飞机刹车用长寿命高摩擦特性炭炭复合材料制备技术

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1、万方数据第25卷第5期新型炭材料V01．25No．52010年10月NEWCARBONMATERIALSOct．2010ArticleID：1007-8827(2010)05-0329-06Preparationandcharacterizationofcarbon／carbonaircraftbrakematerialswithlongservicelifeandgoodfrictionalpropertiessuJun—min91，XIAOZhi—cha01，LIUYong—qion91，MENGFan—cail，PENGZhi—gan91，GULi—minl，LIGuo—fen

2、92，XINGRu—pen91(1．藏缸ChaomaTechnologyCo．，Ltd，AerospaceCompositeMaterialsResearchlmtitute，瓜缸710025，Ch／na；2．MaintenanceandEngineeringDepartmentofShenz缸nAirlines，Shenzhen518128，China)Abstract：A320seriesaircraftcarbon／carbonbrakematerialswct-epmparedbyprocessinganeedle-punchedcarbonfi-berpreformwith

3、quasi—three·dimensionalintegrity．nepreformwasfirstimpregnatedwitharesinandheatedto800℃toconverttheresintocarbon．Ⅲswasfollowedbychemicalvaporinfiltration(CVD)usingpropyleneasthesourcegasandaradialthermalgradient(”externalheating。internalcooling”or”internalheating，externalcooling”)．FortheCVDproce

4、sstheperformswgreseparat[eclbygraphitepadstoallowfleeflowofpropylenealongthechannelsthusformed．Thefinalbrakedisoswereobtainedbyafurtherhigh—temperaturetreatmentfrom1600-2400oC．nesecarbonbrakediscswerecomparedwiththeadvanceddiSCSmadeabroadintermsofgroundtestandserviceperformance．Thetwokindsofcar

5、bonbrakeshavethesamefrictioncoefficientsunderthedesignedlandingenergyandoverloadenergybra-l【ingconditionforA320airplanes．Especially．undertheabortedtake-offcondition．the翻ctiontoemcientofthedomes-ticallydevelopedcarbonbrakediscwas2l48％higherandthestaticfrictiontoe腼cientwas28％higherthanthatoftheon

6、esprovidedbytheaircraftmanufacturer．Theaveragebrakeservicelifeexceeds2700landings．24％timeslargerthantheoriginalones．Keywords：Airplanes；Carbonbrakedisc；Carbon／carboncomposites；FrictioncoefficientCLCnumber：TB332Documentcode：A1Introductioncarbonfiberreinforcedcarbonmatrixcomposites(C／Ccomposites)h

7、avereceivedconsiderableaRen—tionbecauseoflowdensityandsuperiorfrictionalproperties．Asanaircraftbrakedisc，C／Ccompositeshavebeenusedinthepastfortyyears．TherehasbeenapotentialmarketforaJircraftbrakematerials．whichisoccupiedbyfivecomp