| 稀土β成核剂含量对PPR性能与结晶行为的影响 |
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| 引用本文： | 丁会利,肖山,王虎,陈旭,郑德.稀土β成核剂含量对PPR性能与结晶行为的影响[J].高分子材料科学与工程,2011(3):51-54. |
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| 作者姓名： | 丁会利 肖山 王虎 陈旭 郑德 |
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| 作者单位： | 河北工业大学化工学院高分子科学研究所;广东炜林纳功能材料有限公司 |
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| 基金项目： | 河北省自然科学基金资助项目(E2010000122) |
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| 摘 要： | 选用新型稀土β成核剂(WBGⅡ)对无规共聚聚丙烯(PPR)进行改性。借助广角X射线衍射(WAXD)、差示扫描量热仪(DSC)及偏光显微镜(POM)研究了稀土β成核剂诱导无规共聚聚丙烯的结晶行为及晶体形态;并研究了WBGⅡ对PPR力学性能和热变形温度(HDT)的影响。结果表明,加入少量WBGⅡ后,PPR的晶型和结晶形态均发生变化;非等温结晶过程的结晶温度(Tc)从95.8℃提高到102.1℃;PPR的冲击强度提高24%,拉伸和弯曲性能却略有下降;热变形温度提高20℃。
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| 关 键 词： | 无规共聚聚丙烯 成核剂 晶型 结晶行为 力学性能 |
Crystallization Behavior and Morphology of PPR Induced by Rare Earth β-Form Nucleating Agent |
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| Huili Ding,Shan Xiao,Hu Wang,Xu Chen,De Zheng.Crystallization Behavior and Morphology of PPR Induced by Rare Earth β-Form Nucleating Agent[J].Polymer Materials Science & Engineering,2011(3):51-54. |
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| Authors: | Huili Ding Shan Xiao Hu Wang Xu Chen De Zheng |
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| Affiliation: | 1.Institute of Polymer Science and Engineering,Hebei University of Technology, Tianjin 300130,China;2.Guangdong Winner Functional Materials Co.Ltd.,Foshan 528521, China) |
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| Abstract: | In the study,a new rare-earth β-nucleating agent(WBGⅡ) was used to modify ethylene-propylene random copolymer(PPR).By means of wide-angle X-ray diffraction(WAXD),differential scanning calorimeter(DSC) and polarizing optical microscope(POM),the crystallization behavior and morphology of PPR induced by WBGⅡwere studied.The effect of β nucleating agent on mechanical property and heat distortion temperature(HDT) was researched also.The results show that βform nucleating agent WBGⅡ can change the crystal structure of PPR and rise the maximums of exothermic peaks(Tc) of non-isothermal crystallization from 95.8 ℃ to 102.1 ℃.The tensile and bend capability decrease a little and the impact strength increases by 24%.The HDT is risen by 20 ℃. |
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| Keywords: | propylene-ethylene random copolymer nucleating agents β form crystalline crystallization behavior mechanical property |
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