CN103306390A - 3D sound absorption member and preparation method thereof - Google Patents
3D sound absorption member and preparation method thereof Download PDFInfo
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- CN103306390A CN103306390A CN2013102426112A CN201310242611A CN103306390A CN 103306390 A CN103306390 A CN 103306390A CN 2013102426112 A CN2013102426112 A CN 2013102426112A CN 201310242611 A CN201310242611 A CN 201310242611A CN 103306390 A CN103306390 A CN 103306390A
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- polyester staple
- staple fiber
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- absorbent
- sound absorption
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Abstract
The invention discloses a 3D sound absorption member and a preparation method thereof. The 3D sound absorption member comprises a first polyester staple fiber layer, wherein pricked holes are uniformly formed in the surface of the first polyester staple fiber layer; the diameter of each pricked hole is not lager than 2 mm; the pricking depth is larger than two thirds of the thickness of the first polyester staple fiber layer; and the pricking density is 1.0-1.5 needles/cm<2>. According to the 3D sound absorption member and the preparation method thereof, the polyester staple fibers are taken as raw materials; when the first polyester staple fiber layer is melted, the fibers are boned together, so that the 3D sound absorption member material is environment-friendly, doesn't release hazardous substances, and can be recycled; the 3D sound absorption member is attached onto a wall and can form a cavity with the wall body, keels are omitted, the vibration transmission of sound is reduced, and sound absorption and noise lowering effects can be well realized; and the material of the 3D sound absorption member is environment-friendly and easy to recycle, the prepared 3D sound absorption member has a good sound absorption effect, and particularly for low-frequency sound, the sound absorption effect is improved remarkably.
Description
Technical field
The present invention relates to a kind of 3D acoustic(al)absorbent and preparation method thereof, belong to building materials component and construction field.
Background technology
Common sound absorption system generally is take traditional damping material fibrous material, flex foam as sandwich layer, take metal material or nonmetals as skeleton or surface layer form, be widely used in the fields such as architectural decoration and venue construction.
That existing acoustic(al)absorbent is installed is cumbersome, complicated operation, sound-absorbing effect are poor, it is not attractive in appearance to decorate yet.The use of keel has strengthened the workload of construction, and the effect of sound absorption also can play impact in various degree, and manufacturing process is complicated, needs the multiple working procedure just to finish.
Summary of the invention
The purpose of this invention is to provide a kind of 3D acoustic(al)absorbent and preparation method thereof.
For solving the problems of the technologies described above, technical scheme of the present invention is:
A kind of 3D acoustic(al)absorbent, comprise the first polyester staple fiber layer, the first polyester staple fiber layer surface uniform is distributed with pinprick, and the aperture of pinprick is not more than 2mm, the degree of depth of acupuncture is greater than 2/3rds of the first polyester staple fiber layer thickness, and needling density is 1.0～1.5 pins/cm
2
The applicant finds after deliberation, and the acoustic(al)absorbent of said structure is compared with acoustic(al)absorbent of the prior art, and sound-absorbing effect has had great lifting.
In order to improve sound-absorbing effect, the first polyester staple fiber layer comprises: mixed uniformly the first polyester staple fibers peacekeeping the second polyester staple fiber, or mixed uniformly the first polyester staple fibers peacekeeping Fypro.
Above-mentioned the first polyester staple fiber refers to that fusing point is 160 ℃～200 ℃ polyester staple fiber; The second polyester staple fiber refers to that fusing point is 250 ℃～260 ℃ polyester staple fiber.
The mass ratio of the second polyester staple fiber or Fypro and the first polyester staple fiber is (1:1)～(1:2.3).
In order to guarantee sound-absorbing effect, the thickness of the first polyester staple fiber layer is 3mm～10mm.
Install for convenient, the 3D acoustic(al)absorbent is uncovered rectangular structure.
Use for convenient, the length of 3D acoustic(al)absorbent and the wide 600mm～1000mm that is highly are 40mm～90mm.
The preparation method of above-mentioned 3D acoustic(al)absorbent comprises the following steps that order is joined:
(a) with the first polyester staple fibers peacekeeping fiber A mixing, get composite fibre; Described fiber A is the second polyester staple fiber or Fypro; The fusing point of the first polyester staple fiber is 160 ℃～200 ℃; The fusing point of the second polyester staple fiber is 250 ℃～260 ℃;
(b) with composite fibre shredding, combing, form fleece;
(c) fleece acupuncture, roll-in are got cellucotton; The needling density of described acupuncture is 1.0～1.5 pins/cm
2, the roll-in pressure during roll-in is 0.5～1Mpa, roll-in speed is 1.1～1.3m/min;
(d) with cellucotton heat treatment, heat treatment temperature is 160 ℃～210 ℃, and heat treatment time is 2min～3min;
(e) cellucotton after the heat treatment is entered the moulding press press mold, can make the 3D acoustic(al)absorbent, the pressure of moulding press press mold is 1.47 * 10
5N/m
2～2.94 * 10
5N/m
2, the pressing mold time is 10s～15s.
In the above-mentioned steps (a), the mass ratio of fiber A and the first polyester staple fiber is (1:1)～(1:2.3); In the step (c), the roller spacing is preferably 20～50mm.
The various required patterns such as leaf, stone, flower, personage, landscape, literal can be suppressed in above-mentioned 3D acoustic(al)absorbent surface, to reach better decorative effect.
The application of above-mentioned 3D acoustic(al)absorbent, 3D acoustic(al)absorbent and form cavity structure when mounted between the body of wall.
The technology that the present invention does not specify is prior art.
The present invention adopts polyester staple fiber as raw material, and fiber is bonded together, and therefore, this 3D acoustic(al)absorbent material environment friendly does not discharge hazardous substances, and recyclable; The present invention can form cavity with body of wall after being affixed on the 3D acoustic(al)absorbent on the wall, has saved keel, has reduced the vibration transmission of sound, thereby has better played the effect of sound absorption reduction; This 3D acoustic(al)absorbent material therefor environmental protection, easily recovery, the 3D acoustic(al)absorbent acoustically effective that makes is good, especially the bass acoustically effective is obviously improved; The present invention can play good decorative effect, can change arbitrarily by the shape of replaceable mould the profile of acoustic(al)absorbent, obtains the figure that oneself needs; This 3D acoustic(al)absorbent is light, is easy to install.
Description of drawings
Fig. 1 is the sectional drawing of 3D acoustic(al)absorbent;
Among the figure, 1 is the first polyester staple fiber layer, and 2 is pinprick, and 3 is the second polyester staple fiber, and 4 is Fypro.
The specific embodiment
In order to understand better the present invention, further illustrate content of the present invention below in conjunction with embodiment, but content of the present invention not only is confined to the following examples.
3D acoustic(al)absorbent as shown in Figure 1 comprises the first polyester staple fiber layer, is evenly distributed with the first polyester staple fiber, the second polyester staple fiber in the first polyester staple fiber layer, and the fusing point of the first polyester staple fiber is 180 ℃; The fusing point of the second polyester staple fiber is 255 ℃.The thickness of the first polyester staple fiber layer is 4mm; The 3D acoustic(al)absorbent is uncovered rectangular structure, the long and wide 700mm that is, and height is 40mm.
The mass ratio of the second polyester staple fiber and the first polyester staple fiber is 1:1.
The first polyester staple fiber layer surface uniform is distributed with pinprick, and the aperture of pinprick is 1.8mm, and the degree of depth of acupuncture is 3/4ths of the first polyester staple fiber layer thickness, and needling density is 1.0 pins/cm
2
The preparation method of above-mentioned 3D acoustic(al)absorbent comprises the steps:
(a) the first polyester staple fibers peacekeeping the second polyester staple fiber is added in the raw material feeding unit, fiber mixes through feeding unit, and the mass ratio of the second polyester staple fiber and the first polyester staple fiber is 1:1;
(b) mixed fiber is at first carried out pre-shredding, agglomerated fiber together becomes loose; Carry out smart shredding after pre-shredding is finished, fiber is mixed uniformly; The compressed device of fiber after shredding is thrown carding equipment into, and fiber forms continuous fleece behind carding equipment;
(c) fleece is obtained the cellucotton body after by acupuncture, roll-in; The needling density of described acupuncture is 1.0 pins/cm
2Roll-in pressure during roll-in is 0.8Mpa, and roll-in speed is 1.26m/min, and the roller spacing is 25mm;
(d) the cellucotton body that step (c) is obtained enters baking oven, carries out thermal finalization and processes; Heat setting temperature is 190 ℃, and heat-setting time is 2min;
(e) cellucotton after the thermal finalization that step (d) obtained is processed, carrying out mold pressing, to process the pressure of described moulding press be 1.74 * 10
5N/m
2, the pressing mold time is 10s.
The acoustic(al)absorbent that step (e) obtains namely can be used as finished product and dispatches from the factory behind side cut, test package.
The 3D acoustic(al)absorbent comprises the first polyester staple fiber layer, is evenly distributed with the first polyester staple fiber, the second polyester staple fiber in the first polyester staple fiber layer, and the fusing point of the first polyester staple fiber is 160 ℃; The fusing point of the second polyester staple fiber is 258 ℃.The thickness of the first polyester staple fiber layer is 8mm; The 3D acoustic(al)absorbent is uncovered rectangular structure, the long and wide 800mm that is, and height is 80mm.
The second polyester staple fiber and the first polyester staple fiber mass ratio are 1:1.5.
The first polyester staple fiber layer surface uniform is distributed with pinprick, and the aperture of pinprick is 1.5mm, and the degree of depth of acupuncture is 4/5ths of the first polyester staple fiber layer thickness, and needling density is 1.2 pins/cm
2
The preparation method of above-mentioned 3D acoustic(al)absorbent comprises the steps:
(a) the first polyester staple fibers peacekeeping the second polyester staple fiber is added in the raw material feeding unit, fiber mixes through feeding unit, and the second polyester staple fiber and the first polyester staple fiber mass ratio are 1:1.5;
(b) mixed fiber is at first carried out pre-shredding, agglomerated fiber together becomes loose; Carry out smart shredding after pre-shredding is finished, fiber is mixed uniformly; The compressed device of fiber after shredding is thrown carding equipment into, and fiber forms continuous fleece behind carding equipment;
(c) fleece is obtained the cellucotton body after by acupuncture, roll-in; The needling density of described acupuncture is 1.2 pins/cm
2Roll-in pressure during roll-in is 0.6Mpa, and roll-in speed is 1.18m/min, and the roller spacing is 20mm;
(d) the cellucotton body that step (c) is obtained enters baking oven, carries out thermal finalization and processes; Heat setting temperature is 185 ℃, and heat-setting time is 2.5min;
(e) cellucotton after the thermal finalization that step (d) is obtained is processed carries out mold pressing and processes; The pressure of described moulding press is 2.14 * 10
5N/m
2, the pressing mold time is 12s;
The acoustic(al)absorbent that step (e) obtains namely can be used as finished product and dispatches from the factory behind side cut, test package.
The 3D acoustic(al)absorbent comprises the first polyester staple fiber layer, is evenly distributed with the first polyester staple fiber, the second polyester staple fiber in the first polyester staple fiber layer, and the fusing point of the first polyester staple fiber is 180 ℃; The fusing point of the second polyester staple fiber is 260 ℃.The thickness of the first polyester staple fiber layer is 8mm; The 3D acoustic(al)absorbent is uncovered rectangular structure, the long and wide 900mm that is, and height is 80mm.
The mass ratio of the second polyester staple fiber and the first polyester staple fiber is 1:2.3.
The first polyester staple fiber layer surface uniform is distributed with pinprick, and the aperture of pinprick is 1.5mm, and the degree of depth of acupuncture is 4/5ths of the first polyester staple fiber layer thickness, and needling density is 1.1 pins/cm
2
The preparation method of above-mentioned 3D acoustic(al)absorbent comprises the steps:
(a) the first polyester staple fibers peacekeeping the second polyester staple fiber is added in the raw material feeding unit, fiber mixes through feeding unit, and the mass ratio of the second polyester staple fiber and the first polyester staple fiber is 1:2.3;
(b) mixed fiber is at first carried out pre-shredding, agglomerated fiber together becomes loose; Carry out smart shredding after pre-shredding is finished, fiber is mixed uniformly; The compressed device of fiber after shredding is thrown carding equipment into, and fiber forms continuous fleece behind carding equipment;
(c) fleece is obtained the cellucotton body after by acupuncture, roll-in; The needling density of described acupuncture is 1.1 pins/cm
2Roll-in pressure during roll-in is 0.6Mpa, and roll-in speed is 1.20m/min, and the roller spacing is 30mm;
(d) the cellucotton body that step (c) is obtained enters baking oven, carries out thermal finalization and processes; Heat setting temperature is 200 ℃, and heat-setting time is 2.5min;
(e) cellucotton after the thermal finalization that step (d) is obtained is processed carries out mold pressing and processes; The pressure of described moulding press is 2.48 * 10
5N/m
2, the pressing mold time is 13s;
The acoustic(al)absorbent that step (e) obtains namely can be used as finished product and dispatches from the factory behind side cut, test package.
Embodiment 4
The 3D acoustic(al)absorbent comprises the first polyester staple fiber layer, is evenly distributed with the first polyester staple fiber, Fypro in the first polyester staple fiber layer, and the fusing point of the first polyester staple fiber is 190 ℃; The thickness of the first polyester staple fiber layer is 8mm; The 3D acoustic(al)absorbent is uncovered rectangular structure, the long and wide 800mm that is, and height is 90mm.
The mass ratio of Fypro and the first polyester staple fiber layer is 1:1.5.
The first polyester staple fiber layer surface uniform is distributed with pinprick, and the aperture of pinprick is 1.5mm, and the degree of depth of acupuncture is 4/5ths of the first polyester staple fiber layer thickness, and needling density is 1.5 pins/cm
2
The preparation method of upper 3D acoustic(al)absorbent comprises the steps:
(a) the first polyester staple fibers peacekeeping the second polyester staple fiber is added in the raw material feeding unit, fiber mixes through feeding unit, and the mass ratio of Fypro and the first polyester staple fiber layer is 1:1.5;
(b) mixed fiber is at first carried out pre-shredding, agglomerated fiber together becomes loose; Carry out smart shredding after pre-shredding is finished, fiber is mixed uniformly; The compressed device of fiber after shredding is thrown carding equipment into, and fiber forms continuous fleece behind carding equipment;
(c) fleece is obtained the cellucotton body after by acupuncture, roll-in;
The needling density of described acupuncture is 1.5 pins/cm
2Roll-in pressure during roll-in is 0.9Mpa, and roll-in speed is 1.25m/min, and the roller spacing is 50mm;
(d) the cellucotton body that step (c) is obtained enters baking oven, carries out thermal finalization and processes; Heat setting temperature is 200 ℃, and heat-setting time is 3min;
(e) cellucotton after the thermal finalization that step (d) is obtained is processed carries out mold pressing and processes; The pressure of described moulding press is 2.94 * 10
5N/m
2, the pressing mold time is 15s.
The acoustic(al)absorbent that step (e) obtains namely can be used as finished product and dispatches from the factory behind side cut, test package.
Below the sound absorbing capabilities of 3D acoustic(al)absorbent that the present invention is obtained detect, table 1 is the sound absorption coefficient of each product; The detection method employing standard of sound absorption coefficient is GB/T20247-2006 " acoustic absorptivity measurements of acoustic reverberation chamber ", checkout equipment: BK4418 type building acoustics analyzer; 22 ℃ of environment temperatures, humidity 73%.
Table 1 is the sound absorption coefficient of each product
Claims (9)
1. 3D acoustic(al)absorbent, it is characterized in that: comprise the first polyester staple fiber layer, the first polyester staple fiber layer surface uniform is distributed with pinprick, and the aperture of pinprick is not more than 2mm, the degree of depth of acupuncture is greater than 2/3rds of the first polyester staple fiber layer thickness, and needling density is 1.0～1.5 pins/cm
2
2. 3D acoustic(al)absorbent as claimed in claim 1, it is characterized in that: the first polyester staple fiber layer comprises: mixed uniformly the first polyester staple fibers peacekeeping the second polyester staple fiber, or mixed uniformly the first polyester staple fibers peacekeeping Fypro.
3. 3D acoustic(al)absorbent as claimed in claim 2 is characterized in that: the mass ratio of the second polyester staple fiber or Fypro and the first polyester staple fiber is (1:1)～(1:2.3).
4. such as the described 3D acoustic(al)absorbent of claim 1～3 any one, it is characterized in that: the thickness of the first polyester staple fiber layer is 3mm～10mm.
5. such as the described 3D acoustic(al)absorbent of claim 1～3 any one, it is characterized in that: the 3D acoustic(al)absorbent is uncovered rectangular structure.
6. 3D acoustic(al)absorbent as claimed in claim 5, it is characterized in that: the length of 3D acoustic(al)absorbent and the wide 600mm of being～1000mm highly are 40mm～90mm.
7. the preparation method of the described 3D acoustic(al)absorbent of claim 1-6 any one is characterized in that: comprise the following steps that order is joined:
(a) with the first polyester staple fibers peacekeeping fiber A mixing, get composite fibre; Described fiber A is the second polyester staple fiber or Fypro; The fusing point of the first polyester staple fiber is 160 ℃～200 ℃; The fusing point of the second polyester staple fiber is 250 ℃～260 ℃;
(b) with composite fibre shredding, combing, form fleece;
(c) fleece acupuncture, roll-in are got cellucotton; The needling density of described acupuncture is 1.0～1.5 pins/cm
2, the roll-in pressure during roll-in is 0.5～1Mpa, roll-in speed is 1.1～1.3m/min;
(d) with cellucotton heat treatment, heat treatment temperature is 160 ℃～210 ℃, and heat treatment time is 2min～3min;
(e) cellucotton after the heat treatment is entered the moulding press press mold, can make the 3D acoustic(al)absorbent, the pressure of moulding press press mold is 1.47 * 10
5N/m
2～2.94 * 10
5N/m
2, the pressing mold time is 10s～15s.
8. method as claimed in claim 7, it is characterized in that: in the step (a), the mass ratio of fiber A and the first polyester staple fiber is (1:1)～(1:2.3); In the step (c), the roller spacing is 20～50mm.
9. the application of the described 3D acoustic(al)absorbent of claim 1～6 any one is characterized in that: the 3D acoustic(al)absorbent and forms cavity structure when mounted between the body of wall.
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|---|---|---|---|
| CN201310242611.2A CN103306390B (en) | 2013-06-19 | 2013-06-19 | A kind of 3D acoustic(al)absorbent and preparation method thereof |
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| CN103306390B CN103306390B (en) | 2015-10-28 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111648036A (en) * | 2020-06-05 | 2020-09-11 | 河北传媒学院 | Polyester fiber sound-absorbing body capable of absorbing harmful substances and preparation method thereof |
| CN113954399A (en) * | 2021-09-29 | 2022-01-21 | 江苏佰家丽新材料科技有限公司 | Manufacturing method of sound-absorbing board with negative oxygen ion release function and sound-absorbing board |
| CN114234435A (en) * | 2021-12-14 | 2022-03-25 | 珠海格力新材料有限公司 | Improvement method, system and device for improving performance of soundproof cotton and soundproof cotton |
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|---|---|---|---|---|
| US4851283A (en) * | 1988-12-05 | 1989-07-25 | Monsanto Company | Headliners having improved sound-absorbing characteristics |
| CN1851187A (en) * | 2006-04-29 | 2006-10-25 | 崔南华 | Thermosetting acoustical cotton, and its production method |
| CN101736521A (en) * | 2009-12-22 | 2010-06-16 | 东华大学 | Method for preparing Chinese medicament dreg needling non-woven composite material |
| CN203347040U (en) * | 2013-06-19 | 2013-12-18 | 苏州佰家丽新材料科技有限公司 | 3D sound-absorbing body |
-
2013
- 2013-06-19 CN CN201310242611.2A patent/CN103306390B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4851283A (en) * | 1988-12-05 | 1989-07-25 | Monsanto Company | Headliners having improved sound-absorbing characteristics |
| CN1851187A (en) * | 2006-04-29 | 2006-10-25 | 崔南华 | Thermosetting acoustical cotton, and its production method |
| CN101736521A (en) * | 2009-12-22 | 2010-06-16 | 东华大学 | Method for preparing Chinese medicament dreg needling non-woven composite material |
| CN203347040U (en) * | 2013-06-19 | 2013-12-18 | 苏州佰家丽新材料科技有限公司 | 3D sound-absorbing body |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111648036A (en) * | 2020-06-05 | 2020-09-11 | 河北传媒学院 | Polyester fiber sound-absorbing body capable of absorbing harmful substances and preparation method thereof |
| CN113954399A (en) * | 2021-09-29 | 2022-01-21 | 江苏佰家丽新材料科技有限公司 | Manufacturing method of sound-absorbing board with negative oxygen ion release function and sound-absorbing board |
| CN114234435A (en) * | 2021-12-14 | 2022-03-25 | 珠海格力新材料有限公司 | Improvement method, system and device for improving performance of soundproof cotton and soundproof cotton |
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