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Polyvinyl chloride-based composite material suitable for medium-high frequency sound absorption and preparation method thereof

A technology of polyvinyl chloride and composite materials, applied in the field of organic polymer compounds, can solve the problems of high maintenance cost, difficult construction, high density, etc.

Pending Publication Date: 2021-04-23
WUHAN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Inorganic porous materials often require complex processes to achieve good sound absorption effects, and due to their high density and high maintenance costs, they cause certain difficulties in construction, and the sound absorption performance of such materials in the medium and high frequency range is not ideal.
The mechanical energy after the sound wave enters can be reflected multiple times in the damping material with rich pore structure, and the refraction can be converted into heat energy. Cost advantage, but due to its poor light and thermal stability, it needs to be modified to further improve the sound absorption performance of the material through structural design

Method used

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  • Polyvinyl chloride-based composite material suitable for medium-high frequency sound absorption and preparation method thereof
  • Polyvinyl chloride-based composite material suitable for medium-high frequency sound absorption and preparation method thereof
  • Polyvinyl chloride-based composite material suitable for medium-high frequency sound absorption and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0040] A polyvinyl chloride-based composite material suitable for medium and high-frequency sound absorption, its raw material composition and parts by weight are: 100 parts of polyvinyl chloride, 4 parts of organotin stabilizer, 130 parts of plasticizer, acrylonitrile-butadiene -26 parts of styrene terpolymers, prepared through the following steps:

[0041] (1) Weigh the raw materials in proportion, and dry the powders of polyvinyl chloride and acrylonitrile-butadiene-styrene terpolymer in a constant temperature drying oven at 60°C for subsequent use;

[0042] (2) Put the above-mentioned polyvinyl chloride, organotin stabilizer, plasticizer, and acrylonitrile-butadiene-styrene terpolymer in a high-speed mixer and stir for 5 seconds at 500 rpm / s, and stir for 3 times to obtain a uniform mixture composite powder;

[0043] (3) Put the uniformly mixed composite powder into a Harp torque rheometer for melt blending, the melting temperature is 95°C, the rotation speed is 40rpm / min...

Embodiment 2

[0046] A polyvinyl chloride-based composite material suitable for medium and high-frequency sound absorption, its raw material composition and parts by weight are: 100 parts of polyvinyl chloride, 4 parts of organotin stabilizer, 130 parts of plasticizer, acrylonitrile-butadiene - 26 parts of styrene terpolymer, 3 parts of AC blowing agent, prepared by the following steps:

[0047] (1) Weigh the raw materials in proportion, and dry the powders of polyvinyl chloride, acrylonitrile-butadiene-styrene terpolymer and AC foaming agent in a constant temperature drying oven at 60°C for subsequent use;

[0048] (2) The above-mentioned polyvinyl chloride, organotin stabilizer, plasticizer, acrylonitrile-butadiene-styrene terpolymer, and AC foaming agent are placed in a high-speed mixer and stirred for 5 s at 500 rpm / s, Stir 3 times to obtain a uniformly mixed composite powder;

[0049] (3) Put the uniformly mixed composite powder into a Harp torque rheometer for melting and blending, t...

Embodiment 3

[0053] A polyvinyl chloride-based composite material suitable for medium and high-frequency sound absorption, its raw material composition and parts by weight are: 100 parts of polyvinyl chloride, 4 parts of organotin stabilizer, 130 parts of plasticizer, acrylonitrile-butadiene - 26 parts of styrene terpolymer, 37 parts of diatomaceous earth, 3 parts of AC foaming agent, prepared by the following steps:

[0054] (1) Weigh the raw materials in proportion, and dry the powders of polyvinyl chloride, acrylonitrile-butadiene-styrene terpolymer, diatomaceous earth, and AC foaming agent in a constant temperature drying oven at 60°C spare;

[0055] (2) The above-mentioned polyvinyl chloride, organic tin stabilizer, plasticizer, acrylonitrile-butadiene-styrene terpolymer, diatomaceous earth, and AC foaming agent are placed in a high-speed mixer and stirred at 500rpm / s Stir for 5 seconds, and stir for 3 times to obtain a uniformly mixed composite powder;

[0056] (3) Put the uniforml...

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Abstract

The invention provides a polyvinyl chloride-based composite material suitable for medium-high frequency sound absorption and a preparation method thereof. The polyvinyl chloride-based composite material comprises the following raw material components by mass: 100 parts of polyvinyl chloride, 3-5 parts of an organic tin stabilizer, 100-130 parts of a plasticizer, 25-30 parts of an acrylonitrile-butadiene-styrene terpolymer, 0-50 parts of diatomite and 0-4 parts of an AC foaming agent. The polyvinyl chloride-based composite material provided by the invention has excellent sound absorption performance, the average sound absorption coefficient within 1000-6300Hz is 0.2-0.35, and the polyvinyl chloride-based composite material is suitable for medium-high frequency sound absorption materials.

Description

technical field [0001] The invention belongs to the technical field of organic polymer compounds, and in particular relates to a polyvinyl chloride-based composite material suitable for medium-high frequency sound absorption and a preparation method thereof. Background technique [0002] With the rapid development of modern industry, noise pollution is becoming more and more serious, which has become one of the main environmental problems worldwide. Therefore, it is of great practical significance to develop sound-absorbing materials with excellent performance and low cost. The sound-absorbing material absorbs and consumes incident sound energy by virtue of its own porosity, thin-film effect or resonance effect. Common sound-absorbing materials include porous materials, perforated plate resonance materials, and thin-film materials. Among them, porous materials are widely used in production and life because of their various types and low process costs. Inorganic porous mater...

Claims

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Application Information

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IPC IPC(8): C08L27/06C08L55/02C08K13/04C08K7/26C08K5/58C08K5/523C08J9/10
Inventor 江学良朱雯雯游峰姚楚彭子童刘仿军
Owner WUHAN INSTITUTE OF TECHNOLOGY
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