| 亲水链段链长对聚氨酯薄膜透气性能的影响 |
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| 引用本文： | 刘燕,石欢欢,范浩军,芦燕. 亲水链段链长对聚氨酯薄膜透气性能的影响[J]. 中国皮革, 2007, 0(13) |
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| 作者姓名： | 刘燕 石欢欢 范浩军 芦燕 |
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| 作者单位： | 四川大学皮革化学与工程教育部重点实验室 四川成都610065 |
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| 基金项目： | 教育部新世纪优秀人才资助项目(NCET-05-0782) |
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| 摘 要： | 利用不同分子链长的聚乙二醇PEG300(分子质量300,下同)、PEG400、PEG600、PEG1000和PEG1500,合成了一系列新型的聚氨酯。探讨了聚乙二醇(PEG)亲水链段的分子链长,对聚氨酯薄膜表面接触角、透气性、吸水率和力学性能的影响。结果表明:随着PEG分子链的增长,合成的聚氨酯薄膜的表面接触角、吸水率、透气性和断裂伸长率增加,但是抗张强度却有所降低。
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| 关 键 词： | 聚氨酯 透气性 亲水链段 分子链链长 聚乙二醇 |
Influence of Hydrophilic Segment Chain Length on Water-vapor Permeability of Polyurethane |
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| LIU Yan,SHI Huan-huan,FAN Hao-jun,LU Yan. Influence of Hydrophilic Segment Chain Length on Water-vapor Permeability of Polyurethane[J]. China Leather, 2007, 0(13) |
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| Authors: | LIU Yan SHI Huan-huan FAN Hao-jun LU Yan |
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| Abstract: | A series of novel polyethylene glycol-based polyurethanes were prepared by several polyethylene glycols with different molecular chain lengths. The influence of hydrophilic segment chain length of the polyethylene (PEG) on contact angle,water-vapor permeability,water-absorbing capacity and mechanical properties of polyurethane film was investigated. The results indicate that with the increase of the PEG chain,the contact angle,water-vapor permeability,water-absorbing capacity and the broken elongation of PU film enhance,while the tensile strength of PU film decreases. |
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| Keywords: | polyurethane water-vapor permeability hydrophilic segment chain length polyethylene glycol |
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