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首页> 外文期刊>Journal of Applied Polymer Science >A comparative study of characteristics of polytetrafluoroethylene fibers manufactured by various processes
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A comparative study of characteristics of polytetrafluoroethylene fibers manufactured by various processes

机译：各种工艺生产的聚四氟乙烯纤维特性的比较研究

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A series of polytetrafluoroethylene (PTFE) fibers were manufactured by three processing methods including extrusion process, split-sheet process and split-film process. The influence of processing methods on fiber properties were systematically studied using four PTFE powders with various molecular weights (3.86 x 10(7), 4.71 x 10(7), 4.92 x 10(7) and 5.11 x 10(7), respectively). Morphology, crystallinity, tensile behavior and friction properties of PTFE fibers were compared by scanning electron micrograph, X-ray diffraction pattern, strength-elongation curves and friction coefficients, respectively. The results showed that the in terms of flat filaments, mechanical properties became weak with the increase of molecular weight of PTFE powders at first, but were improved dramatically with further enhancement of molecular weight. In the case of both round filaments and split-film fibers, fiber properties were improved with growth of molecular weight. Based on characteristics and friction coefficients, potential applications of three types of PTFE samples were analyzed. (c) 2016 Wiley Periodicals, Inc.
机译：通过三种工艺方法制造了一系列聚四氟乙烯（PTFE）纤维，包括挤压工艺，分片工艺和分膜工艺。使用四种不同分子量的PTFE粉末（分别为3.86 x 10（7），4.71 x 10（7），4.92 x 10（7）和5.11 x 10（7））系统研究了加工方法对纤维性能的影响。 。通过扫描电子显微镜，X射线衍射图，强度-伸长率曲线和摩擦系数分别比较了PTFE纤维的形貌，结晶度，拉伸性能和摩擦性能。结果表明，就扁平丝而言，机械性能首先随着PTFE粉末分子量的增加而变弱，但随着分子量的进一步提高而显着改善。在圆丝和裂膜纤维的情况下，纤维性质都随着分子量的增加而改善。根据特性和摩擦系数，分析了三种类型的PTFE样品的潜在应用。 （c）2016年威利期刊有限公司

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