




已閱讀5頁,還剩5頁未讀, 繼續(xù)免費(fèi)閱讀
版權(quán)說明:本文檔由用戶提供并上傳,收益歸屬內(nèi)容提供方,若內(nèi)容存在侵權(quán),請(qǐng)進(jìn)行舉報(bào)或認(rèn)領(lǐng)
文檔簡(jiǎn)介
TefloncanberatedastheplastickingTeflonPTFE,F4istobeabletobearoneofcorrosionfunctionthebestmaterialintheworldnowadays.Gettheplastickinglaudatorytitletherefore.Chemistrymediumusesitsenergyoveralongperiodoftimeinanykind,itsmanyproblemofcreationfieldssuchaschemicalindustry,petroleum,pharmacyhavingresolvedourcountry.Teflonsealingelement,washer,pad.Theteflonsealingelement,pad,sealwasherarethatthemodelmouldstreatingselectandusesuspensionpolymerizationteflonresinbemadefrom.Teflonandplasticiscomparedwitheachotherotherhavebeabletobearthechemistrycorrosionandbeabletobeartheoutstandingcharacteristicoftemperature,itisencapsulantandfillingmaterialalreadyquiltapplyingbroadly.Teflonmolecularformulateflonisfourfluorineethenespolymers.EnglishabbreviationisPTFE.ThecommodityiscalledTeflon(teflon).Kingofbeingplasticbygoodreputation.Teflonbasicstructureis.-CF2-CF2-CF2-CF2-CF2-CF2-CF2-CF2-CF2-CF2.Teflonappliestoneedtheantiacidalkaliandorganicvariousmenstruumsbroadly,itsselfoneoftherawmaterialnothavingtoxicitytoperson,butbeingputintouseinprocedureofproductionsatisfiesthebitterfluorineammonium(PFOA)beingconsideredmayhaveacarcinogenesis.Teflon(TeflonorPTFE),popularnameplasticking,Chinesecommodityironfluorinedragon,exceptionalfluorinedragon,Tefulong,Thailandfluorinedragonetc.Itisaccomplishedbecausefourfluorineetheneclassicsgettogetherhighpolymer,havethegoodchemistrystability,isabletobearcorrosivity,hermeticsealing,highlubricationtheviscidity,electricityinsulationandfineresistingdonotageendurance.Thelongrangeworksunderthetemperaturebeingabletoin250+till180-,exceptsix-zone-passmetalsodiumandtheliquidfluorine,abilityotherallchemicals,boilinchloroazoticacidgettingchangeneither.Beingusedasengineeringplastics,maymanufacturetheteflontube,stick,belt,board,filmandsoon.Applytofunctiondemandingthepipeline,container,pump,valvethathigherbeingabletobearcorrodesandmakingtheradar,highfrequencycommunicationequipmentandmaterial,radioequipmentandmaterialandsooningeneral.Antisepsispicturepreparingmetal,glass,earthenwaresurfacewaitsfortheinsulationdippingliquiddispersingvariousliquidworkmaterialavailabletier.Variousgatheringfourfluorinecircles,gatheringfourfluorinepads,gatheringfourfluorinescheckingrootandsoonisusedforpreservativepipelineflangeofallkindshermeticsealingbroadly.Canbeusedtoreeloffrawsilkfromcocoonsbesides,also,teflonfibrefluorinesilktassel(abroadthecommodityiscalledexceptionalfluorinesilktassel).Atpresent,variousclassifiedcollectionstetrafluoroethyleneproductalready,inthechemicalindustry,themachinery,theelectron,theelectricappliance,thewarindustry,astronautics,thelinkguaranteedwithnationaleconomydomainsinandsoonbridgeplaythepivotalrole.Theteflon(PTFE)exploitationconditionsprofessionchemicalindustry,thepetrochemical,therefinery,thechlorinealkali,thesystemacid,thephosphatefertilizer,thedrugsmanufacture,theagriculturalchemicals,thechemicalfiber,influence,thecoking,thecoalgas,theorganicsynthesis,coloredsmelting,thesteelandiron,theatomicenergyandthehighnetproductproduction(forexampleionicmembraneelectrolysis),sticksthethickmaterialhandlingandtheoperation,hygienicprocessingProductiondepartmentsandsoonrequesthighlystrictfood,drink.Mediumhydrofluoricacid,phosphoricacid,sulfuricacid,hydrogennitrate,chlorhydricacid,variousorganicacid,organicsolvent,strongoxidantandotherstrongvariouscorrosivitychemistrymedium.Ortemperature-20250,allowstheshockchillingshockheating,coldhotalternativeoperation0.16.4Mpa(satisfypressure-shoulderingpressuretill64kgf/cm2)-0.16.4Mpa(Fullvacuato64kgf/cm2Teflon(PTFE)usesmeritThethermostabilityusestheworkingtemperaturetoamountto250.Beabletobearthelowtemperaturehavingfinemachinerytenacity;Evenifthetemperaturecomesdownto196-,maykeep5%selongationrate.Beabletobearcorrosionshowingtheinertia,abilitytogreatmajoritychemicalsandmenstruum,strongacidstrongbase,waterandvariousorganicsolvent.Beabletobeartheclimatethelife-spanageinghavingplasticmiddlebestHighlubricationisthatsolidmaterialishitbyfrictioncoefficientsminimumpersonNotgluingisthatminimalsurfacetension,doesnotglueanymatterinsolidmaterial.Inertiathenothingispoisonedhavingphysiology,theinnerhasnobadreactionasthemanpowerbloodvesselandthevisceralorganlongrangeimplantationbody.Relativelymolecularbig,lowteflonmassbeinginnumberonehundredthousand,highreachingmorethan10million,generalbeinnumbermillion(polymerizationdegreearein104orderofmagnitude,butpolyethyleneisin103only).Generalcrystaldegreeis9095%,thesix-zone-passtemperatureis327342.TheCF2elementhasarrangedaccordingtosawtoothforminteflonmolecule,comparatively,thehydrogenhasfacedslightlygreatly,thereforetheadjacentCF2elementcannotchoosecompletelyaccordingtoopposingstylealternating,butthewarpingchain,fluorineatombeingtoformaheliciformhavealmostcoveredentirehighpolymerchainsurfacebecauseoffluorineatomradius。Thismolecularstructurehasmadeanexplanationvariousteflonfunction.Helixforming13/6whenthetemperatureislowerthan19,;Untwisting,forms15/7abitin19occurrencephasetransitions,moleculeshelix.346.94and484.88kJmol,butteflondepolymerizationgenerates1molfourfluorinesethenesthoughthecarbon-carbonkeyandcarbon-fluorinekeyfractureneedtoabsorbanenergyrespectivelyinentirefluorinecarboncompoundneedinganenergyonly171.38kJ.Thereforeduringtheperiodofhightemperaturesplittingdecomposition,maindepolymerizationofteflonisfourfluorineethenes。Theteflonweightlessnessrate(%)duringtheperiodof260,370and420is1X10-310-4,4Xsumseverytimehourrespectively9X10-2.Itcanbeseenthatteflonmaybeputintousein260longranges.Sincesubsidiaryoutcomeproducingdaedlypoisontimehightemperaturesplittingdecompositionprotectsandguardsagainstteflonthereforefluorinephosgeneanddifferentbutyleneofentirefluorineetc.,beinggoingtopayattentiontosafetyspeciallycontactnakedlight.TeflonkeepsthegoodMechanicsfunctionwithoutexceptionwithin196260sbroadertemperaturerange-,oneofentirefluorinecarbonhighpolymercharacteristicareinvariableinthelowtemperaturefragile.Beabletobearthechemistrycorrosionandbeabletobearthealkalimetaloutside,teflonwaitingfornaturegettingridofsix-zone-passbeingcorrodedhardlybyanychemicalreagent.Theforexampleisinoilofvitriol,hydrogennitrate,chlorhydricacid,boileveninchloroazoticacid,whoseweightandthefunctionnothingchangeequal,areinsolubleinallmenstruumalsonearly,dissolveinentirealkaneslightlyabove300(about0.1g100g).Teflonnotattractingtide,notburning,theequalpolestabilizestooxygen,theultravioletray,waitfornaturethereforehavingoutstandingbeingabletobear.Boththeelectricityfunctionteflondielectricconstantwithinbroaderfrequencyrangeanddielectricspoilagehangdownverymuch,andpuncturevoltage,volumeresistivityandbeabletobearanelectricarcallcomparativelyhighly.Beingabletobearbeingabletobearradiationfunctionteflontheradiationfunctionisrelativelypoor(104pullsmorals),arousedegradationafteracceptinghigh-energyradiation,highpolymerelectricityfunctionandMechanicsfunctioncomedownwithoutexceptionobviously.Polymerizationtefloncomesintobeingbecausefourfluorineethenesgettogetherafterthefreeradical.Upperindustrypolymerizationreactionistostirgoalongs,usereactionheatindispersingunderlargeamountofwaterexistence,easytocontrolthetemperatureand.Bein40likegettingtogether80,3isinprogress26,000gramsstrenuously/centimetreunder2pressure,inorganicfaultsulfate,organichyperoxideavailablearetoinitiateanagent,alsocanuseoxidetorestoreinitiatingsystem.Everyfourmoleoffluorinesethenesgiveoffheatwhengettingtogether171.38kJ.Dispersethesurfaceactivitydosegettingtogethermustaddentirefluorinetype,forexampleentirefluorinesadnessorwhosesalt.Applyteflonbutadoptthemoldingcompressingorforcingouttreating;Alsomaymanufacturewaterdispersingliquid,beusedforcoating,besteepedfibreinwaterorbemanufactured.Teflonisusedasthematerialbeingabletobearthehighlowtemperature,beingabletobearcorrosionmaterial
溫馨提示
- 1. 本站所有資源如無特殊說明,都需要本地電腦安裝OFFICE2007和PDF閱讀器。圖紙軟件為CAD,CAXA,PROE,UG,SolidWorks等.壓縮文件請(qǐng)下載最新的WinRAR軟件解壓。
- 2. 本站的文檔不包含任何第三方提供的附件圖紙等,如果需要附件,請(qǐng)聯(lián)系上傳者。文件的所有權(quán)益歸上傳用戶所有。
- 3. 本站RAR壓縮包中若帶圖紙,網(wǎng)頁內(nèi)容里面會(huì)有圖紙預(yù)覽,若沒有圖紙預(yù)覽就沒有圖紙。
- 4. 未經(jīng)權(quán)益所有人同意不得將文件中的內(nèi)容挪作商業(yè)或盈利用途。
- 5. 人人文庫網(wǎng)僅提供信息存儲(chǔ)空間,僅對(duì)用戶上傳內(nèi)容的表現(xiàn)方式做保護(hù)處理,對(duì)用戶上傳分享的文檔內(nèi)容本身不做任何修改或編輯,并不能對(duì)任何下載內(nèi)容負(fù)責(zé)。
- 6. 下載文件中如有侵權(quán)或不適當(dāng)內(nèi)容,請(qǐng)與我們聯(lián)系,我們立即糾正。
- 7. 本站不保證下載資源的準(zhǔn)確性、安全性和完整性, 同時(shí)也不承擔(dān)用戶因使用這些下載資源對(duì)自己和他人造成任何形式的傷害或損失。
最新文檔
- 編輯中級(jí)職稱試題及答案
- 深度解讀2025年汽車共享平臺(tái)運(yùn)營(yíng)數(shù)據(jù)與用戶忠誠(chéng)度提升策略報(bào)告
- 2025南航招聘筆試題目及答案
- 積極應(yīng)變面試題及答案
- 有效團(tuán)隊(duì)溝通的商務(wù)英語試題及答案
- 教師教育教學(xué)反思在政策導(dǎo)向下的調(diào)整與適應(yīng)研究試題及答案
- 電池技術(shù)進(jìn)步對(duì)市場(chǎng)的效應(yīng)試題及答案
- 深入解讀2025年創(chuàng)業(yè)扶持政策與企業(yè)責(zé)任的關(guān)系試題及答案
- 教育游戲化在兒童教育中的創(chuàng)新應(yīng)用:2025年教學(xué)設(shè)計(jì)策略與實(shí)踐探索報(bào)告
- 深入探討音符的組合與構(gòu)建2025年樂理考試試題及答案
- GA/T 751-2024公安視頻圖像屏幕顯示信息疊加規(guī)范
- 2025至2030中國(guó)長(zhǎng)鏈氯化石蠟行業(yè)供需現(xiàn)狀與前景策略研究報(bào)告
- 租地蓋大棚合同協(xié)議
- 自體輸血知識(shí)培訓(xùn)課件
- 人教A版高一下冊(cè)必修第二冊(cè)高中數(shù)學(xué)8.6.2直線與平面垂直【課件】
- 小學(xué)生涯課件
- 西藏拉薩中學(xué)2024-2025學(xué)年高三第二學(xué)期英語試題4月月考試卷含解析
- GB/T 45421-2025城市公共設(shè)施非物流用智能儲(chǔ)物柜服務(wù)規(guī)范
- 檔案相關(guān)法律法規(guī)知識(shí)復(fù)習(xí)試題及答案
- 漢語方言與地方文化認(rèn)同的關(guān)系研究論文
- 西北四?。兾魃轿髑嗪幭模?025屆高三下學(xué)期第一次聯(lián)考數(shù)學(xué)試卷含答案
評(píng)論
0/150
提交評(píng)論