石油化工2025，Vol.54Issue(10)：1407-1415,9.DOI:10.3969/j.issn.1000-8144.2025.10.004
多醛化聚轮烷构建分子滑轮增强增韧碳纤维复合材料界面
Construction of molecular pulleys with multi-aldehyde polyrotaxane to improve interfacial toughness and strength of carbon fiber composites
马龙 1邓桢 1陈彦锟 1于运花1
作者信息
- 1. 北京化工大学 材料科学与工程学院,北京 100029
- 折叠
摘要
Abstract
Carbon fiber reinforced resin matrix composites have many excellent properties.However,the inconsistent thermal expansion coefficients between carbon fibers and the epoxy resin(EP)matrix lead to residual stresses at the interphase,inducing stress concentration and resulting in a decrease in the mechanical performance of the carbon fiber reinforced polymers.Therefore,multi-aldehyde polyrotaxane(PR)was prepared as an additive of water-based epoxy to size carbon fiber,and molecular pulleys were constructed in its interphase,which simultaneously improved the interfacial strength and toughness and released the interfacial residual stress.Additionally,schematic models of interphase reinforcing mechanisms were proposed.The results indicate that the transverse fiber bundle's tensile strength,interfacial shear strength,and interfacial toughness of CF-SD-PR/EP composite have increased compared to CF-desized/EP.The interfacial residual stress decreases from(1.60±0.04)GPa to(0.80±0.05)GPa.关键词
界面增强增韧/多醛化聚轮烷/分子滑轮/碳纤维复合材料Key words
interfacial strengthening and toughening/multi-aldehyde polyrotaxane/molecular pulley/carbon fiber composite分类
化学化工引用本文复制引用
马龙,邓桢,陈彦锟,于运花..多醛化聚轮烷构建分子滑轮增强增韧碳纤维复合材料界面[J].石油化工,2025,54(10):1407-1415,9.
