材料科学
复合材料
环氧树脂
热固性聚合物
硅烷化
聚酰胺
复合数
抗剪强度(土壤)
表面改性
纤维
环境科学
化学工程
工程类
土壤科学
土壤水分
作者
Yudong Ding,Honghu Tang,Wuping Shi,Qingzhu He,Zhanyu Zhai
摘要
Abstract Hybrid thermoset‐thermoplastic composites were fabricated by injection overmolding technique in this paper. To improve the interfacial bonding between short fiber reinforced polyamide 6 and continuous fiber reinforced epoxy composites, three different surface pretreatment methods (i.e., surface silanization, plasma treatment and CO 2 laser ablation) were employed. The results show that surface silanization leads to a weak increase in polar functional groups of thermoset composites surface, resulting in a weak increase in interfacial bonding strength of overmolded composites. Compared with plasma pretreatment, CO 2 laser ablation can achieve a highest shear bonding strength due to the formation of interface between injected melt polymer and carbon fibers. This kind of structure is favorable for the bonding strength due to mechanical interlocking. CO 2 laser ablation is a promising technology to improve the bonding strength between short fiber reinforced polyamide 6 and continuous fiber reinforced epoxy composites.
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