摘要
采用3种硅烷偶联剂(KH550、KH570、A171)改性亚麻纤维(flax fiber),并将改性亚麻纤维与聚丙烯(PP)进行复合,制成改性亚麻纤维/聚丙烯复合材料。结果表明:改性前后亚麻纤维的最大降解温度范围为353.42~363.35℃,硅烷偶联剂的加入并未对亚麻纤维的热稳定性造成明显的影响。拉伸强度结果证实硅烷偶联剂改善了亚麻纤维与聚丙烯之间的界面相容性,且KH570处理的亚麻纤维所制备的复合材料的拉伸强度最优,为35.54 MPa。与KH550、A171改性亚麻纤维制备的复合材料相比,KH570改性亚麻纤维/聚丙烯复合材料具有最佳的热稳定性。复合材料的差示扫描量热结果显示,适量硅烷偶联剂的加入提高了复合材料的结晶速度与结晶度。
In our current study,flax fiber was modified by three silane coupling agents(KH550,KH570,A171),and the modified flax fiber was combined with polypropylene(PP)to make modified flax fiber/PP composite material.The results showed that the maximum decomposition temperature of flax fiber before and after modification ranged from 353.42℃to 363.35℃,and the addition of silane coupling agent had no significant effect on the thermal stability of flax fiber.The tensile strength results showed that silane coupling agent improved the interfacial compatibility between flax fiber and polypropylene,and the tensile strength of the composite made of flax fiber treated with KH570 was the best,reaching 35.54 MPa.Compared with the composite prepared by the KH550 and A171 modified flax fiber,the KH570 modified flax fiber/polypropylene composite had the best thermal stability.The differential scanning calorimetry results of the composites showed that the crystallization rate and crystallinity of the composites were improved by adding appropriate amount of silane coupling agent.
作者
王婷
张馨予
王叶凡
刘海棠
WANG Ting;ZHANG Xinyu;WANG Yefan;LIU Haitang(Key Laboratory of Paper and Biomass Refining of China Light Industry,Tianjin Key Laboratory of Pulp and Paper,College of Light Industry Science and Engineering,Tianjin University of Science and Technology,Tianjin 300457,China;Jiangsu Key Laboratory of Biomass Energy and Materials,Nanjing 210042,China)
出处
《天津科技大学学报》
2025年第3期57-64,共8页
Journal of Tianjin University of Science & Technology
关键词
亚麻纤维
聚丙烯
硅烷偶联剂
界面相容性
flax fiber
polypropylene
silane coupling agent
interface compatibility
