摘要
PPS 的结晶形态与其树脂的处理、结晶条件及成型条件有关。在 PPS/PTFE 共混物中,PTFE 的织态结构及其热力学性质与其是否预烧结有关。表面张力及结晶动力学测定结果表明,PPS 与 PTFE 的界面存在一定的相互作用。在界面上两者相互向对方表面转移,使对方表面能发生变化。PPS 的存在对 PTFE 结晶有一定的成核作用,而 PTFE 的存在对 PPS 的结晶并无促进作用。
The crystalline morphologies of polyphenylene sulfide (PPS) are affected bythe resin treatment,crystallinzation condition and processing.The texture ofpolytatrafluoroethylene (PTFE) and its thermodynamic properties are associated withwhether it has been sintered or not prior to be molded.There exists interfacial interactionbetween PPS and PTFE to some extent.Both PPS and PTFE can transfer to the oppositesurface at the interface region and as a result the surface energy varies.The presence of PPSexhibits a nucleation effect on the crystallization of PTFE while the presence of PTFEshows no accelerating effect on the crystallization of PPS.
关键词
聚苯硫醚
聚四氟乙烯
共混物
界面
polyphenylene sulfide
polytatrafluoroethylene
interface
surface energy
crystallization kinetics
