CN101062998B - Water-resistant soy protein plastic and preparation method thereof - Google Patents
Water-resistant soy protein plastic and preparation method thereof Download PDFInfo
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- CN101062998B CN101062998B CN200610013519A CN200610013519A CN101062998B CN 101062998 B CN101062998 B CN 101062998B CN 200610013519 A CN200610013519 A CN 200610013519A CN 200610013519 A CN200610013519 A CN 200610013519A CN 101062998 B CN101062998 B CN 101062998B
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- glycerine
- water
- protein
- soybean protein
- glacial acetic
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Abstract
The invention discloses a waterproof soybean protein plastic and preparing method, which comprises the following steps: allocating 8-10 wt soybean protein, 3-5 wt complexing elasticizer; adding the complexing elasticizer into the soybean protein raw material; forming mixture; putting into modular equipment; getting completed product; cooling to 30-35 deg. c; storing; getting the product. This invention is safe and non-pollution, which can be used to one time dinner set, foodstuff packing material and industrial composite material domain.
Description
Technical field
The invention belongs to the organic chemical industry field, especially a kind of water-resistant soy protein plastic and preparation method thereof.
Background technology
Along with the growing tension and the people of petroleum resources seriously pay close attention to the green environment problem, plastics are very limited as difficult degradation, the product that hinders environmental protection, and the equivalent material of seeking plastics becomes current popular research topic.At present the equivalent material of plastics mostly is the degradable starch plastics greatly, but these kind of starch plastics compare with conventional plastics, and its mechanical property such as intensity, ductility are poor, so that Application Areas is subjected to very big restriction.People invest the natural and reproducible raw material in source with the sight of research for this reason, as the protein of various economic crop plants fruits, because this class raw material is renewable and cost is low, and can biological degradation, therefore can be used as biodegradable material fully and use.Newest research results shows, adopts protein material such as soy-protein as matrix degradation, and formed degradable plastics can improve its intensity and ductility.But adopt the very variation of interaction of soy-protein and water at present, want and multi-usage to use as finished-product material, and need be in certain period, in the usage period, have certain mechanical stability at least, also can keep relative stable to water simultaneously.Glycerine is strong as the made degradative plastics water-absorbent of the soy-protein of softening agent, water tolerance is relatively poor and adopt at present, and mechanical property is not good, and range of application is less.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, provide a kind of and have good mechanical performance and stronger water-proof water-resistant soy protein plastic and adopt composite elasticizer to prepare the method for this water-resistant soy protein plastic.
Realize that technical scheme of the present invention is:
This water-resistant soy protein plastic is characterized in that:
The parts by weight of its component and each component are:
Soy-protein: 8-10 part
Composite elasticizer: 3-5 part.
And described soy-protein is soyflour or soybean protein concentrate or soybean protein isolate.
And described composite elasticizer comprises the mixed solution of the mixed solution of the mixed solution of mixed solution, glycerine and Glacial acetic acid of glycerine and propionic acid and glycerine and propionic acid and Glacial acetic acid, and its part by weight is respectively:
Glycerine: propionic acid=1-8: 1;
Glycerine: Glacial acetic acid=1-8: 1;
Glycerine: the mixed solution=1-8 of propionic acid and Glacial acetic acid: 1.
The preparation method of this water-resistant soy protein plastic is:
(1). in the soybean protein raw material, add composite elasticizer according to proportioning, fully stir into even moist powdered mixture;
(2). this mixture is put into molding device and under the 85-140 ℃ of temperature condition and under the 10-16Mpa forming pressure, moulding 8-17 minute, is promptly got the raw material finished product.
And the molding device of mixture comprises vulcanizing press or screw extrusion press or rolling press.
Embodiment
Below embodiments of the invention are further described, but be not limited to present embodiment:
The soy-protein that present embodiment relates to comprises soyflour, soybean protein concentrate and soybean protein isolate.Soyflour is for containing full fat soybean powder or the defatted soyflour product that protein is 40-50%; Soybean protein concentrate is to remove the product that its protein content behind soybean oil and the water-soluble non-protein part is no less than 70% (butt) from high-quality, clean, complete sum decortication soybean; Soybean protein isolate is the product that contains 90% (butt).Because these three kinds of soy proteinaceous functions and dosage are basic identical, only be that example is narrated in an embodiment therefore with the soybean protein isolate.
Embodiment one
(1). in 100Kg soybean protein isolate raw material, add the composite elasticizer that is constituted by 30Kg glycerine and 20Kg propionic acid, fully stir into even moist powdered mixture;
(2). this mixture is put into the mould of vulcanizing press, heating mould to 125 ℃, forming pressure is 15Mpa, moulding 10 minutes promptly gets the raw material finished product.
Embodiment two
(1). in 100Kg soybean protein isolate raw material, add the composite elasticizer that is constituted by 40Kg glycerine and 10Kg Glacial acetic acid, fully stir into even moist powdered mixture;
(2). this mixture is put into the mould of three rollers (or four rollers) rolling press, heating mould to 90 ℃, forming pressure is 12Mpa, moulding 14 minutes is with the raw material finished product calendering of gained (or film) in flakes.
Embodiment three
(1). in 100Kg soybean protein isolate raw material, add the composite elasticizer that is constituted by 60Kg glycerine and 10Kg propionic acid, 5Kg Glacial acetic acid, fully stir into even moist powdered mixture;
(2). this mixture is put into Φ 30 single screw extrusion machine extrusion sheets, and extrusion condition is: four sections temperature are respectively: 85 ℃, 115 ℃, 130 ℃, 130 ℃, rotating speed is 30rpm.
The soybean protein isolate of above-mentioned processing step, glycerine, propionic acid, Glacial acetic acid are the commercially available prod.
The plastics of making by the resulting finished product raw material of above-mentioned preparation method are safety, nontoxic, can be applicable to disposable tableware, packaging material for food, industrial prepare composite; And preparation technology is comparatively simple, high in technological content, and raw material resources are abundant, and with low cost, degradation property is better, helps environment protection.The present invention obtains the water-fast plastics of different mechanical properties by the ratio of regulating glycerine in the composite elasticizer, and especially is greatly increased comparing all with existing similar degradative plastics aspect the water-absorbent at tensile strength, elongation at break.
Below by table one confirm the present invention and existing independent employing glycerine as the plastics of softening agent in the very big advantage aspect the water-absorbent.
Table one water-resistant soy protein mechanical property and water-absorbent
| Softening agent | Tensile strength (Mpa) | Elongation at break (%) | Water-absorbent (%) |
| Only adopt glycerine | 9±2 | 130±5 | 150±10 |
| Glycerine+propionic acid | 11±2 | 120±5 | 10±3 |
| Softening agent | Tensile strength (Mpa) | Elongation at break (%) | Water-absorbent (%) |
| Glycerine+Glacial acetic acid | 10±2 | 130±5 | 9±3 |
| Glycerine+propionic acid+Glacial acetic acid | 11±2 | 130±5 | 9±3 |
The test of above data is by as follows:
Mechanical property records at the electronic universal tester that the Rui Geer of Shenzhen Instr Ltd. produces with reference to GB/T1040-92, and draw speed is 50mm/min; The water absorbing properties test is with reference to GB1034-86, and the quality of the back sample that soaks deducts the ratio of quality with the quality of the preceding sample of immersion of the preceding sample of immersion.
Claims (2)
1. water-resistant soy protein plastic is characterized in that:
Its component and parts by weight are:
Soy-protein: 8-10 part, this soy-protein are soyflour or soybean protein concentrate or soybean protein isolate;
Composite elasticizer: 3-5 part, this composite elasticizer are mixed solution or the mixed solution of glycerine and Glacial acetic acid or the mixed solution of glycerine and propionic acid and Glacial acetic acid of glycerine and propionic acid, and its part by weight is:
Glycerine: propionic acid=1-8: 1;
Glycerine: Glacial acetic acid=1-8: 1;
Glycerine: the mixed solution=1-8 of propionic acid and Glacial acetic acid: 1.
2. the preparation method of a water-resistant soy protein plastic as claimed in claim 1, it is characterized in that: the preparation method is:
(1). in the soybean protein raw material, add composite elasticizer according to proportioning, fully stir into even moist powdered mixture;
(2). this mixture is put into vulcanizing press or screw extrusion press or rolling press and under the 85-140 ℃ of temperature condition and under the 10-16Mpa forming pressure, moulding 8-17 minute, is promptly got the raw material finished product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610013519A CN101062998B (en) | 2006-04-24 | 2006-04-24 | Water-resistant soy protein plastic and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610013519A CN101062998B (en) | 2006-04-24 | 2006-04-24 | Water-resistant soy protein plastic and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101062998A CN101062998A (en) | 2007-10-31 |
| CN101062998B true CN101062998B (en) | 2010-05-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200610013519A Expired - Fee Related CN101062998B (en) | 2006-04-24 | 2006-04-24 | Water-resistant soy protein plastic and preparation method thereof |
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| Country | Link |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5523293A (en) * | 1994-05-25 | 1996-06-04 | Iowa State University Research Foundation, Inc. | Soy protein-based thermoplastic composition for preparing molded articles |
| CN1362451A (en) * | 2002-02-01 | 2002-08-07 | 武汉大学 | Modified soybean protein plastic and its prepn. and use |
| CN1417261A (en) * | 2002-12-18 | 2003-05-14 | 中国农业大学 | Prepn of biodegradable material |
| JP2003261771A (en) * | 2002-03-07 | 2003-09-19 | Dainippon Ink & Chem Inc | Biodegradable resin composition, method of production for the same and biodegradable molded article |
| JP2003286407A (en) * | 2002-03-28 | 2003-10-10 | Dainippon Ink & Chem Inc | Soybean protein resin composition and soybean protein molding using the same |
-
2006
- 2006-04-24 CN CN200610013519A patent/CN101062998B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5523293A (en) * | 1994-05-25 | 1996-06-04 | Iowa State University Research Foundation, Inc. | Soy protein-based thermoplastic composition for preparing molded articles |
| CN1362451A (en) * | 2002-02-01 | 2002-08-07 | 武汉大学 | Modified soybean protein plastic and its prepn. and use |
| JP2003261771A (en) * | 2002-03-07 | 2003-09-19 | Dainippon Ink & Chem Inc | Biodegradable resin composition, method of production for the same and biodegradable molded article |
| JP2003286407A (en) * | 2002-03-28 | 2003-10-10 | Dainippon Ink & Chem Inc | Soybean protein resin composition and soybean protein molding using the same |
| CN1417261A (en) * | 2002-12-18 | 2003-05-14 | 中国农业大学 | Prepn of biodegradable material |
Non-Patent Citations (4)
| Title |
|---|
| J. Zhang.Mechanical and thermal properties of extruded soy proteinsheets.polymer42 6.2001,42(6),2569-2578. |
| J. Zhang.Mechanical and thermal properties of extruded soy proteinsheets.polymer42 6.2001,42(6),2569-2578. * |
| 姚永志等.有机酸对大豆分离蛋白可降解材料增塑作用的研究.食品科技 4.2004,(4),26-28. |
| 姚永志等.有机酸对大豆分离蛋白可降解材料增塑作用的研究.食品科技 4.2004,(4),26-28. * |
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|---|---|
| CN101062998A (en) | 2007-10-31 |
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Granted publication date: 20100512 Termination date: 20110424 |