Anti-radiation high temperature resistant heat insulating composite bushing and preparation method

Abstract

The invention provides an anti-radiation high temperature resistant heat insulating composite bushing and a preparation method. The anti-radiation high temperature resistant heat insulating composite bushing comprises a lining bushing, a high temperature resistant heat insulating coating layer coated on the lining bushing, and a thin type aluminum film winding band winded on the high temperature resistant heat insulating coating layer. The thickness of the high temperature resistant heat insulating coating layer is 1-2mm, the high temperature resistant heat insulating coating layer is made from raw materials in component parts as follows, the parts are weight parts, wherein: adipic acid: 25-35 parts; trimethylolpropane: 16-20 parts; dechlorane plus: 20-30 parts; diantimony trioxide: 3-10 parts; ammonium borate: 5-12 parts; starch: 8-15 parts; zinc oxide: 5-12 parts; ammonium polyphosphate: 10-20 parts; and cyclohexanone or xylene 100-200 parts. The thin type aluminum film winding band is formed via cutting after synthesis of alkali-free glass fiber cloth and an aluminum plated film via a high temperature resistant flame retardant adhesive, and is winded on the high temperature resistant heat insulating coating layer in a mode of 1 / 2 hasp.

Description

technical field [0001] The invention relates to a radiation-proof, high-temperature-resistant and heat-insulating composite casing and a preparation method thereof, in particular to a radiation-proof, high-temperature-resistant and heat-insulating composite sleeve used to protect cables at engine parts of aerospace, rockets and missiles from being damaged by high heat flux radiation and burning. Casing and preparation method. Background technique [0002] At present, in the existing technology, the high-temperature heat-resistant heat-insulating sleeves used in the cables of rocket and missile engines mostly use alkali-free glass fiber sleeves as the inner liner sleeves, and then coat the surface of the inner liner sleeves with high-temperature heat-resistant heat insulation. Coating, after baking, weave a layer of aramid wire braided sleeve on the high temperature resistant heat insulation coating. Although this kind of high-temperature-resistant and heat-insulating casing...

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Problems solved by technology

Since the advantage of the high-temperature-resistant heat-insulating coating itself is to deal with flame ablation, when encountering strong heat flow radiation (the heat flow temperature is characterized by rising from low to low), the high-temperature-resistant heat-insulating coating of the casing can only be passively It absorbs a large amount of heat, because the surface of the coating does not have the function of reflecting heat flow. When the temperature of the heat flow becomes higher and higher, the organic substances contained in the coating will be ignited and ignited while the coating is carbonized, which affects the flame retardancy. Heat insulation effect and hidden danger of cables being burnt out

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