Polytetrafluoroethylene kana PTFE (inonyanya kuzivikanwa sepolymer) inonyanya kushandiswa zvakasiyana-siyana yenyanga dzenzou-chena uye opaque plastiki fluoropolymer;inogadzirwa ne-free-radical polymerization yemamorekuru akawanda etetrafluoroethene, uye inokodzera kuwanda kwekushandisa mumaindasitiri akasiyana seaerospace, indasitiri yezvekudya nezvinwiwa, mishonga uye telecoms.
Yakagadzirwa neAFT Fluorotec mumatanda kana machubhu emhando ipi neipi, kana yakazadzwa negirazi, kabhoni, simbi isina tsvina kana zvimwe zvinhu zvakawanda kuti uwedzere kupfeka kuramba uye simba, chero chirongwa chako kana kuvaka, isu tine chokwadi chekuva nechinhu chinokushandira iwe. .
ZVINHU ZVIKURU ZVINHU ZVINHU ZVINHU PEPTFEKana uri kuedza kugadzira chinhu chinochinjika zvikuru, chisingachinjikekemikari, chinoshingirira kupisa, chisingabatiki uye chinoshingirira pamagetsi, uye zvanga zvisati zvatoitwa, unenge uchitarisira kuti unokwanisa kuwana chinhu pane imwe nzvimbo. yakada kuita sePTFE iri munzvimbo idzi.
PTFE's melting point is around 327°C, uye pure PTFE inenge yakazara zvachose inert inert, isinganyunguriki muzhinji zvinonyungudutsa kana kemikari, uye inogadzikana mumhepo zvokuti inogona kushandiswa pakati -200 madhigirii C uye +260 madhigirii C pasina kushatisa.
Zvimwe zvinobatsira zvePTFE zvimiro isimba rayo repamusoro-soro, kunyangwe mukudziya kwakadzikira, kusimba kwemagetsi uye simba re dielectric, kuramba kumvura (zvichida fluorine's high electronegativity), uye yakaderera coefficient of friction.PTFE's density zvakare yakakwira zvakanyanya, pa2200 kg/m3.
Muchokwadi, kunze kwekuita kune mamwe makemikari ejenti uye zvinonyungudutsa (semuenzaniso, chlorine trifluoride, cobalt(III) fluoride, xenon difluoride kana yekutanga fluorine kana paine yakanyanya kumanikidza uye tembiricha), chinhu chega chinofanira kutariswa kana uchishandisa PTFE ndeye. kuti haina kumira zvakanaka kune yakakwirira simba mwaranzi, izvo zvinokonzeresa kuparara kwePTFE molecule.
AKAMODHIWA PTFE PROPERTIESIPamusoro pePTFE chaiyo, pane maviri mapolymer anobatsira zvakaenzana sePTFE, asi aine zvimwe zvakasiyana.
PFA kana Perfluoroalkoxy ine zvimiro zvakada kufanana nePTFE mukuti inoshingirira kumakemikari, inoshanduka uye yakagadzikana mumhepo (ichiramba ichishandiswa kusvika ku260 degrees C), asi nepo PTFE iine katsika kekukambaira, PFA inoshingirira uye yakanakira. melt-processing, kuumba jekiseni, extrusion, compression moulding, blowing moulding, uye kutamisa kuumbwa.
TFM, inozivikanwa sePTFE-TFM, inonzi polytetrafluoroethylene ine perfluoropropylvinylether seimwe modhifita, ichipa denser material iyo yakaoma, zvakare inokambaira isingaite sePFA, uye inobatika.AKAZADZWA PTFEPure kana mhandara PTFE inogona kukanganisa zvakashata pasi pemutoro, asi kushandiswa kwekuzadza kunogona kubatsira neizvi, kunyange zvinofanira kuonekwa kuti haisi yose yakazadzwa PTFE yakakodzera kushandiswa nechikafu.
Kuwedzera kuzadza kune PTFE kunogona kuwedzera simba rayo, kunatsiridza kuramba kune abrasion, kuwedzera magetsi conductivity nezvimwe;zvisinei, kuwedzera mafirita kunogonawo kuderedza zvimwe zvinobatsira zvePTFE zvivakwa, senge makemikari kuramba ayo anozoganhurwa neayo ekuzadza.
Mafirita anoshandiswa anogona kubva pagirazi muzvikamu zvakasiyana, simbi isina tsvina, molybdenum disulphide, kabhoni kana graphite, zvichienderana nekuti zvivakwa zvipi zvinofanirwa kuvandudzwa.
ZVINOBATSIRA UYE ZVINOBATSIRA ZVEKUSHANDISA PTFEMukana mukuru wePTFE ndeyekusiyana-siyana kwayo, uye huwandu hwemashandisirwo pamusoro pezvigadzirwa zvakawanda uye maindasitiri akasiyana echinhu ichi anoshamisa.
Iko kushandiswa kwePTFE kunogona kuve nemabhenefiti akakura mukugadzira uye engineering, kwete mukugadzira machubhu kana marani ekubata kana kuchengetedza makemikari anoparadza, asi nekupfekedza zvikamu zvakaita semabheya kana screws kuti uwedzere hupenyu hwezvose zvikamu pachazvo nemichina yavari. chikamu che.
Iyo PTFE-yakavharwa screw inoshingirira mukuora, nekuda kwekugona kwePTFE kudzinga mvura neoiri, uye inozorwa nezvinhu kuti zvinyatso kutyaira mune chero nzvimbo yauri kusungirira kwairi, nekudzikira kukweshana, zvichikonzera kupera kushoma pane ese screw uye. pamusoro, uye inogara-yakareba, yakachengeteka zvakanyanya kupera.
Kukarukana uye kupfeka zvinogonawo kuva zvinhu zvine mabearings, uye PTFE jasi rinogona kupa mabhenefiti akafanana neaya ekuputira screws, aine mukana wekuwedzera wekuti iyo coating inodzivirira kupisa.
Zviripachena kuti zvinogara kwenguva refu, zvikamu zvepamusoro-soro zvinogona kuwedzera kushanda kwechero muchina, kuderedza kudiwa kwekugara uchiwana zvinotsiva, zvese kuchengetedza mari uye nguva inodiwa kuti ikwane zvinotsiva, pamwe nekudzikisa tsvina.Izvi zvichaderedzawo zvinodiwa zvekuchengetedza sezvo pane zvishoma zvingave zvikanganiso nemidziyo, uye zvakare kuderedza zvakanyanya, kana kutobvisa, chero inodhura yekugadzira inodhura nguva nekuda kwekukanganisa kana kugadzirisa.
Kucheneswa kwemichina kunogonawo kudzikiswa mune dzimwe nguva sezvo jasi rePTFE risinganyorovese, richifambisa kuzvichenesa kwezvikamu.
Uye kupera kwe polymer textile kunogona kubatsira nharaunda, nekuti, kana ikaiswa mucheka, kupera kunodzinga mavara emvura neoiri, kuderedza kudiwa kwekushandisa kuchenesa kwakaoma, uye machira achaomawo nekukurumidza, achishandisa simba shoma nekuomeswa nekudonha, uye kugara kwenguva refu nekuda kwekuderera kwekupfeka.
Nezvakawedzerwa zvakanakira kuti PTFE haina chepfu, inongo pikisa diki kuvanhu kubva kufivha yepolymer (chete kana tembiricha yechero pani yakavharwa nepolymer inosvika 260 madhigirii C) uye yakatenderwa neFDA uye haina kuchengetedzwa kwechikafu, chinyorwa ichi chaicho. inobatsira zvikuru munzvimbo dzakawanda dzakasiyana.ZVINOFADZA MASHANDISI EPTFEA pamwe nekunamira zvinhu zvese kubva papani kusvika pamabearings, PTFE inoshandiswawo kumisa zvipembenene kukwira madziro sezvo zvinhu zvacho zviri 'zvisina tsvimbo' zvekuti tumbuyu (uye kunyangwe geckos) haakwanise kubata. Iyo polymer inoshandiswa kakawanda se chivharo pamakatheta kuvharidzira mabhakitiriya uye hutachiona uye chinoshandiswawo sechinhu chegraft mukuvhiya.
Iwe unenge wanzwa nezve Gore-Tex, uye ndeye PTFE zvakare, panguva ino senge yakatetepa, ine porous membrane kugadzira inofema mvura inonaya, kana yezvekurapa anodyara, wiring insulation uye sealants.
Tichifunga kuti PTFE yakawanikwa netsaona inofadza muna 1938, zvakaoma kufungidzira nyika yedu nhasi pasina iyo.
Kana muchifarira kushandisa PTFE kune chero mapurojekiti enyu, kana muchida kuziva rumwe ruzivo nezvezvivakwa zvePTFE, ndapota taurai nesu uye tinogona kufara kutaura newe kuburikidza nesarudzo dzako.
Nguva yekutumira: May-30-2020