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Low heat conductance silicon rubber foam material and manufacture method thereof

A foam material, low thermal conductivity technology, applied in the field of material technology, can solve the problems of large foam compression deformation, poor compression resistance, poor product dimensional stability, etc.

Active Publication Date: 2013-06-05
AEROSPACE INST OF ADVANCED MATERIALS & PROCESSING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The silicone rubber foam prepared by the above method has poor compression resistance and poor dimensional stability. When in use, the compression deformation of the foam is large, which has a great influence on the pore structure inside the foam, which is not conducive to the heat insulation of the foam. insulation
At the same time, the above methods are difficult to form thermal insulation components with complex structures and high dimensional accuracy

Method used

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  • Low heat conductance silicon rubber foam material and manufacture method thereof
  • Low heat conductance silicon rubber foam material and manufacture method thereof
  • Low heat conductance silicon rubber foam material and manufacture method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Add 100g of cyclohexane as a diluent and 0.2g of silane coupling agent γ-aminopropyltriethoxysilane KH550 as a modifier into the container, and mix well. Then add 100 g of room temperature vulcanizing two-component silicone rubber adhesive (brand: KH-CL-RTV) into the container and mix well. Finally, 100 g of glass hollow microspheres with a diameter of 2 μm were added and stirred until all the glass hollow microspheres were covered by the silicone rubber adhesive.

[0053] Spread the mixed material into the mold cavity according to the shape of the product, press molding by molding, and cure for 48 hours at room temperature. The density of the fully cured silicone rubber foam matrix is ​​0.1g / cm 3 .

[0054] Add tetraethyl orthosilicate as reaction raw material, ethanol as alcohol solvent, deionized water and ammonia water, respectively: 2080g, 7300g, 540g, 14g, and mix uniformly to form a sol.

[0055] The silicon rubber foam matrix is ​​put into a vacuum impregnati...

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Abstract

The invention provides a low heat conductance silicon rubber foam material which is composed of a silicon rubber foam base body and a gas gel, wherein the silicon rubber foam base body is made of a silicon rubber tackiness agent and cenospheres. Low heat conductance silicon rubber foam has the advantages of being wide in applicable temperature, even in structure, large in nanometer aperture, low in heat conductivity and the like, and is suitable for requirements for heat preservation materials of civilian fields, space flight and aviation fields and the like. Meanwhile, a manufacture method is simple, technology is stable, effective control of a product structure can be performed as required, and the low heat conductance silicon rubber foam material and the manufacture method of the low heat conductance silicon rubber foam material are suitable for mass production.

Description

technical field [0001] The invention belongs to the technical field of material technology, and relates to a silicone rubber foam material with low thermal conductivity and a preparation method thereof. Background technique [0002] With the increasing awareness of energy saving and environmental protection, and the continuous expansion of human activities, heat insulation technology has attracted more and more attention, and has been widely used in industry, construction, aviation, aerospace and other fields. At present, there are many kinds of materials used for thermal insulation, including: ceramic fiber cotton board, glass fiber cotton board, rock wool board, polystyrene foam plastic board, foamed cement, new expanded perlite insulation system and polystyrene particles Insulation slurry, etc. With the further development of technology, thermal insulation materials and technologies are gradually developing in the direction of high efficiency and environmental protection...

Claims

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Application Information

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IPC IPC(8): C04B26/32C08L83/04C08K13/04C08K7/26C08K7/24C08K7/28C08K3/36
Inventor 霍鹏飞詹万初赵小玲邹军锋张昊简文政赵宇宋寒
Owner AEROSPACE INST OF ADVANCED MATERIALS & PROCESSING TECH
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