fibre among the embodiment two is similarly 12 μ m, and length is similarly 6mm, and the stainless steel fibre content that different is in the plastic master batch is 30v%.Concrete production process is:
1) a branch of continuous stainless steel fibre being immersed concentration is that the modification that is coupled of the 3-aminopropyl triethoxysilane aqueous solution of 3% (Wt%) is handled, and makes it have the lipophile modified surface.Guarantee that whole bundle stainless steel fibre is fluffy, under the prerequisite of abundant infiltration, the stretching stainless fiber beam of trying one's best.
2) the methoxyl group butyl acetate solution that stainless steel fibre is imported concentration 30% (Wt%) propoxyl group bisphenol-A fumaric resin coats, make this propoxyl group bisphenol-A fumaric resin each root fiber surface in this bundle stainless steel fibre form coating layer, this coating layer proportion in the finished product master batch is 10% (Wt%).
3) stainless steel fibre that will coat propoxyl group bisphenol-A fumaric resin imports in the PC material and coats, make this second macromolecular material form coating layer at the whole outer surface of this bundle stainless steel fibre, this coating layer proportion in the finished product master batch is 15% (Wt%).
4) will restraint the small cylinder that stainless steel fibre cuts off growth 6mm by pelleter.
Before injection moulding, plastic master batch and the PC material with present embodiment is mixed and made into the secondary pellet by comminutor in advance, and then with this secondary pellet injection molding machine injection moulding PC test sample plate, carries out the electromagnet shield effect test, the results are shown in Table 2.Test condition is identical with embodiment one.
Table 2 electromagnet shield effect test result (embodiment two)
Contrast table 1 and table 2, as can be seen, the stainless steel fibre in embodiment two is through twice processing, bear the effect of twice high shear force, though be subjected to some damages, still can in plastic part, form the favorable conductive network, so conductive plastic articles still can have obtained preferable shield effectiveness.
Embodiment three
In present embodiment three, the diameter of the stainless steel fibre in the described plastic master batch that contains stainless steel fibre is 12 μ m, and length is 6mm, and the shared volume ratio of stainless steel fibre is about 92%.Concrete production process is:
1) a branch of continuous stainless steel fibre being immersed concentration is that the modification that is coupled of the Di(dioctylpyrophosphato) ethylene titanate b propanol solution of 5% (Wt%) is handled, and makes it have the lipophile modified surface.Guarantee that whole bundle stainless steel fibre is fluffy, under the prerequisite of abundant infiltration, the stretching stainless fiber beam of trying one's best.Dry the stainless fiber beam of treated mistake.
2) with 1) in the step stainless steel fibre to import concentration be that the methoxyl group butyl acetate solution of concentration 30% (Wt%) propoxyl group bisphenol-A fumaric resin coats, make this propoxyl group bisphenol-A fumaric resin each root fiber surface in this bundle stainless steel fibre form coating layer, oven dry; This coating layer proportion in the finished product master batch is 10% (Wt%).
3) will restraint the small cylinder that stainless steel fibre cuts off growth 6mm by pelleter.
As additive, adopt the direct injection moulding PC of single screw injection molding machine conductive plastics test sample plate with the plastic master batch of present embodiment, carry out the electromagnet shield effect test, test result sees Table 3.Test sample plate is of a size of 150mm * 150mm, thickness 3mm.
Table 1: electromagnet shield effect test result (embodiment three)
As can be seen from Table 3,, compare with embodiment one because do not coat second macromolecular material with the plastic master batch of present embodiment, screw rod shearing power is bigger to the fiber influence when injection moulding, and shielding properties is lower slightly, but still good shield effectiveness is arranged.
Embodiment four
Compare with embodiment one, the diameter that contains the stainless steel fibre in the plastic master batch of stainless steel fibre among the embodiment four is similarly 12 μ m, length is similarly 6mm, and the shared volume ratio of stainless steel fibre is with 25%, and the stainless steel fibre content that different is in the finished product is very low.Concrete production process is:
1) a branch of continuous stainless steel fibre is immersed in the dodecyl dimethyl amine second that concentration is 3% (Wt%) the aqueous solution of ester modification that is coupled and handle, make it have the lipophile modified surface.Guarantee that whole bundle stainless steel fibre is fluffy, under the prerequisite of abundant infiltration, the stretching stainless fiber beam of trying one's best.Dry the stainless fiber beam of treated mistake.
2) with 1) in the step stainless steel fibre to import concentration be that the polyoxyethylene polyoxypropylene block type polyethers ethanolic solution (molecular weight about 2600) of 35% (Wt%) coats, make this polyoxyethylene polyoxypropylene block type polyethers each root fiber surface in this bundle stainless steel fibre form coating layer, oven dry; This coating layer proportion in the finished product master batch is 10% (Wt%).
3) stainless steel fibre that will coat polyoxyethylene polyoxypropylene block type polyethers imports in the PC material and coats, make this second macromolecular material form coating layer at the whole outer surface of this bundle stainless steel fibre, this coating layer proportion in the finished product master batch is 15% (Wt%).
4) will restraint the small cylinder that stainless steel fibre cuts off growth 6mm by pelleter.
With PC is main material, as additive, adopts the direct injection moulding PC of single screw injection molding machine conductive plastics test sample plate with the plastic master batch of present embodiment, carries out the electromagnet shield effect test, and test result sees Table 1.Test sample plate is of a size of 150mm * 150mm, thickness 3mm.
Table 4: electromagnet shield effect test result (embodiment four)
As can be seen from Table 4, the conductive plastics made from the plastic master batch of present embodiment still has effectiveness preferably under the low-down situation of stainless steel fibre content.
Embodiment five
Compare with embodiment four, the diameter that contains the stainless steel fibre in the plastic master batch of stainless steel fibre among the embodiment five is similarly 12 μ m, length is similarly 6mm, the shared volume ratio of stainless steel fibre is with 25%, the stainless steel fibre content that different is in the finished product is lower, and finished product can play good anti-static effect.Concrete production process is:
1) a branch of continuous stainless steel fibre being immersed concentration is that the modification that is coupled of the sulfo-succinic acid tricosyl sodium salt ethanolic solution of 3% (Wt%) is handled, and makes it have the lipophile modified surface.Guarantee that whole bundle stainless steel fibre is fluffy, under the prerequisite of abundant infiltration, the stretching stainless fiber beam of trying one's best.Dry the stainless fiber beam of treated mistake.
2) with 1) in the step stainless steel fibre to import concentration be that the polyoxyethylene polyoxypropylene block type polyethers ethanolic solution (molecular weight about 2600) of 35% (Wt%) coats, make this polyoxyethylene polyoxypropylene block type polyethers each root fiber surface in this bundle stainless steel fibre form coating layer, oven dry; This coating layer proportion in the finished product master batch is 10% (Wt%).
3) stainless steel fibre that will coat polyoxyethylene polyoxypropylene block type polyethers imports in the PC material and coats, make this second macromolecular material form coating layer at the whole outer surface of this bundle stainless steel fibre, this coating layer proportion in the finished product master batch is 15% (Wt%).
4) will restraint the small cylinder that stainless steel fibre cuts off growth 6mm by pelleter.
With PC is main material, as additive, adopts the direct injection moulding PVC of single screw injection molding machine conductive plastics test sample plate with the plastic master batch of present embodiment, carries out the electromagnet shield effect test, and test result sees Table 5.Test sample plate is of a size of 150mm * 150mm, thickness 3mm.
Table 5: electromagnet shield effect test result (embodiment five)
| Project | Stainless steel fibre content (Vol.%) | Specific insulation (Ω m) |
| ??PC | ??0.6 | ????＜10 3 |
As can be seen from Table 5, the conductive plastics made from the plastic master batch of present embodiment still has smaller volume resistivity under the low-down situation of stainless steel fibre content, have the good anti-static effect.
The present invention also provides the processing method corresponding to the plastic master batch among the embodiment one, as shown in Figure 3, may further comprise the steps:
1) a branch of continuous stainless steel fibre is immersed the modification that is coupled in the surface modifier and handle, make it have the lipophile modified surface.
2) stainless steel fibre is imported first macromolecular material and coat, make this first macromolecular material each root fiber surface in this bundle stainless steel fibre form coating layer.
3) stainless steel fibre that will coat first macromolecular material imports second macromolecular material and coats, and makes this second macromolecular material at the whole outer surface formation of this bundle stainless steel fibre coating layer (part master batch product can omit this step).
4) will restraint the approximate circle cylinder that stainless steel fibre cuts into certain-length by pelleter.
It should be noted last that: embodiment one, two, three, four, five only is several preferred embodiment of the present invention, can make those skilled in the art more fully understand the present invention, but not limit the present invention in any way.Those skilled in the art should be appreciated that and can make amendment or be equal to replacement the present invention, and do not break away from the spirit and scope of the present invention, and it all should be encompassed in the middle of the claim scope of the present invention.
Claims (6)
1. a preparation method who contains the conductive plastic base particle of stainless steel fibre is characterized in that, comprises following preparation process: 1) a branch of continuous stainless steel fibre is immersed the modification that is coupled in the surface modification agent solution and handle, make it have the lipophile modified surface; Guarantee that whole bundle stainless steel fibre is fluffy, under the prerequisite of abundant infiltration, the stretching stainless fiber beam of trying one's best; Oven dry;
2) will be through 1) the stainless steel fibre importing handled of step contains in first macromolecular material and coats, and makes this first macromolecular material each root fiber surface formation coating layer in this bundle stainless steel fibre;
3) this bundle stainless steel fibre that will form coating layer by pelleter cuts into the approximate circle cylinder;
Described surface modification agent solution is selected from: a kind of in aqueous solution of ester, the dimethyl acetic acid amine aqueous solution in ethanolic solution, phosphoric acid half ester ethoxylated alcohol two sodium water solutions, the 3-aminopropyl triethoxysilane aqueous solution, Di(dioctylpyrophosphato) ethylene titanate b propanol solution, the dodecyl dimethyl amine second of sulfo-succinic acid tricosyl sodium salt ethanolic solution, sulfo-succinic acid dioctyl sodium salt ethanolic solution, alkylamine guanidine polyoxy.
2. a kind of preparation method who contains the conductive plastic base particle of stainless steel fibre according to claim 1, it is characterized in that, the stainless steel fibre that will be coated first macromolecular material imports in second macromolecular material and coats, and makes this second macromolecular material form coating layer at the whole outer surface of this bundle stainless steel fibre.
3. a kind of preparation method who contains the conductive plastic base particle of stainless steel fibre according to claim 1 and 2 is characterized in that, described sulfo-succinic acid tricosyl sodium salt ethanolic solution, and mass percent is a concentration 1%～20%; Sulfo-succinic acid dioctyl sodium salt ethanolic solution, mass percent concentration 2%～20%; Alkylamine guanidine polyoxy is for ethanolic solution, mass percent concentration 1%～5%; Phosphoric acid half ester ethoxylated alcohol two sodium water solutions, mass percent concentration 1%～5%; The 3-aminopropyl triethoxysilane aqueous solution, mass percent concentration 2%～10%; Di(dioctylpyrophosphato) ethylene titanate b propanol solution, mass percent concentration 2%～10%; Aqueous solution of ester in the dodecyl dimethyl amine second, mass percent concentration 2%～10%; The dimethyl acetic acid amine aqueous solution, mass percent concentration 1%～10%;
4. a kind of preparation method who contains the conductive plastic base particle of stainless steel fibre according to claim 1 and 2 is characterized in that the substrate macromolecule material of described first macromolecular material and plastic device mixes, and molecular weight is between 500～20000.
5. a kind of preparation method who contains the conductive plastic base particle of stainless steel fibre according to claim 1 and 2, it is characterized in that described first macromolecular material is polyoxyethylene polyoxypropylene block type polyethers, polyol ester, polyester or solvent epoxy varnish.
6. a kind of according to claim 1 or 5 preparation method who contains the conductive plastic base particle of stainless steel fibre, it is characterized in that, the first macromolecular material wiring solution-forming is coated the stainless steel fibre of handling, described first macromolecule material solution is a polyoxyethylene polyoxypropylene block type polyethers ethanolic solution, the molecular weight of polyoxyethylene polyoxypropylene block type polyethers between 1500～5000, mass percent concentration 4%～50%; Or Glycolabe
R180 cyclohexanone solution or Glycolabe
RThe cyclohexanone solution of vl, mass percent concentration 3%～50%; Or the methoxyl group butyl acetate solution of propoxyl group bisphenol-A fumaric resin, mass percent concentration 2%～40%; Solvent epoxy varnish, mass percent concentration 3%～40%.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102617986A (en) * | 2012-04-05 | 2012-08-01 | 天津大学 | Method for preparing stainless steel fiber resin matrix composite conductive plastics |
| CN110283420A (en) * | 2019-07-31 | 2019-09-27 | 黄山华塑新材料科技有限公司 | A kind of counter-bending, antiskid, Antistatic type Wood plastic composite and preparation method thereof |
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| CA1218231A (en) * | 1982-07-22 | 1987-02-24 | Dart Industries Inc. | Fiber-reinforced composite materials |
| US4664971A (en) * | 1981-12-30 | 1987-05-12 | N.V. Bekaert S.A. | Plastic article containing electrically conductive fibers |
| CN1415649A (en) * | 2001-10-29 | 2003-05-07 | 金鼎联合科技纤维股份有限公司 | Granular composite material containing metal fiber and its mfg. method |
| CN100338130C (en) * | 2005-08-03 | 2007-09-19 | 北京纳盛通新材料科技有限公司 | Conductive plastic and its processing method and apparatus |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US4664971A (en) * | 1981-12-30 | 1987-05-12 | N.V. Bekaert S.A. | Plastic article containing electrically conductive fibers |
| CA1218231A (en) * | 1982-07-22 | 1987-02-24 | Dart Industries Inc. | Fiber-reinforced composite materials |
| CN1415649A (en) * | 2001-10-29 | 2003-05-07 | 金鼎联合科技纤维股份有限公司 | Granular composite material containing metal fiber and its mfg. method |
| CN100338130C (en) * | 2005-08-03 | 2007-09-19 | 北京纳盛通新材料科技有限公司 | Conductive plastic and its processing method and apparatus |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102617986A (en) * | 2012-04-05 | 2012-08-01 | 天津大学 | Method for preparing stainless steel fiber resin matrix composite conductive plastics |
| CN110283420A (en) * | 2019-07-31 | 2019-09-27 | 黄山华塑新材料科技有限公司 | A kind of counter-bending, antiskid, Antistatic type Wood plastic composite and preparation method thereof |
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| CN101840745B (en) | 2012-02-29 |
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