Freeze‐drying method prepared UHMWPE/CNTs composites with optimized micromorphologies and improved tribological performance
Journal of Applied Polymer Science(2015)
摘要
Uniformly dispersed carbon nanotubes (CNTs) reinforced ultrahigh molecular weight polyethylene (UHMWPE) composites were successfully prepared by freeze-drying method. Specifically, polymer powders were mixed with CNT aqueous paste, and then freeze-dried. As a consequence, CNTs covered at the surface of UHMWPE powders evenly when CNT content was not very high, which improved the quantity of crystals and crystallinity of UHMWPE/CNTs composites by providing more nucleation sites during the upcoming compression-molded process. Furthermore, optimized dispersion state of CNTs and concomitant higher crystallinity made freeze-drying technique prepared composites display much lower wear rate when compared with pure UHMWPE and UHMWPE/CNTs composites fabricated by common heat-drying method. In a word, our proposed method of freeze-drying is simple and effective for mass production of UHMWPE/CNTs composites, and it is promising to be applied to fabricate many kinds of nanofillers modified polymer composites, for example, polymer/graphene material. (c) 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 41885.
更多查看译文
关键词
MOLECULAR-WEIGHT POLYETHYLENE,CARBON FIBER/EPOXY COMPOSITES,WEAR,NANOTUBES,CRYSTALLIZATION,NANOCOMPOSITES,DISPERSION,BEHAVIOR,SIZE
AI 理解论文
溯源树
样例
生成溯源树,研究论文发展脉络
Chat Paper
正在生成论文摘要