PVDF na-eguzogide ọtụtụ kemịkalụ organic na inorganic gụnyere ihe mgbaze chlorinated.Poly (vinyl fluoride) bụ polymer semirystalline nwere atụmatụ, zigzag conformation.Ogo nke crystallinity nwere ike ịdịgasị iche site na 20 ruo 60% ma bụrụkwa ọrụ nke arụrụ arụrụ arụ.
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Njirimara PVDF
Polyvinylidene fluoride bụ polymer semirystalline (35e70% crystallinity) nke nwere eriri zigzag gbatịrị agbatị. Mgbakwunye isi na ọdụ nke VDF na-achịkwa ma enwere ntụpọ isi ma ọ bụ ọdụ ọdụ na-emetụta crystallinity na ihe onwunwe nke PVDF.
PVDF nwere ọtụtụ ntụgharị na njupụta ya na-agbanwe maka steeti polymorph ọ bụla.Enwere steeti anọ amaara atụpụtara, aha ya dịka a, b, g na d.Usoro a na-ahụkarị bụ a-PVDF nke na-egosipụta ntụgharị na 70 C (g), 38 C (b), 50 C (a") na 100 C (a').
PVDF na-eguzogide ọtụtụ kemịkalụ organic na inorganic gụnyere ihe mgbaze chlorinated.Ntọala siri ike, amines, esters, na ketones na-awakpo resin a.Mmetụta sitere na ọzịza ruo na mgbasa zuru oke na ihe mgbaze ndị a dabere na ọnọdụ.PVDF gosipụtara ndakọrịta na ọtụtụ polymers.Ngwakọta bara uru na azụmaahịa na acrylics na methacrylic ka emepụtarala.
PVDF, dị ka ETFE, na-agafe ngwa ngwa n'ihi ikpughe na radieshon.Radiation (ụzarị gamma) nwere mmetụta pere mpe na akụrụngwa arụ ọrụ nke PVDF.
Njirimara PVF
Poly (vinyl fluoride) bụ polymer semirystalline nwere atụmatụ, zigzag conformation.Ogo nke crystallinity nwere ike ịdịgasị iche site na 20 ruo 60% ma bụrụkwa ọrụ nke arụrụ arụrụ arụ.PVF azụmahịa bụ ihe na-adịghị mma, nwere ihe dị ka 12% njikọ isi na isi, ma gosipụta ebe mgbaze kacha elu nke ihe dịka 190 C.
PVF na-egosiputa ọtụtụ ntụgharị n'okpuru okpomọkụ na-agbaze.Lower Tg na-apụta na 15 ruo 20 C na elu Tg dị na 40e50 C.Mgbanwe abụọ ọzọ na 80 C na 150 C ka akọpụtala.
PVF nwere obere solubility na ihe mgbaze niile dị n'okpuru ihe dị ka 100 C. A na-akwadebe polymers na solubility dị ukwuu site na iji 0.1% 2-propanol polymerization modifier ma mara na N, N-dimethylformamide ngwọta nwere 0.1 N LiBr.Mn sitere na 76,000 ruo 234,000 (osmometry), na Nwada sitere na 143,000 ruo 654,000 (ọsọ sedimentation).
A na-akọ na ịdị arọ molekụla dị elu PVF na-eweda n'ime ikuku na-adịghị, yana mfu HF na mgbawa azụ na-eme n'otu oge na ihe dịka 450 C. N'ikuku, ọnwụ HF na-apụta na ihe dịka 350 C, na-esote ọkpụkpụ azụ gburugburu 450 C.
PVF na-apụta ìhè na radieshon na mpaghara UV, nke a na-ahụ anya na nke dị nso na infrared, na-ebufe 90% nke radieshon site na 350 ruo 2500 nm.PVF na-akụda mmụọ mgbe mkpughe na radieshon elektrọn-beam nke 1000 Mrad mana ọ na-egbochi ndakpọ na obere doses.Ọ na-ejigide ike ya na 32 Mrad ebe PTFE na-eweda ya na 0.2 Mrad.
Igwe ọkụ ọkụ nke onwe nke ihe nkiri PVF bụ 390 C. Oghere oxygen na-egbochi (LOI) maka PVF bụ 22.6%.A na-emepụta HF na ngwakọta nke aromatic na aliphatic hydrocarbons site na mmebi okpomọkụ nke PVF.
Oge nzipu: Eprel-04-2018