| 不同软段聚氨酯的透气性研究 |
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| 引用本文： | 张中权,谢静薇,季广华,张胜.不同软段聚氨酯的透气性研究[J].应用化学,1988,0(5):82-85. |
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| 作者姓名： | 张中权 谢静薇 季广华 张胜 |
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| 作者单位： | 复旦大学材料科学系 上海 |
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| 摘 要： | 热塑性聚氨酯弹性体是一种包含有软、硕段的多嵌段聚合物,有关其结构与性质的研究已有很多报道1,2],但对它的透气性质研究尚少.McBride3]和 Knight4]等曾对不同硬段含量、不同扩链剂的聚氨酯透气性质作过研究.本工作着重研究不同软段结构和软段长度对聚氨酯透气性的影响,以及含混合软段的聚氨酯的透气性.
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| 关 键 词： | 聚氯酯薄膜 透气性 软段 |
| 收稿时间： | 1987-09-02 |
| 修稿时间： | 1988-02-08 |
STUDY ON GAS PERMEABILITY OF POLYURETHANE WITH DIFFERENT SOFT SEGMENTS |
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| Zhang Zhongquan Xie Jingwei Ji Guanghua Zhang Sheng.STUDY ON GAS PERMEABILITY OF POLYURETHANE WITH DIFFERENT SOFT SEGMENTS[J].Chinese Journal of Applied Chemistry,1988,0(5):82-85. |
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| Authors: | Zhang Zhongquan Xie Jingwei Ji Guanghua Zhang Sheng |
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| Institution: | Department of Material Science, Fudan University, Shanghai |
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| Abstract: | The permeability coefficient(P_)of polyurethane(PU)with polybutylene adipate(PBA) or polypropylene glycol(PPG)as soft segment has been investigated.Both the types and length of the soft segment have great effect upon the gas permeability.PU with PPG seg- ment shows higher gas permeability than that with PBA segment,Increasing the soft seg- ment length brings about an increase in gas permeability and a decrease in the apparent activation energy. The linear relationship between P_ and the composition of the mixed soft segments indicates that the permeability coefficients of PU with PBA and PPG as soft segment are additive. |
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| Keywords: | Polyurethane membrane Gas permeability Soft segment |
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