EFFECTS OF MATRIX MOLECULAR WEIGHT ON STRUCTURE AND REINFORCEMENT OF HIGH DENSITY POLYETHYLENE/MICA COMPOSITES

Li Chen; Yu-fang Xiang; Ke Wang; Qin Zhang; Rong-ni Du; Qiang Fu

doi:10.1007/s10118-011-1035-9

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EFFECTS OF MATRIX MOLECULAR WEIGHT ON STRUCTURE AND REINFORCEMENT OF HIGH DENSITY POLYETHYLENE/MICA COMPOSITES

Paper | Updated：2021-06-21

- EFFECTS OF MATRIX MOLECULAR WEIGHT ON STRUCTURE AND REINFORCEMENT OF HIGH DENSITY POLYETHYLENE/MICA COMPOSITES
- Chinese Journal of Polymer Science Vol. 29, Issue 3, Pages: 377-389(2011)
- Affiliations：
  
  Department of Polymer Science and Materials, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
- Author bio：
  
  **Qiang Fu (傅强), E-mail: qiangfu@scu.edu.cn
- Funds：
- DOI：10.1007/s10118-011-1035-9
  CLC：
- Received：26 April 2010，
  
  Revised：2010-05-17，
  
  Accepted：22 June 2010，
  
  Published：2011
- Accepted：
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Li Chen, Yu-fang Xiang, Ke Wang, et al. EFFECTS OF MATRIX MOLECULAR WEIGHT ON STRUCTURE AND REINFORCEMENT OF HIGH DENSITY POLYETHYLENE/MICA COMPOSITES[J]. Chinese Journal of Polymer Science, 2011, 29(3): 377-389.
DOI：

Li Chen, Yu-fang Xiang, Ke Wang, et al. EFFECTS OF MATRIX MOLECULAR WEIGHT ON STRUCTURE AND REINFORCEMENT OF HIGH DENSITY POLYETHYLENE/MICA COMPOSITES[J]. Chinese Journal of Polymer Science, 2011, 29(3): 377-389. DOI： 10.1007/s10118-011-1035-9.

摘要

Abstract

Three types of high-density polyethylene (HDPE) with different molecular weights (high

medium and low) were adopted to evaluate the influence of matrix molecular weight on the structure-property relation of injection-molded HDPE/mica composites through a combination of SEM

2d-WAXS

DSC

DMA and tensile testing. Various structural factors including orientation

filler dispersion

interfacial interaction between HDPE and mica

etc

which can impact the macroscopic mechanics

were compared in detail among the three HDPE/mica composites. The transcrystallization of HDPE on the mica surface was observed and it exhibited strong matrix molecular weight dependence. Obvious transcrystalline structure was found in the composite with low molecular weight HDPE

whereas it was hard to be detected in the composites with increased HDPE molecular weight. The best reinforcement effect in the composite with low molecular weight HDPE can be understood as mainly due to substantially improved interfacial adhesion between matrix and mica filler

which arises from the transcrystallization mechanism.

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