I-Polytetrafluoroethylene (PTFE) yi-fluoropolymer e-semi-crystalline. I-PTFE yaziwa kakhulu ngokusetyenziswa kwayo njengengubo enganamatheliyo kwiimbiza zasekhitshini nakwiipani ngenxa yokumelana kwayo nobushushu nokugqwala.
Yintoni iI-PTFE?
Masiqale uphando lwethu lokuba yintoni kanye kanye iPTFE. Ukuze siyinike igama layo elipheleleyo, ipolytetrafluoroethylene yipolymer eyenziweyo equlathe izinto ezimbini ezilula; ikhabhoni kunye nefluorine. Ivela kwi-tetrafluoroethylene (TFE) kwaye ineempawu ezikhethekileyo ezenza ukuba ibe yinto eluncedo kwiindlela ezahlukeneyo zokusebenza. Umzekelo:
Iqondo lokunyibilika eliphezulu kakhulu: Xa iqondo lokunyibilika limalunga nama-327°C, zimbalwa kakhulu iimeko apho i-PTFE yonakaliswa bubushushu.
Ukungathandi amanzi: Ukumelana kwayo namanzi kuthetha ukuba ayimanzi, nto leyo eyenza ukuba ibe luncedo ekuphekeni, ekufakeni amanxeba nakwezinye izinto.
Ayisebenzi ngokweekhemikhali: Uninzi lwezinyibilikisi kunye neekhemikhali aziyi konakalisa i-PTFE.
I-coefficient ephantsi yokungqubana: I-coefficient yokungqubana kwe-PTFE yenye yezona ziphantsi kakhulu kuzo naziphi na izinto eziqinileyo ezikhoyo, oko kuthetha ukuba akukho nto iya kunamathela kuyo.
Amandla aphezulu okugoba: Ukukwazi kwayo ukugoba nokugoba, nokuba kubushushu obuphantsi, kuthetha ukuba ingasetyenziswa ngokulula kwiindawo ezahlukeneyo ngaphandle kokulahlekelwa bubuhle bayo.
Ukucwangciswa kwe-PTFE
I-PTFE inokufumaneka kwiifom ze-granular, dispersion kunye ne-fine powder. I-semi-crystalline PTFE inobushushu obuphezulu bokunyibilika kunye ne-melt viscosity, nto leyo eyenza ukuba i-extrusion eqhelekileyo kunye ne-injection molding zibe nzima. Ngoko ke, ukusetyenzwa kwe-PTFE kufana kakhulu nokusetyenzwa kwe-powder kuneeplastiki zemveli.
I-PTFE eneziqhoboshi iveliswa kwi-reaction ye-polymerisation esekwe emanzini. I-resin eneziqhoboshi ephumayo idla ngokucutshungulwa ibe yimo ngokusebenzisa i-compression molding. Iimveliso ze-PTFE dispersion zenziwa ngendlela efanayo, kunye nee-agents zokusasaza ezongeziweyo. Iimveliso ze-dispersion zingasetyenziselwa ii-PTFE coatings okanye zingacutshungulwa zibe yifilimu encinci ngokufaka ifilimu. I-PTFE powder iveliswa kwi-emulsion polymerisation reaction. I-fine powder ephumayo inokuncamathiselwa kwiiteyiphu ze-PTFE, iityhubhu ze-PTFE, kunye ne-wire insulation, okanye isetyenziswe njengesongezelelo sokwandisa ukumelana nokugqwala kwezinye izinto ze-polymeric.
Ii-5 eziphambili ze-PTFE
1. Ukusetyenziswa kweempawu zokulwa nokugqwala
Irabha, iglasi, i-alloy yesinyithi kunye nezinye izinto azikwazi ukuhlangabezana neemeko ezinzima zobushushu, uxinzelelo kunye nokusingqongileyo okuhlala kunye kweekhemikhali ngenxa yeziphene zazo ekumelaneni nokugqwala. Nangona kunjalo, i-PTFE inokumelana okuhle kakhulu nokugqwala kwaye ngaloo ndlela ibe zizinto eziphambili ezimelana nokugqwala kwi-petroleum, iikhemikhali, iilaphu kunye nezinye izinto.
2. Ukusetyenziswa kweempawu zokungqubana okuphantsi kumthwalo
Ukuthambisa ngeoyile akufanelekanga kwiindawo zokungqubana kwezixhobo ezithile, kuba igrisi yokuthambisa inokunyibilikiswa zizinyibilikisi kwaye ayisebenzi, okanye iimveliso kwiindawo zamayeza, zokutya, zelaphu nakwezinye iindawo zoshishino kufuneka ziphephe ukudaya ngee-lubricants. Ngenxa yoko, iplastiki ye-PTFE, ene-coefficient of friction ephantsi kunezinye izinto eziqinileyo ezaziwayo, iye yaba yeyona nto ifanelekileyo yokuthambisa ngaphandle kweoyile (ukuthwala umthwalo ngqo) kwiindawo zezixhobo zoomatshini.
3. Ukusetyenziswa kwezombane neze-elektroniki
Ilahleko ephantsi yendalo kunye ne-dielectric constant encinci yezinto ze-PTFE izenza zibe yi-enamel wire yee-micro motors, ii-thermocouples kunye nezixhobo zokulawula. Ifilimu ye-PTFE yeyona nto ifanelekileyo yokukhusela i-insulation kwimveliso yee-capacitors, i-radio insulation liner, iintambo zokukhusela i-insulation, ii-motors kunye nee-transformers, kwaye ikwayenye yezinto ezibalulekileyo kwi-aerospace nakwezinye izinto ze-elektroniki zoshishino.
4. Ukusetyenziswa kwezonyango
I-PTFE ekhulisiweyo ayisebenzi kakuhle kwaye iyakwazi ukuguquguquka ngokwebhayoloji, ngoko ke ayibangeli ukwaliwa ngumzimba, ayinazo iziphumo ebezingalindelekanga emzimbeni womntu, inokususwa iintsholongwane nangayiphi na indlela, kwaye inesakhiwo esineembobo ezininzi.
5. Ukusetyenziswa kweempawu ezichasene nokuncamathelisa
Ngenxa yokuba umphezulu wayo uphantsi kakhulu kunezinye izinto eziqinileyo, i-PTFE Teflon ayinamatheli kuyo nayiphi na into. Ngaphezu koko, inokumelana okuhle kakhulu namaqondo obushushu aphezulu naphantsi. Ngenxa yoko, isetyenziswa kakhulu kwi-anti-adhesive pans ezinganamatheliyo.
Ukuba ukwiPtfe Tube, Ungathanda
Oku kulandelayo kukwazisa ngokubanzi iimpawu eziphambili zeetyhubhu ze-PTFE:
1. Ayinamatheli: Ayisebenzi, kwaye phantse zonke izinto azinamatheliswanga kuyo.
2. Ukumelana nobushushu: i-ferroflurone inokumelana nobushushu okugqwesileyo. Umsebenzi oqhelekileyo ungasetyenziswa rhoqo phakathi kwama-240℃ nama-260℃. Ukumelana nobushushu bexesha elifutshane ukuya kuma-300℃ kunye nendawo yokunyibilika engama-327℃.
3. Ukuthambisa: I-PTFE inomlinganiselo ophantsi wokungqubana. Umlinganiselo wokungqubana uyatshintsha xa umthwalo utyibilika, kodwa ixabiso liphakathi kwe-0.04 kunye ne-0.15 kuphela.
4. Ukumelana nemozulu: akukho ukuguga, kwaye ubomi obungcono bokungagugi kwiplastiki.
5. Ayinatyhefu: kwindawo eqhelekileyo engaphakathi kwama-260℃, ine-inertia ye-physiological kwaye ingasetyenziselwa izixhobo zonyango nezokutya.
Ukuthenga iityhubhu ze-PTFE ezifanelekileyo akupheleli nje ekukhetheni iinkcukacha ezahlukeneyo zezicelo ezahlukeneyo. Okungakumbi ukukhetha umenzi othembekileyo.I-Besteflon Fluorineiplastiki Industry Co., Ltd. igxile ekuveliseni izinto ezikumgangatho ophezuluIipayipi zePTFE kunye neetyhubhuiminyaka engama-20. Ukuba kukho imibuzo neemfuno, nceda uzive ukhululekile ukuqhagamshelana nathi ukuze ufumane iingcebiso zobungcali ezingakumbi.
Amanqaku Afanayo
Ixesha leposi: Matshi-15-2024