液状1,2-ポリブタジエン添加によるアタクチックポリプロピレン架橋物及び架橋発ぽう物の製造と物性

概要

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The formulation and conditions to prepare the crosslinked solid by adding liquid 1, 2-PB (polybutadiene) into APP (atactic polypropylene) were studied. 2-10 parts of 1, 2-PB for 100 parts of APP is added, and then the above reactant is crosslinked with DCP (dicumyl peroxide). The crosslinked solids thus obtained had the excellent mechanical properties.Also, by adding foaming agent together with 1, 2-PB and DCP into APP and crosslinking under pressure, crosslinked APP foam was prepared. Further, this formulation and crosslinking conditions were studied in detail. The resulted foam showed the outstandingly excellent mechanical properties comparable to EVA (ethylene vinyl acetate copolymer) crosslinked foam, and it was superior to EVA foam in properties at low and high temperature.