摘要
采用阴离子接枝法对K ev lar纤维(KF)进行改性。利用偏光显微镜研究了未改性K ev lar纤维(KF 0)和改性K ev lar纤维(KF 1)增强尼龙6复合材料的结晶情况,界面横晶的形成机理及影响因素。结果表明,在尼龙6/KF复合体系中,KF 0和KF 1的加入都能诱发其表面的基体PA 6形成横晶,在低温下纤维的诱发横晶能力小,形成的横晶不致密、不完整;在高结晶温度Tc下形成的横晶完整而致密,纤维的诱发横晶能力大;KF 1与基体有较强的结合力,故其诱发横晶能力较KF 0强。
In the paper, Kevlar fiber was modified by anionic grafting of nylon 6. The mechanism and influence of transcrystallization in raw Kevlar fiber reinforced nylon6 copmposites（PA6/ KF0）and modified Kevlar fiber reinforced nylon6 copmposites（PA6/KF1） were studied by PLM, so did the crystallization instance. The results show that both KF0 and KF1 can do crystalline nucleation to matrix, and form interracial transcrystallization; At certain situation, the nucleation of KF increases with temperature, that is to say, higher temperature contributes to forming compact and integrated transcrystallization; Because the modified Kevlar fiber adjoins the matrix well, its nucleation is stronger than that of the raw Kevlar fiber.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2005年第6期142-145,共4页
Polymer Materials Science & Engineering
基金
福建省自然科学基金(E0410013)
福建省发展计划委员会项目(闽计高技[2002]161)
