期刊
MACROMOLECULAR MATERIALS AND ENGINEERING
卷 298, 期 9, 页码 954-966出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/mame.201200172
关键词
environmental stress cracking resistance (ESCR); fatigue life; mechanical properties; melt processable polytetrafluoroethylene (MP PTFE); microstructure; polytetrafluoroethylene (PTFE)
The influence of molecular weight and comonomer content on the mechanical properties of several melt-processable polytetrafluoroethylene (MP PTFE) materials is studied. Additionally, a comparison of mechanical properties including tensile properties and their dependence on environment as well as fatigue life of PTFE, MP PTFE and perfluoroalkoxy copolymer (PFA) is made. PTFE homopolymer and PTFE copolymers exhibit considerably different mechanical properties. The small strain deformation behaviour up to yielding correlates with the degree of crystallinity and comonomer content, whereas the large strain deformation was found to depend on intercrystalline connections, such as tie molecules and chain entanglements. The special role of these elements in determining the fatigue life and sensitivity to environmental stress cracking is also demonstrated.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据