预览加载中，请您耐心等待几秒...

间位双酚A型聚酰亚胺薄膜的制备与性能研究.docx

预览
1/2
2/2

在线预览结束，喜欢就下载吧，查找使用更方便

下载提示 文本预览

如果您无法下载资料，请参考说明：

1、部分资料下载需要金币，请确保您的账户上有足够的金币

2、已购买过的文档，再次下载不重复扣费

3、资料包下载后请先用软件解压，在使用对应软件打开

间位双酚A型聚酰亚胺薄膜的制备与性能研究 Title:PreparationandCharacterizationofPolyimideFilmsContainingBisphenolAforEnhancedProperties Abstract: Polyimidefilmsarewidelyusedinvariousapplicationsduetotheirexcellentthermalstability,mechanicalstrength,andchemicalresistance.ThisresearchaimstoinvestigatethepreparationandpropertiesofpolyimidefilmscontainingbisphenolA(BPA)asacross-linkingagent. Introduction: Polyimidefilmshavefoundextensiveapplicationinmicroelectronics,aerospace,andoptoelectronicindustriesduetotheiruniquecombinationofproperties,suchashighthermalstability,excellentmechanicalstrength,andchemicalresistance.However,theirinherentbrittlenessrestrictstheirapplicationincertainscenarios.Toovercomethislimitation,incorporatingcross-linkingagentslikebisphenolAinthepolyimidematrixwouldcontributetoimprovedmechanicalproperties. ExperimentalMethodology: 1.Materials: -Poly(amicacid)resin:preparedbythepolymerizationofbiphenyltetracarboxylicdianhydride(BTDA)andp-phenylenediamine(PDA). -BisphenolA(BPA):usedasacross-linkingagent. -Solvents:N-methyl-2-pyrrolidone(NMP)andpyridine. 2.PreparationofPoly(amicacid)Solution: -DissolveBTDAandPDAinNMPtoformapoly(amicacid)solutionbystirringatroomtemperatureforseveralhours. 3.FilmCasting: -Thepoly(amicacid)solutionispouredontoacleanglasssubstrateandthenspunatacontrolledspeedtoobtainuniformfilms. -Thefilmsarecuredinanovenatanappropriatetemperaturetoobtainpolyimidefilms. 4.Cross-linkingReaction: -BPAisdissolvedinpyridine,andtheresultingsolutionisappliedtothetopsurfaceofthepolyimidefilms. -Thefilmsarekeptatanelevatedtemperaturetoinducethecross-linkingreactionbetweenthepolyimidematrixandBPA. ResultsandDiscussion: 1.MorphologicalAnalysis: -Scanningelectronmicroscopy(SEM)isusedtoexaminethemorphologyandsurfacemorphologyofthepolyimidefilms. -Cross-sectionimagesrevealthethicknessanduniformityofthefilms. 2.ThermalStability: -Thermogravimetricanalysis(TGA)isperformedtoevaluatethethermalstabilityofthepolyimidefilms. -Differentialscanningcalorimetry(DSC)isusedtodeterminet