Chosankha: Chingwe cha ePTFE vs. PTFE?

Kodi pali kusiyana kotani pakati pa PTFE ndi ePTFE?

PTFE, yomwe ndi chidule cha polytetrafluoroethylene, ndi fluoropolymer yopangidwa ndi tetrafluoroethylene. Kuwonjezera pa kukhala yopanda hydrophobic, zomwe zikutanthauza kuti imathamangitsa madzi,PTFESizimakhudzidwa ndi kutentha kwambiri; sizimakhudzidwa ndi mankhwala ambiri ndi zinthu zina, ndipo zimakhala ndi malo omwe palibe chomwe chingamamatire.

Mitundu ya Kusonkhanitsa Fumbi

Kwa osonkhanitsa fumbi louma, omwe amagwiritsa ntchito zosefera za m'nyumba zosungiramo zikwama, pali njira ziwiri zodziwika bwino - makina ogwedeza (awa ndi makina akale omwe akuchepa tsiku lililonse), momwe thumba losonkhanitsa limagwedezeka kuti lichotse tinthu tomwe taphwanyika, ndi pulse jet (yomwe imadziwikanso kuti kuyeretsa mpweya wopanikizika), momwe mpweya wothamanga kwambiri umagwiritsidwa ntchito kuchotsa fumbi m'thumba.

Matumba ambiri amagwiritsa ntchito matumba ataliatali, ooneka ngati tubular opangidwa ndi nsalu yolukidwa kapena yodulidwa ngati njira yosefera. Pa ntchito zomwe zili ndi fumbi lochepa komanso kutentha kwa mpweya kwa 250 °F (121 °C) kapena kuchepera, makatiriji okhala ndi ma plea, osalukidwa nthawi zina amagwiritsidwanso ntchito ngati zosefera m'malo mwa matumba.

Mitundu ya Zosefera Chikwama Chosefera

Ponena za zipangizo zomwe zimagwiritsidwa ntchito popanga zosefera, pali njira zambiri zomwe zikupezeka. Zipangizozi zimapirira kutentha kosiyanasiyana, zimapereka milingo yosiyanasiyana yogwirira ntchito bwino, zimathandiza luso losiyana lopirira zinthu zokwawa, komanso zimapereka mankhwala osiyanasiyana.

Zosankha za media (zomwe zingaperekedwe mu mawonekedwe oluka ndi/kapena ofewa) zikuphatikizapo thonje, polyester, ma micro denier felts opangidwa bwino kwambiri, polypropylene, nayiloni, acrylic, aramid, fiberglass, P84 (polyimide), PPS (polyphenylene sulfide)

Mitundu ya Zikwama Zosefera Zomalizidwa

Mukasankha chojambulira cha matumba anu osefera, chisankho chanu chotsatira chidzakhala ngati mukufuna kugwiritsa ntchito kumaliza kapena ayi. Kugwiritsa ntchito kumaliza koyenera (kapena kuphatikiza kumaliza nthawi zina) kungathandize kwambiri moyo wa thumba lanu, kutulutsa keke, komanso kuteteza ku zovuta zomwe mungagwiritse ntchito.

Mitundu ya zomaliza ndi monga zoyaka, zopakidwa glaze, zoletsa moto, zosagwirizana ndi asidi, zosagwirizana ndi nthunzi, zotsutsana ndi kutentha, komanso zodana ndi oleophobic, kungotchulapo zochepa chabe.

PTFE ingagwiritsidwe ntchito ngati kumaliza m'njira ziwiri zosiyana—monga nembanemba woonda kapena ngati chophimba/bafa.

Mitundu ya PTFE Finishes

Tiyeni tiyambe ndi kuganizira fyuluta ya thumba la matumba yomwe ili ngati thumba la polyester lofelted. Thumba likagwiritsidwa ntchito, tinthu tina ta fumbi timalowa m'malo olumikizirana. Izi zimatchedwa kusefera kwa depth loading. Thumba likagwedezeka, kapena mpweya wopanikizika ukayamba kugwira ntchito kuti uchotse tinthu tokhala ndi ma clamped, tinthu tina timagwera mu hopper ndikuchotsedwa mu system, koma tina timatsala mu nsalu. Pakapita nthawi, tinthu tambirimbiri timalowa mkati mwa pores a malo olumikizirana ndikuyamba kuphimba malo olumikizirana ndi malo olumikizirana ndi malo olumikizirana, zomwe zidzawononga magwiridwe antchito a fyuluta mtsogolo.

Nembanemba ya ePTFE ingagwiritsidwe ntchito pa matumba wamba komanso okhala ndi zingwe zopangidwa ndi nsalu yolukidwa ndi yofewa. Nembanemba yotereyi ndi yopyapyala kwambiri (ganizirani "pulasitiki yophimba chakudya" kuti ipereke chithunzi) ndipo imagwiritsidwa ntchito ku fakitale kunja kwa thumba. Pankhaniyi, nembanembayo idzawonjezera kwambiri magwiridwe antchito a thumba (komwe "kugwira ntchito bwino" munkhaniyi kumatanthauza kuchuluka ndi kukula kwa tinthu ta fumbi tomwe tikusefedwa). Ngati thumba la polyester losamalizidwa lipeza mphamvu ya 99% pa tinthu tating'onoting'ono ta ma micron awiri ndi akulu, mwachitsanzo, kuwonjezera nembanemba ya ePTFE kungapangitse kuti tinthu tating'onoting'ono tigwire ntchito ndi 99.99% mpaka 1 micron ndi tating'onoting'ono, kutengera fumbi ndi momwe ntchito ikuyendera. Kuphatikiza apo, mphamvu zosalala, zosamamatira za nembanemba ya ePTFE zikutanthauza kuti kugwedeza thumba kapena kugwiritsa ntchito pulse jet kudzapangitsa kuti fumbi lokhala ndi zingwe zambiri lichotsedwe ndikuchotsa kapena kuchepetsa kusefedwa kwakuya ndi kuphimba khungu kwa moyo wa nembanembayo (tinthu tating'onoting'onoti tidzawonongeka pakapita nthawi; komanso, kuti tiwonjezere moyo wawo wautali, sitiyenera kugwiritsidwa ntchito limodzi ndi tinthu ta fumbi tomwe timakhala ndi zingwe).

Ngakhale kuti nembanemba ya ePTFE ndi mtundu wa mapeto, anthu ena amaona kuti mawu akuti "PTFE finish" ndi kusamba kapena kupopera PTFE yamadzimadzi pa fyuluta. Pankhaniyi, ulusi wa media umayikidwa payokha mu PTFE. Mapeto a PTFE amtunduwu sadzawonjezera mphamvu yosefera, ndipo thumba likhoza kukhalabe lodzaza ndi kuya, koma ngati pulse jet ikugwiritsidwa ntchito, thumba lidzatsuka mosavuta chifukwa cha utoto wosalala womwe PTFE imapereka pa ulusi.

Ndi iti yabwino kwambiri: ePTFE Membrane kapena PTFE Finish?

Chikwama chowonjezeredwa ndi nembanemba ya ePTFE chingawonjezere mphamvu mpaka 10X kapena kuposerapo, chidzakhala chosavuta kuyeretsa, ndipo sichidzavutika ndi kuzama kwa zinthu. Komanso, nembanemba ya ePTFE ndi yabwino kwambiri pa fumbi lomata komanso lamafuta. Poyerekeza, thumba losakhala ndi nembanemba lomwe lakonzedwa ndi PTFE silidzawonjezera mphamvu ya zinthu ndipo lidzapitirirabe kukhala lozama, koma lidzakhala losavuta kuyeretsa kusiyana ndi ngati litatha kuchotsedwa.

Kale, nthawi zina, kusankha pakati pa nembanemba ya ePTFE ndi PTFE kunkachitika chifukwa cha mtengo wake chifukwa nembanemba zinali zodula, koma mtengo wa matumba a nembanemba watsika m'zaka zaposachedwa.

Zonsezi zingayambitse funso lakuti: “Ngati simungathe kupambana nembanemba ya ePTFE kuti igwire bwino ntchito komanso kuti isatseke kuya, ndipo ngati mtengo wa thumba la nembanemba watsika kotero kuti mtengo wake ndi wokwera pang'ono kuposa thumba lokhala ndi PTFE, ndiye bwanji simungasankhe nembanemba ya ePTFE?” Yankho lake ndilakuti simungagwiritse ntchito nembanemba pamalo pomwe fumbi ndi losalimba chifukwa—ngati mutero—simudzakhala ndi nembanemba kwa nthawi yayitali. Pankhani ya fumbi losalimba, njira yabwino ndiyo kutsiriza PTFE.

Komabe, kusankha njira yoyenera kwambiri yogwiritsira ntchito zosefera ndi zomaliza zosefera (kapena zomaliza) ndi vuto la magawo ambiri, ndipo yankho labwino kwambiri limadalira zinthu zambiri.