PCTFE ke polymer ea semicrystalline e nang le ketane ea helical polymer le kristale ea pseudohexagonal.PVDF le equimolar ETFE ke li-isomers empa tsa morao-rao li na le ntlha e phahameng ea ho qhibiliha le tahlehelo e tlaase ea dielectric ho feta ea pele.Ho tšoana le ETFE, ECTFE terpolymers (li-termonomers tse tšoanang) li na le mekhoa e metle ea mechine le ea abrasion le mahlaseli a mahlaseli ho feta PTFE le li-perfluoropolymers tse ling.
![Lintho tsa Polymer](/uploads/"090939.jpg")
.
Lisebelisoa tsa PCTFE
PCTFE ke polymer ea semicrystalline e nang le ketane ea helical polymer le kristale ea pseudohexagonal.Khōlo ea kristale e spherulitic 'me e na le liketane tse phuthoang.Boholo bo boholo ba chlorine bo thibela recrystallization ka mor'a ho qhibiliha nakong ea ts'ebetso.Resin ena e na le thepa e ntle ho mocheso oa cryogenic o amanang le li-plastiki ka kakaretso, le hoja li le tlaase ho tse ling tsa fluoropolymers ntle le PVDF.
PCTFE e na le thepa e ikhethang ea litšitiso le khanyetso e ntle ea lik'hemik'hale.E hlaseloa ke metsoako e mengata ea tlhaho.
PCTFE e na le botsitso bo tlase ba mocheso mme e senyeha ha e fihla sebakeng sa eona sa ho qhibiliha, e hlokang tlhokomelo e khethehileng nakong ea ts'ebetso.
Thepa ea ETFE
PVDF le equimolar ETFE ke li-isomers empa tsa morao-rao li na le sebaka se phahameng sa ho qhibiliha le tahlehelo e tlase ea dielectric ho feta ea pele.ETFE e khanya ka har'a lisele tsa yuniti tse lumeloang hore ke orthorhombic kapa monoclinic.Motsoako oa molek'hule oa ETFE ke zigzag e atolositsoeng.Polymer ena e qhibiliha ka li-ester tse ling tse belang ka holimo ho 230 C, kahoo e lumella ho tseba boima ba molek'hule (boima-karolelano) ka ho hasanya ha leseli.ETFE e na le liphetoho tse 'maloa, ho phomola ha alpha ho 110 C (ho fetoha ho 135 C ho crystallinity e phahameng), beta ho 25 C, le ho phomola ha gamma ho 120 C.
Li-terpolymers tsa ETFE li na le thepa e ntle ea mochini e kenyelletsang ho tsieleha le ho hanyetsa le ho theoha ho tlase ho feta li-perfluoropolymers.ETFE e hanyetsana le mahlaseli ho feta perfluoropolymers (e amehang ka mokhoa o itekanetseng ho fihlela ho 20 Mrad) 'me e ka tšeloa ka mahlaseli a kang electron beam.Crosslinking e sebelisetsoa ho matlafatsa khanyetso ea terata ea ETFE.
ETFE e na le dielectric constant 2.6e3.4 le dissipation factor of 0.0006e0.010 ha maqhubu a eketseha ho tloha 102 ho ea 1010 Hz.
Li-terpolymers tsa ETFE li hanana le khatello ea maikutlo le tlhaselo ea lik'hemik'hale ke metsoako e mengata.Li-acid tse matla tsa oxidizing, li-concentrated beiling sulfonic acids, le li-organic bases (amines) li hlasela ETFE le lik'hemik'hale leha e le life tse amang PTFE, PFA, le FEP.
Thepa ea ECTFE
ECTFE ke semicrystalline (50e60%) mme e qhibiliha ho 240 C. E na le ho phomola ha alpha ho 140 C, beta ho 90 C, le ho phomola ha gamma ho 65 C. Conformation ea ECTFE ke zigzag e atolositsoeng eo ethylene le CTFE li fapanyetsanang.Sele ea yuniti ea kristale ea ECTFE e hexagonal.
Ho tšoana le ETFE, li-terpolymers tsa ECTFE (li-termonomers tse tšoanang) li na le lik'hemik'hale tse ntle le tse senyang le ho hanyetsa mahlaseli ho feta PTFE le li-perfluoropolymers tse ling.
Dielectric constant tsa ECTFE ke 2.5e2.6, mme e ikemetse ka mocheso le maqhubu.Dissipation factor ke 0.02 mme e kholo ho feta ea ETFE.
ECTFE e hanana le lik'hemik'hale tse ngata ntle le li-solvents tse chesang le tse nang le chlorinated.Ha e hatise ho qhibiliha ha crack ho lihlapolli leha e le life.ECTFE e na le litšitiso tse betere ho SO2, Cl2, HCl, le metsi ho feta FEP le PVDF.
Nako ea poso: Mar-14-2018