Dab tsi yog qhov tseem ceeb ntawm kev siv polyethylene zaj duab xis?
Polytetrafluoroethylene (Polytetrafluoroethene), feem ntau hu ua "non-stick txheej" lossis "cov khoom siv yooj yim-rau-huv"; yog cov khoom siv hluavtaws polymer uas siv fluorine los hloov tag nrho cov hydrogen atoms hauv polyethylene. Cov khoom no yog resistant rau acid thiab alkali, thiab ntau yam organic solvents, thiab yuav luag insoluble nyob rau hauv tag nrho cov kuab tshuaj. Nyob rau tib lub sijhawm, PTFE muaj cov yam ntxwv ntawm qhov kub thiab txias, thiab nws cov kev sib txhuam coefficient tsis tshua muaj siab, yog li nws tuaj yeem siv rau lubrication, thiab nws kuj tau dhau los ua cov txheej txheem zoo tshaj plaws rau cov txheej txheej sab hauv uas yooj yim-rau-huv woks thiab cov kav dej.
Cov yeeb yaj kiab yog ua los ntawm kev tshem tawm polytetrafluoroethylene resin los ntawm molding, sintering, txias los ua ib qho khoob, thiab tom qab ntawd tig thiab calendering. Cov yeeb yaj kiab tsim los ntawm kev tig yog cov yeeb yaj kiab uas tsis yog kev taw qhia, thiab cov yeeb yaj kiab uas tsis yog taw qhia yuav ua rau cov yeeb yaj kiab taw qhia tom qab calendering. Cov yeeb yaj kiab uas tsis yog kev taw qhia yog dov 1.1-1.8 zaug los ua ib zaj yeeb yaj kiab ib nrab. PTFE zaj duab xis yog siv los ua capacitor nruab nrab, raws li cov rwb thaiv tsev hlau, hluav taws xob ntsuas hluav taws xob, thiab sealing gasket. PTFE zaj duab xis muab faib ua PTFE xim zaj duab xis, PTFE activated zaj duab xis thiab F46 zaj duab xis.
Kev ua tau zoo ntawm PTFE zaj duab xis
1. Kev kub siab ua haujlwm: qhov ua haujlwm kub tuaj yeem ncav cuag 250 degree.
2. Tsis tshua muaj kub tsis kam: Nws muaj zoo mechanical toughness; Txawm hais tias qhov kub thiab txias poob mus rau -196 degree, nws tuaj yeem tswj tau qhov elongation ntawm 5 feem pua.
3. Corrosion resistance: Nws yog inert rau feem ntau cov tshuaj thiab cov kuab tshuaj, thiab tuaj yeem tiv taus cov kua qaub thiab alkalis, dej thiab ntau yam kuab tshuaj organic.
4. Huab cua tsis kam: Nws muaj lub neej kev laus zoo tshaj plaws ntawm cov yas.
5. High lubrication: Nws yog ib qho kev sib txhuam coefficient qis tshaj ntawm cov khoom siv.
6. Tsis-adhesion: Nws yog qhov tsawg tshaj plaws ntawm qhov nro ntawm cov khoom siv thiab tsis ua raws li cov khoom siv.
7. Tsis muaj tshuaj lom: Nws yog physiologically inert thiab tsis muaj kev phiv tshwm sim thaum implanted raws li cov hlab ntsha thiab lub cev rau lub sij hawm ntev.
8. Hluav taws xob rwb thaiv tsev: tuaj yeem tiv taus 1500 volts ntawm high voltage.
Cov khoom tshwj xeeb ntawm polytetrafluoroethylene zaj duab xis (PTFE) ua rau nws siv dav hauv kev lag luam thiab kev lag luam marine xws li kev lag luam chemical, roj av, textile, zaub mov, papermaking, tshuaj, electronics thiab machinery. Piv txwv li:
1. Daim ntawv thov hauv hluav taws xob thiab hluav taws xob
Qhov poob qis thiab me me dielectric tas li ntawm polytetrafluoroethylene zaj duab xis (PTFE) cov ntaub ntawv ua rau nws muaj peev xwm ua enameled xov hlau rau micro motors, thermocouples, tswj cov cuab yeej, capacitors, xov tooj cua rwb thaiv tsev gaskets, insulated cables, motors thiab transformers Etc.; Kev siv cov yam ntxwv ntawm fluoroplastics nyob rau hauv qhov kub thiab txias siab los tsim cov ntsiab lus sib txawv ntawm tus ncej, microphones, hais lus, qhov chaw ntawm cov neeg hlau, thiab lwm yam tuaj yeem tsim tau; siv nws cov yam ntxwv qis refractive index, optical fibers tuaj yeem tsim.
2. Daim ntawv thov kev tiv thaiv corrosion
Polytetrafluoroethylene zaj duab xis (PTFE) cov ntaub ntawv tau dhau los ua cov khoom tseem ceeb corrosion-resistant nyob rau hauv roj av, tshuaj, textile thiab lwm yam lag luam vim nws zoo heev corrosion kuj. Nws cov ntawv thov tshwj xeeb suav nrog: cov kav xa dej, cov kav dej tso tawm, cov kav dej rau kev xa cov corrosive gases, cov kav dej kub siab rau dov mills, siab, nruab nrab thiab qis-siab kav rau hydraulic systems thiab txias pressing systems, rectification towers, heat exchangers, kettles. , towers, thiab tanks Linings, li qub thiab lwm yam khoom siv tshuaj.
3. Daim ntawv thov ntawm kev sib txhuam qis hauv kev thauj khoom
Vim tias cov coefficient ntawm kev sib txhuam ntawm PTFE zaj duab xis yog qhov qis tshaj ntawm cov ntaub ntawv paub zoo. Nws cov kev siv tshwj xeeb muaj xws li bearings rau cov khoom siv tshuaj, papermaking machinery, thiab cov tshuab ua liaj ua teb, xws li piston rings, machine tool guide rails, thiab guide rings; nyob rau hauv civil engineering engineering, nws yog dav siv los ua ib tug bearing rau txuas hniav, tunnels, steel qauv ru tsev trusses, loj chemical pipelines, thiab cia tso tsheb hlau luam. Txhawb nqa sliders, thiab siv los ua choj bearings thiab bridging swivels, thiab lwm yam.
4. Kev siv tshuaj kho mob
Cov khoom nthuav dav polytetrafluoroethylene zaj duab xis (PTFE) cov khoom siv yog cov tsis muaj zog, muaj zog lom neeg yoog raws, yuav tsis ua rau lub cev tsis zoo, tsis muaj kev phiv ntawm tib neeg lub cev, tuaj yeem ua kom tsis muaj menyuam los ntawm txhua txoj kev, thiab muaj cov qauv microporous, yog li Nws tuaj yeem siv rau hauv ntau yam kev daws teeb meem nrog rau cov hlab ntsha thiab thaj ua rau thaj rau cov ntaub so ntswg rov tsim dua tshiab thiab phais phais rau vascular, plawv, phais dav dav thiab phais yas.
5. Daim ntawv thov ntawm cov khoom tiv thaiv nplaum
Polytetrafluoroethylene zaj duab xis (PTFE) cov ntaub ntawv muaj qhov tsawg tshaj plaws ntawm qhov nro ntawm cov khoom siv, tsis ua raws li cov khoom siv, thiab kuj muaj qhov kub thiab txias tsis kam, yog li nws yog qhov tsim nyog rau cov ntawv thov xws li kev tiv thaiv kev tiv thaiv hauv kev tsim cov khoom siv tsis zoo. - stick pans. dav. Cov txheej txheem los tiv thaiv cov nplaum feem ntau suav nrog ob hom: txhim kho PTFE qhov chaw lossis cov nplooj ntawv ntawm lub substrate, thiab npog lub substrate nrog PTFE txheej los yog kua roj vanish composited nrog iav los ntawm tshav kub shrinkage.
Nrog rau kev txhim kho txuas ntxiv ntawm cov khoom siv thev naus laus zis, peb qhov tsis txaus ntawm polytetrafluoroethylene zaj duab xis (PTFE) cov ntaub ntawv: txias txaus, vuam nyuaj, thiab cov txheej txheem melting nyuaj tau maj mam kov yeej, yog li nws siv hauv optics, electronics, tshuaj, daim ntawv thov kev cia siab nyob rau hauv ntau yam xws li petrochemical roj tsheb thauj mus los los tiv thaiv seepage yog dav.
