PVDF在大口径海洋管材密封层中的工艺探究

王卫锋, 刘栋杰, 裴整社, 曹静, 沙勇, 李丽玮

Extruding Research of PVDF Used in Large Diameter Flexible Pipe as Inner Pressure Sheath

Wei-feng WANG, Dong-jie LIU, Zheng-she PEI, Jing CAO, Yong SHA, Li-wei LI

表4 挤出PVDF管材的渗透性能

Table 4 Permeation characteristics of extruded PVDF

渗透介质 测试温度 /℃ 测试压力 /MPa 渗透体积 /(cm3 ·cm·cm-2 ·s-1·Pa-1) CH4 111 10 4.2×10-3 CH4 130 10 9.0×10-3 CO2 130 11 4.7×10-2 CO2 130 48.5 5.7×10-2 H2S 130 10 1.36×10-1