航空用新型rtv-2有机硅胶黏剂研制word格式论文.docxVIP

粘接面表面处理方式对粘接性能影响采用硅烷偶联剂处理和低温等离子体处理方法对6146#硅橡胶板进行了表面改性。测试了表面处理后6146#硅橡胶板的接触角、表面能，并测试了Al-硅橡胶试样的粘接强度。结果表明，6146#硅橡胶板水接触角明显变小，表面润湿性有明显改善，粘接强度增大。两种硅烷偶联剂混合搭配使用效果较好，其中以KH550KH560=1：1效果最好，处理后的硅橡胶表面的水接触角减低了35.1%，表面能提高了49.5%，粘接强度增大了148.9%；采用表面刷涂方法比浸渍效果好；低温等离子体表面处理对硅橡胶表面亲水性及表面能有一定的改善，但等离子体处理后的硅橡胶表面有很明显的时效性。航空用新型RTV-2有机硅胶黏剂的制备航空用新型RTV-2 有机硅胶黏剂配方如下：甲组分－m(103 胶)：m(A171 改性的气相白炭黑)：m(MQ硅树脂)=25:2:2 乙组分－m(硼酸正丁酯)：m(二月桂酸二丁基锡)=4:5 甲乙组分比例－m(甲)：m(乙)=18:1 表面处理剂－m(KH550):m(KH560):m(无水乙醇)=1:1:50。航空用新型RTV-2 有机硅胶黏剂与国产GPS-2 胶进行性能对比结果为：新型RTV-2有机硅胶黏剂的工艺性和粘接性能明显优于国产GPS-2胶综合性能较好因此它完全能满足航空使用要求。[关键词]M-5气相白炭黑；室温硫化双组分(RTV-2)硅橡胶；硅烷偶联剂；MQ硅树脂；等离子体；表面改性AbstractBecauseofthemanyexcellent performanceofRTVSilicone rubber adhesive，it is widelyusedintheaviationfield.ThemodificationresearchonadhesivenessofRTV SiliconRubberadhesiveinthispapermainlyincludessilanecouplingagenttreatedfumedsilicamodification，MQ-typesiliconeresinmodification，bondingofsurfacemodification to improveits bondingperformance.ThereseachofRTV-2siliconerubberadhensivereinforcedbyfumed silicawhich modifiedbysilanecoupling agentM-5 fumed silica was surface modified by diffferent silane coupling agent（γ-Glycidoxypropy1trimethoxysilane、γ-Methacryloxypropyltrimethoxy silane、vinyltrimethoxysilane）to enhancethe compatibilityofsilicone rubber，the changeofsurfacestatus about fumed silicabeforeandaftertreatment was characterized by FT-IR；Modifiedsilicawasaddedtoroomtemperaturevulcanizable(RTV)silicone rubber，themechanicalproperties of which was tested；Metal and silicone rubberwasalsotreatedbysilanecouplingagent.TheFT-IRresultsshowedthatsilanecoupling agentmoleculargroupwasgraftedonthesurfaceoffumedsilica.Themechanical propertiestestsshowedthatsilicawhichmodifiedbysilanecouplingagentreinforcedsilicone rubber obviously，the best effect treatment of silane coupling agent isvinyltrimethoxysilane，thetensilestrengthofsiliconerubberwhichblend15%fumed silicais 2.54 MPa，the adhesion strength reach 1.5 MPa.ThepreparationofsiliconeresinandreinforcedRTV-2siliconerubber