Okpomọkụ dị n'elu 77°C adịghị mma maka akụrụngwa nke ọtụtụ elastomers na plastik, ebe PTFE na-eguzogide okpomọkụ dị elu dị 260°C.Ọbụna n'okpuru 77 Celsius C, ọ bụrụ na a na-ejikọta acids corrosive na metals na organic solvents, liners na components nke PTFE na-ahọrọkarị n'ihi na elastomers na plastik ndị ọzọ anaghị enwekarị iguzogide ọzịza na nro.
Site kemịkalụ inertness, anyị pụtara nke ahụPTFEfluorocarbon resins nwere ike ịdị na-enwe mmekọrịta na-aga n'ihu na ihe ọzọ na-enweghị mmeghachi omume kemịkal na-eme.N'ozuzu, PTFE fluorocarbon resins bụ kemịkalụ inert.Ka o sina dị, nkwupụta a, dịka nkọwapụta niile, ga-enwerịrị ike iru eru ma ọ bụrụ na ọ ga-abụ nke ziri ezi.Nruzu agaghị eduga ná mgbagwoju anya, Otú ọ dị, ọ bụrụ na mmadụ na-eburu n'uche ihe ndị bụ isi banyere omume nke PTFE resins.
Nchịkọta nkọwa nke mbụ nke data ule dị iche iche nwere ike iduhie, n'ihi na ọ nwere ike ikpokọta ụdị omume "Chemical" dị iche iche.Ọ bụrụ na nkọwa a ga-edo anya, ọ ga-amarịrị ọdịiche dị n'etiti mmeghachi omume kemịkalụ siri ike yana omume anụ ahụ dịka nnabata.Nkọwa ahụ ga-eme ka onye ọrụ nwee ike iburu n'uche mmekọrịta nke anụ ahụ na kemịkal nke nwere ike imetụta otu ngwa.
Dịka ọmụmaatụ, resins PTFE agaghị emetụta imikpu na aqua regia.Ma ọ bụrụ na ọnọdụ okpomọkụ na nsonaazụ nke reagent a dị elu, ntinye nke akụkụ nke reagent n'ime resin ga-abawanye.Mgbanwe ndị na-esote, dị ka mfu nrụgide mberede, nwere ike imebi ahụ n'ihi mgbasawanye nke vapors na-etinye n'ime resin.N'ụzọ doro anya, mgbe ahụ, mgbe anyị na-ekwu banyere chemical Njirimara nke PTFE anyị ga-amata ọdịiche dị n'etiti nnọọ chemical Jeremaya mere, dị ka anyị kwuru na okwu nke "Chemical ndakọrịta" na anụ ahụ omume, dị ka "absorption" jikọtara na n'ibu na thermal nrụgide.
N'ime ọnọdụ okpomọkụ a na-ejikarị eme ihe, kemịkalụ ole na ole na-awakpo resin PTFE kama ịdekọ kemịkalụ nke ha dakọtara.Ndị a reactants bụ otu n'ime ndị kasị eme ihe ike oxidizers na mbenata elekọta mmadụ mara.sodium elemental na mmekọrịta chiri anya na fluorocarbons na-ewepụ fluorine na molekul polymer.A na-eji mmeghachi omume a eme ihe n'ọtụtụ ebe na ngwọta anhydrous iji kpachie elu nke PTFE ka resins wee nwee ike jikọta ya.Ọla alkali ndị ọzọ (potassium, lithium, wdg) na-emeghachi omume n'otu aka ahụ.
Ngwakọta chiri anya nke ntụ ntụ ọla kewara nkewa (dịka ọmụmaatụ, aluminom ma ọ bụ magnesium) nwere resin fluorocarbon ntụ ntụ nwere ike meghachi omume n'ike mgbe agbanyere ọkụ, mana okpomọkụ ọkụ ọkụ dị n'elu ebipụta akwadoro oke ọrụ okpomọkụ maka resin PTFE.PTFE nwere ike ijikwa oxidizers ndị nwere oke ike, fluorine (F2) na ogige ndị metụtara ya (dịka ọmụmaatụ, chlorine trifluoride, CIF3), site na PTFE naanị jiri nlezianya dị ukwuu na nnabata nke ihe egwu nwere ike.A na-etinye Fluorine n'ime resins, ma site na kọntaktị dị otú ahụ na-akpachi anya, ngwakọta na-enwe mmetụta maka isi iyi ọkụ dị ka mmetụta.
N'ụfọdụ oge na ma ọ bụ n'akụkụ oke okpomọkụ ọrụ atụnyere 260C maka TFE & PFA, yana 204°C maka FEP, kemịkalụ ole na ole n'ọkwa dị elu ka akọpụtala mmeghachi omume na PTFE.Mwakpo yiri sodium etch ka emepụtara na okpomọkụ dị elu site na 80% NaOH ma ọ bụ KOH, metal hydrides dị ka boranes (dịka, B2H6), aluminum chloride, amonia (NH3), na ụfọdụ amines (R-NH2) na imines ( R = NH).Ọzọkwa, a hụla ọgụ oxidative ngwa ngwa site na 70% nitric acid n'okpuru nrụgide na 250 Celsius.A chọrọ nnwale pụrụ iche mgbe a na-abịaru nso oke oke nke mbenata ma ọ bụ ọnọdụ oxidizing.
N'ihi ya, ewezuga dị ka ekwuru, PTFE resins na-egosipụta oke kemịkalụ na ọrụ ọkụ.Mana onye zụrụ ma ọ bụ nkọwapụta akụkụ nke PTFE kwesịrị ịma ma ghọta oke ya n'ihe gbasara gburugburu kemịkalụ na-emebu.N'adịghị ka mmachi nke ọla, ndị a na-adịkarị bụghị kemịkal zụta anụ ahụ na ọdịdị.Mmetụta nke okpomọkụ, nrụgide, na absorptivity nke kemịkalụ na PTFE, na mmekọrịta ha, bụ ihe na-emekarị na-amachi ọnọdụ nke PTFE ga-arụ ọrụ nke ọma.Ebe ọ bụ na nke a dị iche n'ihe fọrọ nke nta ka ọ bụrụ ihe ọ bụla a na-ewu ụlọ, ọ chọrọ iji nlezianya tụlee nkọwa zuru ezu nke na-esote.
Oge nzipu: Ọktoba 04-2019