CN101471070B - High-performance acoustical material and method for producing the same - Google Patents
High-performance acoustical material and method for producing the same Download PDFInfo
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- CN101471070B CN101471070B CN2007100305048A CN200710030504A CN101471070B CN 101471070 B CN101471070 B CN 101471070B CN 2007100305048 A CN2007100305048 A CN 2007100305048A CN 200710030504 A CN200710030504 A CN 200710030504A CN 101471070 B CN101471070 B CN 101471070B
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- 239000000463 material Substances 0.000 title claims abstract description 42
- 238000004519 manufacturing process Methods 0.000 title abstract description 5
- 239000000835 fiber Substances 0.000 claims abstract description 123
- 229920000728 polyester Polymers 0.000 claims abstract description 57
- 239000004744 fabric Substances 0.000 claims abstract description 36
- 239000004743 Polypropylene Substances 0.000 claims abstract description 34
- -1 polypropylene Polymers 0.000 claims abstract description 34
- 229920001155 polypropylene Polymers 0.000 claims abstract description 26
- 239000012943 hotmelt Substances 0.000 claims abstract description 24
- 239000007787 solid Substances 0.000 claims abstract description 9
- 238000005096 rolling process Methods 0.000 claims abstract description 6
- 238000009960 carding Methods 0.000 claims abstract description 4
- 229920004933 Terylene® Polymers 0.000 claims description 15
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 15
- 229920000742 Cotton Polymers 0.000 claims description 11
- 238000002360 preparation method Methods 0.000 claims description 11
- 238000003825 pressing Methods 0.000 claims description 7
- 238000009987 spinning Methods 0.000 claims description 7
- 230000000694 effects Effects 0.000 abstract description 11
- 238000000034 method Methods 0.000 abstract description 7
- 239000002994 raw material Substances 0.000 abstract description 7
- 238000003860 storage Methods 0.000 abstract description 3
- 239000011358 absorbing material Substances 0.000 abstract 3
- 238000010438 heat treatment Methods 0.000 abstract 1
- 239000000203 mixture Substances 0.000 description 16
- 238000010521 absorption reaction Methods 0.000 description 6
- 238000013461 design Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000001467 acupuncture Methods 0.000 description 2
- 239000002872 contrast media Substances 0.000 description 2
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- 238000012360 testing method Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- 229920001410 Microfiber Polymers 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
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- 238000007599 discharging Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
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- 230000007613 environmental effect Effects 0.000 description 1
- 238000007380 fibre production Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
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- 239000013585 weight reducing agent Substances 0.000 description 1
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- Nonwoven Fabrics (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
The invention discloses a material with high-performance of absorbing sound, and a method for preparing the materials, which belongs to the technical field of the sound-absorbing materials, wherein the sound-absorbing material of per 10mm thickness comprises 3-8 layers of 10g/m<2> polypropylene melt-blown fabric and a solid netted mixing staple fiber layer which is clamped between the polypropylene melt-blown fabric, the mixing staple fiber layer comprises ID polyester staple fibers by 45-65%, 15D polyester staple fibers by 20-40% and 1.5D hot melt polyester staple fibers by 5-20%, the preparing method comprises the following steps: preparing raw materials, opening the staple fibers, carrying out the mixed carding, the mixing lapping, the heating modeling, the cold compacting forming and the rolling storage, the sound-absorbing materials of the invention have the advantages of wide raw material source, convenient manufacturing, good sound-absorbing effect and lower cost, and can be widely used for the sound-absorbing processing of vehicles.
Description
Technical field
The present invention relates to acoustical material, be meant a kind of high-performance acoustical material especially, the invention still further relates to the preparation method of above-mentioned acoustical material.
Background technology
Traditional automobile-use acoustical material, the most of employing reclaimed the acoustical cotton that the cloth waste fiber adds phenolic resin adhesion, and the Dust Capacity that this series products comes off is big, and unwanted volatile (VOC) discharge capacity is big.Under the more and more tighter prerequisite of environmental requirement, most of cars have been used the acupuncture acoustical cotton that pure polyster fibre is made instead in recent years, but sound-absorbing effect does not have the former good.Product with 10mm thickness is an example, and it is 700g/m that cloth waste reclaims cotton surface density
2, the sound-absorption coefficient during to 5KHz is 0.7; The acupuncture acoustical cotton surface density of pure polyster fibre manufacturing is 550g/m
2, the sound-absorption coefficient during to 5KHz is 0.56.
For this reason, extensive studies has all been carried out in the home and abroad, and new technical solution constantly appears, as Chinese patent application CN200410094205.7 (publication number CN1676316, open day on October 05th, 2005) a kind of " acoustical material that is used for vehicle " disclosed, by high superficial density layer is used in combination with low superficial density layer, and high superficial density layer is placed on the position that need improve the vehicle noise, arrive the purpose that reduces the vehicle noise, can alleviate the weight of acoustical material, but its surface density still reaches 500～2000g/m
2Though, alleviating to some extent than traditional product weight, overall weight is still heavier.Chinese patent application CN200410056811.X (publication number CN1718896 and for example, open day 2006.01.11) a kind of " automotive interior equipment acoustical material " disclosed, by improving the composition of bonding agent, multiple fiber is bonded together, reduce the objectionable constituent discharging of acoustical material when being heated to reach, have little significance improving sound-absorbing effect and weight reduction.
At present, having the lighter product of better result of use and weight is シ Application サ レ one ト that SUMITOMO CHEMICAL 3M company (Sumitomo ス リ one エ system Co., Ltd.) produces, this product is the integrated non-woven fabric product of being made with specific process by the polypropylene fiber of diameter 2um and diameter 25um polyster fibre, and the thick surface density of its 10mm is 200g/m
2Product, sound-absorption coefficient during to 5KHz is 0.90, the sound-absorbing effect highly significant, Chinese patent application CN200380110744.9 (publication number CN1894570, open day on 01 10th, 2007) disclosed " acoustical material ", promptly be on the basis of above-mentioned adhesive-bonded fabric, by with it as substrate, and on its both sides the fixing emulsion sheet that constitutes of polyester long fibre, thereby can significantly improve its sound-absorbing effect in 300Hz～1800Hz section.Because the ultrafine fiber production technology complexity used of this product, price is higher, and domestic do not have a corresponding manufacturer yet, and inlet face density is 200g/m
2Every square of price of product about more than 60 yuan, so only on the high-grade car of part, use, limited it and applied.
Summary of the invention
The technical problem to be solved in the present invention is at the deficiencies in the prior art, and the high-performance acoustical material that a kind of raw material sources are wide, easily manufactured, sound-absorbing effect is good, price is lower is provided.
Another technical matters that the present invention will solve provides a kind of preparation method of above-mentioned acoustical material.
Last technical scheme of the present invention is such: a kind of high-performance acoustical material, its every 10mm thickness is by 3～8 layers of 10g/m
2Polypropylene spunbond cloth and the solid netted mixing short fiber layers that is clipped between the polypropylene spunbond cloth constitute, mix short fiber layers and form jointly by 1D polyester staple fiber 45～65%, 15D polyester staple fiber 20～40% and 1.5D hot melt polyester staple fiber 5～20%.
The fibre length of the 1D polyester staple fiber described in the above-mentioned high-performance acoustical material, 15D terylene short fiber peacekeeping 1.5D hot melt polyester staple fiber is 32～64mm.
The mixing short fiber layers thickness that is clipped in described in the above-mentioned high-performance acoustical material between each layer polypropylene spunbond cloth is basic identical.
Back of the present invention one technical scheme is such: a kind of preparation method of high-performance acoustical material comprises the steps: that (1) press material and form each material of preparation; (2) respectively 1D polyester staple fiber, 15D terylene short fiber peacekeeping 1.5D hot melt polyester staple fiber being carried out shredding in the cotton spinning opener handles; (3) after three kinds of polyester staple fibers will handling through shredding mix in the cotton spinning carding machine combing mix; (4) mix lapping by the mode of one deck polypropylene spunbond cloth, one deck mixing staple fibre; (5) hot briquetting is whole; (6) through the typing of colding pressing; (7) deposit after the rolling.
Hot briquetting temperature in the step described in the preparation method of above-mentioned high-performance acoustical material (5) is 180 ℃～210 ℃, and the time is 1～5 minute.
The setting temperature of colding pressing in the step described in the preparation method of above-mentioned high-performance acoustical material (6) is-10 ℃～10 ℃, and the time is 1～5 minute.
The present invention compared with prior art has following advantage:
(1) raw material sources are wide, raw material 1D polyster fibre, 15D polyster fibre, 1.5D hot melt terylene short fiber peacekeeping 10g/m that the present invention uses
2The technical requirement of polypropylene spunbond cloth relatively low, domestic all have production, and cheap, production cost is than imported product.
(2) sound-absorbing effect is good, and product of the present invention is measured through National Key Laboratory-building research chamber, South China Science ﹠ Engineering University subtropics, the product of 10mm thickness, and surface density is 200g/m
2, the sound-absorption coefficient during to 5KHz is 0.92.
(3) product of the present invention is easily manufactured, and technology is simple, utilizes existing cotton spinning process equipment just can produce qualified product.
Description of drawings
Below in conjunction with drawings and Examples the present invention is described in further detail, but does not constitute any limitation of the invention.
Fig. 1 is the structural representation of the specific embodiment of the invention 1;
Fig. 2 is the structural representation of the specific embodiment of the invention 2;
Fig. 3 is the structural representation of the specific embodiment of the invention 3;
Fig. 4 is the structural representation of the specific embodiment of the invention 4;
Fig. 5 is the structural representation of the specific embodiment of the invention 5;
Fig. 6 is the structural representation of the specific embodiment of the invention 6.
Embodiment
Technological process of the present invention is raw material preparation → staple fibre shredding → mixing combing → mixing lapping → hot briquetting → typing → rolling and storage of colding pressing, and details are as follows to each technological process below:
(1) raw material is prepared: be composition requirement, promptly press the weight of 1D polyester staple fiber, 15D terylene short fiber peacekeeping 1.5D hot melt polyester staple fiber and form according to acoustical material, and 10g/m
2Various materials are prepared in the number of plies requirement of polypropylene spunbond cloth.
(2) staple fibre shredding: be to utilize existing cotton spinning opener (opener), respectively 1D polyester staple fiber, 15D terylene short fiber peacekeeping 1.5D hot melt polyester staple fiber carried out shredding and handle, make fiber fluffy, even with convenient mixing combing.
(3) mix combing: be after three kinds of polyester staple fibers will handling through shredding mix in the cotton spinning carding machine after 7～8 road combings, make between three kinds of staple fibres interspersed mutually, to form the space network that three kinds of fibers are evenly distributed.
(4) mix lapping: be on request uniform composite fibre of combing and polypropylene spunbond cloth to be made up, to form sandwich construction, method is to mix lapping by the mode of one deck polypropylene spunbond cloth, one deck mixing staple fibre.
(5) hot briquetting: will mix lapping and send as in the baking oven, be heated to 180 ℃～210 ℃, time is 1～5 minute, and purpose is that 1.5D hot melt polyester staple fiber surface is melted, with 1D polyester staple fiber, 15D terylene short fiber peacekeeping 1.5D, hot melt terylene short fiber peacekeeping 10g/m
2The bonding integral body that becomes of polypropylene spunbond cloth.
(6) typing of colding pressing; Be in mould, to be cooled to-10 ℃～10 ℃ through the acoustical material after the thermoforming, and compression, filament contraction is finalized the design to design thickness, the time is 1～5 minute.
(7) rolling and storage: the acoustical material that will finalize the design through colding pressing is undertaken depositing after the rolling by the fixed length size after the assay was approved.
Embodiment 1
Consult shown in Figure 1, high-performance acoustical material of the present invention, thickness is 10mm, is by 3 layers of 10g/m
2Polypropylene spunbond cloth 1 and the two-layer solid netted mixing short fiber layers 2 that is clipped between the polypropylene spunbond cloth constitute, mix short fiber layers 2 and form jointly by 1D polyester staple fiber 65%, 15D polyester staple fiber 30% and 1.5D hot melt polyester staple fiber 5%; Wherein the fibre length of 1D polyester staple fiber, 15D terylene short fiber peacekeeping 1.5D hot melt polyester staple fiber is 32mm; Mixing short fiber layers 2 thickness that are clipped between each layer polypropylene spunbond cloth are basic identical.
Consult shown in Figure 2, high-performance acoustical material of the present invention, thickness is 20mm, is by 10 layers of 10g/m
2Polypropylene spunbond cloth 1 and be clipped in the solid netted mixing short fiber layers 2 of between the polypropylene spunbond cloth 9 layers and constitute, mix short fiber layers 2 and form jointly by 1D polyester staple fiber 50%, 15D polyester staple fiber 40% and 1.5D hot melt polyester staple fiber 10%; Wherein the fibre length of 1D polyester staple fiber, 15D terylene short fiber peacekeeping 1.5D hot melt polyester staple fiber is 64mm; Mixing short fiber layers 2 thickness that are clipped between each layer polypropylene spunbond cloth are basic identical.
Embodiment 3
Consult shown in Figure 3, high-performance acoustical material of the present invention, thickness is 10mm, is by 8 layers of 10g/m
2Polypropylene spunbond cloth 1 and be clipped in the solid netted mixing short fiber layers 2 of between the polypropylene spunbond cloth 7 layers and constitute, mix short fiber layers 2 and form jointly by 1D polyester staple fiber 60%, 15D polyester staple fiber 25% and 1.5D hot melt polyester staple fiber 15%; Wherein the fibre length of 1D polyester staple fiber, 15D terylene short fiber peacekeeping 1.5D hot melt polyester staple fiber is 50mm; Mixing short fiber layers 2 thickness that are clipped between each layer polypropylene spunbond cloth are basic identical.
Embodiment 4
Consult shown in Figure 4, high-performance acoustical material of the present invention, thickness is 30mm, is by 18 layers of 10g/m
2Polypropylene spunbond cloth 1 and be clipped in the solid netted mixing short fiber layers 2 of between the polypropylene spunbond cloth 17 layers and constitute, mix short fiber layers 2 and form jointly by 1D polyester staple fiber 45%, 15D polyester staple fiber 35% and 1.5D hot melt polyester staple fiber 20%; Wherein the fibre length of 1D polyester staple fiber, 15D terylene short fiber peacekeeping 1.5D hot melt polyester staple fiber is 45mm; Mixing short fiber layers 2 thickness that are clipped between each layer polypropylene spunbond cloth are basic identical.
Embodiment 5
Consult shown in Figure 5, high-performance acoustical material of the present invention, thickness is 50mm, is by 20 layers of 10g/m
2Polypropylene spunbond cloth 1 and be clipped in the solid netted mixing short fiber layers 2 of between the polypropylene spunbond cloth 19 layers and constitute, mix short fiber layers 2 and form jointly by 1D polyester staple fiber 50%, 15D polyester staple fiber 40% and 1.5D hot melt polyester staple fiber 10%; Wherein the fibre length of 1D polyester staple fiber, 15D terylene short fiber peacekeeping 1.5D hot melt polyester staple fiber is 60mm; Mixing short fiber layers 2 thickness that are clipped between each layer polypropylene spunbond cloth are basic identical.
Embodiment 6
Consult shown in Figure 6, high-performance acoustical material of the present invention, thickness is 15mm, is by 10 layers of 10g/m
2Polypropylene spunbond cloth 1 and be clipped in the solid netted mixing short fiber layers 2 of between the polypropylene spunbond cloth 9 layers and constitute, mix short fiber layers 2 and form jointly by 1D polyester staple fiber 60%, 15D polyester staple fiber 30% and 1.5D hot melt polyester staple fiber 10%; Wherein the fibre length of 1D polyester staple fiber, 15D terylene short fiber peacekeeping 1.5D hot melt polyester staple fiber is 64mm; Mixing short fiber layers 2 thickness that are clipped between each layer polypropylene spunbond cloth are basic identical.
Experimental example 1
Each embodiment sound-absorbing effect test
Method of testing: the measurement part 2 of acoustical absorption coefficient and acoustic impedance in the acoustic impedance pipe: transfer function method (GB/T18696.2-2002).Thickness 10mm, surface density 200g/m
2
Contrast material: the product シ of SUMITOMO CHEMICAL 3M company Application サ レ one ト, thickness 10mm, surface density 200g/m
2
Experimental result sees Table 1.
Table 1 sound-absorbing effect test effect
| Acoustic absorptivity (%) | 1000Hz | 2000Hz | 3000Hz | 4000Hz | 5000Hz |
| Embodiment 1 | ≥10? | ≥26? | ≥45? | ≥65? | ≥80? |
| |
≥25? | ≥40? | ≥70? | ≥80? | ≥93? |
| Embodiment 3 | ≥18? | ≥32? | ≥60? | ≥80? | ≥92? |
| Embodiment 4 | ≥40? | ≥50? | ≥70? | ≥85? | ≥94? |
| Embodiment 5 | ≥45? | ≥60? | ≥80? | ≥90? | ≥95? |
| Embodiment 6 | ≥30? | ≥50? | ≥70? | ≥80? | ≥95? |
| Contrast material | ≥14? | ≥36? | ≥58? | ≥78? | ≥89? |
As can be seen from Table 1, except that embodiment 1, sound-absorption coefficient all 〉=0.92 has extraordinary sound-absorbing effect to acoustical material of the present invention during to 5KHz, and the sound-absorbing that can be used for automobile is handled.
Claims (5)
1. an acoustical material is characterized in that the every 10mm thickness of this acoustical material is by 3～8 layers of 10g/m
2Polypropylene spunbond cloth and constitute in the solid netted mixing short fiber layers that is clipped between the polypropylene spunbond cloth, mix short fiber layers and form jointly by 1D polyester staple fiber 45～65%, 15D polyester staple fiber 20～40% and 1.5D hot melt polyester staple fiber 5～20%; The fibre length of described 1D polyester staple fiber, 15D terylene short fiber peacekeeping 1.5D hot melt polyester staple fiber equates, is 32～64mm.
2. acoustical material according to claim 1 is characterized in that, the described mixing short fiber layers thickness that is clipped between each layer polypropylene spunbond cloth is basic identical.
3. the preparation method of acoustical material according to claim 1 is characterized in that comprising the steps: that (1) press material and form and prepare each material; (2) respectively 1D polyester staple fiber, 15D terylene short fiber peacekeeping 1.5D hot melt polyester staple fiber being carried out shredding in the cotton spinning opener handles; (3) after three kinds of polyester staple fibers will handling through shredding mix in the cotton spinning carding machine combing mix; (4) mix lapping by the mode of one deck polypropylene spunbond cloth, one deck mixing staple fibre; (5) hot briquetting is whole; (6) through the typing of colding pressing; (7) deposit after the rolling.
4. the preparation method of acoustical material according to claim 3 is characterized in that, the hot briquetting temperature in the step (5) is 180 ℃～210 ℃, and the time is 1～5 minute.
5. the preparation method of acoustical material according to claim 3 is characterized in that, the setting temperature of colding pressing in the step (6) is-10 ℃～10 ℃, and the time is 1～5 minute.
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| CN101471070B true CN101471070B (en) | 2011-04-27 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102501483A (en) * | 2011-09-30 | 2012-06-20 | 苏州凯威达制衣有限责任公司 | Sound-absorption composite fabric |
| CN105144284B (en) * | 2013-04-26 | 2019-06-04 | 株式会社自动网络技术研究所 | Sound-absorbing material and harness with sound-absorbing material |
| CN103358653B (en) * | 2013-06-19 | 2015-07-15 | 江苏佰家丽新材料科技有限公司 | Method for preparing sound-absorbing body with sound-absorbing function |
| CN104123929A (en) * | 2014-07-03 | 2014-10-29 | 东华大学 | Low-frequency sound-absorbing material in sandwich structure lamination and manufacturing method thereof |
| CN106120148B (en) * | 2016-08-23 | 2018-06-08 | 湖北崇高科工有限公司 | A kind of preparation method of thermoforming heat-insulating and sound-absorbing cotton |
| CN109881361A (en) * | 2019-04-11 | 2019-06-14 | 广州三木汽车部件有限公司 | A kind of felt manufacturing technology |
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| CN1449908A (en) * | 2003-05-09 | 2003-10-22 | 蒋维祖 | Car inner decorative liner board made from thermoplastic fibre foamed material and method for producing same |
| CN1605462A (en) * | 2004-09-07 | 2005-04-13 | 江阴市延利塑料制品有限公司 | Environment-friendly type thermoplastic natural palm fibrilia composite base material for automobile interior decoration |
| WO2005052529A1 (en) * | 2003-11-27 | 2005-06-09 | Yugen Kaisha Daiwa | Sound absorbing material |
| JP2005263118A (en) * | 2004-03-19 | 2005-09-29 | Howa Seni Kogyo Kk | Sound absorbing material for vehicle |
| CN1991233A (en) * | 2005-12-29 | 2007-07-04 | 上海杰事杰新材料股份有限公司 | Thermoplastic light-duty composite plate and preparing method thereof |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1449908A (en) * | 2003-05-09 | 2003-10-22 | 蒋维祖 | Car inner decorative liner board made from thermoplastic fibre foamed material and method for producing same |
| WO2005052529A1 (en) * | 2003-11-27 | 2005-06-09 | Yugen Kaisha Daiwa | Sound absorbing material |
| JP2005263118A (en) * | 2004-03-19 | 2005-09-29 | Howa Seni Kogyo Kk | Sound absorbing material for vehicle |
| CN1605462A (en) * | 2004-09-07 | 2005-04-13 | 江阴市延利塑料制品有限公司 | Environment-friendly type thermoplastic natural palm fibrilia composite base material for automobile interior decoration |
| CN1991233A (en) * | 2005-12-29 | 2007-07-04 | 上海杰事杰新材料股份有限公司 | Thermoplastic light-duty composite plate and preparing method thereof |
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