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Green heat-preservation, heat-insulation and sound-absorption composite material and preparation method thereof

A composite material, thermal insulation technology, applied in the field of green thermal insulation and sound-absorbing composite materials and its preparation, can solve the problem that composite airgel materials have poor strength, cannot be applied to occasions with high environmental protection requirements, and cannot be mass-produced industrially and application issues, to achieve the effect of increasing the operating temperature range, blocking heat transfer, and increasing the application range

Pending Publication Date: 2021-05-28
浙江岩谷科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical solution disclosed in the invention patent CN2016100657559 prepares a rock wool-silicon aluminum airgel composite material, which has a good thermal insulation effect, but the material cannot be used indoors and meets environmental protection requirements except for industrial applications. higher occasions
[0007] The technical solution disclosed in the invention patent CN2014800338942 prepares a composite material of melamine foam and silicon airgel. The composite material has a good heat and sound insulation effect, but the composite airgel material has poor strength and cannot be used in large quantities. Industrial production and application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Mix deionized water, sodium lauryl sulfate, silane coupling agent KH550, and defoamer at a mass ratio of 100:8:0.5:0.2 to obtain a hydrophilic solvent, let it stand for 30 minutes, put it into a sprayer, and spray On the surface of the polyester fiber felt, the quality of the polyester fiber felt is 5-8g, and the density is 20kg / m3; the polyester fiber felt sprayed with the solution is left to stand for a period of time, then placed in an oven, baked at 120°C for 1 hour, and taken out stand-by. Mix 50-80 g of the silica-alumina water glass solution with water at a mass ratio of 1:3, add to 10% sulfuric acid solution and mix to obtain a mixed solution. Pour the mixed solution into the polyester fiber felt. After the mixed solution fully soaks the polyester fiber felt, a composite material of polyester fiber felt and silicon-aluminum-titanium wet gel is formed after 60 seconds. The composite material is aged in water for 8 hours, and then placed in into an ethanol soluti...

Embodiment 2

[0027] Mix deionized water, sodium lauryl sulfate, silane coupling agent KH550, and defoamer at a mass ratio of 100:5:0.5:0.2 to obtain a hydrophilic solvent, let it stand for 30 minutes, put it into a sprayer, and spray On the surface of the melamine fiber mat, the quality of the melamine fiber mat used is 4-8g, and the density is 16kg / m3; the melamine fiber mat sprayed with the solution is left to stand for a period of time, then placed in an oven, baked at 120°C for 1 hour, and taken out stand-by. Mix 40-60 g of the silica-alumina water glass solution with water at a mass ratio of 1:3, add to 10% sulfuric acid solution and mix to obtain a mixed solution. Pour the mixed solution into the melamine fiber felt. After the mixed solution fully soaks the melamine fiber felt, a composite material of melamine fiber felt and silicon-aluminum wet gel is formed after 60 seconds. Put the composite material into water for aging for 8 hours, and then put it in Carry out displacement extr...

Embodiment 3

[0029] Mix deionized water, sodium lauryl sulfate, silane coupling agent KH550, and defoamer at a ratio of 100:0.5:0.5:0.2 to obtain a hydrophilic solvent, let it stand for 30 minutes, put it into a sprayer, and spray it on the polyester On the surface of the fiber felt, the quality of the polyester fiber felt is 8 to 12g, and the density is 40kg / m3; the polyester fiber felt sprayed with the solution is left to stand for a period of time, then placed in an oven, baked at 120°C for 1 hour, and taken out to be use. Mix 50-80 g of silicon-aluminum-titanium water glass solution with water at a mass ratio of 1:3, add to 10% sulfuric acid solution and mix to obtain a mixed solution. Pour the mixed solution into the polyester fiber felt. After the mixed solution fully soaks the polyester fiber felt, a composite material of polyester fiber felt and silicon-aluminum-titanium wet gel is formed after 60 seconds. The composite material is aged in water for 8 hours, and then placed in int...

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Abstract

The invention belongs to the field of aerogel technology and organic fiber sound-absorbing composite materials, and relates to a green heat-preservation, heat-insulation and sound-absorbing composite material and a preparation method thereof. The green heat-preservation, heat-insulation and sound-absorbing composite material comprises an organic fiber felt and an aerogel material, the aerogel material is an aerogel material containing silicon aluminum or silicon aluminum titanium, and the mass ratio of the organic fiber felt to the aerogel material is 1: (2-12). The preparation method comprises the following steps of preparing a hydrophilic solvent with the surfactant concentration of 0.1-10%, spraying the hydrophilic solvent on the surface of the organic fiber felt, and drying the hydrophilic modified organic fiber felt at 80-150 DEG C after the hydrophilic solvent completely permeates into the organic fiber felt, and compounding a glass aqueous solution containing silicon-aluminum or silicon-aluminum-titanium components with the dried organic fiber felt to obtain a wet gel composite material, further putting the wet gel composite material into an ethanol solution for extraction and replacement, and drying the wet gel composite material after extraction and replacement to obtain a target product.

Description

technical field [0001] The invention belongs to the field of airgel technology and organic fiber sound-absorbing composite material, and specifically relates to a green thermal insulation and sound-absorbing composite material and a preparation method thereof. Background technique [0002] Airgel is a form of solid matter, and it is the smallest solid in the world, with a density as low as 3kg / m 3 , The common airgel is silica airgel, which was first prepared by American scientists in 1931. Silica airgel is a low-density, high-porosity nanoporous amorphous solid material with high light transmittance, also known as "blue smoke". It is a solid material with the lowest density and the lowest thermal conductivity known in the world. Its cavity size and network skeleton are both at the nanoscale, and it has unique properties in mechanics, acoustics, thermals, optics, etc., and has broad application prospects in aerospace, military, petrochemical, mining, electronics, automobil...

Claims

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Application Information

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IPC IPC(8): C04B30/02C04B111/40
CPCC04B30/02C04B2111/40C04B2201/32C04B2111/52C04B16/0683C04B16/0675
Inventor 许鹏学蒋首毅徐君胡艳张蓉艳
Owner 浙江岩谷科技有限公司