Anti-freezing type low temperature heat insulation material

Abstract

The invention provides a frost-resistant low-temperature thermal insulation material, which comprises the following raw materials in parts by weight: 60-90 parts of natural rubber, 20-30 parts of butadiene rubber, 5-10 parts of polyisobutylene rubber, and 30-70 parts of polyurethane rubber , 10-30 parts of propylene oxide rubber, 20-35 parts of copolymerized chlorohydrin rubber, 15-30 parts of ethylene-vinyl acetate rubber, 25-40 parts of acrylate rubber, 1-3 parts of rosin resin, 6-6 parts of petroleum resin 10 parts, 35-45 parts of titanium silicate, 8-13 parts of aluminum oxide, 28-33 parts of aluminum dioxide, 3-5 parts of aromatic oil, 1-3 parts of palmitic acid amide, 1-3 parts of methyl propionate 10-30 parts of kaolin, 3-5 parts of aromatic oil, 1-3 parts of microcrystalline cellulose, 2-6 parts of microcrystalline paraffin, 1-2 parts of boron carbide, 3-8 parts of magnesium stearate, bismuth oxide 2-3 parts, 5-15 parts of zirconia fiber, 5-15 parts of glass wool fiber, 3-5 parts of asbestos powder fiber, 5-10 parts of hollow ball, 3-7 parts of expanded perlite and 5-parts of diatomaceous earth 8 servings. The invention still has excellent thermal insulation performance and mechanical performance in a low-temperature environment of -160°C, and has extremely strong cold resistance and frost resistance.

Description

technical field [0001] The invention relates to the technical field of thermal insulation materials, in particular to a frost-resistant low-temperature thermal insulation material. Background technique [0002] Low-temperature insulation materials are widely used in low-temperature environments such as refrigerators, containers, freezers, and pipelines. , high specific strength and other characteristics, it has become one of the main raw materials for making low-temperature insulation materials. However, polyurethane materials need to use freon in the reaction, which may cause damage to the atmospheric ozone layer and fail to meet the requirements of international environmental protection organizations; at the same time, polyurethane plastics have poor dimensional stability at low temperatures, poor resilience, poor resistance to compression set, and easy deformation. Cracking, low compressive strength at low temperature, poor frost resistance, cannot meet the needs of use....

AI Technical Summary

Problems solved by technology

However, polyurethane materials need to use freon in the reaction, which may cause damage to the atmospheric ozone layer and fail to meet the requirements of international environmental protection organizations; at the same time, polyurethane plastics have poor dimensional stability at low temperatures, poor resilience, poor resistance to compression set, and easy deformation. Cracking, low compressive strength at low temperature, poor frost resistance, can not meet the needs of use