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A preparation method of two-component sound-absorbing cotton with super sound-absorbing effect

A sound-absorbing cotton, two-component technology, applied in the field of sound-absorbing materials, can solve the problems of difficulty in recycling the wastes of sound-absorbing cotton, poor shockproof and thermal insulation effects, and unsatisfactory noise reduction effect, so as to increase the aesthetic feeling, Highly decorative, lightweight effect

Active Publication Date: 2020-02-04
GUANGDE TIANYUN NEW TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, PET polyester fiber is a chemical synthetic fiber with a high melting point (above 250°C) and is difficult to degrade, which makes the edge sealing mold temperature of traditional PET / PP two-component sound-absorbing cotton products high
At the same time, it is difficult to recycle PET / PP two-component sound-absorbing cotton scraps
[0003] The existing sound-absorbing felt for automobiles has sound-absorbing, fire-proof, shock-proof, heat-insulating, etc., but the sound-absorbing effect is still not up to the expected effect, and the shock-proof and heat-insulating effects are not very good, and the hardness is not enough, which directly affects the quality of the product. The service life, the radiation around the existing car is relatively large, it is easy to cause harm to the human body

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A two-component sound-absorbing cotton with super sound-absorbing effect. The two-component sound-absorbing cotton includes a main cotton core, an outer surface layer, a middle surface layer, an inner surface layer, a double-sided edge sealing, a circular through hole, a square groove, and three A pointed protruding platform, a sound-absorbing cavity, a sound-absorbing tube and a V-shaped sound-absorbing hole, the edge of the main body cotton core is fixed and designed to be double-sided sealing, and the main body cotton core is fixedly provided with two symmetrical circular through holes, The central position of the upper side of the main body cotton core is provided with a square groove, and the middle position of the lower side of the main body cotton core is fixedly designed with a three-pointed protrusion platform.

[0022] Further, the internal structure of the main cotton core is designed with two outer surface layers, two middle surface layers and one inner surface ...

Embodiment 2

[0035] A two-component sound-absorbing cotton with super sound-absorbing effect. The difference between this embodiment and Embodiment 1 is that the middle surface layer is made by uniformly laying and pressing plant fibers.

[0036] The plant straws or leaves are squeezed and dried to obtain white plant fibers. The plant fibers and the polylactate plastic fiber layer have the same excellent sound absorption function.

Embodiment 3

[0038] A two-component sound-absorbing cotton with super sound-absorbing effect. The difference between this embodiment and the first embodiment is that the middle surface layer is made of silicone rubber foam.

[0039] The silicone rubber plastic is dissolved into a liquid at high temperature and then quickly cooled by passing inert gas. The inside contains a bubble structure to obtain a silicone rubber foam. The silicone rubber foam and the polylactate plastic fiber layer have the same excellent sound absorption function.

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Abstract

The invention discloses a preparation method of bicomponent sound-absorbing cotton having a super strong sound-absorbing effect, wherein the bicomponent sound-absorbing cotton includes a main body cotton core, an outer surface layer, a middle surface layer, an inner surface layer, a double-sided sealing edge, circular through holes, a square groove, a three-sharp protruding platform, a sound-absorbing cavity, a sound-absorbing guide pipe and V-shaped sound-absorbing holes; the edge part of the main body cotton core is fixedly designed as the double-sided sealing edge; the main body cotton core is fixedly provided with two symmetrical circular through holes, the center position of the upper side of the main body cotton core is provided with the square groove, and the middle position of the lower side of the main body cotton core is fixedly provided with the three-sharp protruding platform. The bicomponent sound-absorbing cotton having the super strong sound-absorbing effect has the advantages of reasonable material selection, scientific pressing molding, scientific material proportion, good sound-absorbing effect and performance, high decoration and convenient folding cutting processing, and improves the working efficiency of processing; green materials are adopted, so that the pollution is reduced, the environmental protection function is increased, and the sound-absorbing cotton are convenient to recycle and utilize.

Description

Technical field [0001] The invention relates to the technical field of sound-absorbing materials, in particular to a method for preparing two-component sound-absorbing cotton with super sound-absorbing effect. Background technique [0002] With the progress of society and the continuous improvement of people's consumption level, customers have higher and higher requirements for automobile sound absorption, sound insulation, lightweight, and comfort. Traditional PET (polyethylene terephthalate) / PP (polypropylene) two-component sound-absorbing cotton has been widely used in the fields of automotive sound insulation and noise reduction, which greatly improves the NVH performance of the vehicle. However, PET polyester fiber is a chemical synthetic fiber with high melting point (above 250°C) and difficult to degrade, which makes the edge sealing mold temperature of traditional PET / PP two-component sound-absorbing cotton products high. At the same time, it is difficult to recycle wast...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B3/08B32B3/24B32B9/02B32B9/04B32B27/02B32B27/08B32B27/12B32B27/32B32B27/36B32B33/00B32B37/02B32B38/04
CPCB32B3/085B32B3/266B32B5/022B32B5/26B32B9/02B32B9/047B32B27/08B32B27/12B32B27/32B32B27/36B32B33/00B32B37/02B32B38/04B32B2038/045B32B2250/20B32B2262/0253B32B2262/0276B32B2262/065B32B2307/102B32B2307/718
Inventor 王皆晴何卫军李超李峰
Owner GUANGDE TIANYUN NEW TECH
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