复合材料科学与工程 ›› 2023, Vol. 0 ›› Issue (12): 5-11.DOI: 10.19936/j.cnki.2096-8000.20231228.001

• 基础研究 •    下一篇

不同丙烯腈含量丁腈橡胶低温共固化复合材料制备与性能表征

田程, 梁森*, 吴召琦, 王风全   

  1. 青岛理工大学 机械与汽车工程学院,青岛 266525
  • 收稿日期:2022-11-01 出版日期:2023-12-28 发布日期:2024-02-26
  • 通讯作者: 梁森(1962—),男,博导,教授,主要从事复合材料动力学等方面的研究,liangsen888111@163.com。
  • 作者简介:田程(1997—),男,硕士研究生,主要从事高低温阻尼复合材料的共固化与性能方面的研究。
  • 基金资助:
    国家自然科学基金(52075280);山东省自然科学基金资助项目(ZR2019MEE088)

Preparation and characterization of low temperature co-curing composites of nitrile rubber with different acrylonitrile contents

TIAN Cheng, LIANG Sen*, WU Zhaoqi, WANG Fengquan   

  1. School of Mechanical & Automotive Engineering, Qingdao University of Technology, Qingdao 266525, China
  • Received:2022-11-01 Online:2023-12-28 Published:2024-02-26

摘要: 为探索80 ℃低温环境下橡胶和树脂基体复合材料共固化的条件,模拟计算353.15 K(80 ℃)下的丁腈橡胶(NBR)和E51环氧树脂发生化学反应的自由能,并结合试验实现了NBR N41和NBR N220S阻尼复合材料的共固化。通过正交试验确定一种性能优良且能够与碳纤维/环氧树脂基体预浸料在80 ℃下进行共固化的黏弹性阻尼材料组分,利用四氢呋喃溶剂将黏弹性阻尼材料组分溶解,经刷涂、共固化工艺制备出N41、N220S阻尼复合材料试件。通过扫描电子显微镜对复合材料微观破坏形貌进行分析,通过测试阻尼DMA及层间剪切获得了不同胶种阻尼材料的阻尼性能及剪切性能随阻尼层厚度不同的变化规律曲线。数据表明:选用高丙烯腈含量的丁腈橡胶制作的复合材料阻尼及层间性能更好,NBR N220S更适合作为黏弹性阻尼材料。

关键词: 自由能, 复合材料, 低温共固化, 阻尼物理性能, 微观表征

Abstract: In order to explore the co-curing conditions of rubber and matrix resin composites at 80 ℃ in low temperature environment, the free energy of chemical reaction between nitrile butadiene rubber (NBR) and E51 epoxy resin at 353.15 K (80 ℃) is simulated and calculated, and the co-curing of NBR N41 and NBR N220S damping composites is realized through experiments. A viscoelastic damping material component with excellent performance and co-curing with carbon fiber/epoxy resin matrix prepreg at 80 ℃ is determined by orthogonal test. The viscoelastic damping material component is dissolved by tetrahydrofuran solvent, and N41 and N220S damping composite specimens are prepared by brush coating and co-curing process. The scanning electron microscope is used to analyze the micro damage morphology of the composite. The damping properties and shear properties of different adhesives are obtained by testing the damping DMA and interlaminar shear tests. The data shows that the damping interlaminar properties of the composite made of butadiene acrylic rubber with high acrylonitrile content are better, and NBR N220S is more suitable as a viscoelastic damping material.

Key words: free energy, composites, low temperature co-curing, damping physical performance, microscopic characterization

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