Polytetralluehylene (PFA) vs. Polytetralluehylene (PTFE)

1. Ihe Odide Na Na Na:

PFA Incorporates Okeoroooroorocoxy, nke ya na otu n'ime atọm nke fluorine site na psfeoroooooxy. A na-etinye carbon ozugbo na oxygen, ma mgbe ahụ, a na-etinye oxygen dị ka oxygen dị ka pinterluooomethyl ma ọ bụ nke ire. E jiri ya tụnyere PTFE, ọ na-ebelata viccosity ma na-emekwa nhazi. Ihe ndị ọzọ na akụrụngwa na PTFE abụghị nnukwu ọdịiche.

2. Ihe dị iche na ngwa:

PFA nwere otu ihe dị mma dịka PTFE, mana enwere ike ịhazi ọkụ na usoro nhazi nke resins nkịtị. A na-emepụta ya site na coploarmizing ptfe na perluoproppy vinyl nwere ụfọdụ ihe na-ajụ oyi na-enweghị atụ ma na-ele anya dị ka ihe na-acha ọcha. Ọ bụghị naanị na otu ọnọdụ ọrụ dị ka PTFE, kamakwa ike ọrụ dị mma na 250 ℃ (ihe dị ka 2 ~ 3 ~ 3 na ike nrụgide nrụgide siri ike. O nwere oke nhazi na ịkpụzi arụmọrụ, adabara maka ịkpụzikọ, ewepụta, ịkpụgharị ọgwụ, na-ebugharị na usoro ndị ọzọ. Enwere ike iji ya mee ka waya ma jiri eriri na-eme ka akụkụ ya dị elu, na-eme ka eriri dị elu, na-eguzogide eriri na-eguzogide ya na kemịkalụ kemịkalụ, valves na pọmpụ; Akụkụ ndị ọzọ dị iche iche maka ụlọ ọrụ igwe, ihe mgbochi dị iche iche maka ụlọ ọrụ dị ọkụ, yana polytetralluethyylene na-agbakwunye mkpanaka. A na-eme ya site na ịmịpụta ptfe a na-egbu egbu, na ọdịdị nke milky na-acha ọcha, dị larịị, dị larịị, na ngalaba edo edo. A na-eji ya eji eme ihe ptfe plate na ọkpọkọ, nke mere na ngwaahịa PTFE nwere ụdị dị mfe nwere ike ịgwọ ya na ngwaahịa na ụdị dị mgbagwoju anya. A na - enweta mkpọsa mmiri site na ịgbakwunye emulsifier na mmegharị kokoyymerization nke ptfe na otherluopy vinyl ether, ma lekwasị anya na ụfọdụ okpomọkụ. Ọdịnaya siri ike bụ 30% ± 1%. Ọdịdị bụ milky na-acha ọcha ma ọ bụ ìhè na-acha odo odo. Ọ nwere ọtụtụ ihe dị iche iche nke PTFE Ringin. Enwere ike iji ya ogologo oge na 260 ℃, na arụmọrụ ya dị oke mma, a na-eme ihe dị mfe, ma na-eji ọnụ ọgụgụ dị ukwuu na ụlọ ọrụ nri dị ka Anc-Assasive, ihe mgbochi corrosion.

PTFE - polytetraflulluethylene nke tetraforlizathylene momomer momerylene site na nkwusioru ma obu gbasaa. Ibu molecular = 5.2 × 10-5-5-5-5.5 × 107, ntụ ntụ, 75% nke nzube 400, enweghị isi, ndị na-enweghị atụ. Devents donsetive 2.1-2.3, reacgacting index 1.37, otu iko ntụgharị okpomọkụ 327 ℃, ọkụ ọkụ na-acha uhie uhie 415 ℃. Na 400 ℃ n'elu trace nke oke ibu na ndozi nke gas na-egbu egbu. Jiri okpomoku -250 ~ 260 ℃, na 210 ℃ Jiri 10,000 h. Ezigbo ntuli aka ọgwụgwụ, na-eguzogide acid ọ bụla siri ike), alkali siri ike, na-enweghị isi na esemokwu, dị mma na-emegide esemokwu, dị mma na-emegide esemokwu na-ete. Ezigbo mmegide na-eguzogide. Ngwongwo eletriki mara mma, nguzogide arc. Na-abụghị nke nnyapade, ihe fọrọ nke nta ka ọ bụrụ ihe niile nke nnyapade enweghị ike ịgbaso elu ya, kpamkpam na-enweghị mgbagwoju anya. O nwere aha "rọbara" rọba ". Ike Tenle (MPA)> Elongation (%)> 250.

3. Nhazi Nhazi:

Isi ihe dị iche na nhazi bụ na PFA nwere ike ịkpụ ọkụ na-ekpo ọkụ na-ekpo ọkụ na-ekpo ọkụ, ebe PTFE enweghị ike ịkpụ ọkụ.

Ihe a dị n'elu bụ mmeghe nke ọdịiche dị n'etiti PFA na PTFE .

Ruo ogologo oge, achọwo PTFE achọpụtara site na ụlọ ọrụ n'ihi akụrụngwa anụ ahụ na kemịkal. Agbanyeghị, erughị eru nke usoro nhazi ya kpatara ọtụtụ sayensị na ndị injinia na-ata ahụhụ nke ukwuu. N'ikpeazụ, mgbe iwebata PFA ruo n'ahịa ahụ, natara ụlọ ọrụ plastik ọhụụ chọrọ - mgbe ọ gachara. Ihe a, ya na akụrụngwa yiri nke PTFE, nwere ezigbo nhazi Njirimara, si otú a na-edozi nsogbu ndị injinia.