• CN:11-2187/TH
  • ISSN:0577-6686

机械工程学报 ›› 2020, Vol. 56 ›› Issue (10): 95-101.doi: 10.3901/JME.2020.10.095

• 材料科学与工程 • 上一篇    下一篇

扫码分享

铝合金-丁腈橡胶复合密封件的界面结合性能

毛剑, 林微超, 宫宁宁, 李熹平   

  1. 浙江师范大学工学院 金华 321004
  • 收稿日期:2019-06-28 修回日期:2019-12-20 出版日期:2020-05-20 发布日期:2020-06-11
  • 通讯作者: 李熹平(通信作者),男,1981年出生,博士,教授。主要研究方向为先进材料成形技术、聚合物加工等。E-mail:xpl2005@163.com
  • 作者简介:毛剑,男,1970年出生。主要研究方向为先进成形加工技术。E-mail:maojian@zjnu.cn
  • 基金资助:
    国家自然科学基金(51675489)和浙江省自然科学基金(LY18E050011,LY20E050008)资助项目。

Interface Properties of Aluminum Alloy-Nitrile Butadiene Rubber Composite Sealing Part

MAO Jian, LIN Weichao, GONG Ningning, LI Xiping   

  1. College of Engineering, Zhejiang Normal University, Jinhua 321004
  • Received:2019-06-28 Revised:2019-12-20 Online:2020-05-20 Published:2020-06-11

摘要: 硫化粘合成型金属-橡胶复合密封件存在环境污染、效率低、难以形成复杂构件的缺点。提出一种利用阳极氧化和硅烷偶联剂处理铝合金表面,再通过控制注塑工艺参数直接成型铝合金-丁腈橡胶(Aluminum alloy-nitrile butadiene rubber,Al-NBR)复合密封构件的方法。研究了阳极氧化电解液温度、偶联剂浓度和注塑成型时模具温度与成型构件界面力学性能的对应关系。利用扫描电子显微镜(Scanning electron microscope,SEM)和傅里叶变换红外光谱(Fourier transform infrared spectrometry,FTIR)对不同条件处理的铝合金基材表面形貌和成分进行表征,探讨了铝合金表面结构形态和成分对铝合金-丁腈橡胶界面结合强度的影响规律以及铝合金-丁腈橡胶密封构件的失效原因和机理。试验结果表明,在优化后的成形参数下制得的复合构件其界面结合强度高于橡胶基体强度,研究所取得的结果对拓展金属-橡胶复合密封构件的成型方法和应用领域具有重要作用。

关键词: 铝合金-丁腈橡胶, 复合密封件, 阳极氧化, 表面处理

Abstract: Metal-rubber composite sealing part is mainly formed by vulcanization bonding, but it has poor vulcanization environment, low efficiency and difficulty in forming complex structural components. A method producing aluminum alloynitrile butadiene rubber composite sealing part by injection technology is proposed. The aluminum alloy substrate is treated by anodizing and coupling agent. The process parameters of injection molding are controlled. The relationship between the anodizing electrolyte temperature, concentration of coupling agent, mold temperature and the interface bonding properties of the composite parts is investigated through tensile shear test. Scanning electron microscopy (SEM) and fourier transform infrared spectroscopy (FTIR) are used to characterize the surface microstructures and compositions of Al substrates treated by different methods. The influence of the surface structure and composition of aluminum alloy on the bonding strength between aluminum alloy and NBR, as well as the failure mechanism of the Al-NBR composite sealing part are discussed. The results show that the bonding strength of the composite is higher than that of the rubber matrix. The obtained results play an important role in expanding the forming methods and application fields of metal-rubber composite part.

Key words: Al-NBR, composite seals, anodic oxidation, surface treatment

中图分类号: