Njikọ Fluoropolymer Monomer: Tetrafluoroethylene, Hexafluoropropylene, Perfluoroalkyl Vinyl Ethers, Chlorotrifluoroethylene, Vinylidene Fluoride, Vinyl Fluoride.
Njirimara nke Tetrafluoroethylene
Tetrafluoroethylene bụ enweghị agba, enweghị isi, enweghị ụtọ, gas na-adịghị egbu egbu nke na-esi na 76.3 C wee gbazee na 142.5 C. Okpomọkụ dị egwu na nrụgide nke TFE bụ 33.3 C na 3.92 MPa.A na-echekwa TFE dị ka mmiri mmiri;uzuoku mgbali na 20 C bụ 1 MPa.A na-akọ na okpomọkụ nke nhazi ya bụ 151.9 kcal / mole.Polymerization nke TFE bụ nnukwu exothermic ma na-emepụta 41.12 kcal / mole heatd nke enwere ike iji ya tụnyere okpomọkụ nke polymerization nke vinyl chloride na styrene, na 23-26 kcal / mole na 16.7 kcal / mole, n'otu n'otu.
Nchekwa nchekwa nke TFE chọrọ ikuku oxygen ya na-erughị 20 ppm.Ekwesịrị ịchịkwa okpomọkụ na nrụgide n'oge nchekwa ya.Ịbawanye okpomọkụ, karịsịa na nrụgide dị elu, nwere ike ịmalite deflagration na enweghị ikuku (TFE degrades n'ime carbon tetrafluoride).N'ebe ikuku ma ọ bụ oxygen nọ, TFE na-emepụta ngwakọta ihe mgbawa na pasent 14-43%.Mwepu nke ngwakọta nke TFE na oxygen nwere ike ime ka nrụgide kachasị elu ruo 100 ugboro nrụgide mbụ.
Njirimara nke Hexafluoropropylene
Hexafluoropropylene bụ ihe na-enweghị agba, enweghị isi, enweghị ụtọ, na obere gas na-egbu egbu, nke na-esi na 29.4 C na friza na 156.2 C. N'ihe ngosi nke awa 4, ntinye nke 3000 ppm kwekọrọ na LC50 na oke.Ọnọdụ okpomọkụ dị egwu na nrụgide nke HFP bụ 85 C na 3254 MPa.N'adịghị ka TFE, HFP kwụsiri ike n'ihe gbasara autopolymerization na enwere ike ịchekwa ya na ọnọdụ mmiri mmiri na-enweghị mgbakwunye nke telogen.HFP na-ekpo ọkụ ruo 400e500 C. N'ihe dị ka 600 C n'okpuru oghere, ọ na-emepụta ma mepụta octafluoro-2-butene (CF3CF¼CFCF3) na octa-fluoroisobutylene.
Njirimara nke Perfluoroalkyl Vinyl Ethers
Perfluoroalkyl vinyl ethers (PAVE) na-etolite otu klas dị mkpa nke monomers n'ihi na ha bụ ndị na-ahụ maka nhọrọ maka "mgbanwe" nke akụrụngwa nke homofluoropolymers na mgbakwunye na iji usoro nke copolymers nke TFE.Ọdịmma nke PAVE dị ka ndị na-agbanwe HFP bụ nkwụsi ike ọkụ ha dị ịrịba ama.Ihe atụ dị mkpa maka azụmahịa bụ per-fluoropropyl vinyl ether (PPVE).PPVE bụ mmiri mmiri na-enweghị isi na-enweghị isi na okpomọkụ.Ọ na-ere ọkụ nke ukwuu ma na-ere ọkụ na-enweghị ụcha.Ọ dị obere nsi karịa HFP.
Njirimara nke Chlorotrifluoroethylene
Chlorotrifluoroethylene bụ gas na-enweghị ụcha n'ime ụlọ okpomọkụ na nrụgide.Ọ na-egbu egbu na LC50 (oke) na mkpughe awa 4 yana ntinye nke 4000 ppm.Ọ nwere oke okpomọkụ na nrụgide nke 105.8 C na 4.03 MPa.Oxygen na mmiri mmiri CTFE na-emeghachi omume ma na-etolite peroxides na obere okpomọkụ.A na-emepụta ọtụtụ ngwaahịa oxygenated, dị ka chlorodifluoroacetylfluoride, site na oxidation nke CTFE.Otu mmeghachi omume ahụ nwere ike ime fotochemically na akụkụ vapor.Chlorotrifluoroethylene oxide bụ ihe sitere na mmeghachi omume a.Ndị peroxides na-arụ ọrụ dị ka ihe mmalite maka polymerization nke CTFE, nke nwere ike ime n'ike.
Njirimara nke Vinylidene Fluoride
Vinylidene fluoride, (CH2¼CF2), bụ [49] na-ere ọkụ ma bụrụ gas dị n'ime ụlọ okpomọkụ.Ọ bụ enweghị agba na ọ fọrọ nke nta ka ọ bụrụ isi na esi na 84 C. VDF nwere ike ịmepụta ngwakọta ihe mgbawa na ikuku.Polymerization nke gas a bụ nke ukwuu exothermic na-ewere ọnọdụ n'elu ya oké egwu okpomọkụ na nrụgide.
Njirimara nke Vinyl Fluoride
Vinyl fluoride (75-02-5) (fluoroethene) bụ gas na-enweghị agba na ọnọdụ gburugburu.Ọ na-ere ọkụ na ikuku n'etiti oke 2.6 na 22% site na olu.Obere ọkụ ọkụ ọkụ maka VF na ngwakọta ikuku bụ 400 C. Ịtinye ọnụọgụ ọnụọgụ (<0.2%) nke terpenes dị irè iji gbochie polymerization nke VF.Ngalaba Ụgbọ njem US ekewapụtala VF amachibidoro dị ka gas na-ere ọkụ.
Oge nzipu: Mee-10-2018