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Fiber reinforced flexible aerogel composite material and preparation method thereof

A technology of flexible airgel and composite materials, which is applied in the field of fiber-reinforced flexible airgel composite materials and its preparation, which can solve the problems of limited use, low strength, and poor toughness, and achieve low equipment cost, low density, and porous small size effect

Inactive Publication Date: 2019-02-15
BEIJING SATELLITE MFG FACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The most obvious disadvantages of traditional airgel are low strength and poor toughness. After fiber reinforcement, there are also problems of limited use in special-shaped structures and large-scale structures.

Method used

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  • Fiber reinforced flexible aerogel composite material and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043](1) Choose carbon fiber three-dimensional woven cloth as the reinforcement, and the fiber porosity is 80%; choose tert-butanol as the organic solvent, oxalic acid as the curing agent, sodium hydroxide as the catalyst, and polycyanonitrile as the matrix. Prepare 20wt% polycyanonitrile resin solution, add 5wt% curing agent and mix evenly, then add 1wt% catalyst to complete the organic solution preparation.

[0044] (2) After putting the carbon fiber three-dimensional woven cloth into the vacuum impregnation device, use the sealing material to seal the vacuum impregnation device completely, turn on the vacuum pump to vacuum, observe the gauge value of the vacuum pump, and ensure that the pressure in the vacuum impregnation container is 15kPa, and the vacuum time is 15 minutes. Turn off the vacuum pump and let stand for 20min.

[0045] (3) Keep the internal pressure of the vacuum impregnation device at 15kPa, and use a pressure difference of 15kPa to press the organic soluti...

Embodiment 2

[0050] (1) Choose carbon fiber needle felt as reinforcement, fiber porosity 90%; choose tert-butanol as solvent, oxalic acid as curing agent, sodium hydroxide as catalyst, and silicone rubber as matrix. Prepare a 15wt% silicone rubber resin solution, add 2.5wt% curing agent and mix evenly, then add 1.5wt% catalyst to complete the organic solution preparation.

[0051] (2) After putting the carbon fiber needle felt into the vacuum impregnation device, use the sealing material to seal the vacuum impregnation device completely, turn on the vacuum pump to evacuate, observe the gauge value of the vacuum pump, and ensure that the pressure in the vacuum impregnation container is 15kPa, and the vacuum time is 15 minutes. Turn off the vacuum pump and let stand for 20min.

[0052] (3) Keep the internal pressure of the vacuum impregnation device at 10kPa, and use a pressure difference of 10kPa to press the organic solution into the carbon fiber needle felt. When the organic solution comp...

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Abstract

The invention relates to a fiber reinforced flexible aerogel composite material and a preparation method thereof, and belongs to the technical field of composite material preparation. According to thecomposite material, fiber-reinforced flexible aerogel which has the advantages of being high in strength, good in toughness, strong in shape retention ability and good in processing ability when being compared with existing resin-based composite materials is adopted, so that the problems that the traditional fiber-reinforced aerogel composite materials are limited in shaping size, poor in toughness and difficult to process are solved, and the application field of the fiber-reinforced aerogel is greatly expanded.

Description

technical field [0001] The invention relates to a fiber-reinforced flexible airgel composite material and a preparation method thereof, belonging to the technical field of composite material preparation. Background technique [0002] Due to its own characteristics such as extremely low density, unique pore structure and morphology, and large specific surface area, airgel materials have the characteristics of sound absorption, heat insulation, wave penetration, permeability and adsorption, and are widely used in aerospace. , petrochemical, smelting and metallurgy, environmental protection, medical medicine and other fields are widely used. [0003] The most notable disadvantages of traditional airgel are low strength and poor toughness. After fiber reinforcement, there are also problems of limited use in special-shaped structures and large-scale structures. Contents of the invention [0004] The technical problem of the present invention is: to overcome the deficiencies of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L85/02C08L83/04C08K7/06C08J9/28
CPCC08J9/0085C08J9/28C08J2201/0502C08J2383/04C08J2385/02C08K7/06C08L85/02C08L83/04
Inventor 董薇张鹏飞张璇陶积柏梁龙宫顼陈伟强刘佳
Owner BEIJING SATELLITE MFG FACTORY
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