Abubuwan Polymer - PCTFE & ETFE & Kayayyakin ECTFE

PCTFE shine polymer semirystalline tare da sarkar polymer helical da crystal pseudohexagonal.PVDF da equimolar ETFE ne isomers amma karshen yana da mafi girma narkewa batu da ƙananan dielectric asarar fiye da tsohon. kama da ETFE, ECTFE terpolymers (daya termonomers) da mafi inji da abrasion da radiation juriya fiye da PTFE da sauran perfluoropolymers.

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PCTFE Properties

PCTFE shine polymer semirystalline tare da sarkar polymer helical da crystal pseudohexagonal.Girman kristal yana da spherulitic kuma ya ƙunshi sarƙoƙi na nade.Girman girman chlorine yana hana sake sakewa bayan narkewa yayin sarrafawa.Wannan guduro yana da kyawawan kaddarorin a yanayin zafi na cryogenic dangane da robobi gabaɗaya, kodayake sun fi sauran fluoropolymers ban da PVDF.

PCTFE yana da keɓaɓɓen kaddarorin shinge da juriya na sinadarai.An kai hari ta hanyar yawan kaushi na kwayoyin halitta.

PCTFE yana da ƙarancin kwanciyar hankali kuma yana ƙasƙantar da kai yayin da ya kai matsayin narkewa, yana buƙatar kulawa ta musamman yayin sarrafawa.

Abubuwan da aka bayar na ETFE

PVDF da equimolar ETFE isomers ne amma na karshen yana da mafi girma wurin narkewa da ƙananan asarar dielectric fiye da na farko.ETFE yana ƙirƙira cikin sel naúrar waɗanda aka yi imanin su zama orthorhombic ko monoclinic.Tsarin kwayoyin halitta na ETFE shine zigzag mai tsawo.An narkar da wannan polymer a cikin wasu esters masu tafasa a sama da 230 C, don haka yana ba da damar ƙayyade nauyin kwayoyin halitta (matsakaicin nauyi) ta hanyar watsawa mai haske.ETFE yana da sauye-sauye da yawa, shakatawa na alpha a 110 C (canzawa zuwa 135 C a mafi girman crystallinity), beta a 25 C, da shakatawa gamma a 120 C.

ETFE terpolymers suna da kyawawan kaddarorin inji ciki har da juriya da yanke ta hanyar juriya da ƙananan rarrafe fiye da perfluoropolymers.ETFE ya fi juriya ga radiation fiye da perfluoropolymers (wanda ya shafi su da kyau har zuwa 20 Mrad) kuma ana iya haɗa shi ta hanyar radiation kamar katako na lantarki.Ana amfani da Crosslinking don ƙarfafa juriya ta hanyar juriya na ETFE waya.

ETFE yana da dielectric akai na 2.6e3.4 da dissipation factor na 0.0006e0.010 yayin da mita ke ƙaruwa daga 102 zuwa 1010 Hz.

ETFE terpolymers suna da juriya ga fashewar damuwa da harin sinadarai ta yawancin mahadi.Acids mai ƙarfi oxidizing, mai daɗaɗɗen acid sulfonic acid, da sansanonin halitta (amines) suna kai hari ga ETFE da duk wani sinadari da ke shafar PTFE, PFA, da FEP.

Abubuwan da aka bayar na ECTFE

ECTFE shine semirystalline (50e60%) kuma yana narkewa a 240 C. Yana da hutun alpha a 140 C, beta a 90 C, da shakatawa gamma a 65 C. Tsarin ECTFE shine zigzag mai tsawo wanda ethylene da CTFE madadin.Tantanin halitta na kristal ECTFE yana da hexagonal.

Hakazalika da ETFE, ECTFE terpolymers (masu magana iri ɗaya) suna da mafi kyawun injina da abrasion da juriya na radiation fiye da PTFE da sauran perfluoropolymers.

Dielectric akai-akai na ECTFE shine 2.5e2.6, kuma mai zaman kanta daga zazzabi da mita.Matsakaicin ɓarna shine 0.02 kuma ya fi na ETFE girma.

ECTFE yana da juriya ga yawancin sinadarai in banda zafi mai zafi da kaushi mai chlorinated.Ba ya damuwa da tsagewar narke a cikin kowane kaushi.ECTFE yana da mafi kyawun kaddarorin shinge ga SO2, Cl2, HCl, da ruwa fiye da FEP da PVDF.