Izakhiwo ze-Polymer - I-PCTFE & ETFE & ECTFE Properties

I-PCTFE iyi-polymer e-semicrystalline enochungechunge lwe-polymer ye-helical kanye nekristalu eyi-pseudohexagonal.I-PVDF kanye ne-equimolar ETFE ama-isomer kodwa lena yakamuva inephuzu elincibilikayo eliphakeme kanye nokulahlekelwa kwe-dielectric okuphansi kuneyangaphambili.Ngokufana ne-ETFE, ama-terpolymers e-ECTFE (ama-temonomers afanayo) anokumelana okungcono komshini nokuhuzuka kanye nemisebe kune-PTFE namanye ama-perfluoropolymers.

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Izakhiwo ze-PCTFE

I-PCTFE iyi-polymer e-semicrystalline enochungechunge lwe-polymer ye-helical kanye nekristalu eyi-pseudohexagonal.Ukukhula kwekristalu kuyi-spherulitic futhi kunamaketango agoqiwe.Ubukhulu obukhulu be-chlorine buvimbela ukuvuselelwa kabusha ngemva kokuncibilika ngesikhathi sokucubungula.Le resin inezakhiwo ezinhle emazingeni okushisa e-cryogenic ahlobene namapulasitiki ngokuvamile, nakuba angaphansi kwamanye ama-fluoropolymers ngaphandle kwe-PVDF.

I-PCTFE inezici zokuvimbela ezehlukile kanye nokumelana namakhemikhali okuhle kakhulu.Ihlaselwa yizincibilikisi eziningi eziphilayo.

I-PCTFE inokusimama okushisayo okuphansi futhi iyancipha lapho ifika endaweni yayo yokuncibilika, edinga ukunakekelwa okukhethekile ngesikhathi sokucubungula.

Izakhiwo ze-ETFE

I-PVDF kanye ne-equimolar ETFE ama-isomer kodwa yakamuva inephuzu lokuncibilika eliphakeme kanye nokulahlekelwa okuphansi kwe-dielectric kunangaphambili.I-ETFE icwebezela kumaseli eyunithi okukholelwa ukuthi i-orthorhombic noma i-monoclinic.I-molecular conformation ye-ETFE iyi-zigzag enwetshiwe.Le polymer incibilika kwamanye ama-ester abilayo ngaphezu kuka-230 C, ngaleyo ndlela ivumela ukunqunywa kwesisindo samangqamuzana (isisindo-isilinganiso) ngokusabalalisa ukukhanya.I-ETFE inezinguquko ezimbalwa, ukuphumula kwe-alpha ku-110 C (kushintshela ku-135 C ku-crystallinity ephakeme), i-beta ku-25 C, kanye nokuphumula kwe-gamma ku-120 C.

Ama-terpolymers e-ETFE anezakhiwo ezinhle zomshini ezihlanganisa ukumelana nokushuba nokusika kanye nokukhasa okuphansi kune-perfluoropolymers.I-ETFE imelana kakhulu nemisebe kune-perfluoropolymers (ithinteke ngokuzithoba kuze kufike ku-20 Mrad) futhi ingaxhunyaniswa ngemisebe efana ne-electron beam.I-Crosslinking isetshenziselwa ukuqinisa ukumelana nokunqanyulwa kwe-ETFE wire insulation.

I-ETFE ine-dielectric constant ye-2.6e3.4 kanye ne-dissipation factor engu-0.0006e0.010 njengoba imvamisa ikhuphuka isuka ku-102 iye ku-1010 Hz.

Ama-terpolymers e-ETFE amelana nokuqhekeka kwengcindezi nokuhlaselwa kwamakhemikhali ngamakhompiyutha amaningi.Ama-acid oxidizing aqinile, ama-sulfonic acid abilayo agxilile, nezisekelo eziphilayo (ama-amines) ahlasela i-ETFE nanoma imaphi amakhemikhali athinta i-PTFE, PFA, ne-FEP.

Izakhiwo ze-ECTFE

I-ECTFE i-semicrystalline (50e60%) futhi incibilika ku-240 C. Inokuphumula kwe-alpha ku-140 C, i-beta ku-90 C, kanye nokuphumula kwe-gamma ku-65 C. Ukuhambisana kwe-ECTFE i-zigzag enwetshiwe lapho i-ethylene ne-CTFE zishintshana khona.Iyunithi yeseli yekristalu ye-ECTFE ine-hexagonal.

Ngokufanayo ne-ETFE, ama-terpolymers e-ECTFE (ama-temonomers afanayo) anokumelana okungcono komshini nokuhuzuka kanye nemisebe kune-PTFE namanye ama-perfluoropolymers.

I-Dielectric constant ye-ECTFE ingu-2.5e2.6, futhi ayixhomekile ezingeni lokushisa nokubanda.Isici sokulahla singu-0.02 futhi sikhulu kakhulu kune-ETFE.

I-ECTFE imelana namakhemikhali amaningi ngaphandle kwezincibilikisi ezishisayo ze-polar kanye ne-chlorinated.Ayigcizeleli ukuncibilika kwe-crack kunoma yiziphi izincibilikisi.I-ECTFE inezimfanelo ezingcono zokuvimba ku-SO2, Cl2, HCl, namanzi kune-FEP ne-PVDF.