Preparation method of heat insulation pad and heat insulation pad prepared thereby

Abstract

A preparation method of a heat insulation pad relates to the field of composite material and comprises the following steps: a, blending a heat insulation adhesive; b, brushing with the heat insulation adhesive to prepare woolen fabrics; c, laying and folding the woolen fabrics; and d, carrying out compression molding. According to the heat insulation pad prepared by the method, ceramic fiber or glass fiber fabrics are used as carriers, each piece of carrier is brushed with the adhesive for multiple times to be used as the woolen fabric; the adhesive is formed by adding a nano silica aerosol powder with the mass 10-30% that of modified resin into the modified resin and then mixing evenly, and the control amount of the adhesive is 500-900 g / m<2>; the heat insulation pad is formed by laying and folding multiple layers of woolen fabrics and then carrying out compression molding. The produced heat insulation pad has a better heat insulation characteristic, and besides, also can provide good bending strength, tensile strength and compressive strength for a heat insulation system; the preparation method is simple to operate; and the heat insulation pad is good in performance and low in cost, fills a research and development blank in the domestic heat insulation field, and can be widely applied to the heat insulation system in high temperature environments.

Description

technical field [0001] The invention relates to the field of composite materials, in particular to a method for preparing a heat insulation pad and the heat insulation pad prepared by the method. Background technique [0002] As a protective device in high temperature environment, heat insulation pad has a very wide range of uses, such as in the aerospace field. When manufacturing a space shuttle, it must be considered that the space shuttle needs to withstand the extremely harsh environment during high-speed flight. At the same time, during the take-off process of the space shuttle entering the predetermined orbit and the recovery process of returning to the ground, due to the effect of air resistance, the surface of the space shuttle flying at high speed will generate frictional heat, which will increase the surface temperature of the aircraft. If there is no good heat insulation System, high temperature will be transmitted to the interior of the aircraft through the skin ...

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Problems solved by technology

[0003] In order to solve the technical problems of poor thermal insulation performance and poor mechanical properties in the prior art, the present invention provides a method for preparing a thermal insulation pad with low production cost, satisfactory mechanical properties, and can be processed into a curved surface and using the Insulation mat made by method

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