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1、萬方數(shù)據(jù)第36卷第10期2008年l0月硅酸鹽學(xué)報(bào)JOURNALOFTHECHINESECERAMICSOCIETYV01.36,No.10October,2008表面熱處理碳纖維及其增強(qiáng)水泥基復(fù)合材料的電磁屏蔽性能王闖L2,李克智2,李賀軍2,王君龍3(1.陜西鐵路工程職業(yè)技術(shù)學(xué)院道橋工程系,陜西渭南714000;2.西北工業(yè)大學(xué)材料學(xué)院碳/碳復(fù)合材料研究中心,西安710072;3.渭南師范學(xué)院復(fù)合材料研究所,陜西渭南714000)摘要:在l200"12左右,將短切碳纖維進(jìn)行化學(xué)氣相沉積處理后,制成碳纖維增強(qiáng)水泥基復(fù)合材料。對處理后的碳纖維表面形貌及復(fù)合
2、材料樣品的斷面進(jìn)行了掃描電鏡觀察,利用海軍研究實(shí)驗(yàn)室弓型反射率測試系統(tǒng)測試了碳纖維質(zhì)量摻量為O.2%,0.5%,O.6%,1.O%時(shí),復(fù)合材料試樣在ctX,K兒波段對電磁波的反射率。結(jié)果表明:高溫?zé)崽幚砀淖兞颂祭w維的表面形貌,增強(qiáng)了纖維與基體之間的界面結(jié)合力,改善了復(fù)合材料的電磁屏蔽性能。當(dāng)碳纖維摻量為0.2%時(shí),在上述3個(gè)波段均出現(xiàn)最小反射率,復(fù)合材料主要吸收電磁波;當(dāng)碳纖維摻量為0.5%時(shí),復(fù)合材料主要反射電磁波。關(guān)鍵詞:碳纖維;化學(xué)氣相沉積;水泥基:中圖分類號(hào):TB332文獻(xiàn)標(biāo)識(shí)碼:A反射率文章編號(hào):0454-5648(2008)l肛1349_08S
3、URFACETHERMAI.TREATMENToFCARBoNFIBEItSANDELECTRoMAGNETICSⅢELDINGoFCARBoNIilBER/CEM[ENTCoMPoSITESWANGChuangL2,LIKezhfl,LIHejun2,WANGJunlon93(1.DepartmentofHighway&Bridge,ShaanxiRailwayInstitute,Weman714000,Shaanxi;2.SchoolofMaterialsScience,NorthwesternPolytechnicalUniversity,Xi’al
4、l710072;3.CompositesResearchInstitute,WeinanTeachesUniversity,Weinan714000,Shaanxi,China)Abstract:Carbonfiber(CF)/cementcomposites黼preparedaRerCFhadbeentreatedat1200℃throughchemicalvapordeposition.111cfibersurfaceandthefra咖esurfaceofthecompositeswereobservedbyscanningelectronmicro
5、scopy.Therefleetivityofelectro-magneticradiationbythecompositeswasmeasuredinthefrequencyrangesoftheC.band,X-band,andKu-bandusingtheNavalResearchLaboratorytestingsystem.11”influenceofdifferentfibermassfractionof0.2%.0.5%.0.6%and1.O%ontheirreflectivitywasinvestigated.Theresultsshowt
6、hatthermaltreatmentathightemperatureschangesthesurfacestructureofCEThebondingforcebeBveatlthefiberandthematrix勰wellastheshieldingeffectivenessofthecompositesisimproved.Atallbands。theminimumreflectivitydataappearswhenthefibercontentis0.2%andtherearestrongerwave-absorbingpropertiesa
7、tthistime.111cmaximumreflectivitydataemergeswhenthefibercontentis0.5%andthewave-reflectingperformancesiSoptimalthen.Keywords:carbonfibers;chemicalvapordeposition;cement-based;reflectivityWiththedevelopmentofradarandmicrowavecorn-municationtechnology,thestudyofelectromagneticwaveab
8、sorbingmaterialshasincreasedinrec