Lightweight noise reduction composite foam material and method for preparing same

A composite foam and noise reduction technology, applied in the field of polymer materials, can solve the problems of large sound absorption coefficient, high low-frequency sound absorption coefficient, poor processing performance, etc., achieve wide applicable frequency range, improve low-frequency sound absorption, and improve mechanical properties Effect

Inactive Publication Date: 2018-08-17
合肥卓创新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Porous sound-absorbing materials have the advantages of large high-frequency sound absorption coefficient and small specific gravity, but low low-frequency sound absorption coefficient; resonant sound-absorbing structural materials have high low-frequency sound absorption coefficient, but poor processing performance
At present, the sound-absorbing materials used in my country are mainly ultra-fine glass wool, which has a large sound absorption coefficient and a small specific gravity, but its low strength, brittleness, easy to break, easy to fly, and dust absorption have severely restricted its application.

Method used

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  • Lightweight noise reduction composite foam material and method for preparing same

Examples

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Comparison scheme
Effect test

Embodiment 1

[0034] A preparation method of lightweight noise-reducing composite foam material, comprising the following steps:

[0035] (1) Put 42 parts of polyvinyl chloride, 7 parts of styrene-butadiene rubber, 10 parts of glass microspheres, 2 parts of glass fiber, 0.3 parts of lubricant, 0.2 parts of antioxidant, and 0.5 parts of coupling agent into a high-speed mixer. Evenly, control the speed of the high mixer to 700rpm, the temperature is 30°C, and mix for 15 minutes;

[0036] (2) Add 14 parts of rock wool, and then knead on an open kneading machine to obtain kneading materials. Control the speed of the kneading machine at 500 rpm, kneading temperature at 220°C, and kneading time for 10 minutes;

[0037] (3) Put the kneaded material into a mould, add 0.5 parts of foaming agent, heat up and foam in an oven, and control the temperature of the oven at 180-200°C to obtain the lightweight noise-reducing composite foam material.

Embodiment 2

[0039] A preparation method of lightweight noise-reducing composite foam material, comprising the following steps:

[0040] (1) Put 62 parts of polyvinyl chloride, 15 parts of styrene-butadiene rubber, 20 parts of glass beads, 8 parts of glass fiber, 0.8 parts of lubricant, 0.6 parts of antioxidant, and 0.9 parts of coupling agent into a high-speed mixer. Evenly, control the speed of the high mixer to 500rpm, the temperature is 60°C, and mix for 5 minutes;

[0041] (2) Add 23 parts of rock wool, and then knead on an open kneading machine to obtain kneading materials. Control the speed of the kneading machine at 700 rpm, kneading temperature at 180°C, and kneading time for 5 minutes;

[0042] (3) Put the kneaded material into a mold, add 1.5 parts of foaming agent, heat up and foam in an oven, and control the temperature of the oven at 175-195°C to obtain the lightweight noise-reducing composite foam material.

Embodiment 3

[0044] A preparation method of lightweight noise-reducing composite foam material, comprising the following steps:

[0045] (1) Put 50 parts of polyvinyl chloride, 11 parts of styrene-butadiene rubber, 15 parts of glass microspheres, 5 parts of glass fiber, 0.5 parts of lubricant, 0.4 parts of antioxidant, and 0.7 parts of coupling agent into a high-speed mixer. Evenly, control the speed of the high mixer to 500rpm, the temperature is 40°C, and mix for 10 minutes;

[0046] (2) Add 19 parts of rock wool, and then knead on an open kneading machine to obtain kneading materials. Control the speed of the kneading machine at 600 rpm, kneading temperature at 195°C, and kneading time for 8 minutes;

[0047] (3) Put the kneaded material into a mold, add 1 part of foaming agent, heat up and foam in an oven, and control the temperature of the oven at 175-190°C to obtain the lightweight noise-reducing composite foam material.

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Abstract

The invention discloses a lightweight noise reduction composite foam material and a method for preparing the same. The lightweight noise reduction composite foam material comprises, by weight, 42-62 parts of polyvinyl chloride, 14-23 parts of rock wool, 7-15 parts of styrene butadiene rubber, 10-20 parts of glass micro-spheres, 2-8 parts of glass fibers, 0.5-1.5 parts of foaming agents, 0.3-0.8 part of lubricants, 0.2-0.6 part of antioxidants and 0.5-0.9 part of coupling agents. The lightweight noise reduction composite foam material and the method have the advantages that the lightweight noise reduction composite foam material which is a foamable polyvinyl chloride and inorganic matter mixed sound absorption material prepared by the aid of the method is lightweight and is high in strength, and good sound absorption effects can be realized by the lightweight noise reduction composite foam material; low-frequency sound absorption of foamable polymers can be improved by the aid of the excellent low-frequency sound absorption performance of inorganic materials, and the low and medium-frequency sound absorption performance of the lightweight noise reduction composite foam material canbe greatly improved by the added rock wool; the polyvinyl chloride can be reinforced by the glass fibers and is filled with the glass micro-spheres, and effects of integrally reducing the density of polyvinyl chloride composite materials can be realized by hollow structures of the glass micro-spheres.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a lightweight noise-reducing composite foam material and a preparation method thereof. Background technique [0002] With the development of industry, noise has become one of the three major sources of pollution in the world today. Noise not only harms people's auditory system, makes people tired and deaf, but also accelerates the aging of buildings and mechanical structures, and affects the accuracy and service life of equipment and instruments. The problem of noise control has gradually attracted the attention of governments and scientific and technological workers in various countries. At present, the main solution is to use sound-absorbing materials for sound absorption and noise reduction. According to the sound absorption mechanism, sound-absorbing materials can be divided into two categories: porous sound-absorbing materials and resonant sound-absorbing structur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08L9/06C08K13/04C08K7/14C08K7/28C08K7/10C08J9/14C08J5/04
CPCC08J5/043C08J9/0066C08J9/142C08J2203/12C08J2327/06C08J2409/06
Inventor 汪金云
Owner 合肥卓创新材料有限公司
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