| 聚四氟乙烯对聚丙烯复合材料等通道转角挤压加工性的影响 |
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| 引用本文： | 李红,赵耀明,黄承亚.聚四氟乙烯对聚丙烯复合材料等通道转角挤压加工性的影响[J].润滑与密封,2005(6):42-44,73. |
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| 作者姓名： | 李红 赵耀明 黄承亚 |
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| 作者单位： | 1. 华南理工大学材料学院,广州,510641;广东工业大学轻化工学院,广州,510090
2. 华南理工大学材料学院,广州,510641 |
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| 基金项目： | 国家自然科学基金资助项目（50175026）. |
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| 摘 要： | 研究了聚四氟乙烯（PTFE）对聚丙烯（PP）共混物固态等通道转角挤压（ECAE）加工性及性能的影响.结果表明：在PP中加入少量（小于2%的质量分数）PTFE使PP共混物的摩擦因数从纯PP的0.32减小到0.28,ECAE加工挤出压力从纯PP的130 MPa降低到115 MPa;含有少量PTFE的PP共混物使ECAE加工挤出过程更容易,挤出更稳定,其挤出物呈现出较好的形变均匀性,因此,PTFE对PP共混物的固态ECAE加工具有较大的促进作用,少量PT-FE的加入对PP共混物的力学性能影响较小.
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| 关 键 词： | 聚丙烯 等通道转角挤出 聚四氟乙烯 挤压加工性 |
| 文章编号： | 0254-0150（2005）6-042-3 |
| 收稿时间： | 2004-11-27 |
| 修稿时间： | 2004-11-27 |
The Effect of PTFE on Processability of PP/PTFE Composites by Equal Channel Angular Extrusion |
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| Li Hong,Zhao Yaoming,Huang Chengya.The Effect of PTFE on Processability of PP/PTFE Composites by Equal Channel Angular Extrusion[J].Lubrication Engineering,2005(6):42-44,73. |
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| Authors: | Li Hong Zhao Yaoming Huang Chengya |
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| Affiliation: | 1. College of Materials Science and Engineering, South China University of Technology, Guangzhou 510641, China; 2. Faculty of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510090, China |
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| Abstract: | The effect of polytetrafluoroethylene(PTFE) on processability and properties of polypropylene(PP)/PTFE composites by equal channel angular extrusion(ECAE) was researched.The results indicate the friction coefficient of PP/PTFE blends containing few content of PTFE(<2%) decreases from 0.32(PP) to 0.28 and the ECAE extrusion pressure decreases from 130 MPa(PP) to 115 MPa.The ECAE processing of PP/PTFE blends containing few content of PTFE is easer and more stable,causing more uniform deformation.Consequently,the ECAE processability of PP blend is improved and the mechanical properties of PP blend have a little change when a few PTFE as additive. |
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| Keywords: | polypropylene equal channel angular extrusion polytetrafluoroethylene |
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