PTFE, tseem hu ua Teflon, yog ib yam khoom uas tsis yog -cov khoom siv feem ntau siv hauv cookware thiab khaub ncaws tiv thaiv. Cov khoom siv ntau yam no kuj muaj ntau yam kev siv hauv kev lag luam. Piv txwv li, PTFE yog dav siv nyob rau hauv aerospace, khoom noj khoom haus thiab dej haus manufacturing, kws, thiab kev sib txuas lus.
Pure PTFE yog cov khoom siv sib txhuam qis uas tuaj yeem tiv taus qhov kub thiab txias, ua rau nws zoo tagnrho rau kev tsim khoom tsis yog- stick cookware. PTFE muaj qhov yooj yim heev thiab ceev, yog li txheej txheej tshuab nrog PTFE txheej tuaj yeem txhim kho lawv cov kav ntev. PTFE yog tshuaj lom neeg ruaj khov heev, insoluble nyob rau hauv feem ntau cov tshuaj, thiab tsis yog - tshuaj lom, muab nws zoo nyob rau hauv lub chaw soj nstuam, kev kho mob (xws li, raws li ib tug catheter txheej), thiab zaub mov kev lag luam. Hauv cov ntsiab lus, cov khoom no ua rau PTFE yog cov khoom siv ntau yam siv hauv yuav luag txhua qhov kev lag luam.
Vim nws qhov kev hloov pauv siab, PTFE yog qhov yooj yim rau nkag thiab deformation nyob rau hauv hnyav loads. Ntxiv cov fillers tuaj yeem kov yeej qhov teeb meem no, yog li sib txuas cov khoom zoo ntawm ob qho tib si. Fillers kuj tseem tuaj yeem txhim kho thermal conductivity, ua rau lawv tshwj xeeb tshaj yog haum rau cov ntawv thov kom muaj cua sov zoo. Feem ntau siv muab tub lim yog iav, tab sis lwm cov ntaub ntawv muaj qhov zoo tshwj xeeb hauv qee daim ntawv thov. Cov khoom siv ntxiv no suav nrog carbon, graphite, stainless hlau, molybdenum disulfide, bronze, thiab polyimide.
1. iav Fiber Reinforced PTFE
Ntxiv cov iav fiber ntau rau polytetrafluoroethylene (PTFE) txhim kho nws lub zog thiab kav ntev thaum txo nws txoj kev yooj yim thiab nkag siab. Iav fiber reinforced PTFE ua haujlwm nyob rau hauv tib qhov kub thiab txias li PTFE ntshiab thiab nthuav tawm cov tshuaj zoo sib xws.
Fluorotec muaj cov iav fiber reinforced PTFE nrog cov iav fiber ntau ntawm 5% mus rau 60%. Ua kom cov iav fiber ntau cov ntsiab lus txhim kho nws cov durability thiab compressive zog. Tsis tas li ntawd, iav fiber reinforced PTFE tuaj yeem sintered nyob rau hauv ib qho inert roj cua. Qhov no ntxiv txo cov khoom nkag siab thiab porosity. Iav fiber reinforced PTFE yog abrasive ntau dua li PTFE ntshiab, txhais tau tias nws tuaj yeem ua rau hnav ntawm qhov chaw nyob ib sab.
2. Carbon- puv PTFE
Cov pa roj carbon- puv PTFE muaj zog dua compressive, qis deformation nyob rau hauv hnyav loads, thiab superior puas kuj piv rau cov ntshiab PTFE. Vim yog carbon cov hluav taws xob conductivity, nws yog haum rau daim ntaub ntawv uas yuav tsum tau thermal conductivity ntau dua li ntshiab PTFE, thiab kuj muab electrostatic dissipation peev xwm. Cov pa roj carbon tuaj yeem muab ntxiv rau hauv cov hmoov lossis fiber ntau. Nws yuav muaj qee qhov abrasiveness, tab sis tsis muaj zog li iav.
3. Graphite- puv PTFE
Graphite- puv PTFE qhia qee qhov zoo nrog cov pa roj carbon zoo tib yam- puv PTFE (CF), tab sis nws qhov kev puas tsuaj tsis zoo tuaj. Graphite txo cov coefficient ntawm kev sib txhuam, thiab graphite - puv PTFE nthuav tawm nws tus kheej zoo heev -lubricating zog. Nws tuaj yeem siv nrog cov pa roj carbon lossis iav, lossis txawm tias sib xyaw ntawm ob qho tib si, kom ua tiav cov txiaj ntsig ua ke ntawm tag nrho peb cov fillers.
4. Stainless hlau - puv PTFE
Ntxiv cov hmoov tsis muaj hlau tsis muaj zog ua kom lub zog thiab thauj khoom -cov kabmob muaj peev xwm ntawm PTFE. Nws ua tau zoo heev ntawm qhov kub thiab txias, ua stainless hlau- puv PTFE zoo tagnrho rau chav dej thiab cov kua dej kub. Hom PTFE no haum rau ntau yam kev siv tshuab thiab tuaj yeem siv rau hauv kev lag luam zaub mov thiab dej haus. Nws qhov kev puas tsuaj loj heev, uas tuaj yeem ua rau hnav ntawm qhov chaw nyob ib sab, yuav tsum xav txog.
5. Molybdenum Disulfide (MoS2) Sau PTFE
Molybdenum disulfide (MoS2) feem ntau yog siv ua ke nrog cov iav los yog tooj liab ua cov muab tub lim rau PTFE, uas ua rau cov khoom siv tawv thiab tawv. MoS2 kuj tseem txhim kho cov khoom siv lub zog thiab kev puas tsuaj. Cov khoom ua tau zoo yog zoo - haum rau cov ntsaws ruaj ruaj.
6. Bronze Sau PTFE
Yog tias daim ntawv thov yuav tsum tau ua kom zoo thermal thiab hluav taws xob conductivity, ces bronze - puv PTFE tej zaum yuav zoo tagnrho. Ntxiv bronze rau PTFE kuj tseem txhim kho nws qhov kev puas tsuaj. Txawm li cas los xij, bronze txo PTFE qhov tsis yog -stick thiab tshuaj inertness; cov khoom no yuav tsum tau txiav txim siab txog lawv qhov tseem ceeb hauv koj daim ntawv thov tshwj xeeb. Lwm cov hlau, xws li titanium, npib tsib xee, lossis stainless hlau, kuj tseem raug xaiv los ua cov khoom ntim vim lawv cov khoom tshwj xeeb.
7. Polyimide-Pov PTFE
Polyimides yog ib chav kawm ntawm hluavtaws polymers. Ntxiv polyimides tuaj yeem tsim PTFE nrog qis coefficient ntawm kev sib txhuam dua li tag nrho cov ntsiab lus ntawm PTFE. Nws tsis yog -abrasive, ua rau nws zoo tagnrho rau mating nrog softer nto xws li hlau, txhuas, los yog lwm yam yas. Yog li ntawd, polyimide- puv PTFE yog tshwj xeeb tshaj yog haum rau qhuav- khiav thiab nquag pib- nres daim ntawv thov. Txawm li cas los xij, polyimide yog qhov kim tshaj plaws ntawm tag nrho cov PTFE muab tub lim.
Hauv cov ntsiab lus, sau PTFE los ntawm ntau hom, txhua tus muaj qhov zoo. Pure PTFE yog cov khoom siv ntau yam thiab muaj txiaj ntsig zoo hauv nws tus kheej, thiab nws cov khoom tuaj yeem txhim kho ntxiv thiab kho tau los ntawm kev ntxiv ntau yam khoom siv.
