Polytetrafluoroethylene (PTFE), tseem hu ua "Teflon" thiab "PTFE resist",, corrosion tsis kam, C thiab F, hauv cov tshuaj fluorine hloov polyethylene atoms atoms .
1. cov qauv thiab cov khoom ntawm PTFE
1. cov qauv kev coj ua
Polytetrafluoroethylene yog homopolymer ntawm tetrafluoroethylene, uas tuaj yeem npaj los ntawm txoj kev ncua polymerization, txheej txheem kev tshem tawm thiab emulsion xyaum {}}
Polytetrafluoroethylene yog cov khoom muaj zog super thiab tsuas yog hom fluoropoplastic uas tuaj yeem siv ua engineering plastics {}}
2. Cov Khoom Tseem Ceeb
Tus txheeb ze lub cev hnyav ntawm PTFE yog heev loj heev, yog li cov crystallity hnyav tsis muaj qhov tseeb ntawm lub zog, elongation thiab lub zog ntawm PTFE cov khoom {}}}}
Qhov ntom ntawm PTFE yog li 2 {. 2g / sachy, tab sis lub kaum -que, tab sis cov degree. ptfe. nitrogen, thiab txo qis nrog kev ua kom ceev.
Lub zog tensile, elongation, loj hlob mapulus, harding, thiab txias} Voids hauv cov khoom lag luam, yog li txhim kho nws cov khoom siv dag zog}} ptfe muaj qhov laj thawj me me, yog tias yuav siv tau cov gaskets muaj qhov laj thawj
Lub hardness ntawm PTFE yog tsawg, tab sis nws tuaj yeem txhim kho los ntawm kev ntxiv fillers .
Qhov kev sib txhuam coefficient ntawm PTFE yog qhov tsawg tshaj plaws ntawm txhua cov khoom siv khov kho thiab muaj qhov tsis tshua muaj kev sib txhuam tau zoo li cov kabmob qis dua thiab muaj qhov tsis muaj txiaj ntsig thaum muaj kev tig ntawm qis Ceev .
Lub thermal conductivity ntawm PTFE yog tsawg, uas tuaj yeem ua kom muaj zog ntxiv los ntawm kev ntxiv hlau encing .
Lub ntsiab lus melting ntawm PTFE yog 327 degree, tshav kub deformation kub yog}}} ptfe muaj qhov siab tshaj plaws ntawm kev ruaj khov, thiab muaj kev cuam tshuam me me ntawm 204-327 degree, yog li tsis muaj cua sov stabilizer yuav tsum .
Tus txheeb ze cov roj av loj ntawm polytetrospaethylene yog qhov loj, feem ntau}}}}}}}} 327-342℃. The CF2 units in the polytetrafluoroethylene molecule are arranged in a zigzag shape. Since the radius of the fluorine atom is slightly larger than that of hydrogen, the adjacent CF2 units cannot be completely oriented in a trans-cross orientation, but form a spiral twisted chain, and the fluorine atoms almost cover the surface of Tag nrho cov pob zeb polymer {{}} Cov qauv qauv molecular piav qhia txog ntau yam khoom ntawm polytetraToroethylene.
2. Daim ntawv thov daim ntawv thov ntawm PTFE
PTFE muaj tshuaj lom neeg tshuaj tiv thaiv zoo tshaj plaws, yog li nws yog feem ntau siv hauv cov ntaub ntawv tiv thaiv xeb thiab muaj ntau cov ntawv thov; PTFE muaj cov hluav taws xob zoo heev, yog li nws tau siv los ua cov khoom siv insulating hauv kev lag luam hluav taws xob thiab hluav taws xob; PTFE muaj kev sib txhuam me me muaj cov khoom siv tsis zoo, yog li nws tau siv los ua cov khoom siv-resistant, cov xaim hauv cov tshuab kev lag luam eny6 2}}
PTFE tau siv dav hauv cov choj thiab cov tuam tsev ua cov khoom sib cais ua kom muaj roj av, nws tuaj yeem siv rau kev xaiv ua kua, nws tuaj yeem siv rau cov lim dej, thiab tseem siv tau los lim corrosive kua . Tsis tau siv dav hauv cov neeg kho mob tib neeg, thiab siv cov ntshav lim hiam, thiab cov khoom siv lub plawv, thiab lwm yam}
{{01. Daim ntawv thov ntawm PTFE hauv 5G teb
Lub FR4 Tooj-Caj Laminate feem ntau siv nyob rau hauv kev sib txuas lus epoxy resin siv cov khoom sib txuas lus epoxy, tab sis nws tsis haum rau kev sib txuas lus loj.
Cov kev tseev kom muaj rau cov tooj liab-clad laminates hauv 5G daim ntawv thov (microwave dIST
PolytetraTrene Resin tam sim no cov khoom siv hluav taws xob tsawg dua xws li 5g, PTFACE cov kev cai lij choj xws li, PTFACE, thiab kev lag luam tub rog, thiab tooj liab Laminates ua los ntawm nws yog hu ua High-zaus tooj liab-clad laminates .
Tsis tas li ntawd, PTFE tseem siv nyob rau hauv 5G daim teb los ua tib qho kev sib xyaw ua ke, RF coaxial cables, radar kav hlau txais xov, thiab lwm yam}
2.} Daim ntawv thov ntawm PTFE hauv hydrogen zog zog kev lag luam
Hauv kev thaj chaw ntawm Hydrogen lub zog, PTFE feem ntau yog siv rau kev sib khi ntawm alkaline electrolyzers, nrog rau kev txhim kho proton roj teeb hauv Power electrolysis {}}
Hauv alkaline electrolyzers, cov gaskets yog lub ntsiab lus tseem ceeb ntawm kev ntsuas cov gaskeator yog ib qho tseem ceeb rau kev ntsuas gaskets {}} Cov Ntaub Ntawv Alkalic Cov Khoom Siv Hluav Taws Xob tau txais cov roj hmab ntxiv rau hauv ib qho "Diaphragm GaskeTorozer Gaskezer Cov Gaskezer hauv Suav teb feem ntau yog PTFE hom txhaws gaskets . ptfe yog sau thiab hloov kho cov fiber ntau, alumina, thiab graphina, thiab graphina, thiab graphina, thiab supered rau cov frealing gaskets {}}
Nyob rau hauv cov roj hlwb thiab pem dej electrolysis, proton txauv cov tshuaj txhuam hniav rau cov khoom siv roj ntsha ua tau, siv EPTFE raws li cov khoom siv sib xyaw thiab perfluorosulfonic acid IDBRANE . Tshaj tawm cov me me ntawm cov me me (EPTFE)
Tam sim no, lub ntiaj teb EPTFE kev ua lag luam yog tswj hwm los ntawm ob peb lub tshuab lag luam xws li kev tshawb nrhiav hauv Tebchaws Asmeskas kev lag luam qis, thiab tsis suav rau kev faib ua feem loj ntawm cov kev lag luam siab kawg .
3. PTFE hloov kho tshuab
Polytetrafluoroethylene (rwb thaiv tsev zoo heev, tsis yog-cov tshuaj lom neeg, nws muaj lub peev xwm tiv thaiv fluorine zoo nkauj, nws muaj cov tshuaj tiv thaiv hniav roj carbon ntau thiab cov khoom siv hluav taws xob zoo tib yam, nws muaj cov tshuaj tiv thaiv hniav roj carbon ntau thiab cov khoom siv hluav taws xob zoo tib yam nkaus lub koob npe ntawm "huab tais ntawm plastics" . nws yog cov ntaub ntawv kho mob, PTFE tau ua ib qho ntawm cov ntaub ntawv nyiam los ntawm cov kws tshawb nrhiav {}}
Txawm li cas los xij, vim muaj qhov tsis txaus ntseeg ntawm PTFE xws li muaj kev nyuaj, yog li cov kws kho mob tau txais kev hloov pauv ntawm PTFE feem ntau yog txuas nrog lwm cov ntaub ntawv los them rau cov tsis xws luag ntawm PTFE nws tus kheej, feem ntau yog ua kom muaj kev hloov kho ntawm cov khoom siv sib xyaw, thaum ua kom haum rau cov teeb meem kev hloov kho tau ntawm cov teeb meem sib raug zoo.
1. kev hloov kho deg
PTFE muaj cov kev ua ub no tsawg heev thiab tsis muaj txiaj ntsig zoo nkauj ntawm PTHACH hloov kho tau tsuas yog siv cov khoom siv tshuaj tsw qab, tab sis kuj tseem siv tshuaj ntsuab tam sim no thiab tshuaj lom neeg}}} cov qauv no yog Txhawm rau tshem tawm cov roj fluoride cov roj ntsha thiab txuas rau cov pab pawg ua haujlwm ntawm kev txhim kho cov kev ua ub no ntawm cov khoom siv matrix {}}
Kev Hloov Kho Ntshav Cov Pob Tsuas rau Cov Qauv Nrog High-Zog Hluav Taws Xob, ua rau muaj cov qauv ntawm cov qauv, ua rau pom cov pa hluav taws xob, ua rau pom cov pab pawg dawb .} kev hloov kho ntawm cov khoom sib txawv tuaj yeem muab faib ua cov ntshav deposition thiab ntshav deposition thiab ntshav deposition and .
High-zog hluav taws xob tuaj yeem tsim hluav taws xob ua lag luam polymerization, acrialamide, acrialamide, txiv neej thiab styriation / txiv neej muaj anhydride los ua ib txheej ntawm grafted polymer uas yooj yim rau kev sib khi, ua kom muaj kev sib tw ptfe nyob rau hauv hluav taws xob thiab ntau dua}}}-60}} {}}} cyclotrons .
PTFE tuaj yeem kho tau nrog cov tshuaj kom txhim kho nws cov kev ua haujlwm ntawm cov tshuaj lom neeg muaj xws li sodium-naphtalurene daws teeb meem yog tau los ntawm kev sib npaug ntawm sodium thiab naphthalene nyob rau hauv cov neeg txawj ntse xws li TetrahyDrofuran thiab tom qab ntawd tsim ioncal dawb radicals, uas tom qab ntawd tsim ion pair nrog sodium thiab tso tawm ntau npaum li cas ntawm resonance lub zog; Tom qab ntawd naphthalal actions tau pauv mus rau PTFE, txheej txheej thiab cov carborine txheej xws li kev kho fluorine, uas txhim kho cov khoom sib txuas ntawm PTFE .
2. blending hloov kho
Lub ntsiab cai ntawm kev sib xyaw yog lub hauv paus ntsiab lus zoo li, yog li kev sib xyaw ua ke ntawm cov khoom siv uas ua rau muaj kev sib xyaw ua ke, Matrix khoom thiab ib tug muab tub lim rau txhawb lwm cov polymers {}}}}} esterylene sulfide (PEEK) {{3}
POB muaj kev sib nraus zoo nkauj thiab muaj kev nyuaj siab ntxiv rau PTFE thiab txhim kho cov pa taws nrog PTFE .
Tsis zoo li POB, PPS muaj cov coj zoo heev, kub tawm tsam {} nws tseem tuaj yeem siv nyob rau hauv lub peev xwm biet hydrot, siab siv tshuaj inertness, tsis muaj zog saum npoo thiab zoo Kev xaiv tus kheej rau nws tus kheej . Kev xaiv PPS nrog PTFE yog qhov kev xaiv ua kom zoo tshaj plaws ntawm cov txheej txheem hydrophobic {}}
Peek thiab PTFE yog ob qho tib si sib xyaw ua ke hauv cov khoom siv khoom siv rau hauv PTKE cov PTFE roj mieces thiab}} Npaj cov ptfe micropurer yog 5%, kev sib txhuam cov coefficient raug txo los ntawm 0 {{. 35 mus txog 0 . 3, thiab lub ntim hnav yog qhov tsawg. Cov khoom siv no tuaj yeem siv tsis tsuas yog nyob rau hauv lub tshuab tshuab, tab sis kuj nyob hauv kev kho mob teb.
Kev hloov kho tau yooj yim dua thiab kev ua tau zoo ntawm cov khoom siv sib xyaw ua ke, thiab cov khoom siv kub, thiab cov cua sov, thiab cov cua sov hauv PTFE ua rau nws tsis sib xws polymers . yuav tsum tau kho ua ntej kev hloov kho lossis qee cov txheej txheem kev hloov kho kom txhim kho compatibility {}}
3.} sau hloov kho
Filling hloov PTFE yog qhov yooj yim thiab siv tau cov roj carrers thiab cov khaub ncaws nyias muaj nyias thiab cov khaub ncaws hnav, tus hlau, thiab lwm yam.
Graphite yog ib qho khoom siv zoo roj
Molybdenum discenfide (Mos2) muaj kev sib txhuam qis dua graphite thiab muaj qhov sib txawv ntawm cov kev sib txawv (WS2) tsis yog qhov sib txawv Ob txoj kev sib txhuam ruaj khov thiab hnav tsis kam ntawm WS2} {} {} {} {} {} sib piv nrog cov tib ua ke.
Carbon fiber (CF) muaj cov qauv hluav taws xob muaj zog, ua kom muaj zog ntxiv rau cov roj carbon fiber ntau, ua kom muaj zog ntxiv nrog cov khoom siv hluav taws xob muaj zog thiab ua kom zoo dua qub coefficiecient .} fiber fiber yog inert kom tsim tau ob qho tib si acids ua rau kev tsim khoom lag luam xws li kev xav tsis meej {}}
GF yeej ib txwm tau favored nyob rau hauv kev tsim cov khoom sib tov sib tov ua ke ntawm rau nws lub zog siab, thiab yog qhov muaj txiaj ntsig ntau dua li cf hauv tshav puam polymer filling thiab hloov .
Poov tshuaj Titanate Whisker (PTW) muaj cov khoom siv hluav taws xob ntau dua li cov khoom siv sib xyaw ua ke, ob qho tib si ntxiv dag zog thiab ua kom tawv zuj zus thiab hloov pauv, hloov pauv yav dhau los tshwm sim ntawm kev txhim kho ib qho khoom thaum muaj lwm tus thaum muab cov tshuaj sib txuas thiab cov khoom siv hluav taws xob tsis zoo ntxiv rau kev txhim kho ntxiv {}}
PTFE tau sau nrog tooj dag, qhov sib txuas no tau zoo heev thermal thiab ua kom haum rau cov kev siv nrog cov khoom siv heev thiab kub .
IV . Cov ntsiab lus ntawm PTFE
PTFE muaj cov khoom siv zoo ntxiv thiab yog qhov ua tau zoo tshaj plaws hauv kev lag luam, yog li nws tau ua qhov kev hloov kho hauv khw PTFE, thiab tau ua kom pom cov txheej txheem moulding thiab kev hloov pauv PTFE thiab kev siv tshuab yog li, tseem muaj kev ua haujlwm loj {{4 4}}
