会员注册 | 登录 | 微信快捷登录 支付宝快捷登录 QQ登录 微博登录 | 帮助中心 人人文库renrendoc.com美如初恋!
站内搜索 百度文库

热门搜索: 直缝焊接机 矿井提升机 循环球式转向器图纸 机器人手爪发展史 管道机器人dwg 动平衡试验台设计

   首页 人人文库网 > 资源分类 > DOC文档下载

外文翻译--聚四氟乙烯堪称塑料王.doc

  • 资源星级:
  • 资源大小:51.00KB   全文页数:10页
  • 资源格式: DOC        下载权限:注册会员/VIP会员
您还没有登陆,请先登录。登陆后即可下载此文档。
  合作网站登录: 微信快捷登录 支付宝快捷登录   QQ登录   微博登录
友情提示
2:本站资源不支持迅雷下载,请使用浏览器直接下载(不支持QQ浏览器)
3:本站资源下载后的文档和图纸-无水印,预览文档经过压缩,下载后原文更清晰   

外文翻译--聚四氟乙烯堪称塑料王.doc

TefloncanberatedastheplastickingTeflonPTFE,F4istobeabletobearoneofcorrosionfunctionthebestmaterialintheworldnowadays.Gettheplastickinglaudatorytitletherefore.Chemistrymediumusesitsenergyoveralongperiodoftimeinanykind,itsmanyproblemofcreationfieldssuchaschemicalindustry,petroleum,pharmacyhavingresolvedourcountry.Teflonsealingelement,washer,pad.Theteflonsealingelement,pad,sealwasherarethatthemodelmouldstreatingselectandusesuspensionpolymerizationteflonresinbemadefrom.Teflonandplasticiscomparedwitheachotherotherhavebeabletobearthechemistrycorrosionandbeabletobeartheoutstandingcharacteristicoftemperature,itisencapsulantandfillingmaterialalreadyquiltapplyingbroadly.Teflonmolecularformulateflonisfourfluorineethenespolymers.EnglishabbreviationisPTFE.ThecommodityiscalledTeflonteflon.Kingofbeingplasticbygoodreputation.Teflonbasicstructureis.CF2CF2CF2CF2CF2CF2CF2CF2CF2CF2.Teflonappliestoneedtheantiacidalkaliandorganicvariousmenstruumsbroadly,itsselfoneoftherawmaterialnothavingtoxicitytoperson,butbeingputintouseinprocedureofproductionsatisfiesthebitterfluorineammoniumPFOAbeingconsideredmayhaveacarcinogenesis.TeflonTeflonorPTFE,popularnameplasticking,Chinesecommodityironfluorinedragon,exceptionalfluorinedragon,Tefulong,Thailandfluorinedragonetc.Itisaccomplishedbecausefourfluorineetheneclassicsgettogetherhighpolymer,havethegoodchemistrystability,isabletobearcorrosivity,hermeticsealing,highlubricationtheviscidity,electricityinsulationandfineresistingdonotageendurance.Thelongrangeworksunderthetemperaturebeingabletoin250℃till180℃,exceptsixzonepassmetalsodiumandtheliquidfluorine,abilityotherallchemicals,boilinchloroazoticacidgettingchangeneither.Beingusedasengineeringplastics,maymanufacturetheteflontube,stick,belt,board,filmandsoon.Applytofunctiondemandingthepipeline,container,pump,valvethathigherbeingabletobearcorrodesandmakingtheradar,highfrequencycommunicationequipmentandmaterial,radioequipmentandmaterialandsooningeneral.Antisepsispicturepreparingmetal,glass,earthenwaresurfacewaitsfortheinsulationdippingliquiddispersingvariousliquidworkmaterialavailabletier.Variousgatheringfourfluorinecircles,gatheringfourfluorinepads,gatheringfourfluorinescheckingrootandsoonisusedforpreservativepipelineflangeofallkindshermeticsealingbroadly.Canbeusedtoreeloffrawsilkfromcocoonsbesides,also,teflonfibrefluorinesilktasselabroadthecommodityiscalledexceptionalfluorinesilktassel.Atpresent,variousclassifiedcollectionstetrafluoroethyleneproductalready,inthechemicalindustry,themachinery,theelectron,theelectricappliance,thewarindustry,astronautics,thelinkguaranteedwithnationaleconomydomainsinandsoonbridgeplaythepivotalrole.TheteflonPTFEexploitationconditionsprofessionchemicalindustry,thepetrochemical,therefinery,thechlorinealkali,thesystemacid,thephosphatefertilizer,thedrugsmanufacture,theagriculturalchemicals,thechemicalfiber,influence,thecoking,thecoalgas,theorganicsynthesis,coloredsmelting,thesteelandiron,theatomicenergyandthehighnetproductproductionforexampleionicmembraneelectrolysis,sticksthethickmaterialhandlingandtheoperation,hygienicprocessingProductiondepartmentsandsoonrequesthighlystrictfood,drink.Mediumhydrofluoricacid,phosphoricacid,sulfuricacid,hydrogennitrate,chlorhydricacid,variousorganicacid,organicsolvent,strongoxidantandotherstrongvariouscorrosivitychemistrymedium.Ortemperature20250℃,allowstheshockchillingshockheating,coldhotalternativeoperation0.16.4Mpasatisfypressureshoulderingpressuretill64kgf/cm20.16.4MpaFullvacuato64kgf/cm2TeflonPTFEusesmeritThethermostabilityusestheworkingtemperaturetoamountto250℃.BeabletobearthelowtemperaturehavingfinemachinerytenacityEvenifthetemperaturecomesdownto196℃,maykeep5selongationrate.Beabletobearcorrosionshowingtheinertia,abilitytogreatmajoritychemicalsandmenstruum,strongacidstrongbase,waterandvariousorganicsolvent.BeabletobeartheclimatethelifespanageinghavingplasticmiddlebestHighlubricationisthatsolidmaterialishitbyfrictioncoefficientsminimumpersonNotgluingisthatminimalsurfacetension,doesnotglueanymatterinsolidmaterial.Inertiathenothingispoisonedhavingphysiology,theinnerhasnobadreactionasthemanpowerbloodvesselandthevisceralorganlongrangeimplantationbody.Relativelymolecularbig,lowteflonmassbeinginnumberonehundredthousand,highreachingmorethan10million,generalbeinnumbermillionpolymerizationdegreearein104orderofmagnitude,butpolyethyleneisin103only.Generalcrystaldegreeis9095,thesixzonepasstemperatureis327342℃..TheCF2elementhasarrangedaccordingtosawtoothforminteflonmolecule,comparatively,thehydrogenhasfacedslightlygreatly,thereforetheadjacentCF2elementcannotchoosecompletelyaccordingtoopposingstylealternating,butthewarpingchain,fluorineatombeingtoformaheliciformhavealmostcoveredentirehighpolymerchainsurfacebecauseoffluorineatomradius。Thismolecularstructurehasmadeanexplanationvariousteflonfunction.Helixforming13/6whenthetemperatureislowerthan19℃,Untwisting,forms15/7abitin19℃occurrencephasetransitions,moleculeshelix.346.94and484.88kJ/mol,butteflondepolymerizationgenerates1molfourfluorinesethenesthoughthecarboncarbonkeyandcarbonfluorinekeyfractureneedtoabsorbanenergyrespectivelyinentirefluorinecarboncompoundneedinganenergyonly171.38kJ.Thereforeduringtheperiodofhightemperaturesplittingdecomposition,maindepolymerizationofteflonisfourfluorineethenes。Theteflonweightlessnessrateduringtheperiodof260,370and420℃is1X103104,4Xsumseverytimehourrespectively9X102.Itcanbeseenthatteflonmaybeputintousein260℃longranges.Sincesubsidiaryoutcomeproducingdaedlypoisontimehightemperaturesplittingdecompositionprotectsandguardsagainstteflonthereforefluorinephosgeneanddifferentbutyleneofentirefluorineetc.,beinggoingtopayattentiontosafetyspeciallycontactnakedlight.TeflonkeepsthegoodMechanicsfunctionwithoutexceptionwithin196260℃sbroadertemperaturerange,oneofentirefluorinecarbonhighpolymercharacteristicareinvariableinthelowtemperaturefragile.Beabletobearthechemistrycorrosionandbeabletobearthealkalimetaloutside,teflonwaitingfornaturegettingridofsixzonepassbeingcorrodedhardlybyanychemicalreagent.Theforexampleisinoilofvitriol,hydrogennitrate,chlorhydricacid,boileveninchloroazoticacid,whoseweightandthefunctionnothingchangeequal,areinsolubleinallmenstruumalsonearly,dissolveinentirealkaneslightlyabove300℃about0.1g/100g.Teflonnotattractingtide,notburning,theequalpolestabilizestooxygen,theultravioletray,waitfornaturethereforehavingoutstandingbeingabletobear.Boththeelectricityfunctionteflondielectricconstantwithinbroaderfrequencyrangeanddielectricspoilagehangdownverymuch,andpuncturevoltage,volumeresistivityandbeabletobearanelectricarcallcomparativelyhighly.Beingabletobearbeingabletobearradiationfunctionteflontheradiationfunctionisrelativelypoor104pullsmorals,arousedegradationafteracceptinghighenergyradiation,highpolymerelectricityfunctionandMechanicsfunctioncomedownwithoutexceptionobviously.Polymerizationtefloncomesintobeingbecausefourfluorineethenesgettogetherafterthefreeradical.Upperindustrypolymerizationreactionistostirgoalongs,usereactionheatindispersingunderlargeamountofwaterexistence,easytocontrolthetemperatureand.Bein40likegettingtogether80℃,3isinprogress26,000gramsstrenuously/centimetreunder2pressure,inorganicfaultsulfate,organichyperoxideavailablearetoinitiateanagent,alsocanuseoxidetorestoreinitiatingsystem.Everyfourmoleoffluorinesethenesgiveoffheatwhengettingtogether171.38kJ.Dispersethesurfaceactivitydosegettingtogethermustaddentirefluorinetype,forexampleentirefluorinesadnessorwhosesalt.ApplyteflonbutadoptthemoldingcompressingorforcingouttreatingAlsomaymanufacturewaterdispersingliquid,beusedforcoating,besteepedfibreinwaterorbemanufactured.Teflonisusedasthematerialbeingabletobearthehighlowtemperature,beingabletobearcorrosionmaterial,beinginsulatedbroadlyinindustrysuchasatomicenergy,aerospace,electron,electricity,chemicalindustry,machinery,instrument,appearance,building,spinningandweaving,food,isguardsagainststickycoatingwaiting.ChemicalpropertyBeabletobearcorrosivityBeabletobearallstrongacidincludechloroazoticacid,strongoxidant,reducerandvariousorganicsolventeffectexceptthealkalimetalmelting,flrorationmediumandsodalyehigherthan300℃.InsulationDonotaccepttheenvironmentandthefrequencyeffect,volumeelectricresistancemayamountto1018ohmsCentimetre,mediumwastestheheightsmall,puncturingvoltage.BeabletobearthehighlowtemperatureTheeffecttothetemperaturechangesnotveryoften,reviewregionrangebroad,usagetemperature190260℃.SelflubricityThatminimalfrictionScarriesinhavingplasticisthatthenothingidealpaintsalubricant.SurfaceblockofwoodviscidityTheknownnumbersolidmaterialallcannot

注意事项

本文(外文翻译--聚四氟乙烯堪称塑料王.doc)为本站会员(英文资料库)主动上传,人人文库网仅提供信息存储空间,仅对用户上传内容的表现方式做保护处理,对上载内容本身不做任何修改或编辑。 若此文所含内容侵犯了您的版权或隐私,请立即通知人人文库网([email protected]),我们立即给予删除!

温馨提示:如果因为网速或其他原因下载失败请重新下载,重复下载不扣分。

copyright@ 2015-2017 人人文库网网站版权所有
苏ICP备12009002号-5