CAJ | 학술논문

采用吡咯化学沉积聚合方法对聚酯（PET）纤维进行表面改性，研究聚合工艺条件对纤维与环氧树脂界面剪切强度的影响.分别用SEM、共聚焦显微镜、DMA及单纤维拔出实验等测试手段对改性前后纤维的表面形貌、粗糙度、聚吡咯（PPy）与基体纤维大分子作用力及复合材料的界面剪切强度（IFSS）进行研究.结果表明：吡咯化学沉积聚合改性是一种有效提高纤维与树脂界面粘结性能的方法.此外，可进一步通过聚合改性工艺条件控制聚吡咯层的形貌及聚吡咯与基体纤维大分子的作用力，从而调控纤维与树脂界面剪切强度，吡咯气相化学沉积后再液相沉积，增强复合材料界面剪切强度比原纤维的提高了127.98%.
채용필각화학침적취합방법대취지（PET）섬유진행표면개성，연구취합공예조건대섬유여배양수지계면전절강도적영향.분별용SEM、공취초현미경、DMA급단섬유발출실험등측시수단대개성전후섬유적표면형모、조조도、취필각（PPy）여기체섬유대분자작용력급복합재료적계면전절강도（IFSS）진행연구.결과표명：필각화학침적취합개성시일충유효제고섬유여수지계면점결성능적방법.차외，가진일보통과취합개성공예조건공제취필각층적형모급취필각여기체섬유대분자적작용력，종이조공섬유여수지계면전절강도，필각기상화학침적후재액상침적，증강복합재료계면전절강도비원섬유적제고료127.98%.
The method of pyrrole chemical deposition polymerization was applied to modify the surface of PET fiber, and the effect of polymerization process conditions on the interfacial shear strength (IFSS) between fiber and epoxy matrix was also studied. Fiber surface morphology and roughness before and after modification, macromolecular interactive force between polypyrrole (PPy)and fiber, and IFSS of fiber/epoxy were investigated through SEM, confocal microscopy, DMA and single fiber pullout test respectively. The results showed that pyrrole chemical deposition polymerization is an effective way to improve the interfacial adhesion between fiber and matrix. In addition, the morphology of PPy and the macromolecular interactive force between PPy and fiber can be controlled by polymerization process conditions to adjust the IFSS between fiber and epoxy matrix. In this paper, the IFSS of fiber 4# (treated by vapor chemical polymerization first and then by liquid polymerization) reinforced composite is increased by 127.98%!than that of the PET fiber as-received.