聚四氟乙烯高温蠕变性能表征方法的研究  

Study on Characterization of High-temperature Creep Behavior of Polytetrafluoroethylene

作　　者：张飞[1] 寇开昌[1] 颜录科[1] 狄西岩[1] 吴海维[1] 

机构地区：[1]西北工业大学理学院应用化学系,陕西西安710072

出　　处：《中国塑料》2008年第4期83-85,共3页China Plastics

摘　　要：采用自制的高温蠕变仪来测试聚四氟乙烯(PTFE)材料的高温压缩蠕变行为。以6 mm×6 mm×50.8 mm的纯 PTFE 试样为例,在250℃,5.226 kg 载荷的环境中进行测试。结果表明:表征材料高温蠕变性能的要素主要有试验温度、载荷应力、最后的应变及试样具体的蠕变曲线。并通过计算得出试样所受应力为1.452 MPa,蠕变量为0.56 mm,应变为0.011。最后,通过自制的高温蠕变仪绘制出 PTFE 的蠕变曲线,该曲线与典型蠕变曲线基本吻合。The high-temperature compression creep behavior of polytetrafluoroethylene （PTFE） was characterized using a home-made tester. The PTFE samples 6 mm × 6 mm × 50.8 mm in size were test- ed at 250 ℃ with a load of 5. 226 kg. The results showed that the stress of pure PTFE sample was 1. 452 MPa, the creep quantity was 0.56 mm, and the strain was 0. 011. The creep curve of the sample agreed with standard one.

关 键 词：聚四氟乙烯 压缩蠕变 高温蠕变仪 

分 类 号：TQ325.4[化学工程—合成树脂塑料工业]