| 流延聚丙烯的结晶结构 |
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| 引用本文： | 尹波,杨鸣波. 流延聚丙烯的结晶结构[J]. 化工学报, 2006, 57(4): 1014-1018 |
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| 作者姓名： | 尹波 杨鸣波 |
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| 作者单位： | 四川大学高分子科学与工程学院，四川 成都 610065 |
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| 摘 要： | 通过DSC和WAXD讨论了结晶温度、拉伸和冷却方式对流延聚丙烯结晶结构特别是γ晶形成的影响.结果表明:拉伸作用提高了试样的结晶度,但对γ晶的形成几乎没有影响;快速冷却不利于γ晶的生成;在95℃和115℃等温结晶的样品中发现了γ晶,且在115℃下生成γ晶更明显.
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| 关 键 词： | 流延聚丙烯 结晶结构 γ晶 |
| 文章编号： | 0438-1157（2006）04-1014-05 |
| 收稿时间： | 2005-07-04 |
| 修稿时间： | 2005-07-042005-11-25 |
Crystal structure of casting polypropylene |
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| YIN Bo,YANG Mingbo. Crystal structure of casting polypropylene[J]. Journal of Chemical Industry and Engineering(China), 2006, 57(4): 1014-1018 |
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| Authors: | YIN Bo YANG Mingbo |
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| Affiliation: | School of Polymer Science and Engineering, Sichuan Univiversity , Chengdu 610065, Sichuan , China |
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| Abstract: | The crystal structures of several casting polypropylenes were characterized with differential scanning calorimetry (DSC) and wide angle X-ray diffraction (WAXD). The effects of temperature, draw ratio and cooling rate on crystal structure were discussed. The main conclusions were listed as follows: drawing could increase the crystallinity of casting polypropylene, but could not induce the formation of the γ-form.Temperature and cooling rate could affect the formation of the γ-form.The slower the cooling rate, the more easily the γ-form developed; γ-form was found in the samples crystallized at 95 and 115℃ and the γ-form content of the sample at 115℃ was higher than that at 95℃. |
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