固体火箭发动机钢壳体与硅橡胶基外防热涂层间用界面处理剂工艺及性能  

Process and properties of interfacial treating agent utilized between solid rocket motor steel shell and silicone rubber-based external thermal protection coating

作　　者：张光春 罗江凤 郭飞鸽 任京辰 张秋禹[2] 张力恒 ZHANG Guangchun;LUO Jiangfeng;GUO Feige;REN Jingchen;ZHANG Qiuyu;ZHANG Liheng(Xi'an Aerospace Chemical Propulsion Factory,Xi'an 710025,China;College of Science,Northwestern Polytechnical University,Xi'an 710072,China)

机构地区：[1]西安航天化学动力有限公司,西安710025 [2]西北工业大学理学院,西安710072

出　　处：《固体火箭技术》2020年第3期340-345,共6页Journal of Solid Rocket Technology

基　　金：陕西省博士后科研项目资助(2017BSHQYXMZZ22)。

摘　　要：为了从本质上提升钢壳体基材与硅橡胶基涂层间的粘接力,基于钢壳体发动机外表面物化特性以及硅橡胶基涂层材料组成、反应特性,研制了以有机硅化合物为主要组分的界面处理剂,采用FT-IR对界面处理剂的化学结构进行了归属。研究了界面处理剂的贮存时间、浓度、固化时间、固化温度以及耐有机溶剂等工艺性能。采用钢粘接试件对界面处理剂涂覆后的钢基材与硅橡胶基外防热涂层间粘接强度进行了研究。界面粘接强度测试结果表明,粘接强度>2.0 MPa,大于未涂覆界面处理剂时的粘接强度1.2~1.3 MPa。动态电弧风洞试验结果表明,界面处理剂的涂覆可有效保证钢基材与硅橡胶基外防热涂层间界面粘接可靠性。界面处理剂在某型号发动机上工艺扩大试验表明,涂覆有界面处理剂的涂层体系粘接性能稳定、可靠,满足固体发动机的使用要求。In order to improve the adhesion strength between steel shell and silicone rubber-based external protection coatings essentially,an interfacial treating agent using organic silicon compounds as the main component was developed and the chemical structure was characterized by FT-IR based on the physicochemical properties of external surfaces of motor steel shell and the composition and reactivity of silicone rubber-based external protection coatings. The process parameters of interfacial treating agent,such as storage time,concentration,curing time,curing temperature and organic solvents resistance were studied.The influences of interfacial treating agent coating on the interfacial adhesion strength between steel shell and silicone rubber-based external protection coatings were studied by steel adhesion test specimen.Adhesion test results indicate that the adhesion strength is more than 2.0 MPa,which is bigger than the adhesion strength(1.2~1.3 MPa) without interfacial treating agent.Dynamic arc wind tunnel test indicate that the adhesion properties between steel shell and silicone rubber-based external protection coatings are reliable after coating interfacial treating agent.The process expansion test of interfacial treating agent on a certain type of motor indicate that the adhesion properties of interfacial treating agent are stable and meet the solid motor’s application requirements.

关 键 词：界面处理剂 钢壳体 粘接性能 动态电弧风洞试验 工艺扩大试验 

分 类 号：V255.4[一般工业技术—材料科学与工程]