涤纶POY油剂单体的合成及性能研究

Synthesis and properties of finish monomer of polyester POY

以碳酸二乙酯为原料,与丙二醇聚醚反应,合成了低级聚碳酸酯,再用自制的不同脂肪醇聚氧乙烯醚封端,合成了改性聚碳酸酯;将改性聚碳酸酯与其他单体复配,配制成涤纶POY油剂,考察脂肪醇聚氧乙烯醚的起始剂、环氧乙烷(EO)与环氧丙烷(PO)加成数,碳酸二乙酯与丙二醇聚醚的摩尔比对POY油剂性能的影响。结果表明:使用辛醇为起始剂,与EO按摩尔比1:8缩合合成脂肪醇聚氧乙烯醚,1,2-丙二醇与PO按摩尔比1:8缩合合成丙二醇聚醚,碳酸二乙酯与丙二醇聚醚按摩尔比4:3缩合成低级聚碳酸酯,低级聚碳酸酯与脂肪醇聚氧乙烯醚按摩尔比1:1合成的改性聚碳酸酯作为单体复配的涤纶POY油剂,其润湿性能、热性能较好,表面张力较高。

Diethyl carbonate was used as raw material and reacted with propylene glycol polyether to synthesize low polycarbonate which was terminated with fatty alcohol polyoxyethylene ether to produce modified polycarbonate. Finishes for polyester POY was prepared by the complex formulation of modified polycarbonate and other monomers. The effects of the initiator for fatty alcohol polyoxyethylene ether, the adduct number of ethylene oxide（EO） and propylene oxide（PO） and the mole ratio of diethyl carbonate and propylene glycol polyether on the properties of POY finish were investigated. Octanol used as an initiator was reacted with EO at the mole ratio of 1 ： 8 to produce fatty alcohol polyoxyethylene ether via condensation. Propylene glycol polyether was prepared by condensing 1,2-propanediol and PO at the mole ratio of 1 ： 8. Low polycarbonate was prepared by condensing diethyl carbonate and propylene glycol polyether at the mole ratio of 4 ： 3 and mixed with fatty alcohol polyoxyethylene ether at the mole ratio of 1 ： 1 to synthesize the modified polycarbonate which was used as a monomer to produce finishes for polyester POY by complex formulation. The obtained finishes had favorable wettability, thermal property and surface tension.