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1、西南科技大學碩士研究生學位論文第1頁摘要近年來,國內(nèi)外關于室溫硫化硅橡膠膠粘劑的研究大多是針對單組份室濉引橡膠膠羲’,劑及應用,關于雙組份室溫硫化硅橡膠粘劑相對較少。隨著現(xiàn)代武器的發(fā)展,硅橡膠膠粘劑的優(yōu)越性引起了人們的關注,室溫硫化硅橡膠結構穩(wěn)定,具有良好的熱穩(wěn)定性、卓越韻耐老化性以及突出的阻尼特性,因此其在武器設備領域具有明顯的優(yōu)越性,但硅橡膠分子間的相互作用力弱,內(nèi)聚能低導致其粘接強度低,使其在特殊裝備方面的應用受到了限制。本文塒雙組份室溫硫化硅橡膠膠粘劑進行了初步的改性研究,提高了硅橡膠膠赫劑的秸接強度。采用原位聚合法,以羥基封端的縮合型室溫硫化硅橡脧
2、為基礎膠,選用甲基丙烯酸酯、自制聚氨酯、MQ硅樹脂三種改性室溫硫化硅橡膠,結合偶聯(lián)劑、白炭黑有效提高了雙組份室溫硅橡膠粘膠劑的粘接力,最商達5.64MPa。同時結合一定分析手段測定了改性硅橡膠膠粘劑的結構、分f量、耐溫性、填料分散性等物理化學性質(zhì),探索了改性膠粘劑組份用量、制備工藝等對硅橡膠膠粘劑性能的影響,確定了較佳的制作工藝。關鍵詞:室溫硫化硅橡膠改性膠粘劑原位聚合西南科技大學碩士研究生學位論文第1I頁AbstractMostoftherelatedresearchathomeandabroadwhichconcernedaboutroomtempera
3、turevulcanizedsiliconerubberadhesiverelatemostlytoonecomponentanditsapplicationinrecentyears,butabouttwocomponentscomparativelyless.Recentlytheweapondesignershavebeenpayingmoreattentiontotheroomtemperaturevulcanizationsiliconerubberadhesivebecauseofitsexcellentheatstability,eximion
4、sagingresistanceandoutstandingdampingproperty,etc,whichmadetheroomtemperaturevulcanizationsiliconerubberhavedistinctadvantagesinmodemweapon’Sadhibitingapplication.Thentheroomtemperaturevulcanizationsiliconerubberadhesiveissuperiortomanyothersortsofadhesiveswhereastheyhaveexcellentp
5、ropertiesindomainofmodemweapon.However,becauseofthelowcohesiveenergyinthestablestructureandweakinteractionsbetweenmolecules,theadhesiveintensityoftheroomtemperaturevulcanizationsiliconerubberislow,whichrestricttheapplicationofsiliconernbherinmilitarya丘越rs.Howevertheroomtemperaturev
6、ulcanizationsiliconembherwithstablestructurehaslowcohesiveenergycausetothelowadhesiveintensity,andtheinteractionsbetweenitsmoleculesisweak,whichrestricttheapplicationofsiliconerubberinmilitaryaffairs.InthispapertheelementarystudyWaScarriedtomodifythetwocomponentsroomtemperaturevulc
7、anizationsiliconerubberwhichimprovedadhesiveintensityofsiliconerubheradhesive.Weselectedmethylacrylicacid,polyurethane,MQsiliconeresintomodifybasicadhesivewhichwasroomtemperaturevulcanizationsiliconerubberwithhydroxylintailendofsiliconerubbermoleculesbypolymerizafioninsitumethod.Th
8、emodifledroomtemperaturevu