PCTFE inonzi semicrystalline polymer ine helical polymer chain uye pseudohexagonal crystal.PVDF uye equimolar ETFE isomers asi iyo yekupedzisira ine yakanyanya kunyunguduka uye yakaderera dielectric kurasikirwa kupfuura yekare.Kufanana neETFE, ECTFE terpolymers (same termonomers) ine zviri nani mechanical uye abrasion uye neradiation resistance pane PTFE nemamwe maperfluoropolymers.
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PCTFE Properties
PCTFE inonzi semicrystalline polymer ine helical polymer chain uye pseudohexagonal crystal.Kukura kweCrystal ndeye spherulitic uye ine cheni dzakapetwa.Saizi yakakura yeklorini inomanikidza recrystallization mushure mekunyunguduka panguva yekugadziriswa.Iyi resin ine zvinhu zvakanaka pakushisa kwe cryogenic maererano nemapurasitiki muhuwandu, kunyange zvazvo ari pasi kune mamwe mafluoropolymers kunze kwePVDF.
PCTFE ine yakasarudzika zvipingamupinyi zvivakwa uye yakanakisa makemikari kuramba.Inorwiswa nehuwandu hwezvinonyungudutsa.
PCTFE ine yakaderera thermal kugadzikana uye inodzikisira payasvika pakunyungudika kwayo, inoda kutarisirwa kwakakosha panguva yekugadziriswa.
ETFE Properties
PVDF uye equimolar ETFE isomers asi iyo yekupedzisira ine nzvimbo yakakwira yekunyungudika uye yakaderera dielectric kurasikirwa pane yekutanga.ETFE inopenya mumasero eyuniti anotendwa kuva orthorhombic kana monoclinic.Iyo molecular conformation yeETFE ndeye yakawedzera zigzag.Iyi polima inonyungudutswa mune mamwe maesita ari kufashaira ari pamusoro pe230 C, nokudaro zvichibvumira kutsunga kwehuremu hwemamorekuru (huremu-avhareji) nekupararira kwechiedza.ETFE ine shanduko dzakati wandei, alpha relaxation pa110 C (shifts to 135 C at higher crystallinity), beta pa25 C, uye gamma relaxation pa120 C.
ETFE terpolymers ine yakanaka mechanical zvivakwa zvinosanganisira tensile uye kucheka-kuburikidza nekudzivirira uye kuderera kunokambaira pane perfluoropolymers.ETFE inonyanya kurwisa radiation kupfuura perfluoropolymers (ine mwero yakakanganiswa kusvika ku20 Mrad) uye inogona kuyambuka nemwaranzi senge electron beam.Crosslinking inoshandiswa kusimbisa kucheka-kuburikidza nekupokana kweETFE waya insulation.
ETFE ine dielectric constant ye2.6e3.4 uye dissipation factor ye 0.0006e0.010 sezvo frequency inowedzera kubva ku102 kusvika ku1010 Hz.
ETFE terpolymers inopesana nekushungurudzika kuputsa uye kurwiswa kwemakemikari nemakomponi mazhinji.Yakasimba oxidizing acids, yakanyanyisa kuvira sulfonic acids, uye organic bases (amines) inorwisa ETFE uye chero makemikari anokanganisa PTFE, PFA, uye FEP.
ECTFE Properties
ECTFE is semicrystalline (50e60%) uye inonyunguduka pa 240 C. Iine alpha relaxation pa 140 C, beta pa 90 C, uye gamma relaxation pa 65 C. Conformation yeECTFE inonzi zigzag yakawedzerwa umo ethylene uye CTFE inoshandura.Iyo unit cell yeECTFE's crystal ine hexagonal.
Zvakafanana neETFE, ECTFE terpolymers (materonomers akafanana) ane zvirinani mechanical uye abrasion uye radiation resistance pane PTFE nemamwe maperfluoropolymers.
Dielectric nguva dzose yeECTFE ndeye 2.5e2.6, uye yakasununguka kune tembiricha uye frequency.Dissipation factor ndeye 0.02 uye yakakura kudarika ETFE's.
ECTFE inoshingirira kumakemikari mazhinji kunze kwekupisa polar uye chlorinated solvents.Haisimbise crack dissolve mune chero zvinonyungudutsa.ECTFE ine zvipingamupinyi zviri nani kuSO2, Cl2, HCl, uye mvura kupfuura FEP nePVDF.
Nguva yekutumira: Mar-14-2018