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A kind of preparation method of sound-absorbing cotton

A technology of sound-absorbing cotton and square grooves is applied in the field of sound-absorbing materials, which can solve the problems of difficulty in recycling waste of sound-absorbing cotton corners, 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
HUBEI TIANYUN NOISE REDUCTION & ANTIVIBRATION NEW MATERIAL
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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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  • A kind of preparation method of sound-absorbing cotton
  • A kind of preparation method of sound-absorbing cotton

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] see Figure 1-2 As shown, a sound-absorbing cotton, the sound-absorbing cotton main body 1 includes a square groove 2, a circular through hole 3, a trapezoidal groove 4, double-sided edge banding 5, a sound-absorbing middle layer 6, a sound-absorbing outer layer 7, and a sound-absorbing inner layer 8 , sound-absorbing through-holes 9 and sound-absorbing mesh holes 10, the lower side of the sound-absorbing cotton main body 1 is provided with a square groove 2, and the upper central position of the sound-absorbing cotton main body 1 is provided with a trapezoidal groove 4, and the sound-absorbing cotton main body 1 is provided with a trapezoidal groove 4. The middle part of the cotton main body 1 is provided with a circular through hole 3. The center of the internal structure of the sound-absorbing cotton main body 1 is designed as a sound-absorbing inner layer 8, and the two ends of the sound-absorbing inner layer 8 are wrapped with a sound-absorbing middle layer 6. The ...

Embodiment 2

[0033] A sound-absorbing cotton. The difference between this embodiment and Embodiment 1 is that the sound-absorbing middle layer 6 is made of algae plant fibers evenly laid and pressed.

[0034] Algae plants are squeezed and dried to obtain white algae plant fibers, which have the same excellent sound-absorbing function as wood shavings.

Embodiment 3

[0036] A sound-absorbing cotton. The difference between this embodiment and Embodiment 1 is that the sound-absorbing inner layer 8 is made of silicon rubber foam.

[0037] Silicone rubber plastic is dissolved at high temperature into a liquid state and then cooled rapidly by inert gas. The interior contains a bubble structure to obtain silicone rubber foam. Silicone rubber foam has the same excellent sound-absorbing function as polylactate fiber.

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Abstract

The invention discloses a preparation method of new sound-absorbing cotton. The sound-absorbing cotton body includes a rectangular groove, round through holes, a trapezoid groove, a double-face edge sealing, sound-absorbing intermediate layers, sound-absorbing external layers, a sound-absorbing inner layer, sound-absorbing penetrating holes, and sound-absorbing netted holes. The rectangular grooveis provided at the lower part, inclined to the right side, of the sound-absorbing cotton body, the upper center of the sound-absorbing cotton body is provided with the trapezoid groove, and the middle part of the sound-absorbing cotton body is provided with the round through holes. The sound-absorbing inner layer is arranged at the center of the inner structure of the sound-absorbing cotton body,two ends of the sound-absorbing inner layer are coated with the sound-absorbing intermediate layers, and two ends of the sound-absorbing intermediate layers are coated with the sound-absorbing external layers. According to reasonable raw material selection and ratio, the prepared new sound-absorbing cotton is light in weight, good in sound-absorbing effect and performance and decoration, and convenient for dull knife staggered processing, and allows the processing work efficiency to be improved. Green materials are adopted, so that pollution is reduced. The sound-absorbing cotton is eco-friendly and convenient for recycling.

Description

technical field [0001] The invention relates to the technical field of sound-absorbing materials, in particular to a method for preparing sound-absorbing cotton. 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, light weight, and comfort. Traditional PET (polyethylene terephthalate) / PP (polypropylene) two-component sound-absorbing cotton has been widely used in the field 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 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 cotto...

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): B32B37/12B32B38/00
Inventor 王皆晴何卫军李超李峰
Owner HUBEI TIANYUN NOISE REDUCTION & ANTIVIBRATION NEW MATERIAL