ʻO ka laholio fluorine (FKM) he elastomer thermosetting, ʻoiai ʻo polytetrafluoroethylene (PTFE) he thermoplastic. He mau mea fluorinated ʻelua, i hoʻopuni ʻia e nā ʻātoma fluorine e nā ʻātoma kalapona, ka mea e kūpaʻa loa ai lākou i nā kemika. Ma kēia ʻatikala, hoʻohālikelike ka hopena polymer TRP i nā mea ʻelua ma waena o FKM a mePTFEe hoʻoholo i ka mea fluorinated hope loa a koho i ka hope loaMea hana hose PTFE
Nā pono o ka laholio FKM a me ka PTFE
Nā Kumu:
FKM: Ua hoʻopilikia ʻia nā mokulele i ka wā o ke Kaua Honua II e ka leakage o nā sila nitrile, kahi i nele i ka hana haʻahaʻa haʻahaʻa e pono ai no nā noi like ʻole. ʻO ke ʻano kemika o nā pilina fluorocarbon ʻo ia hoʻi he hopena kūlohelohe nā elastomers fluorinated, a i ʻole fluoroelastomers. No laila ua hoʻomaka ke kālepa ʻia ʻana o ka rubber FKM i ka makahiki 1948.
PTFE: I ka makahiki 1938, ua ʻike ʻo Roy Plancott, he ʻepekema DuPont, i ka polytetrafluoroethylene ma ka ulia. Ua hoʻokolohua ʻo Plunkett me nā refrigerants a mālama iā lākou i loko o nā cylinders. I kona kahaha, ua hōʻuluʻulu ʻia kēia mau kinoea, e waiho ana i kahi mea waxy keʻokeʻo, ʻaʻole ia e pane me nā mea kemika a hiki ke kū i nā mahana kiʻekiʻe loa. Ua hoʻopaʻa inoa ʻo DuPont i ka brand mua o nā mea PTFE-ptfe i ka makahiki 1945.
ʻŌlelo Hoʻoholo: ʻO ka hoʻomohala ʻana o ka PTFE he mea kūlike ia o kahi hopena hoihoi, kahi i alakaʻi ai i ka hānau ʻana o kahi mea kupaianaha. Eia nō naʻe, he mea kupaianaha like, ʻo ka FKM rubber, he mea pono loa ia i nā makahiki kaua. No kēia kumu, ʻo ka hāʻawi mōʻaukala o ka FKM fluoroelastomer ʻo ia hoʻi he ʻoi aku ka maikaʻi ma kēia puni o ka hoʻokūkū.
Nā Waiwai:
Laho FKM: Loaʻa i ka laho FKM nā pilina kalapona-fluorine ikaika, e lilo ia i mea kemika loa, kūpaʻa i ka wela a kūpaʻa i ka oxidation. Loaʻa i ka FKM kahi helu ʻokoʻa o nā pilina kalapona-hydrogen (kahi pilina me ka wela nāwaliwali a me ke kūpaʻa kemika), akā he kūpaʻa kemika ikaika aʻe ma mua o ka hapa nui o nā elastomers ʻē aʻe.
PTFE: Ua haku ʻia ʻo Polytetrafluoroethylene me ke kaulahao o nā ʻātoma kalapona, me ʻelua mau ʻātoma fluorine ma kēlā me kēia ʻātoma kalapona. Hoʻopuni kēia mau ʻātoma fluorine i ke kaulahao kalapona e hana i kahi molekole paʻa me kahi pilina kalapona-fluorine ikaika loa a me kahi ʻano polymer, e hana ana iā PTFE inert i ka hapa nui o nā kemika.
ʻŌlelo Hoʻoholo: Ma muli wale nō o ko lākou ʻano kemika, ʻaʻohe pilina kalapona-hauwai o ka PTFE, ʻo ia hoʻi ka mea e ʻoi aku ka inert kemika ma mua o FKM (ʻoiai he kūpaʻa kemika loa ʻo FKM). No kēia kumu, ʻo ka PTFE wale nō ke aka o FKM ma kēia puni
Nā Pōmaikaʻi:
FKM:
Pae mahana ākea (-45°C-204°C)
Ke kūpaʻa kemika maikaʻi loa
Kiʻekiʻe ka nui, ʻano maikaʻi
Nā waiwai mīkini maikaʻi
Hiki ke hoʻokumu ʻia no ka decompression pahū, CIP, SIP
PTFE:
Ke kūpaʻa wela ākea (-30°C a i +200°C)
ʻAʻohe hana kemika
ʻO ka pale uila maikaʻi loa
Kūpaʻa loa i ke anu a me ka wela
ʻAʻole hoʻopili, pale wai
ʻO ke koina o ka friction ka mea liʻiliʻi loa ma waena o nā mea paʻa āpau
ʻŌlelo Hoʻoholo: ʻAʻole hiki ke hoʻokaʻawale iā lākou i kēia pōʻai. Hāʻawi ʻo FKM i ke kūpaʻa wela nui aʻe, akā ʻaʻole i hiki i ka hana o PTFE ma ke ʻano o ke kūpaʻa kemika. A ʻoi aku ka liʻiliʻi o ka PTFE i ke kūpaʻa wela, akā hāʻawi i nā ʻano he nui o nā waiwai ʻaʻole hoʻopili.
Nā hemahema:
FKM:
E pehu anei ia i loko o kahi mea hoʻoheheʻe fluorinated?
ʻAʻole hiki ke hoʻohana ʻia me nā metala alkali heheʻe a kinoea paha
ʻOi aku ke kiʻekiʻe o ke kumukūʻai ma mua o nā mea ʻē aʻe ʻaʻole fluorocarbons
ʻO ke koho ʻana i ka FKM hewa no ka noi hiki ke hana i ka hāʻule wikiwiki
Hiki ke pipiʻi nā papa mahana haʻahaʻa
PTFE:
Ka ikaika haʻahaʻa a me ke kūpaʻa
ʻAʻole hiki ke hoʻoheheʻe ʻia
Ke kūpaʻa hawewe maikaʻi ʻole
ʻO ka paʻakikī o ke kahakai kiʻekiʻe e paʻakikī ai ke sila iā PTFE
ʻOi aku ka nui o ka leakage o nā apo Ptfe ma mua o nā elastomers ʻē aʻe
ʻAʻole hiki ke hoʻokomo ʻia nā sila he nui i ka Inelasticity
ʻŌlelo Hoʻoholo: Ma keʻano laulā, ua lanakila ka laholio FKM i kēia hoʻokūkū me kona ikaika kiʻekiʻe, ka maʻalahi a me ka hiki ke sila. ʻOiaʻiʻo, inā ʻaʻole lawa ka sila kemika inert, a laila he koho maikaʻi ka PTFE. Eia nō naʻe, hāʻawi ʻo FKM i ka maʻalahi ma nā ʻano āpau!
Nā noi:
FKM:
Kaʻa
Ka hana kemika
ʻAila a me ke kinoea
Nā mīkini hana kaumaha
Lehulehu
He nui nā mea ʻē aʻe
PTFE:
Nā lako hana kemika
Nā kiwikā
Ka halihali kemika
Nā diaphragms pamu
ʻŌlelo Hoʻoholo: He kaua make ʻē aʻe kēia! Loaʻa iā FKM kahi ākea o nā noi, a hiki ke hoʻopili ʻia i kekahi mau noi kaumaha loa. Eia nō naʻe, me kona mau palena, hāʻawi nā mea PTFE i ka hopena hope loa no nā noi paʻakikī loa e pili ana i ke kaomi koʻikoʻi, ka mahana a me nā kemika ʻino.
Kumukūʻai:
He huahana kiʻekiʻe ka laholio FKM ma muli o kona ʻano kemika a me ke kūpaʻa kemika ma hope. Inā ʻaʻole ʻoe e noʻonoʻo i nā waiwai kemika a me ke kūpaʻa wela, hiki iā ʻoe ke koho i kahi elastomer ʻoi aku ka maikaʻi.
PTFE: He huahana kiʻekiʻe nō hoʻi ka mea PTFE. Pēlā nō, inā ʻaʻole ʻoi aku ka mahana, ke kaomi, a me nā kemika ʻino i komo i kāu noi ma mua o nā hihia koʻikoʻi loa, a laila makemake ʻia nā koho ʻē aʻe makepono. I mea e loaʻa ai ka hana sila maikaʻi loa, ua hoʻopaʻa ʻia ka PTFE i ka ʻiʻo elastomer e hāʻawi i ke kūʻē ʻana i ka compression.
ʻŌlelo hoʻoholoʻO FKM a me PTFE he mau huahana kiʻekiʻe no nā kumu maikaʻi. Loaʻa i kēia mau mea ʻelua nā waiwai kūikawā, e wehewehe ana i ke kumukūʻai o ka hana ʻana iā lākou. Eia nō naʻe, pono ʻoe e hoʻomanaʻo no nā noi koʻikoʻi, hāʻawi nā mea ʻelua i nā hiʻohiʻona kūikawā. I kēia hihia, loaʻa iā ʻoe ka mea āu e uku ai, a ʻo nā koho ʻē aʻe makepono e hāʻule koke. ʻO kēia ka hoʻokele waiwai hewa.
HopenaMa keʻano laulā, hāʻawi ka maʻalahi o FKM iā ia i kahi pono i kēia heihei kuhiakau. ʻO ka mea hope loa, hāʻawi kēia mau mea fluorinated ʻelua i ke kū'ē kemika kūikawā a me ke kū'ē wela. Eia nō naʻe, ma ke ʻano he plastic, ʻoi aku ka paʻa o PTFE ma mua o FKM; e kūpono wale nō ia no nā noi sila koʻikoʻi loa kahi e hopohopo nui ai ke kaomi kiʻekiʻe a me nā kemika corrosive. ʻO ka hoʻohana ākea ʻana o FKM ma ke ʻano he mea sila, ua hōʻoia i kona lanakila!
Ke manaʻolana nei mākou e hāʻawi kēia hoʻohālikelike ʻana o ka FKM rubber a me PTFE iā ʻoe i kahi ʻike maikaʻi aʻe o nā ʻano like ʻole o kēlā me kēia mea. Pono e hoʻomaopopo ʻia ʻo ke ala maikaʻi loa e koho ai i ka mea kūpono loa no kāu noi, ʻo ia ke kamaʻilio me kahi loea e hiki ke haʻi iā ʻoe i nā ʻano mea like ʻole a hoʻohālikelike i ka hopena kūpono no kāu noi.
ʻO ka mea i luna e pili ana i ka hoʻolauna ʻike e pili ana iā FKM a me PTFE, ke manaʻolana nei au e hiki i kēia ʻatikala ke kōkua iā ʻoe, no Kina mākou ka poʻe loeaNā mea hoʻolako hose PTFE, welcome to consult our products and please freely contact us at sales 07@zx-ptfe.com
Nā hulina e pili ana i ka hose ptfe:
Ka manawa hoʻouna: ʻApelila-16-2021