| Preparation of High Shrinkage Polypropylene |
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| 引用本文： | 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) |
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| 作者姓名： | 吕文军 王华平 李建梅 张玉梅 |
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| 作者单位： | Lu Wenjun，Wang Huaping，Li Jianmei，Zhang YumeiChemical Fiber Engineering Research Center，Dong Hua University，Shanghai，200051 |
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| 摘 要： | 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 lOO℃. 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.
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Preparation of High Shrinkage Polypropylene |
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| Lu Wenjun,Wang Huaping,Li Jianmei,Zhang YumeiChemical Fiber Engineering Research Center,Dong Hua University,Shanghai. Preparation of High Shrinkage Polypropylene[J]. Journal of Donghua University, 2001, 18(4) |
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| Authors: | Lu Wenjun Wang Huaping Li Jianmei Zhang YumeiChemical Fiber Engineering Research Center Dong Hua University Shanghai |
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| Affiliation: | Chemical Fiber Engineering Research Center, Dong Hua University, Shanghai, 200051 |
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| 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. |
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| Keywords: | polypropylene preparation chip |
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