High-elastic barrier foam and preparation method thereof

Abstract

The invention relates to a high-elastic barrier foam and a preparation method thereof. The high-elastic barrier foam comprises a base layer, a barrier layer and a reinforcing layer which are thermallyfused into a whole in sequence, wherein the base layer is prepared from, by weight, 85 to 95 parts of polyether polyol, 20 to 35 parts of diphenylmethane diisocyanate, 1 to 2 parts of a foaming agent, 0.2 to 0.7 part of a catalyst, 3 to 5 parts of a flame retardant, 3 to 5 parts of a waterproof agent and 1 to 6 parts of silicone oil, and the hydroxyl value of the polyether polyol is 75 to 135; the barrier layer is prepared from, by weight, 30 to 45 parts of EVA, 4 to 6 parts of talcum powder, 6 to 8 parts of lime powder, 10 to 20 parts of triethyl phosphate, 32 to 42 parts of epoxy modified organosilicone resin powder, 10 to 12 parts of a styrene-acrylic emulsion and 0.3 to 1 part of a sodium polycarboxylate dispersing agent; and the reinforcing layer comprises, by weight, 90 to 95 partsof polyurethane and 5 to 10 parts of magnesium hydroxide. The tensile strength, the elongation at break, the tearing strength and other properties of the foam are remarkably improved, and meanwhile, the foam has a certain barrier effect, so that the application range of the foam is expanded, and the product performance is improved.

Description

technical field [0001] The invention relates to the technical field of artificial synthetic materials, in particular to a high-elastic barrier foam and a preparation method thereof. Background technique [0002] With the rapid development of economic construction, people's development of new materials is also changing with each passing day. Foam materials are widely used in household items and construction projects. For ordinary foam, due to the poor tensile strength, elongation at break, and tear strength of the material, it cannot meet the use requirements in many applications that require high strength. At the same time, when used in electronic products or buildings, foam cannot effectively block water, fire or radiation, which limits the scope of application of the product. Contents of the invention [0003] In view of the defects in the prior art, the purpose of the present invention is to provide a high-elastic barrier foam and its preparation method, so as to impr...

AI Technical Summary

Problems solved by technology

For ordinary foam, due to the poor tensile strength, elongation at break, and tear strength of the material, it cannot meet the use requirements in many applications that require high strength.

At the same time, when used in electronic products or buildings, foam cannot effectively block water, fire or radiation, which limits the scope of application of the product

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