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《碳納米管聚砜納米纖維增韌增強(qiáng)環(huán)氧樹脂的研究》由會員上傳分享，免費(fèi)在線閱讀，更多相關(guān)內(nèi)容在學(xué)術(shù)論文-天天文庫。
1、摘要碳納米管／聚砜納米纖維增韌增強(qiáng)環(huán)氧樹脂的研究本文利用靜電紡絲技術(shù)制備了碳納米管(CNTs)／聚砜(PSF)復(fù)合納米纖維，將CNTs／PSF復(fù)合納米纖維加入環(huán)氧樹脂，通過相分散過程制備增韌增強(qiáng)的環(huán)氧樹脂。通過優(yōu)化制備工藝，采用混酸氧化處理的CNTs，以N，N’．二甲基乙酰胺(DMAC)／丙酮(Acetone)為混合溶劑，在優(yōu)化工藝下通過靜電紡絲制備了CNTs／PSF的納米纖維膜。將CNTs／PSF納米纖維膜加入環(huán)氧樹脂中，在優(yōu)化的固化溫度下，經(jīng)溶解和相分散制得增韌增強(qiáng)的環(huán)氧樹脂。應(yīng)用透射和掃描電子顯微鏡表征了CNrs／PSF復(fù)合納米纖維的直徑分布，通過測試?yán)?/p>
2、伸和沖擊性能分析了復(fù)合納米纖維對環(huán)氧樹脂的增韌和增強(qiáng)作用，對斷裂表面微觀形貌進(jìn)行了觀察，并測試了添加復(fù)合納米纖維的環(huán)氧樹脂動(dòng)態(tài)熱力學(xué)性能。利用能譜分析了相分散的機(jī)理和元素含量。與環(huán)氧樹脂基體相比，含3wt％CNTs的CNTs／PSF納米纖維增韌增強(qiáng)的環(huán)氧樹脂的拉伸強(qiáng)度和模量分別提高13．9％和14．2％，沖擊強(qiáng)度提高18．3％，玻璃化轉(zhuǎn)變溫度提高了5℃。能譜分析顯示CNTs／PSF納米纖維已溶解于環(huán)氧樹脂基體中并實(shí)現(xiàn)了相分離。關(guān)鍵詞：環(huán)氧樹脂，聚砜，碳納米管，復(fù)合材料北京化工大學(xué)碩上學(xué)位論文STUDYONCARBONNANOTUBES／POLYSULFONEN
3、ANOFIBERSTOUGHENINGANDREINFORCINGEPOXYRESINSABSTRACTInviewofthetoughnesseffectofPSF，thereinforcementeffectofCNTsandthecompatibilityofPSFnanofibers．Inourstudy，electrospunCNTs／PSFnanofiberswereprepared，thetoughnessandreinforcementwereperformedviasolvingtheCNTs／PSFnanofibersandphasesep
4、arationintheepoxymatrix．Undertheoptimalparameter，CNTswereoxidizedbymixacid．CNTs／PSFnanofiberswerepreparedbyelectrospinningwithCNTs／PSFsolutionsinmixturesofN，N-dimethylacetamide(DMAC)andacetone．ThecuringprocessingwasoptimizedandtoughenedandreinforcedepoxyresinWaspreparedbyinsertingth
5、eCNTs／PSFnanofibersintoepoxyresinundertheoptimalcuringtemperature．SEMandTEMwereusedforobservingthediametersdistributionofCNTs／PSFnanofibers；tensileandimpactexperimentwereusedforcharacterisingtheeffectoftoughnessandreinforcement，DMTAwasusedformeasuringthedynamicmechanicthermalpropert
6、ies，andSEMandⅡTEMwereusedforobservingthemorphologiesoffracturesurface．EnergyDispersiveSpectrometer(EDS)wasusedtoanalysingtheelementcontent．Comparedtoepoxymatrix，thetensilestrengthandmodulusofCNTs／PSFnanofiberswith3w％CNTstoughenedandreinforcedepoxywereenhancedby13．9％and14．2％respectiv
7、elyandtheimpactstrengthincreased18．3％．Vgincreased5"C．TheresultofEDSindicatedtheCNTs／PSFnanofibersweredissolvedintheepoxyresinmaterialandseparatedsuccessfully．KEYWORDS：epoxyresin，carbonnanotubes，polysulfone，compositeⅢ符號說明SCⅥ帆MCⅥ峨SALSPBlGfPGACollagenDGEBACTBNATBNDDMMCDEAPSFPES石DMTADDS
8、TGDDME·CNTsDMACSEME
