| 主链型液晶高分子改善聚丙烯熔体高速挤出的流变行为 |
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| 引用本文： | 刘祥贵,李金亮,吴其晔.主链型液晶高分子改善聚丙烯熔体高速挤出的流变行为[J].合成树脂及塑料,2011,28(3):45-48,51. |
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| 作者姓名： | 刘祥贵 李金亮 吴其晔 |
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| 作者单位： | 青岛科技大学,教育部橡塑工程重点实验室,山东,青岛,266042 |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 采用恒速型双毛细管流变仪研究了主链型热致液晶对无规共聚聚丙烯(PPR)熔体高速挤出流变性能的影响.PPR熔体螺纹状畸变是由口模入口区的应力集中效应和横向环流造成的;利用原位成纤法制备PPR/热致液晶聚合物(TLCP)试样,TLCP在拉伸场中明显取向,随拉伸速率增大,取向程度先增大后减小;取向的TLCP明显减弱熔体挤出物...
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| 关 键 词： | 无规共聚聚丙烯 螺纹畸变 高速挤出 主链热致液晶聚合物 |
Rheological behavior of polypropylene melt modified with main chain thermotropic liquid crystalline polymer through high speed extrusion |
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| Liu Xianggui,Li Jinliang,Wu Qiye.Rheological behavior of polypropylene melt modified with main chain thermotropic liquid crystalline polymer through high speed extrusion[J].China Synthetic Resin and Plastics,2011,28(3):45-48,51. |
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| Authors: | Liu Xianggui Li Jinliang Wu Qiye |
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| Affiliation: | Liu Xianggui,Li Jinliang,Wu Qiye (Key Laboratory of Rubber-Plastics,Ministry of Education,Qingdao University of Science and Technology,Qingdao 266042,China) |
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| Abstract: | The authors studied the influence of main chain thermotropic liquid crystalline poIymer(TLCP) on rheological properties of polypropylene random copolymer(PPR) through high speed extrusion by a constant speed double-capillary rheometer.The helix distortion of the PPR melt was caused by stress concentration and transverse circulation flow at the die entrance.The samples of PPR4220/TLCP were prepared with in-situ fibrillation.The TLCP phase oriented obviously in the tension field and the degree of orientation ... |
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| Keywords: | polypropylene random copolymer helix distortion high speed extrusion main chain thermotropic liquid crystalline polymer |
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