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Preparation method of mesoporous MSQ aerogel/glass fiber composite material

A technology of glass fiber and composite materials, applied in the field of thermal insulation materials, to achieve the effect of improving mechanical properties and improving thermal insulation performance

Pending Publication Date: 2020-07-03
PAN ASIAN MICROVENT TECH JIANGSU CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there is no research report on the preparation of mesoporous MSQ airgel / glass fiber composites by using glass fiber as a reinforcing phase to reinforce mesoporous MSQ airgel

Method used

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  • Preparation method of mesoporous MSQ aerogel/glass fiber composite material
  • Preparation method of mesoporous MSQ aerogel/glass fiber composite material
  • Preparation method of mesoporous MSQ aerogel/glass fiber composite material

Examples

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Embodiment 1

[0030] Embodiment 1: see figure 1

[0031] A preparation method of a mesoporous MSQ airgel / glass fiber composite material containing an infrared shading agent, comprising the following steps:

[0032] 1) Mix and stir 32 g of cetyltrimethylammonium chloride, 100 mL of methyltrimethoxysilane, 250 mL of methanol and 50 mL of hydrochloric acid (0.001 mol / L), then add 250 mL of 1 -2 propylene oxide, stirred for 2 min and then poured into a fixed container to obtain a sol; add 25mL of titanium sol to the sol and fully stir to obtain a composite sol;

[0033] 2) Completely impregnate the cut high-silica glass fiber mat in the composite sol, transfer the glass fiber mat impregnated with the composite sol into a plastic box and seal it;

[0034] 3) Put the sealed plastic box in a microwave dryer for microwave curing, set the dehumidification rate to 20%, microwave power to 250 W, and curing time to 12 minutes; add methanol to the obtained gel / glass fiber composite material for solven...

Embodiment 2

[0037] Embodiment 2: see figure 2

[0038] A preparation method of mesoporous MSQ airgel / glass fiber composite material containing an infrared opacifying agent, the volume of the titanium sol in step 1) in the embodiment is changed to 50mL, and the rest of the steps are the same as in the embodiment 1.

[0039] The prepared mesoporous MSQ airgel / glass fiber composite material containing infrared opacifying agent has abundant pores and uniform morphology, and its thermal conductivity is 0.028 W / (m K) at room temperature and 0.092 W at high temperature (600°C). / (m•K).

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Abstract

The invention discloses a preparation method of a mesoporous MSQ aerogel / glass fiber composite material. The method comprises the following steps: proportionally mixing and stirring hexadecyl trimethyl ammonium chloride, hydrochloric acid, methanol and methyltrimethoxysilane, adding a gel accelerator, stirring, and pouring into a fixed container to obtain sol; pouring an infrared opacifying agentinto the sol in proportion to obtain composite sol; dipping a glass fiber felt in the composite sol; curing the gel / glass fiber composite material; and drying the gel / glass fiber composite material. The mesoporous MSQ aerogel and the glass fiber mat are compounded, so that the mechanical properties of the mesoporous MSQ aerogel can be improved; and the mesoporous MSQ aerogel is modified by adopting infrared opacifying agent such as titanium sol or nanometer titanium dioxide and the like, so that the heat insulation performance of the glass fiber felt at high temperature can be improved.

Description

technical field [0001] The invention relates to the field of thermal insulation materials, in particular to a method for preparing a mesoporous MSQ airgel / glass fiber composite material. Background technique [0002] Methylsilsesquioxane (MSQ) airgel is a kind of silica airgel with methyl groups, that is, Si-CH 3 bonds to replace part of the Si-O-Si bonds in the Si-O network. Due to the introduction of methyl groups, the structure of MSQ airgel will not be the three-dimensional space network structure of traditional silica airgel, but a discontinuous network of bead chains. The introduction of methyl groups into the siloxane network reduces the degree of crosslinking and reduces the hydroxyl content on the surface of traditional silica aerogels, making MSQ aerogels more resilient than traditional silica aerogels. In addition, the interaction force between the methyl groups makes the aerogel exhibit greater resilience to improve toughness when it is compressed. There are a...

Claims

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Application Information

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IPC IPC(8): C04B30/02C04B38/00
CPCC04B30/02C04B2201/32C04B14/064C04B14/305C04B14/42C04B38/0045
Inventor 郭兴忠李子虓刘富雷伟张云丁荣华
Owner PAN ASIAN MICROVENT TECH JIANGSU CORP
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