High-toughness and low-temperature thermal insulation material and preparation technology thereof

Abstract

The invention provides a high-toughness low-temperature thermal insulation material and a preparation process thereof. The thermal insulation material comprises the following raw materials in parts by weight: 50-60 parts of natural rubber, 20-30 parts of hydrogenated nitrile rubber, and 20-30 parts of styrene-butadiene rubber , 3‑5 parts of methyl vinyl silicone rubber, 5‑10 parts of polysiloxane modified EPDM rubber, 3‑5 parts of polypropylene, 1‑3 parts of ABS resin, 1‑3 parts of polystyrene, 1-3 parts of polyvinyl chloride, 1-2 parts of coupling agent, 10-20 parts of styrene-butadiene latex, 1-2 parts of crosslinking aid, 1-3 parts of natural derived wax, 0.5-1 part of phosphite antioxidant 0.1-0.2 parts of phenylenediamine antioxidant, 2-3 parts of nano-titanium dioxide, 4-5 parts of magnesium bicarbonate, 3 parts of tea polyphenols, 5-10 parts of chitin, 1-2 parts of asbestos powder, ammonium polyphosphate 4‑5 parts, 5‑10 parts of nano calcium carbonate, 0.3‑0.5 parts of sulfur, 1‑1.2 parts of zinc dimethyl dithiocarbamate, 5‑10 parts of high wear-resistant carbon black, 5‑15 parts of zirconia fiber , glass wool fiber 5-15 parts, hollow ball 5-10 parts, expanded perlite 3-7 parts. The invention has excellent cold resistance, thermal insulation performance, mechanical performance and high toughness.

Description

technical field [0001] The invention relates to the technical field of thermal insulation materials, in particular to a high-toughness low-temperature thermal insulation material and a preparation process thereof. 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, cannot meet the nee...

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, unable to meet the needs of use