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文章编号： 1672-6987（2020）05-0053-06； DOI： 10.16351/j.1672-6987.2020.05.007
赵普， 王道晟， 张忠宝， 崔旭*（沈阳航空航天大学 先进聚合物基复合材料辽宁省重点实验室，辽宁 沈阳 110136）
摘要： 以不锈钢网，预浸料和热塑性树脂薄膜构筑加热粘接植入体，利用脉冲电阻熔接技术连接TC4合金。以火焰法原位制备的碳纳米管（CNTs）作为熔接界面的增强剂，借助扫描电子显微镜和静态接触角测试仪分别对改性前后的TC4合金表面形貌和粗糙程度进行分析。对表面改性后的TC4合金进行熔融粘接，并对熔接件进行单搭接拉伸剪切试验，以评估接头的强度。结果表明：CNTs改性后的TC4合金表面元素类别及含量发生改变，粗糙程度增加，接触角从61°上升到127°。TC4合金表面的CNTs涂层与聚醚酰亚胺（PEI）树脂形成机械互锁结构增强熔接接头的力学性能，使最大剪切强度（LSS）提升653%。接头失效分析显示，CNTs的存在使失效模式从层间分离转变为植入体断裂。
关键词： 火焰法； 碳纳米管； 钛合金； 聚醚酰亚胺； 熔融粘接
中图分类号： TB 332文献标志码： A
引用格式： 赵普， 王道晟， 张忠宝， 等. 火焰法原位生长碳纳米管增强TC4的熔融粘接性能\[J\]. 青岛科技大学学报（自然科学版）， 2020， 41（5）： 53-58.
ZHAO Pu, WANG Daosheng, ZHANG Zhongbao, et al. Enhanced fusion-bonding joints of TC4 alloy via CNTs from flame\[J\]. Journal of Qingdao University of Science and Technology（Natural Science Edition), 2020， 41（5）： 53-58.
Enhanced Fusion-bonding Joints of TC4 Alloy via CNTs from Flame
ZHAO Pu, WANG Daosheng, ZHANG Zhongbao, CUI Xu
(Liaoning Key Laboratory of Advanced Polymer Matrix Composites, Shenyang Aerospace University, Shenyang 110136, China)
Abstract: Aninterface implant was designed and prepared by a combination of stainless-steel mesh, prepreg and resin film, and the TC4 alloy plates were connected with aid of the interface implant by pulse resistance fusion bonding technology. The CNTs coating prepared by flame method was used as a reinforcing agent for the fusion bonding interface. The surface morphology and roughness of the TC4 alloys before and after modification were analyzed by scanning electron microscope and static contact angle analyzer. The surface-modified TC4 alloy was melt-bonded, and the single lap tensile shear test was employed to evaluate the strength of the joints. When the TC4 alloy was modified by flame-grown CNTs, the type and content of its surface element are changed, the roughness increased and the contact angle also increased from 61° to 127°. The maximum lap shear strength (LSS) of the fusion-bonded joint with CNTs increased by 653% in contrast to that of the fusion-bonded joint without CNTs. Joint failure analysis shows that the failure mode changes from interfacial debonding of TC4 alloy to adhesive fracture of the implant surface due to the presence of CNTs.
Key words: flame method; carbon nanotubes; titanium alloy; polyetherimide; fusion bonding
收稿日期： 2019-08-30
基金项目： 辽宁省高等学校国（境）外培养项目(2018LNGXGJWPY-YB008）.
作者简介： 赵普(1994—),男,硕士研究生.*通信联系人．
