PTFE xov kab xev tuaj yeem tiv taus qhov kub ntawm -450 degree F mus rau +500 degree F (-268 degree rau +260 degree ). PTFE nws tus kheej muaj qhov siab melting point ntawm ib ncig ntawm +327 degree, tab sis nws pib deteriorate ntawm kub ntawm +200 degree thiab +260 degree . PTFE decomposes saum 350 degree (662 degree F) thiab undergoes pyrolysis saum 400 degree (752 degree F).
PTFE resin yog ib lub polymer tsim los ntawm kev rov ua dua tetrafluoroethylene monomers nrog cov mis molecular (CF2-CF2)n. Nws yog inert thiab sib xws nrog ntau yam khoom siv. Siv Blue Monster ntawm cov xov ua los ntawm galvanized steel, hlau, tooj dag, tooj liab, txhuas, stainless hlau, polyethylene, polypropylene, PVC, CPVC, ABS, fiberglass thiab lwm yam. Nws tuaj yeem siv nrog cov kav dej nqa:
● Concentrated acid thiab dilute acid
● Dej cawv, roj av cawv
●Aliphatic solvents, aromatic solvents, chlorinated solvents
● kua ammonia
● Concentrated caustic alkali
● Compressed cua, chav, dej
● Txiav roj
● diesel roj roj
● Ethylene glycol, glycerin
● fatty acid
● Cua sov roj, kerosene
●Hydraulic roj, hydraulic roj
●Hydrogen, gaseous thiab kua, Inert gases, gaseous thiab kua
● dav hlau roj
● Ketones, roj av kuab tshuaj
● Liquefied petroleum gas, natural gas
● Mineral roj, zaub roj
● Nitrogen, gaseous thiab kua
● xab npum, kua
Nco tseg: Khaws Mill-Rose Blue Monster Thread Sealing Daim kab xev kom huv si. Muab cov clip tso rau ntawm lub spool rov qab rau hauv qhov chaw tom qab siv. Khaws rau hauv qhov chaw huv. PTFE yog tshuaj tiv thaiv zoo rau txhua qhov kev tshaj tawm, nrog rau qee qhov kev zam. Alkali hlau xws li cov ntsiab lus sodium, potassium thiab lithium yuav tsum raug zam. Cov hlau alkali no tshem tawm fluorine los ntawm polymer molecules. PTFE tuaj yeem ua cov tshuaj oxidizing muaj zog heev xws li fluorine (F2) thiab lwm yam tshuaj xws li chlorine trifluoride (CIF3), tab sis yuav tsum tau saib xyuas zoo. Txij li thaum cov tshuaj fluorine yog absorbed rau hauv cov resin, cov sib tov ua rhiab heev rau qhov hluav taws kub, xws li 80% NaOH los yog KOH, hlau hydrides xws li borane (xws li B2H6), txhuas chloride, ammonia (NH3), Tej yam amines (R-NH2), imines (R-NH) thiab 70%. Siv nitric acid ntawm qhov kub thiab txias ze rau qhov pom zoo saib xyuas qib.
Hom PTFE daim kab xev
Keeb kwm, PTFE daim kab xev yog tsim nyob rau hauv tib xim; uas yog dawb. Vim qhov kev thov loj heev hauv kev lag luam yeeb nkab, cov tuam ntxhab kuj pib tsim cov kav dej hauv lwm cov xim. Muaj rau hom PTFE daim kab xev raws li daim kab xev xim, kev ua haujlwm thiab qhov ntom ntom. Cov khoom no txawv rau txhua hom kab xev thiab peb yuav tham txog lawv ntawm no.
Dawb PTFE
Dawb PTFE daim kab xev yog ib daim kab xev ntom ntom rau siv nrog 3/8 nti NPT threads nkaus xwb, tab sis kuj tseem tuaj yeem siv rau hauv cov dej tsis tshua muaj kev siv dej xws li vaj hoses, faucets, kev sib txuas roj, thiab lwm yam.
daim kab xev daj
Daim kab xev daj yog dual ntom thiab tuaj yeem siv rau ntawm cov khoom siv roj ntsha lossis cov khoom siv propane / butane. Nws yog hom roj av vim nws tuaj yeem ua kom nruj thiab xoob txhua lub sijhawm yam tsis tau poob nws lub foob.
Liab PTFE
Liab PTFE daim kab xev yog triple ntom daim kab xev. Daim kab xev ntim yog xim liab, tab sis xim ntawm daim kab xev nws tus kheej yog lub teeb liab. Nws yog haum rau tag nrho cov pob qij txha ½ txoj kab uas hla los yog loj dua. Nws kuj tseem tsim nyog rau cov kav dej hauv tsev siab, nrog kev ua haujlwm zoo ntawm 190 degree F thiab lub siab ntawm 150 psi.
Ntsuab PTFE daim kab xev
Green PTFE daim kab xev yog cov roj-dawb daim kab xev siv rau cov kav dej thauj cov pa oxygen, xws li kev kho mob oxygen cylinder pipelines los yog oxygen vuam pipelines.
Copper-xim PTFE daim kab xev
Copper-coloured PTFE daim kab xev yog siv los ua cov xov lubricant es tsis yog xov sealant thiab kuj muaj cov tooj liab. Nws yog siv los ua cov xov roj nplua nyeem rau cov kav dej thiab cov bolts uas yuav tsum tau siv tshuab thiab tsis tas yuav tsum muaj lub cev sib khi.
Silver PTFE daim kab xev
Silver PTFE daim kab xev muaj cov hauv av los yog impregnated nickel hais. Impregnated npib tsib xee granules zoo dua cov hmoov npib tsib xee. Nws tuaj yeem siv ua ob qho tib si sealant thiab lubricant. Nws yog tsim los tiv thaiv kev khi thaum siv stainless hlau, tooj dag thiab txhuas threaded kev sib txuas thiab tiv thaiv galling thaum siv stainless hlau. PTFE tau txais kev pom zoo raws li xov sealant tsuas yog thaum siv kom raug.
