環(huán)氧樹脂基復合型導電材料制備工藝研究.pdf

1、分類號——密級西北大學單位代碼：!!!!!學號：20022517碩士學位論文作者疊耋塑指導教師疊△氐專業(yè)技術職務教授學科(專業(yè))垡堂三堇答辯日期學位授予日期二OO五年五月Studyonpreparationprocessofepoxyresin(EP)conductingcompositesmaterialAbstractThepreparationprocessandpropertiesofexpendedgraphite(EG)ep

2、oxyresin(EP)wasstudiedinthisthesissystemicallyThroughtestofelectricalresistivityandscanningelectronmicroscope(SEM)，wefocusmostlyonthethingsasfollows：Theoptimumprocessconditionandef!fectfactortopreparethecompositebyco—mix

3、edmethod；Theeffectoftheaddednano—Ti02totheelectricalresistivityofthecomposite；Theeffectofdifferentpreparingmethodstotheelectricalresistivityofthecomposite；Non—ohmpropertiesofthecompositeThemainconclusionsareshownasfollow

4、s：(1)Theoptimalprocessconditiontopreparethecompositebyco—mixedmethodis：thecriticalvalueofEGis6wt％；ethyleneglycoldiglycidyletherisselectedastheactivediluent，andtheoptimalcontentis15wt％；ethanolisselectedastheinactivediluen

5、t，itisusedtomakegooddispersionofEG；theoptimumstirringtimeis60min；whettingmakesthedecreaseoftheconductingpropertiesbutincreaseofthemechanicalpropertiesintheory；theadditionofcouplingagentmakestheincreaseoftheelectricalresi

6、stivityofthecompositewhenEGisinlowcontent，butwhenthecontentofEGishighenoughtofulfilltheconductingpaththerehaslittleeffecttotheconductingproperties；withtheincreaseofexpansionratioofEG，theelectricalresistivityofthecomposit

7、eincreasedwhenEGisinlowcontent，andthewholedecreasedtrendoftheelectricalresistivityofthecompositeismorcobvious(2)Theadditionofllano—Ti02makesincreasetheelectricalresistivityofthecomposite，andthisismoreobviouswhenEGisinlow