Kodi ptfe chubu imapangidwa ndi chiyani?
Chiyambi cha malonda
1,Ptfe chubundi dzina lina la polytetrafluoroethylene, chidule cha Chingerezi ndi PTFE, (yomwe imadziwika kuti "Plastic King, Hara"), ndipo chilinganizo chamankhwala ndi -(CF2-CF2)n-.Polytetrafluoroethylene inapezeka mwangozi mu 1938 ndi katswiri wa zamankhwala Dr. Roy J. Plunkett ku DuPont.'s Jackson Laboratory ku New Jersey, USA Pamene anayesa kupanga chlorofluorocarbon yatsopano Pankhani ya refrigerant pawiri.Zogulitsa zamtunduwu nthawi zambiri zimatchedwa "zopaka zopanda ndodo";ndizinthu zopangidwa ndi polima zomwe zimagwiritsa ntchito fluorine m'malo mwa maatomu onse a haidrojeni mu polyethylene.Izi zimagonjetsedwa ndi zidulo, alkalis, ndi zosungunulira zosiyanasiyana za organic, ndipo zimakhala zosasungunuka muzosungunulira zonse.Pa nthawi yomweyo, PTFE ali ndi makhalidwe a kutentha kukana mkulu, ndi mikangano coefficient ndi otsika kwambiri, choncho angagwiritsidwe ntchito ngati njira kondomu, ndipo wakhalanso ❖ kuyanika abwino kwa wosanjikiza wamkati miphika sanali ndodo. ndi mapaipi amadzi
Zogulitsa izi zimagwiritsidwa ntchito kwambiri pazinthu izi:
PTFE, FEP, PFA, ETFE, AF, NXT, FFR.
PTFE: PTFE (polytetrafluoroethylene) ❖ kuyanika osakhala ndodo angagwiritsidwe ntchito mosalekeza pa 260°C, ndi kutentha kwakukulu kwa 290-300°C, kugundana kotsika kwambiri, kukana kwabwino komanso kukhazikika kwamankhwala.
FEP: FEP (fluorinated ethylene propylene copolymer) yosagwira ndodo imasungunuka ndikuyenda kupanga filimu yopanda porous panthawi yophika.Ili ndi kukhazikika kwamankhwala abwino kwambiri komanso mawonekedwe abwino osamata.Kugwiritsa ntchito kwambiri kutentha ndi 200℃.
PFA: PFA (perfluoroalkyl compound) yosagwira ndodo imasungunuka ndikuyenda panthawi yophika kupanga filimu yopanda porous ngati FEP.Ubwino wa PFA ndikuti ili ndi kutentha kosalekeza kosalekeza kwa 260°C, kuuma kolimba ndi kulimba, ndipo ndiyoyenera kugwiritsidwa ntchito polimbana ndi zomatira ndi zokanira mankhwala pansi pa kutentha kwambiri.
PTFE (Polytetrafluoroethene) ndi polima zakuthupi zomwe zimagwiritsa ntchito fluorine m'malo mwa maatomu onse a haidrojeni mu polyethylene.Izi zimagonjetsedwa ndi zidulo, alkalis, ndi zosungunulira zosiyanasiyana za organic, ndipo zimakhala zosasungunuka muzosungunulira zonse.Panthawi imodzimodziyo, chubu cha ptfe chimakhala ndi zizindikiro zotsutsana ndi kutentha kwakukulu, ndipo chigawo chake chotsutsana ndi chochepa kwambiri, kotero chikhoza kugwiritsidwa ntchito popaka mafuta, ndipo chakhalanso chopaka bwino cha mawoks osavuta kuyeretsa ndi mapaipi amadzi.Itha kugwiritsidwa ntchito pakukana kwa payipi, kukana kutentha kwambiri komanso kutsika, komanso kukana kwa dzimbiri.Amagwiritsidwa ntchito m'malo ovuta monga kudzoza, uinjiniya, zamagetsi, zida zamagetsi, ndi ndege.
Zogulitsa
1, High ndi otsika kutentha kukana: zotsatira pang'ono pa kutentha, lonse kutentha osiyanasiyana, kutentha yoyenera -65 ~ 260 ℃.
2, Zosamata: Pafupifupi zinthu zonse sizimalumikizidwa ndi filimu ya PTFE.Mafilimu oonda kwambiri amasonyezanso ntchito yabwino yosasokoneza.2. Kukana kutentha: PTFE ❖ kuyanika filimu ali kwambiri kutentha kukana ndi otsika kutentha kukana.Imatha kupirira kutentha kwambiri mpaka 300 ° C munthawi yochepa, ndipo imatha kugwiritsidwa ntchito mosalekeza pakati pa 240 ° C ndi 260 ° C.Zili ndi kukhazikika kwamafuta.Ikhoza kugwira ntchito pa kutentha kozizira popanda kusungunuka ndipo sichisungunuka kutentha kwambiri.
3, Kutsetsereka Katundu: PTFE ❖ kuyanika filimu ali ndi kokwana apamwamba mikangano.Mkangano wa coefficient umasintha pamene katundu akutsetsereka, koma mtengo umangokhala pakati pa 0.05-0.15.
4, kukana chinyezi: Pamwamba pa PTFE ❖ kuyanika filimu si kumamatira madzi ndi mafuta, ndipo n'zosavuta kumamatira yankho pa ntchito kupanga.Ngati pali dothi laling'ono, ingopukutani.Kuwononga nthawi yayifupi, kupulumutsa nthawi yogwira ntchito komanso kukonza magwiridwe antchito.
5, Valani kukana: Ili ndi kukana kovala bwino kwambiri pansi pa katundu wambiri.Pansi pa katundu wina, imakhala ndi ubwino wapawiri wotsutsana ndi kuvala komanso kusasokoneza.
6, Kukana dzimbiri: PTFE ndi nkomwe dzimbiri ndi mankhwala, ndipo akhoza kupirira zidulo amphamvu (kuphatikizapo aqua regia) ndi okosijeni wamphamvu kupatula zitsulo zamchere, fluorinated TV ndi sodium hydroxide pamwamba 300 ° C.Udindo wa kuchepetsa wothandizira ndi zosungunulira zosiyanasiyana organic akhoza kuteteza mbali ku mtundu uliwonse wa dzimbiri mankhwala
mankhwala katundu
1, Kusungunula: Osakhudzidwa ndi chilengedwe ndi mafupipafupi, kukana kwa voliyumu kumatha kufika 1018 ohm · cm, kutayika kwa dielectric kumakhala kochepa, ndipo mphamvu yowonongeka ndipamwamba.
2, High ndi otsika kutentha kukana: zotsatira pang'ono kutentha, lonse kutentha osiyanasiyana, kutentha yoyenera -190 ~ 260 ℃.
3, Kudzipaka mafuta: Imakhala ndi mikangano yaying'ono kwambiri pakati pa mapulasitiki ndipo ndi yabwino kwambiri yopanda mafuta.
4, Kusasunthika kwapamtunda: zida zodziwika bwino sizingagwirizane ndi pamwamba, ndizinthu zolimba zomwe zimakhala ndi mphamvu zochepa kwambiri.
5, Kukana kwanyengo, kukana kwa radiation ndi kutsika kochepa: kuwonekera kwanthawi yayitali mumlengalenga, pamwamba ndi magwiridwe antchito sizisintha.
6, Kusayaka: Mlozera wochepera wa oxygen uli pansi pa 90.
7, PTFE chimagwiritsidwa ntchito m'mafakitale amafuna mkulu kutentha kukana ndi mkulu mamasukidwe akayendedwe.Amphamvu kwambiri asidi-fluoroantimonic asidi angagwiritsidwenso ntchito kuteteza
Malo ogwiritsira ntchito mankhwala
Polytetrafluoroethylene imatha kupangidwa ndikukankhira kapena kutulutsa;imathanso kupangidwa kukhala filimu ndikudula mu tepi ya PTFE yokhala ndi shaft ikagwiritsidwa ntchito mu mawaya otentha kwambiri.Amagwiritsidwa ntchito popanga zingwe zothamanga kwambiri ndipo amapangidwa mwachindunji mukumwaza kwamadzi.Itha kugwiritsidwa ntchito kupaka, impregnation kapena kupanga fiber.
Polytetrafluoroethylene chimagwiritsidwa ntchito m'mafakitale monga mphamvu nyukiliya, chitetezo dziko, Azamlengalenga, zamagetsi, magetsi, mankhwala, makina, zida, mamita, zomangamanga, nsalu, zitsulo pamwamba mankhwala, mankhwala, chithandizo chamankhwala, chakudya, zitsulo ndi smelting, etc. zipangizo, zotetezera, zokutira zotsutsana ndi ndodo, ndi zina zotero zimapanga chinthu chosasinthika.
PTFE hoseIli ndi zida zodziwika bwino kwambiri, kukana kutentha kwambiri, kukana dzimbiri, kusagwira ndodo, kudzipaka mafuta, zida zabwino kwambiri za dielectric, komanso kugundana kotsika kwambiri.Ntchito ngati mapulasitiki uinjiniya, zikhoza kupangidwa PTFE machubu, ndodo, malamba, mbale, mafilimu, etc. Nthawi zambiri ntchito mapaipi dzimbiri zosagwira, zotengera, mapampu, mavavu, rada, mkulu-pafupipafupi kulankhula zida, zipangizo wailesi, radomes, etc. ndi zofunika ntchito mkulu.Powonjezera chodzaza chilichonse chomwe chimatha kupirira kutentha kwa sintering ya polytetrafluoroethylene, makina ake amatha kusintha kwambiri.Nthawi yomweyo, zina zabwino kwambiri za PTFE zimasungidwa.Mitundu yodzaza ndi magalasi, zitsulo, chitsulo okusayidi, graphite, molybdenum disulfide, carbon fiber, polyimide, EKONOL, ndi zina zotero.
Zosaka zokhudzana ndi ptfe hose:
Nthawi yotumiza: Jan-07-2021