| DYNAMIC RHEOLOGICAL BEHAVIOR OF POLYPROPYLENE FILLED WITH ULTRA-FINE POWDERED RUBBER PARTICLES |
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| 作者姓名： | QiangZheng Yan-xiaCao MiaoDu |
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| 作者单位： | DepartmentofPolymerScienceandEngineering,ZhejiangUniversity,Hangzhou310027,China |
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| 基金项目： | 国家自然科学基金
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国家重点基础研究发展计划(973计划) |
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| 摘 要： | Dynamic rheological characteristics of polypropylene (PP) filled with ultra-fine full-vulcanized powdered rubber (UFPR) composed of styrene-butadiene copolymer were studied through dynamic rheological measurements on an Advanced Rheometric Expansion System (ARES). A specific viscoelastic phenomenon, i.e. “the second plateau“, appeared at low frequencies, and exhibits a certain dependence on the amount of rubber particles and the dispersion state in the matrix. This phenomenon is attributed to the formation of aggregation structure of rubber particles. The analyses of Cole-Cole diagrams of the dynamic viscoelastic functions suggest that the heterogeneity of the composites is enhanced on increasing both particle content and temperature.
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| 关 键 词： | 聚丙烯 填充聚合物 流变动力学 超细粉末橡胶 |
| 收稿时间： | 2003-04-04 |
| 修稿时间： | 2003-06-11 |
DYNAMIC RHEOLOGICAL BEHAVIOR OF POLYPROPYLENE FILLED WITH ULTRA-FINE POWDERED RUBBER PARTICLES* |
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| QiangZheng Yan-xiaCao MiaoDu.DYNAMIC RHEOLOGICAL BEHAVIOR OF POLYPROPYLENE FILLED WITH ULTRA-FINE POWDERED RUBBER PARTICLES[J].Chinese Journal of Polymer Science,2004,0(4):363-367. |
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| Authors: | Qiang Zheng Yan-xia Cao Miao Du |
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| Institution: | Department of Polymer Science and Engineering; Zhejiang University; Hangzhou 310027; China |
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| Abstract: | Dynamic rheological characteristics of polypropylene (PP) filled with ultra-fine full-vulcanized powdered rubber (UFPR) composed of styrene-butadiene copolymer were studied through dynamic rheological measurements on an Advanced Rheometric Expansion System (ARES). A specific viscoelastic phenomenon, i.e. "the second plateau", appeared at low frequencies, and exhibits a certain dependence on the amount of rubber particles and the dispersion state in the matrix. This phenomenon is attributed to the formation of aggregation structure of rubber particles. The analyses of Cole-Cole diagrams of the dynamic viscoelastic functions suggest that the heterogeneity of the composites is enhanced on increasing both particle content and temperature. |
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| Keywords: | Polypropylene Ultra-fine powdered rubber Filled polymers Dynamic rheological behavior Aggregation of fillers PARTICLES POWDERED RUBBER POLYPROPYLENE RHEOLOGICAL BEHAVIOR analyses functions heterogeneity composites increasing particles content temperature formation aggregation structure dependence rubber dispersion state matrix |
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