采用具有较高特性黏度、含成核剂的聚对苯二甲酸丙二醇酯（PTT）。
Synthesize polytrimethylene terephthalate with higher characteristic viscosity and nucleating agent.
采用直接酯化缩聚路线合成了具有较高特性黏度、含成核剂的聚对苯二甲酸丙二醇酯（ PTT） 材料。
By using the direct esterification polycondensation method synthesized polytrimethylene terephthalate with higher characteristic viscosity and nucleating agent.
从加工和使用过程中纤维聚集态中分子链构象的有序化转变，研究聚对苯二甲酸丙二醇酯（ PTT）纤维的弹性回复机理。
The elasticity recovering mechanism of PTT fibers was studied through the ordering transformation of molecular chain conformation in aggregation of fibers in the course of processing and using.
研究了聚对苯二甲酸丙二醇酯（PTT） ，PET ，CDP在不同温度和时间下的特性粘数和端羧基含量的变化。
The changes of intrinsic viscosity and end carboxyl group content with temperature and time were studied for poly(trimethylene terephthalate)(PTT), PET and CDP.
以1,3 -丙二醇为单体生产的聚对苯二甲酸二醇酯是一种新型聚酯材料，具有优良的特性，是目前合成纤维新品种开发热点。
Polyterephthalate produced based on monomeric 1, 3-propanediol is a new polyester material with excellent performance, it is becoming a hot point to develop new synthetic fiber currently.
以1,3 -丙二醇为单体生产的聚对苯二甲酸二醇酯是一种新型聚酯材料，具有优良的特性，是目前合成纤维新品种开发热点。
Polyterephthalate produced based on monomeric 1, 3-propanediol is a new polyester material with excellent performance, it is becoming a hot point to develop new synthetic fiber currently.
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