东华大学学报（英文版）2001，Vol.18Issue(4)：54-56,3.
Preparation of High Shrinkage Polypropylene
Preparation of High Shrinkage Polypropylene
吕文军 1王华平 1李建梅 1张玉梅1
作者信息
- 1. Chemical Fiber Engineering Research Center, Dong Hua University, Shanghai, 200051
- 折叠
摘要
Abstract
The common PP chips have been used to prepare high shrinkage PP fibers with shrinkage in boiling water higher than 50%. Meanwhile, the process conditions on fiber structure and properties have been discussed in detail. With the increase of drawing temperature, the shrinkage in boiling water of the fiber increases at first,and then decreases in the temperature range from 70℃ to 100℃. The better drawing temperature is from 75℃ to 85℃ according to the melt index of the PP material. The shrinkage in boiling water of PP fiber increases with the increase of pump delivery. The orientation factor and crystallinity increase with the increase of drawing temperature. With an increase in drawing temperature,unit-cell numbers and monomer unit numbers in every crystal nucleus tend to increase, but unit volume crystal nucleus tend to reduce.关键词
polypropylene/preparation/chipKey words
polypropylene/preparation/chip分类
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吕文军,王华平,李建梅,张玉梅..Preparation of High Shrinkage Polypropylene[J].东华大学学报（英文版）,2001,18(4):54-56,3.
