Method for preparing organic polymer/silica sound-absorbing thermal insulation material

A technology of silica and thermal insulation materials, applied in the field of materials, can solve the problems of low penetration rate of micropores and general sound absorption effect of materials, and achieve the effects of excellent sound absorption performance, excellent thermal insulation performance, and low thermal conductivity

Inactive Publication Date: 2012-02-01
XIAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage is that the sound absorption effect is average, and the penetration rate of the micropores of the material is low

Method used

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  • Method for preparing organic polymer/silica sound-absorbing thermal insulation material
  • Method for preparing organic polymer/silica sound-absorbing thermal insulation material
  • Method for preparing organic polymer/silica sound-absorbing thermal insulation material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] (1) Mix deionized water and water glass with a modulus of 3.2 at a volume ratio of 1:1, stir and heat to 80°C at a stirring rate of 200 rpm, then settle for 24 hours, and take the supernatant ;

[0023] (2) mixing the initiator, the organic polymer monomer and the inorganic acid uniformly to obtain a preset liquid; the initiator is ammonium persulfate, and the organic polymer monomer is acrylic acid, ethyl acrylate and methyl methacrylate, The inorganic acid is hydrochloric acid, and the mass concentration of the inorganic acid is 10%; the mass percentage of the initiator in the preset solution is 0.1%, the mass percentage of the organic polymer monomer is 99%, and the inorganic acid is the balance;

[0024] (3) Under the protection of nitrogen, heat the supernatant liquid described in step (1) to 55°C, and then slowly add the preset liquid described in step (2) dropwise at a stirring rate of 100 rpm A mixed solution is formed, and the dripping is stopped when the mixe...

Embodiment 2

[0029] The preparation process of this example is the same as that of Example 1, except that the initiator is azoisobutyronitrile or azoisobutyronitrile and ammonium persulfate, and the organic polymer monomers are acrylic acid and ethyl acrylate or a mixture of acrylic acid and butyl acrylate, or a mixture of acrylic acid and methyl methacrylate, or a mixture of acrylic acid, ethyl acrylate and butyl acrylate, or acrylic acid, butyl acrylate and methacrylic acid Mixtures of methyl esters, or mixtures of acrylic acid, ethyl acrylate, butyl acrylate and methyl methacrylate, or mixtures of methacrylic acid and acrylates, or mixtures of acrylic acid, methacrylic acid and acrylates , the acrylates are one or more of ethyl acrylate, butyl acrylate and methyl methacrylate, and the inorganic acid is sulfuric acid, nitric acid or phosphoric acid, or hydrochloric acid, sulfuric acid, nitric acid and phosphoric acid At least two.

Embodiment 3

[0031] (1) Mix deionized water and water glass with a modulus of 3.0 at a volume ratio of 1:3, stir and heat to 90°C at a stirring rate of 500 rpm, then settle for 36 hours, and take the supernatant ;

[0032] (2) mixing the initiator, the organic polymer monomer and the inorganic acid uniformly to obtain a preset liquid; the initiator is ammonium persulfate, and the organic polymer monomer is acrylic acid, butyl acrylate and methyl methacrylate, The inorganic acid is hydrochloric acid, and the mass concentration of the inorganic acid is 10%; the mass percentage of the initiator in the preset solution is 2.5%, the mass percentage of the organic polymer monomer is 72%, and the inorganic acid is the balance;

[0033] (3) Under the protection of argon, heat the supernatant solution described in step (1) to 95°C, and then slowly add the preset solution described in step (2) dropwise at a stirring rate of 200 rpm. The liquid forms a mixed solution, and the dripping is stopped when...

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Abstract

The invention discloses a method for preparing an organic polymer / silica sound-absorbing thermal insulation material, which comprises the following steps of: 1, mixing water and water glass, precipitating and taking supernate; 2, preparing preset solution; 3, slowly dripping the preset solution into the supernate to obtain a gel substance; 4, ageing and performing suction filtration; 5, washing and performing suction filtration; and 6, drying and crushing to obtain the organic polymer / silica sound-absorbing thermal insulation material. Porous silica is used as a framework material and interpenetrates with crylic acids to form a porous structure of an organics and inorganics interpenetrating network. The organic polymer / silica sound-absorbing thermal insulation material prepared by the method has high sound-absorbing performance and also has excellent heat preservation and thermal insulation performance.

Description

technical field [0001] The invention belongs to the technical field of materials, and in particular relates to a preparation method of an organic polymer / silicon dioxide composite sound-absorbing and heat-insulating material. Background technique [0002] With the development of modern science and technology and industry, noise pollution has become a worldwide problem, and sound absorption and noise reduction has gradually evolved into an important issue related to technology, the environment, the coordinated development of human beings, and even modern military affairs. Acoustic material ensues. The research and application of sound-absorbing materials is of great significance to the absorption and control of noise pollution. It has important applications in various fields of life and production, and has become a research hotspot in the field of research at home and abroad. At the same time, energy-saving buildings with good thermal insulation have been more widely recogni...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L33/02C08L33/12C08L33/08C08K3/36C08F220/06C08F220/18C08F220/14C09D133/02C09D133/08C09D133/12C09D7/12
Inventor 陈进
Owner XIAN UNIV OF SCI & TECH
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