华南理工大学学报(自然科学版) ›› 2022, Vol. 50 ›› Issue (4): 142-148.doi: 10.12141/j.issn.1000-565X.210110

• 化学化工 • 上一篇    

脉振模压成型对UHMWPE中空制件结构与性能的影响

冯彦洪王瑞松殷小春邹新良林城4   

  1. 1. 华南理工大学机械与汽车工程学院
    2. 华南理工大学聚合物新型成型装备国家工程研究中心
    3.
    4. 东莞正新包装制品有限公司
  • 收稿日期:2021-03-08 修回日期:2021-06-13 出版日期:2022-04-25 发布日期:2021-06-18
  • 通信作者: 殷小春 (1975-),男,博士,教授,主要从事高分子材料成型机械设计与理论研究 E-mail: xcyin@ scut. edu. cn
  • 作者简介:冯彦洪 (1976-),女,博士,教授,主要从事高分子材料加工新技术与新装备研究
  • 基金资助:
    国家重点研发计划项目;东莞市引进创新科研团队

The influence of pulse vibration molding on the structure and performance of UHMWPE hollow parts

FENG Yanhong WANG Ruisong YIN Xiaochun  ZOU Xinliang LIN Cheng    

  1. 1. Guangdong Provincial Key Laboratory of Technique and Equipment for Macromolecular Advanced Manufacturing/National
    Engineering Research Center of Novel Equipment for Polymer Processing/Key Laboratory of Polymer Processing
    Engineering of Ministry of Education,South China University of Technology,Guangzhou 510640,Guangdong,
    China; 2. Zhengxin Packaging Co. ,Ltd. ,Dongguan 523119,Guangdong,China
  • Received:2021-03-08 Revised:2021-06-13 Online:2022-04-25 Published:2021-06-18
  • Contact: 殷小春 (1975-),男,博士,教授,主要从事高分子材料成型机械设计与理论研究 E-mail: xcyin@ scut. edu. cn
  • About author:冯彦洪 (1976-),女,博士,教授,主要从事高分子材料加工新技术与新装备研究
  • Supported by:
    National Key R&D Program of China

摘要: 为了提高超高分子量聚乙烯(UHMWPE)中空制件的机械性能和耐磨性能,采用自主研制的中空制件成型模具,在模压成型过程中引入脉冲振动,使物料在脉冲压力下实现成型,研究脉冲振动对制件微观结构及宏观性能的影响。通过拉伸测试、砂浆磨耗测试、DSC测试、密度测试和2D-WAXD测试,结果表明:施加脉冲振动可提高样品的致密化程度、取向度和结晶度,其拉伸性能和耐磨性能均优于静态条件下成型的制件。

关键词: 超高分子量聚乙烯, 脉冲振动, 中空制件, 致密化, 取向

Abstract: In order to improve the mechanical properties and wear resistance of ultra-high molecular weight polyethylene (UHMWPE) hollow parts, a self-developed hollow part forming mold was used, and pulse vibration was introduced during the compression molding process, so that the material can be formed under pulse pressure. The effect of impulsive vibration on the microstructure and macroscopic properties of the part was studied. Through tensile test, mortar abrasion test, DSC test, density test and 2D-WAXD test, the results show that the application of pulse vibration can increase the density, orientation and crystallinity of the sample, and its tensile properties and wear resistance are better than those molded under static conditions.

Key words: ultra-high molecular weight polyethylene, pulse vibration, hollow parts, densification, orientation

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