In this paper, research & development of PET engineering plastics about ALLOY have been reviewed. The research & pr0duce of PET/PBT. PET/PC. PET/Polyether-ester was introduced.
The finishes for POY mainly contained polyether and polyoxyethylene fatty acid ester, and the finishes for FDY mainly contained polyether, synthetic ester and alkylpolyoxyethylene ether.
POY油剂组成以聚醚、聚氧乙烯脂肪酸酯为主，FDY油剂组成以聚醚、合成酯、聚氧乙烯脂肪醇醚为主。
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The structural characteristics of the polymer feedstock, polyurethane and polyetherester, practicable for elastic fiber melt spinning were described.