N'ime osisi kemịkalụ, ahịrị electroplating, na ihe eji eme semiconductor, mkpuchi akụrụngwa na eriri ebufe na-eche ọgụ mgbe niile site na kemịkalụ ike ike. PTFE elu-okpomọkụ ákwà (fiberglass ákwà ntekwasa na polytetrafluoroethylene) na-emekarị kpọmkwem kpọmkwem n'ihi na nke ya pụrụ iche chemical inertness. Ma 'ihe fọrọ nke nta ka ọ bụrụ eluigwe na ala' nguzogide abụghị 'universal' - ihe ole na ole na-eme ihe ike nwere ike ịwakpo ya, na okpomọkụ na-arụ ọrụ dị egwu.
Aokai PTFE anwalela akwa PTFE megide ọtụtụ narị kemịkalụ. Ntuziaka a na-akọwa ihe ọ na-eguzogide, ihe a ga-ezere, na otú okpomọkụ si emetụta arụmọrụ.
Profaịlụ arụmọrụ n'ozuzu ya - Inertness kemịkalụ dị nso
PTFE akwa okpomọkụ dị elu na-anya isi nguzogide corrosion kemịkalụ pụrụ iche, ogo n'etiti ọkwa kachasị elu nke ihe injinia nkịtị. Ihe onwunwe a bụ isi sitere na mkpuchi polytetrafluoroethylene dị n'èzí, nke nwere njikọ carbon-fluorine siri ike (CF) nke na-eguzogide ọgụ kemịkalụ.
Mkpụrụ fiberglass dị n'okpuru abụghị kemịkalụ inert - mana ọ bụrụhaala na mkpuchi PTFE na-adịgide adịgide, akwa ahụ na-arụ ọrụ dị ka ihe na-adịghị ike. N'oge okpomọkụ na-arụ ọrụ mgbe niile, akwa PTFE na-anọgide na-adịgide adịgide megide ọnụ ọgụgụ ka ukwuu nke acid siri ike, alkalis siri ike, ihe mgbaze organic na ihe ndị na-emepụta ihe.
Ogologo mgbasa ozi na-eguzogide - Ihe PTFE Fabric nwere ike ijikwa
Na okpomọkụ na-arụ ọrụ mgbe niile, ihe ahụ na-anọgide na-adịgide adịgide megide ọnụ ọgụgụ ka ukwuu nke acids siri ike, alkalis siri ike, ihe mgbaze organic na ihe ndị na-eme ka ọ ghara ịdị.
1. Acid siri ike
Sulfuric acid na-etinye uche, nitric acid, hydrochloric acid, phosphoric acid, na aqua regia (ngwakọta nke nitric na hydrochloric acid nke na-agbaze ọla edo) - PTFE na-eguzogide ha niile. Ọ nweghị nbibi enwere ike ịtụnye.
2. alkalis siri ike
Sodium hydroxide (NaOH) na potassium hydroxide (KOH) ngwọta enweghị mmetụta ọjọọ na ụlọ okpomọkụ. Nguzogide na-agbatị ruo ọtụtụ gburugburu alkaline.
3. Organic mgbaze
PTFE bụ ihe a na-apụghị imeri emeri na ihe mgbaze niile amaara. Ọ gaghị aza ma ọ bụ gbazee mgbe ekpughere ya na ketones, alcohols, ethers, hydrocarbons, chlorinated solvents, ma ọ bụ ụdị ihe mgbaze ọ bụla ọzọ.
4. Ndị ọrụ oxidizing
Na-egosiputa nnabata dị mma na oxidizers dị ike dị ka hydrogen peroxide (H₂O₂) na permanganates.
5. Njirimara ndị ọzọ
Hydrolysis na-eguzogide - mmiri ma ọ bụ uzuoku adịghị emetụta ya
Mmanụ na-ere mmanụ na enweghị osisi - ike dị ala na-egbochi ntanye
Ntinye mmiri - efu nke ọma (<0.01%)
Ewezuga – Chemicals ka ị kpachara anya gbasara
PTFE anaghị eguzogide ụwa niile. Ọ na-emeghachi omume na ọnụ ọgụgụ dị nta nke kemịkalụ na-arụ ọrụ nke ukwuu n'okpuru ọnọdụ dị oke egwu, nke chọrọ nlebara anya pụrụ iche n'oge nhọrọ ihe.
Aokai PTFE na-ekwusi ike na ihe ndị a dị ụkọ mana ọ dị oke mkpa ịmara:
H3: ọla alkali a wụrụ awụ
Molten sodium (Na), potassium (K), na lithium (Li) na-agbaji njikọ carbon-fluorine n'ime PTFE, na-ebute mbibi zuru oke. Nke a bụ ụkpụrụ dị n'azụ sodium-naphthalene etching maka ọgwụgwọ elu PTFE.
H3: Ogige halogen na-arụ ọrụ nke ukwuu n'okpuru okpomọkụ dị elu na nrụgide dị elu
Chlorine trifluoride (ClF₃)
Oxygen difluoride (OF₂)
Fluorine gas (F₂) na oke okpomọkụ na nrụgide
Ndị a nwere ike meghachi omume na ma ọ bụ ọbụna combus PTFE n'okpuru oke ọnọdụ.
H3: alkalis siri ike gbazere na okpomọkụ dị elu
Molten sodium hydroxide (NaOH) ma ọ bụ potassium hydroxide (KOH) n'elu ihe dịka 300 Celsius C ji nwayọọ nwayọọ na-emebi PTFE. Na okpomọkụ ụlọ, enweghị mmetụta.
H3: Ihe ncheta dị mkpa - mmebi mkpuchi na-ekpughe fiberglass
Ihe mgbochi ndị a dị n'elu na-emetụta naanị na mkpuchi elu PTFE. Ọ bụrụ na a kpụchara ihe mkpuchi ahụ, mebie, ma ọ bụ nwee pinholes, a ga-ekpughe mkpụrụ osisi fiberglass dị n'okpuru. Fiberglass nwere adịghị mma iguzogide:
Hydrofluoric acid (HF) - na-agbaze eriri iko ngwa ngwa
Hot lekwasịrị alkalis - ọgụ iko
Nke a bụ ya mere ijigide iguzosi ike n'ezi ihe mkpuchi dị oke mkpa maka ọrụ kemịkal. Maka ngwa metụtara HF, tụlee ihe nkiri PTFE dị ọcha kama.
Mmetụta nke okpomọkụ na nguzogide kemịkalụ
Okpomọkụ na-arụ ọrụ dị ka ihe dị mkpa na-achịkwa nguzogide kemịkal. N'ime oke okpomọkụ ọrụ ogologo oge ya (nke -70°C ruo 260°C), nkwụsi ike kemịkalụ PTFE fọrọ nke nta ka ọ ghara emetụta ya.
Otú ọ dị, okpomọkụ na-adịgide adịgide karịa 260 ° C ga-:
Nke nta nke nta belata kemịkalụ PTFE
Mee ka ihe ahụ dịkwuo mfe maka mbuze site na oke ihe ndị a kpọtụrụ aha n'elu
Mee ka mmebi ọkụ dị ngwa ngwa, na-emepụta ebe adịghị ike ebe ọgụ kemịkal nwere ike ịmalite
Aokai PTFE data ule: Na 250 ° C na-aga n'ihu ikpughe, PTFE ákwà na-ejigide>90% nke kemịkalụ eguzogide Njirimara mgbe 200 ụbọchị. Na 280 Celsius, arụmọrụ na-agbada nke ọma n'ime izu.
Maka ngwa nwere ma oke okpomoku (>260°C) yana mkpughe kemịkal, lelee data teknụzụ ma ọ bụ mee nnwale akọwapụtara ngwa.
Nchịkọta – Mgbe ịhọrọ PTFE Fabric maka gburugburu kemịkalụ
Otu kemịkalụ
PTFE Fabric Nguzogide
Ihe ndetu
Acid siri ike (H₂SO₄, HNO₃, HCl, aqua regia)
Magburu onwe
Ruo 260 ° C
Alkalis siri ike (NaOH, KOH) na okpomọkụ ụlọ
Magburu onwe
Enweghị mmebi
alkalis siri ike (NaOH, KOH) gbazere
Ekwesighi
Mwakpo n'elu 300 ° C
Organic mgbaze (niile)
Magburu onwe
Enweghị ọzịza, enweghị mgbaze
Ihe ndị na-egbochi oxidizing (H₂O₂, permanganates)
Magburu onwe
Kwụsie ike
Ọla alkali a wụrụ awụ (Na, K)
Ekwesighi
Nbibi zuru oke
Hydrofluoric acid (HF)
PTFE n'onwe ya na-eguzogide - ma fiberglass adịghị
Na-achọ mkpuchi zuru oke; jiri ihe nkiri PTFE dị ọcha ma ọ bụrụ na ejighị n'aka
Ngwakọta halogen (F₂, ClF₃) na oke okpomọkụ
Ekwesighi
Na-emeghachi omume na PTFE
Aokai PTFE na-enye akwa mkpuchi PTFE maka gburugburu kemịkalụ na-achọ. Maka ngwa chọrọ nguzogide HF ma ọ bụ njide kemịkalụ siri ike, anyị na-akwado ịnwale n'okpuru ọnọdụ arụ ọrụ ma ọ bụ jiri akara ngosi ihe nkiri PTFE dị ọcha. Kpọtụrụ anyị kemịkalụ, okpomọkụ na oge mkpughe gị maka nkwanye.
Anyị na-akwado ụkpụrụ ọrụ nke ọkachamara na iguzosi ike n'ezi ihe, ma na-agba mbọ n'ụzọ zuru ezu n'iwepụta ihe ngwọta niile na nkwado nlebara anya maka ndị ahịa niile!
