纺织科学与工程学报2024，Vol.41Issue(3)：45-53,9.DOI:10.3969/j.issn.2096-5184.2024.03.008
聚己内酰胺-己内酯微球/PA6原位微纤化复合材料的制备及性能研究
Preparation and Properties Research of Polycaprolactam-caprolactone Microspheres/PA6 in Situ Microfibrillated Composites
摘要
Abstract
In situ microfibrillation is an effective method to improve the strength and toughness of compos-ites,but traditional in situ microfibrillated materials are based on the incompatible characteristics of two-phase systems.In order to investigate the effects of the two-phase viscosity ratio on the microfibrillating behavior and composite properties under the compatible system,in this paper,poly(caprolactam-caprolactone)(P(CL-CLO))copolymerized microspheres were fabricated by anionic polymerization,and P(CL-CLO)/PA6 in situ microfibrillated composites were obtained by blending and spinning with PA6 slices in a twin-screw extruder.The effects of CLO content,blending ratio and drafting ratio on the morphology of copolymerized microspheres and mi-crofibers as well as the properties of P(CL-CLO)/PA6 were investigated respectively.It was observed by SEM that P(CL-CLO)copolymerized microspheres with regular morphology were obtained when the CLO content was 25 wt%or less.The results of rotational rheometry showed that the regulation of viscosity ratio of P(CL-CLO)to PA6 between 1.25～1.65 was achieved by controlling the CLO content.The observation of microfiber morphology revealed that the microfibers formed with 1.45～1.65 viscosity ratio were uniform in size.At the same time,when the blending ratio was 2:8 and the drafting ratio was 4,the elongation and breaking strength of the microfiber composites increased by 31.6%and 2.96%respectively compared with those of pure PA6.It indicated that there was a good interfacial force between microfiber and matrix,which realized the reinforcement and toughening of composite fiber.关键词
原位微纤化/粘度比/共聚微球/相分离Key words
in situ microfibrillation/viscosity ratio/copolymer microsphere/phase separation分类
通用工业技术引用本文复制引用
张珞涛,汪继承,王伟,宋理想,戚栋明..聚己内酰胺-己内酯微球/PA6原位微纤化复合材料的制备及性能研究[J].纺织科学与工程学报,2024,41(3):45-53,9.基金项目
国家自然科学基金项目(51973197),绍兴市基本公益项目(2023A11007),现代纺织技术创新中心自立项目(CXZX2023008HD、CXZX2023017HD). （51973197）
