LDPE/EVA/SEBS (low-density polyethylene/ethylene-vinyl acetate/styrene-ethylene-butadiene-styrene) composite foamed material and preparation method thereof

Abstract

The invention discloses an LDPE / EVA / SEBS (low-density polyethylene / ethylene-vinyl acetate / styrene-ethylene-butadiene-styrene) composite foamed material which is prepared from the following raw materials in parts by weight: 80-100 parts of LDPE, 30-40 parts of EVA, 20-30 parts of SEBS, 10-20 parts of talcum powder, 10-15 parts of nano attapulgite, 2-3 parts of bis(P,P-bis-ethylhexyl diphosphato)ethanediolato titanate, 1-2 parts of aminopropyltriethoxysilane, 5-10 parts of antimony trioxide, 5-8 parts of azobisformamide, 5-8 parts of triacetin, 1-1.5 parts of dicumyl peroxide, 2-3 parts of zinc oxide, 1-2 parts of calcium stearate, 1-2 parts of tribasic lead sulfate, 2-3 parts of tristearin, 3-5 parts of modified plant ash, 1-2 parts of ultraviolet absorbent UV-0 and 2-3 parts of antioxidant DLTP. The LDPE foamed material disclosed by the invention has the advantages of light weight, softness, high strength, favorable resilience, ideal foaming effect, uniform, fine and compact pores, favorable flame retardancy, resistance to chemical attack, aging resistance and high durability.

Description

technical field [0001] The invention belongs to the field of polymer material processing, and in particular relates to an LDPE / EVA / SEBS composite foaming material and a preparation method thereof. Background technique [0002] Low-density polyethylene foam has excellent physical, chemical and mechanical properties. It is tough, flexible, wear-resistant, has excellent electrical insulation, heat insulation and chemical resistance, and is widely used in many fields such as packaging, chemical industry, and construction. However, at present, low-density polyethylene foaming materials still have shortcomings such as low strength, poor resilience, and uneven cells. Therefore, one of the development directions of low-density polyethylene foaming materials is to develop soft, high-flexibility, high-strength materials. , a closed-cell foam grade with uniform cells, small and dense, and at the same time, various fields also put forward corresponding requirements for the flame retar...

AI Technical Summary

Problems solved by technology

However, at present, low-density polyethylene foaming materials still have shortcomings such as low strength, poor resilience, and uneven cells. Therefore, one of the development directions of low-density polyethylene foaming materials is to develop soft, high-flexibility, high-strength materials. , uniform cells, small and dense closed-cell foam grade, at the same time, various fields also put forward corresponding requirements for the flame retardancy of plastic materials