Flexible ceramizable silicone rubber thermal insulation composite material and preparation method thereof

A ceramic silicone rubber and composite material technology, which is applied in chemical instruments and methods, rubber layered products, aerospace vehicle heat protection devices, etc., can solve the problem of poor resistance to high-speed particle airflow erosion, poor integrity, and peeling of thermal insulation materials To achieve the effect of improving the anti-high-speed air erosion performance, improving the structural integrity, and preventing large-scale shedding
CN111761895APending Publication Date: 2020-10-13WUHAN UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
WUHAN UNIV OF TECH
Publication Date
2020-10-13

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Abstract

The invention relates to a flexible ceramizable silicone rubber thermal insulation composite material and a preparation method thereof. The composite material is a silicone rubber / fiber cloth integralstructure, the silicone rubber is a support structure, and the fiber cloth penetrates through the silicone rubber; the composite material is obtained by stacking and vulcanizing mixed rubber sheets and fiber cloth at intervals, the mixed rubber sheets are obtained by mixing the silicone rubber, and the mixed rubber sheets are prepared from, by mass, 100 parts of the silicone rubber, 20-45 parts of fumed silica, 30-160 parts of ceramic powder, 0-40 parts of a fluxing agent, 6-20 parts of short fibers, 1-15 parts of a structure control agent and 1-4 parts of a vulcanizing agent. The ceramizablesilicone rubber composite material provided by the invention is good in flexibility, high in mechanical property, good in ablation resistance and resistant to high-speed airflow scouring, and can meet the requirements of the fields of aerospace and special fireproof engineering on fireproof, thermal-insulating and ablation-resistant thermal protection performance.
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Description

technical field

[0001] The invention belongs to the technical field of organic macromolecular compounds, and relates to a flexible and ceramizable silicone rubber heat-insulating composite material and a preparation method thereof. Background technique

[0002] The rapid development of aerospace vehicles has higher and higher requirements for thermal protection materials. Among the current thermal protection materials, polymer-based composite materials have more obvious advantages than ceramic-based thermal-protective materials and metal-based thermal-protective materials under certain special operating conditions. The ceramizable polymer composite materials gradually developed in the field of thermal protection combine the characteristics of low density, high specific strength and low thermal conductivity of polymers at room temperature and the high temperature advantages of ceramic materials, so that they can be used in different service conditions. Playing different role...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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