Preparation of cryogenic rubber-plastic thermal insulation material

Abstract

The invention relates to the technical field of cryogenic rubber and plastic thermal insulation materials, in particular to preparation of a cryogenic rubber and plastic thermal insulation material. The thermal insulation material is prepared from the following raw materials in parts by weight: 4-8 parts of ethylene vinyl acetate copolymer (EVA), 8-12 parts of a foaming agent, 60-75 parts of a smoke suppressor, 20-25 parts of a plasticizer, 5-8 parts of carbon black, 1-2.5 parts of zinc oxide, 0.5-1.5 parts of stearic acid, 1-2 parts of an anti-aging agent, 4-6 parts of an accelerant, 2-10 parts of ointment, 10-15 parts of argil, 2-5 parts of silicon dioxide and 1-3 parts of glycol. According to the invention, the ENB rubber improves the tensile strength and reduces the deformation degreeof the product; and the factice, the argil and the ethylene glycol further improve the freezing resistance and the stability of the product under the low-temperature condition, and the heat preservation performance of the material is greatly improved.

Description

technical field [0001] The invention relates to the technical field of cryogenic rubber and plastic thermal insulation materials, in particular to the preparation of a cryogenic rubber and plastic thermal insulation material. Background technique [0002] At present, the insulation materials in the market, such as polyurethane, foam glass, polyisocyanurate, etc., are mostly hard materials, and there are problems such as cutting, seam treatment, thermal expansion and contraction, and some flexible materials such as airgel Felt, glass wool felt, aluminum silicate felt, etc. are fiber open-pore materials. Due to the existence of low-temperature condensed water, the water absorption rate of these materials is relatively high after long-term use. Once water is absorbed, the heat preservation and cold preservation effect will be greatly reduced. The industry needs a closed-cell flexible material with excellent thermal insulation effect. [0003] Therefore, we propose a preparatio...

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Problems solved by technology

[0002] At present, the insulation materials in the market, such as polyurethane, foam glass, polyisocyanurate, etc., are mostly hard materials, and there are problems such as cutting, seam treatment, thermal expansion and contraction, and some flexible materials such as airgel Felt, glass wool felt, aluminum silicate felt, etc. are fiber open-pore materials. Due to the existence of low-temperature condensed water, the water absorption rate of these materials is relatively high after long-term use. Once water is absorbed, the heat preservation and cold preservation effect will be greatly reduced. The industry needs a closed-cell flexible material with excellent thermal insulation effect