Nā Waiwai Polymer – Nā Waiwai PCTFE & ETFE & ECTFE

ʻO PCTFE kahi polymer semirystalline me kahi kaulahao polymer helical a me kahi aniani pseudohexagonal.He isomers ka PVDF a me ka equimolar ETFE akā ʻoi aku ka kiʻekiʻe o ka helu heheʻe ʻana o ka hope a me ka nalowale o ka dielectric haʻahaʻa ma mua o ka mea mua.

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Nā Waiwai PCTFE

ʻO PCTFE kahi polymer semirystalline me kahi kaulahao polymer helical a me kahi aniani pseudohexagonal.He spherulitic ka ulu ʻana o ka kristal a loaʻa i nā kaulahao pelu.ʻO ka nui o ka chlorine kaohi i ka recrystallization ma hope o ka hoʻoheheʻe ʻana i ka wā e hana ai.He waiwai maikaʻi kēia resin ma nā mahana cryogenic e pili ana i nā plastics ma ke ʻano nui, ʻoiai he haʻahaʻa lākou i nā fluoropolymers ʻē aʻe koe PVDF.

Loaʻa i ka PCTFE nā waiwai pale a me ke kūpaʻa kemika maikaʻi loa.Hoʻouka ʻia e kekahi mau mea hoʻoheheʻe organik.

ʻO ka PCTFE he haʻahaʻa haʻahaʻa haʻahaʻa a hoʻohaʻahaʻa i ka hiki ʻana i kona helu heheʻe, e koi ana i ka mālama kūikawā i ka wā e hana ai.

Na Waiwai ETFE

He isomers ka PVDF a me ka equimolar ETFE akā ʻoi aku ka kiʻekiʻe o ka hoʻoheheʻe ʻana a me ka poho dielectric haʻahaʻa ma mua o ka mua.Hoʻopili ka ETFE i loko o nā pūnaewele i manaʻo ʻia he orthorhombic a monoclinic paha.He zigzag lōʻihi ka molecular conformation o ETFE.Hoʻoheheʻe ʻia kēia polymer i loko o kekahi mau esters paila ma luna o 230 C, no laila e ʻae ai i ka hoʻoholo ʻana o ke kaumaha molekala (kaumaha-kaumaha) ma ka lūlū māmā.Loaʻa i ka ETFE kekahi mau hoʻololi, alpha relaxation ma 110 C (hoʻololi i 135 C ma ka crystallinity kiʻekiʻe), beta ma 25 C, a me ka hoʻomaha gamma ma 120 C.

Loaʻa i nā terpolymers ETFE nā waiwai mechanical maikaʻi e pili ana i ka tensile a me ke kūpaʻa ʻoki a me ka kolo haʻahaʻa ma mua o ka perfluoropolymers.ʻOi aku ka pale ʻana o ka ETFE i ka radiation ma mua o nā perfluoropolymers (pili ʻia a hiki i 20 Mrad) a hiki ke hoʻopili ʻia e ka radiation e like me ke kukui uila.Hoʻohana ʻia ka crosslinking no ka hoʻoikaika ʻana i ke kūʻē ʻana o ka insulation uea ETFE.

Loaʻa i ka ETFE kahi mau dielectric o 2.6e3.4 a me ka helu dissipation o 0.0006e0.010 i ka piʻi ʻana o ke alapine mai 102 a i 1010 Hz.

Kūleʻa nā terpolymers ETFE i ka haki ʻana i ke koʻikoʻi a me ka hoʻouka ʻana i nā kemika e ka hapa nui o nā pūhui.ʻO nā ʻakika oxidizing ikaika, nā ʻakika sulfonic paila, a me nā kumu kūlohelohe (amines) e hoʻouka i ka ETFE a me nā mea kemika e pili ana i ka PTFE, PFA, a me FEP.

Nā Waiwai ECTFE

He semirystalline ka ECTFE (50e60%) a hehee ma 240 C. He alpha relaxation kona ma 140 C, he beta ma 90 C, a me ka hoomaha gamma ma 65 C. Conformation o ECTFE he zigzag lō'ihi kahi e ho'ololi ai ka ethylene a me ka CTFE.Hexagonal ka pūnaewele hui o ke aniani o ECTFE.

E like me ETFE, ʻoi aku ka maikaʻi o nā terpolymers ECTFE (nā termonomers hoʻokahi) i ka mechanical a me ka abrasion a me ka pale radiation ma mua o PTFE a me nā perfluoropolymers ʻē aʻe.

ʻO 2.5e2.6 ka dielectric mau o ECTFE, a kūʻokoʻa i ka mahana a me ka pinepine.ʻO ka helu dissipation he 0.02 a ʻoi aku ka nui ma mua o ka ETFE.

Kūleʻa ʻo ECTFE i ka hapa nui o nā kemika koe wale nō ka polar wela a me nā mea hoʻoheheʻe chlorinated.ʻAʻole ia e koʻikoʻi i ka hoʻoheheʻe ʻia i loko o nā mea hoʻoheheʻe.ʻOi aku ka maikaʻi o ka ECTFE i ka SO2, Cl2, HCl, a me ka wai ma mua o FEP a me PVDF.