I-PTFE yeyona plastiki ihlala ixesha elide eyaziwayo okwangoku. Isetyenziswa kakhulu kumashishini ahlukeneyo aneemeko ezinzima. Ngenxa yokusebenza kwayo okuhle, iye yaba yimveliso ephambili kwiimveliso zeplastiki (Yonke ibizwa ngokuba yiPolytetrafluoroethylene). Ke ngoko, kukwakho nabavelisi abaninzi abavelisa ezi mveliso. I-PTFE inokwenziwa ibe ziintlobo ngeentlobo zeemveliso, ezinje ngeetyhubhu, iintonga, iipleyiti, iigasket, iifilimu, njl.njl., ezisetyenziswa kwiindawo ezahlukeneyo.
Yintoni ityhubhu yePTFE?
I-Polytetrafluoroethylene (efinyeziweyo njenge-PTFE), eyaziwa ngokuba yi-"Plastic King", yi-polymer ephezulu ye-molecular efunyenwe ngokupholisha i-tetrafluoroethylene njenge-monomer, emhlophe okanye ekhanyayo. Le nto ayinazo naziphi na ii-pigment okanye izongezo, kwaye ineempawu zokumelana ne-asidi kunye ne-alkali, ukumelana nezinyibilikisi ezahlukeneyo ze-organic, kwaye phantse ayinyibiliki kuzo zonke izinyibilikisi. Ukongeza, i-PTFE inoluhlu olubanzi lobushushu kwaye ingasetyenziswa ixesha elide kwi--65°C ~ 260°C phantsi koxinzelelo oluqhelekileyo. Yenziwe ngendlela ye-paste extrusion. Iityhubhu ze-PTFE ezenziwe kusetyenziswa i-paste extrusion ziyaguquguquka kwaye zinokwenza iityhubhu ze-PTFE ezinobubanzi obungaphakathi obuncinci njenge-0.3 mm ukuya kuthi ga kwi-100 mm kunye nobukhulu bodonga obuncinci njenge-0.1 mm ukuya kwi-2 mm. Ke ngoko, iityhubhu ze-polytetrafluoroethylene (PTFE) yimveliso eguquguqukayo kakhulu enika uluhlu olubanzi lwezicelo kumashishini amaninzi ahlukeneyo.
Kutheni iityhubhu zePTFE zisetyenziswa kakhulu:
1. Ukumelana nobushushu obuphezulu, akunyibiliki nakweyiphi na into enyibilikisayo. Ingamelana nobushushu obuphezulu ukuya kuthi ga kwi-300 °C ngexesha elifutshane, kwaye ngokubanzi ingasetyenziswa rhoqo phakathi kwe-200 °C kunye ne-260 °C, kunye nozinzo olukhulu lobushushu.
2. Ukumelana nobushushu obuphantsi, ukuqina okuhle koomatshini kubushushu obuphantsi, nokuba ubushushu buhla bufike kwi -65 ℃, abuyi kuba bubuthathaka, kwaye bunokugcina ubude be-5%.
3. Ayinakumelana nokugqwala, ayingeni khemikhali ezininzi kunye nezinyibilikisi, ayingeni zixhobo zinamandla kunye ne-alkalis, amanzi kunye nezinye izinyibilikisi zendalo, inokukhusela iindawo kuyo nayiphi na uhlobo lokugqwala kweekhemikhali.
4. Ukulwa nokwaluphala, xa kuthwalwa kakhulu, kuneenzuzo ezimbini zokungagugi nokunganamatheli. Eyona ndlela ilungileyo yokwaluphala kwiplastiki.
5. Ukuthambisa okuphezulu, eyona coefficient iphantsi yokungqubana phakathi kwezinto eziqinileyo. I-coefficient yokungqubana iyatshintsha xa umthwalo utyibilika, kodwa ixabiso liphakathi kwe-0.05-0.15 kuphela. Ke ngoko, ineengenelo zokuxhathisa okuphantsi kokuqala kunye nokusebenza kakuhle ekwenzeni iibheringi.
6. Ukunganamatheli yeyona nto incinci kakhulu kumphezulu wezinto eziqinileyo, kwaye akunamatheli nakweyiphi na into. Phantse zonke izinto azinamatheli kuyo. Iifilimu ezincinci kakhulu zibonisa iimpawu ezintle zokunganamatheli.
7. Ayinavumba, ayinancasa, ayinatyhefu, ayisebenzi kakuhle emzimbeni, kwaye ayinazo iziphumo ezibi xa ifakwe emzimbeni njengemithambo yegazi yokwenziwa kunye namalungu omzimba ixesha elide.
8. Ilula kwaye iguquguquka. Inciphisa kakhulu amandla omsebenzi womqhubi.
Ezinye zeendlela eziqhelekileyo zokusebenzisa iityhubhu ze-PTFE:
1. Ishishini leekhemikhali
Ngenxa yokumelana kwazo neekhemikhali ezininzi phantse kuzo zonke iikhemikhali, iityhubhu zePTFE zilungele ukusetyenziswa kwishishini leekhemikhali. Oku kuquka ishishini lee-semiconductor. Iinkqubo zanamhlanje kwimveliso ye-semiconductor zifuna ukulinganiswa okukhuselekileyo kunye nokuthuthwa kwezinto ezibolayo (ii-asidi kunye neziseko). Ezi zingonakalisa kakhulu ityhubhu yokuhambisa ngexesha elifutshane.
2. Ishishini leemoto
Kwinjini yemoto, iityhubhu ezisemgangathweni ophezulu ezenziwe nge-PTFE zisetyenziselwa ukufudumeza amafutha kunye neereyili zepetroli. Ezifana neepayipi zepetroli, iipayipi ze-turbocharger, iipayipi zecoolant, iipayipi zebrake ezizenzekelayo, iipayipi zebrake zebhayisekile, iipayipi ze-diesel, iipayipi ze-racing kunye neepayipi ze-power steering. Iimpawu zokumelana nobushushu obuphezulu kunye nobushushu obuphantsi, ukumelana noxinzelelo oluphezulu, ukumelana nokuguguleka kunye nokumelana nokugqwala kwetyhubhu ye-PTFE zenza ukuba ihlale ixesha elide ngaphandle kokutshintshwa rhoqo.
3. Ishishini lokushicilela le-3D
Kwiprinta ye-3D, i-filament kufuneka idluliselwe kwi-nozzle yokuprinta, ekufuneka yenziwe kubushushu obuphezulu. I-PTFE tube yeyona polymer ikhethwayo kwishishini lokuprinta le-3D ngenxa ye-coefficient yayo yobushushu obuphezulu kunye neempawu ezinganamatheliyo, ezinceda ukushelela izinto ngokulula kwi-nozzle.
4. Ishishini lezonyango
Iimpawu ezikhethekileyo zeetyhubhu zePTFE ziquka nesakhiwo somphezulu esilula ukusicoca. Kwiminyaka elishumi edlulileyo, iityhubhu zePTFE bezisetyenziswa kakhulu kwizixhobo zonyango. Ngenxa yokungalingani okuphantsi kweetyhubhu zePTFE, oko kuthetha ukuba inomphezulu ogudileyo kakhulu ongagqumiyo okanye onceda ukukhula kweebhaktheriya. Phakathi kwazo, iipayipi zisetyenziselwa ii-cannula, ii-catheters, ii-pipettes kunye nee-endoscopes.
5. Ishishini lokutya
Ngenxa yokuba kulula ukuyicoca kwaye ayinamatheli, iityhubhu ze-PTFE zingasetyenziswa kwishishini lokutya. Ngokukodwa, iityhubhu ezenziwe nge-PTFE engazaliswanga zifanelekile ngenxa yokungathathi cala kwazo ngokwasemzimbeni kwaye zihambelana nezikhokelo ze-US Food and Drug Administration. Ke ngoko, kuye kwabonakala ngathi ayinabungozi xa idibana neplastiki kunye naluphi na uhlobo lokutya.
Ukuthenga iityhubhu zePTFE ezifanelekileyo akupheleli nje ekukhetheni iinkcukacha ezahlukeneyo zezicelo ezahlukeneyo. Okungakumbi ukukhetha umenzi othembekileyo. I-Besteflon Fluorine plastic Industry Co., Ltd. igxile ekuveliseni iipayipi zePTFE ezikumgangatho ophezulu kunye neetyhubhu kangangeminyaka eli-15. Ukuba unemibuzo kunye neemfuno, nceda uzive ukhululekile ukuqhagamshelana nathi ukuze ufumane iingcebiso zobungcali ezingakumbi.
Amanqaku Afanayo
Ixesha lokuthumela: Agasti-13-2022