碳纖維英文版2

碳纖維英文版2第一頁(yè)，共21頁(yè)。碳纖維——CarbonFiber第二頁(yè)，共21頁(yè)。AbstractofContent

：一、Thestructureandpropertiesofcarbonfiber

二、Preparationofcarbonfiber

三、Theuse,presentsituationanddevelopmentprospectofcarbonfiber

3第三頁(yè)，共21頁(yè)。

Carbonfiberbelongtopolymerizationofcarbon,itistheoppositeoforganicsolidshouldbeconvertedto3dcarboncompounds,carbonizationprocessisdifferent,theproductstructureformationisdifferentalso.Carbonfiberandgraphitefiberinthestrengthandelasticmodulushaveverybigdifference,thisismainlyduetothedifferentstructure.Carbonfiberisofsmallalayerofgraphitecrystalofpolycrystalline,carboncontentabout

75-95%;Graphitefiberstructureandgraphitesimilar,carboncontentofupto98-99%,impurities,quiteafew.Thecarboncontentofcarbonfiberandmanufacturingprocessoffibercarbonizationandgraphitizationprocessrelated.carbonfiberstructure第四頁(yè)，共21頁(yè)。carbonfibercarbonizationprocess

Organiccompoundsinaninertgasheatingto1000ina1500degrees,allthecarbonatoms(nitrogenandhydrogen,oxygen,etc)willgraduallybedeported,carboncontentgraduallytoincrease,asthecarbonatomsexcluded,andsolidalternatewithinaseries

ofdehydrogenation,cyclization,handinchainsandpolycondensation,chemicalreaction,

formcarbonfiber.5第五頁(yè)，共21頁(yè)。

carbonfibergraphitizationprocess

Temperatureto2000a3000degree,tracesofthecarbonatomstocontinuetoruleout,furtherreactionformationfangringplanegraduallytoincrease,thearrangementisneat,sexualorientationsignificantlyincreased,andthe2dalayerofgraphitestructureto3dconversionorderlystructure,formofgraphitefiber,theelasticchessisgreatlyimproved.6第六頁(yè)，共21頁(yè)。Thecarbonfiberthree-dimensionalstructureschematicdrawing.7第七頁(yè)，共21頁(yè)。Carbonfibermaterialperformance

First,carbonfibermaterialselectricconversionefficiency,saveelectricenergy.Carbonfiberelectrothermalbodyisafullblackbodymaterials,electricheatefficiency

ofconversion30%higherthanmetalfever,electricheatefficiencyabout100%.8第八頁(yè)，共21頁(yè)。

Second,carbonfibermaterialsconductiveenergy-savingperformanceisgood,

noimpactonthecurrent.Metalfeverinthestartorclosedcable,becauseofthemetalitselftomaterial,canproduceamomentwhenthemosthighpower,canachievemaximumpowerratingofmorethantwotimes.Atthesametimeinthestart,inacertaintimeinthenottoratedcondition,itspowerwillbeconstantand

continuousgrowth,untiltoratedstate,wouldrestoreratedpower.Carbonfiberheatingcablewithnoimpactcurrent,inthestartofftokeepratedpower,won'tproducethemomentofmaximumpower,sotheenergysavingeffectthanmetal

cable.9第九頁(yè)，共21頁(yè)。

Third,carbonfibermaterialswithlongservicelife.Carbonfiberfeverbynon-metallic

materialsforcablecarbonrawmaterials,theycanensurethelifespanoftheheatingelementforonethousand,theprotectivelayerouterinsulationofsiliconerubberandglassQianWeiSiselection,tinplatingcopperwiremultilayerweavesandbecome,thelifecanguaranteeinmorethan50years.Underthesameconditions,theservicelifeof

carbonfiberheatingcablethanmetalcablemuchlonger10第十頁(yè)，共21頁(yè)。

Fourth,carbonfibermaterialsbygoodinsulation.Carbonfiberheatingcable

insulationisextremelystrong,itsinsulationfaroutweightherating.Inlaboratory

testsinsulation,heatingcablein80℃undernormaltemperaturedippedintothe0.8%saltwaterforelectricity,insulationresistancefor8550MΩ(standardnot

lessthan500MΩ,insulationintensityexperiment:inthe4500V(AC)1min,frequency50Hzcompression,noflash,leakagecurrentbreakdownthan0.002ma(standardis0.25ma),moreoftheverygoodsecurity.11第十一頁(yè)，共21頁(yè)。ThepreparationofCarbonFiber第十二頁(yè)，共21頁(yè)。Generallyspeaking,organicfiberareusedtoasarawmaterialtothemanufacturingprocessofcarbonfiber

：Organicfiber

Preoxidationprocessing

Hightemperaturecarbonization

precursorTheconditionsofchoosingtheprecursor：Highstrength，lessimpurities，thefibernumberwell-distributed。Commonlyusedtoascarbonfiberprecursor

：Polyacrylonitrilefibers

、Viscosefiber

、pitchfiber13第十三頁(yè)，共21頁(yè)。ViscosefiberPitchPANdifficultcomplexLowrateabundantHighrateeasy14第十四頁(yè)，共21頁(yè)。ThepreparationofPAN-CFacrylonitrilecomonomerinitiatorpolymerizationPANspinningPANfiberPreoxidationAirmedium200-300℃CarbonizationInertatmosphere1200-1500℃GraphitizationInertatmosphere2000-3000℃15第十五頁(yè)，共21頁(yè)。

preoxidation

200~300℃PANfiberSixmemberedring

oxygen

16第十六頁(yè)，共21頁(yè)。Carbonizationprocessofthetransversecross-linkingreaction

400~600℃Removingthehydrogen

600~130℃Removingthe

nitrogen

17第十七頁(yè)，共21頁(yè)。TherequirementsofGraphitization

2500-3000℃1tension2Protectivegases

（ArorHe

）3Sealingdevice

（waterormercury

）418第十八頁(yè)，共21頁(yè)。Thepurposeofgraphitization:

Amessylayerofgraphitestructure

Similartothegraphitelayeredcrystalstructure

19第十九頁(yè)，共21頁(yè)。Thepreparationtechnologyofviscosecarbon

SodiumhydroxideCoagulationbath,

washing,

desulfurization,Ble