| 用PAT研究多嵌段聚醚氨酯脲的微畴结构 |
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| 引用本文： | 尹传元,徐炜政,顾庆超. 用PAT研究多嵌段聚醚氨酯脲的微畴结构[J]. 核技术, 1990, 0(6) |
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| 作者姓名： | 尹传元 徐炜政 顾庆超 |
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| 作者单位： | 南京大学(尹传元，徐炜政)，南京大学(顾庆超) |
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| 摘 要： | 本文用正电子湮没、小角X射线散射和差示扫描量热等方法研究多嵌段聚醚氨酯脲的微畴结构。实验结果表明,硬段含量的增加引起微畴体积和自由体积减小,而软段分子量增加引起微畴体积和自由体积增大。
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| 关 键 词： | 正电子湮没 小角X射线散射 多嵌段聚醚氨酯脲 微畴 玻璃化转变温度 |
A study of domain structure in segmented polyether polyurethaneureas by PAT |
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| Yin Chuanyuan Xu Weizheng Gu Qingchao. A study of domain structure in segmented polyether polyurethaneureas by PAT[J]. Nuclear Techniques, 1990, 0(6) |
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| Authors: | Yin Chuanyuan Xu Weizheng Gu Qingchao |
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| Affiliation: | Nanjing University |
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| Abstract: | The domain structure of segmented polyether polyurethaneureas is investigated by means of positron annihilation technique, small angle X-ray scattering and differential scanning calcrimetry. The experimental results show that tne decrease of domain volume and free volume results from the increase of hard segment contents, and that the increaseof domain volume and free volume results from the increase of molecular weight of soft segments. |
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| Keywords: | Positron annihilation Small angle X-ray scattering Segmented polyether polyurethaneurea Domain structure Class transition temperature |
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