| 软段PEG含量对水性聚氨酯涂膜结晶性的影响 |
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| 引用本文： | 周善康,许一婷,庄志强,戴李宗.软段PEG含量对水性聚氨酯涂膜结晶性的影响[J].厦门大学学报(自然科学版),2000,39(3):348-352. |
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| 作者姓名： | 周善康 许一婷 庄志强 戴李宗 |
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| 作者单位： | 厦门大学材料科学系,福建,厦门,361005 |
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| 摘 要： | 合成了系列水性聚氨酯分散液，就分子链软段中亲水性链段聚乙二醇（ＰＥＧ）含量对聚氨酯涂膜结晶性的影响进行了探讨。结果表明，水性聚氨酯膜中存在三种结晶微区，每一结晶微区熔融温度均随ＰＥＧ含量的变化而变化，且软段结晶形态与ＰＥＧ，聚己二酸丁二醇酯二醇（ＰＴＡｄ）结晶形态相同，晶胞参数随ＰＥＧ含量的增加而增大，但较ＰＥＧ和ＰＴＡｄ为小。
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| 关 键 词： | 水性聚氨酯 结晶性 结晶微区 涂膜 软段PEG |
| 修稿时间： | 1999-10-12 |
Effect of PEG Content in Soft-segment on the Crystallization of Cast Film of Water-borne Polyurethane |
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| ZHOU Shan-kang,XU Yi-ting,ZHUANG Zhi-qiang,DAI Li-zong.Effect of PEG Content in Soft-segment on the Crystallization of Cast Film of Water-borne Polyurethane[J].Journal of Xiamen University(Natural Science),2000,39(3):348-352. |
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| Authors: | ZHOU Shan-kang XU Yi-ting ZHUANG Zhi-qiang DAI Li-zong |
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| Abstract: | A series of water- borne polyurethanes were synthesized,and the effect of PEG content in soft- segment on the crystallization of their cast films was studied.The results indicate that there are three kinds of crystalline domains in the cast film,each of their melting points varies with the PEG content,and the form of the soft- segment crystal is the same as the ones of PEG and PTAd.Moreover,their cell parameters increase with the PEG content and are smaller than those of PEG and PTAd. |
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| Keywords: | water- borne polyurethane crystallization crystalline domain cell parameter |
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