In this paper, A 300L universal polymerization reactor was used, terephthalic acid and isophthalic acid was used as raw material, according to three proportions the raw material was test esterification and polycondensation with ethylene glycol, three kinds of poly mixed benzene two formic acid glycol ester was prepared. The mix acid physicochemical properties of copolyesters was test, to use mixed acid copolyesters as raw materials, respectively, foaming experiment using small reactor and Mucell foaming apparatus. The test and experiment results show that, when the isophthalic acid between two formic acid mixing proportion accounted for 28%, poly benzene mixed two formic acid glycol ester has a small amount of crystallization, and has better performance of microcellular foam processing.
【 在 peiyangium 的大作中提到: 】
: 用被动语态。
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