中国塑料

中国塑料 ›› 2012, Vol. 26 ›› Issue (11): 50-55 .DOI: 10.19491/j.issn.1001-9278.2012.11.010

• 材料与性能 • 上一篇    下一篇

无机填料增强改性超高相对分子质量聚乙烯的研究

何振强 薛平 戚晓芸   

  1. 北京化工大学 北京化工大学 北京化工大学
  • 收稿日期:2012-05-15 修回日期:2012-08-05 出版日期:2012-11-26 发布日期:2012-11-26

Study on Ultrahigh Molecular Weight Polyethylene Composites Reinforced with Inorganic Fillers

xiaoyun qi   

  • Received:2012-05-15 Revised:2012-08-05 Online:2012-11-26 Published:2012-11-26

摘要： 采用超细白云母和针状硅灰石两种无机填料对超高相对分子质量聚乙烯(PEUHMW)进行填充改性，并用单螺杆挤出机进行成型，研究不同用量的无机填料对PEUHMW复合材料的力学性能、耐热性能和摩擦磨损性能等的影响。结果表明，添加适量的针状硅灰石、超细白云母均可提高PEUHMW的拉伸强度、表面硬度、热变形温度和耐磨性，其中以超细白云母的效果最佳，针状硅灰石的效果稍差。当超细白云母的填充量为5%时，PEUHMW的拉伸强度提高了28.7 %，热变形温度提高了16 ℃，磨损量降低了58.3 %；当云母的含量达到15 %时，PEUHMW的摩擦因数降低了26.8 %。

关键词: 超高分子量聚乙烯, 增强, 耐磨, 无机填料

Abstract: PEUHMW reinforced by wollastonite and ultrafine muscovite was researched, and then the composites were extruded by single screw extruder. Effect of different fillers on properties of the composites was studied, including mechanical properties, heat resistance, wear resistance, and so on. It showed that the tensile strength, surface hardness, heat distortion temperature and wear resistance could be improved with a proper content of fillers. Among two fillers, ultrafine muscovite was the best. With adding 5 % ultrafine muscovite, the tensile strength of the composite was increased by 28.7 %, heat distortion temperature was increased for 16 ℃ and wear rate was reduced by 58.3 %. With adding 15 % ultrafine muscovite, the coefficient of friction was reduced by 26.8%.

Key words: PE-UHMW, Reinforced, Wear resistant, Inorganic filler

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