Sau PTFE Properties

Cov qhab nia ntawm PTFE tuaj yeem muab sib xyaw & kho kom haum rau cov kev pabcuam tshwj xeeb & kev siv.PTFE puvCov qib muaj cov khoom tshwj xeeb txhim kho raws li qhov muab tub lim, hom muab tub lim & feem pua ​​​​ntawm cov muab tub lim.

Mechanical zog

Lub compressive creep cwj pwm ntawm PTFE puv yog ib qho ntawm cov khoom tseem ceeb tshaj plaws rau tus tsim thiab cov neeg siv.

Nyob rau hauv kev sib piv nrog unfilled PTFE lub compressive modulus ntawm PTFE puv yog ntau dua thiab li no, rau tib qhov kev nyuaj siab, ib tug qis deformation yuav tshwm sim.Qhov sib txawv no txo ​​qis, txawm li cas los xij, raws li qhov kub thiab txias thiab kev ua haujlwm ntawm cov khoom tsis ua tiav thiab ua tiav PTFE kos ze ua ke ntawm 200 ° C (392 ° F).Yog vim li cas yuav luag txhua qhov kev txo qis hauv compressive modulus ntawm PTFE matrix overrides cov kev txhawb nqa muab los ntawm random faib ntawm cov khoom muab tub lim.

Cov khoom hluav taws xob

Qhov sib ntxiv ntawm cov fillers tseem muaj cov txiaj ntsig zoo ntawm cov khoom siv hluav taws xob zoo ib yam.Tshwj xeeb, graphite - thiab cov pa roj carbon monoxide yuav muaj cov khoom siv hluav taws xob zoo, uas tuaj yeem pab cuam tshuam cov nqi zoo li qub hauv cov ntawv thov uas cov teeb meem no.

Filled PTFE yog ib qho sib xyaw ntawm cov ntaub ntawv, thiab cov voids - txawm tias me me - yeej ib txwm muaj: raws li nrog rau tag nrho cov ntaub ntawv ntxeem tau, cov khoom yog nyob ntawm qhov xwm ntawm ib puag ncig thiab ntawm ib qho kev tsis sib haum xeeb.Cov khoom siv hluav taws xob tsis muaj qhov tshwj xeeb thiab muaj kev vam meej nyob ntawm ib puag ncig cov av noo.

Thermal khoom

Lub thermal expansion ntawm feem ntau cov fillers yog tsawg tshaj li ntawm PTFE thiab txij li thaum lub expansion ntawm lub composite yuav nyob rau hauv qhov chaw ntawm ob tug constituents, sau PTFE tebchaw nthuav tsawg tshaj unfilled PTFE.Thaum lub sij hawm tsim ib co fillers, tshwj xeeb tshaj yog fibers thiab platelets, ua qhov nyiam oriented (raws li ua cov khoom ntawm PTFE mus rau qib qis dua).Qhov tshwm sim yog tias qee cov tebchaw muaj qhov sib txawv loj heev nyob rau hauv cov lus qhia thaum uas tig mus thiab perpendicular rau cov kev taw qhia ntawm molding.

Lub thermal conductivity ntawm PTFE yog tsawg heev, ua rau nws ib tug zoo thermal insulating khoom.Ntau cov khoom ntim khoom, tshwj xeeb yog cov hlau thiab hlau oxides, muaj cov thermal conductivity siab, tab sis feem ntau lawv tau zoo encapsulated los ntawm PTFE kom cov conductivity ntawm cov tebchaw tseem tsawg.