He aha ka Chlorinated Polyethylene (cpe) a ma hea ia e hoʻohana ʻia ai?
ʻO ka mea hoʻopaʻa uwea o ka polyethylene argonated cpe low density polyethylene 2 silicone rubber blend he polyethylene haʻahaʻa haʻahaʻa (LDPE) a me ka polydimethylsiloxane i hoʻohuihui ʻia e ka ethyl methacrylate (EMA) (PDMS) rubber blend he mea hoʻopaʻa uwea kūpaʻa wela. Ua aʻo ʻia nā ʻano uila like ʻole, nā waiwai mechanical a me nā waiwai thermal o ka hui ʻana. Hōʻike nā hopena hiki ke hoʻohana ʻia ka hui ʻana ma ke ʻano he mea hoʻopaʻa Thermal, i hoʻohālikelike ʻia me ka mea silicone rubber, ʻoi aku ka maikaʻi o ka hana kumukūʻai.
No ka manawa lōʻihi, ua manaʻo ka poʻe he ʻano kūikawā ka silicone rubber no nā kaula ma nā ʻano wela kiʻekiʻe a me nā mahana haʻahaʻa. Eia nō naʻe, ʻo ke kumukūʻai pipiʻi o ka silicone rubber e kaupalena ana i kona laulā noi.
ʻO LDPE ka palakiko me ka nui loa ma ka ʻoihana. He haʻahaʻa ke kumukūʻai a me nā waiwai uila maikaʻi loa, no laila ua hoʻohana nui ʻia ia ma ke ʻano he polymer insulating i nā uea a me nā kaula uila waena a haʻahaʻa. ʻAʻole wale ka haʻahaʻa o ke kumukūʻai o ka LDPE akā he haʻahaʻa hoʻi ka dielectric constant a me ka loss factor, ke kū'ē kiʻekiʻe, a me nā waiwai mechanical maikaʻi loa ma lalo o ka mahana ambient o 90C, no laila ua nalowale ka hapa nui o nā rubbers synthetic, e like me ka styrene-butadiene rubber (SBR), butyl rubber (IR), neoprene (CR) a pēlā aku i kahi hapa o ka mākeke. Ke hoʻohālikelike ʻia me ka mea insulation rubber silicone, ʻo ka hui ʻana o polydimethylsiloxane (PDMS) a me LDPE he pono o ke kumukūʻai haʻahaʻa i mea e hoʻokō ai i nā papa like ʻole, Ma waho aʻe o nā koi kūikawā o nā kaula no ka hoʻoili mana, ka mana a me nā mea hana, ua hoʻomohala mau ka poʻe i nā mea insulation polymer hou. Eia nō naʻe, ʻoi aku ka kiʻekiʻe o nā waiwai mechanical a me ke kūpaʻa wela o nā mea ʻōnaehana uila haʻahaʻa-voltage (<10kV) ma mua o
ʻOi aku ka nui o nā waiwai uila.
Eia kekahi laʻana; pono i ka papa hoʻokaʻawale uwea no ka umu ahi ke kūpaʻa maikaʻi o nā waiwai mechanical i ka mahana kiʻekiʻe. Pēlā nō; ʻokoʻa nā koi no nā uwea haʻahaʻa-uahi, pale ʻaila, a me ka lapalapa. No laila, pono ke uwea i ka manawa noi e hoʻoholo i nā koi no ka hana kūikawā o ke uwea. ʻO ka hoʻohaʻahaʻa oxidative o ka rubber a me ka hoʻokumu ʻana o kahi papa oxide ma ka ʻili e hoʻonui i ka conductivity, no ka mea, ma hope o ka oxidized ʻana o ka rubber, hana ʻia kahi polarity ma waena o nā hōʻuluʻulu kalapona ʻeleʻele.
Nā Hui (e like me ka carboxyl) Hāʻawi kēia mau hui i kahi ala pōkole no nā electrons. Aia kekahi mau mea e noʻonoʻo ai i ke koho ʻana i kahi mea no kahi noi. No ka insulation uwea; ʻo kahi palena koʻikoʻi ʻo ia ka palena o ka hiki o ke au e hele ma waena o ka papa insulation. No ke au pololei (dc), ua maopopo he hiki i ka hoʻohana ʻana i nā mea kū'ē kiʻekiʻe ke hōʻemi i ka mānoanoa o ka papa insulation; no ke au alternating (ac), ua haʻahaʻa ka permittivity pili a me ka pohō.
Hoʻemi pū ka mea hoʻoheheʻe i ka mānoanoa o ka insulation.
Hiki ke hoʻololi nui ʻia ka Ethyl methacrylate (EMA) e ka silicone rubber ma ke ʻano he mea insulation me ka hoʻohana ʻana i nā hui PDMS no nā ʻano uila like ʻole, nā waiwai mechanical a me ke kūpaʻa wela.
ʻO ka pono o ka nui like me ka mea hoʻohuihui no nā hui LDPE a me PDMSA (50:50).
1. ʻŌnaehana palekana paʻa, e hoʻokuʻu ʻo CPE i ka hydrogen chloride i ka wā e hoʻomehana ʻia ai a vulcanized paha, no laila pono e hoʻohana ʻia nā mea hoʻopaʻa me ka hopena omo waikawa i loko o ke ʻano hana, e like me ka calcium stearate, barium stearate, tribasic lead sulfate a i ʻole magnesium oxide.
2. ʻŌnaehana hoʻopilikino. Hoʻohana pinepine ʻia nā mea hoʻopilikino Ester ma CPEZ, e like me ka dioctyl phthalate (DOP) a me ka dioctyl adipate (DOA). Kokoke ko lākou mau palena solubility i ko CM. Mana maikaʻi. Hiki i ka hoʻohana ʻana o DOA a me DOS i loko o ka rubber ke hāʻawi i ka rubber me ke kūpaʻa anu maikaʻi loa.
3. ʻO ka ʻōnaehana vulcanization o CPE, he ʻōpala momona ka CPE, a ʻaʻole hiki i ka ʻōnaehana vulcanization sulfur maʻamau ke vulcanize iā ia me ka maikaʻi. ʻO ka hoʻohana mua ʻana o ka ʻōnaehana vulcanization CPE ʻo ia ka ʻōnaehana thiourea, ʻo ka mea kūpono loa ʻo Na-22, akā lohi ka wikiwiki o ka vulcanization o Na-22, hana ʻelemakule maikaʻi ʻole, hoʻonohonoho compression kiʻekiʻe, a he carcinogen koʻikoʻi ʻo Na-22. Hoʻopuka ia i kahi ʻala ʻoluʻolu ʻole, a ua kaupalena ʻia kona hoʻohana ʻana ma waho.
4. ʻŌnaehana hoʻopihapiha hoʻoikaika, ʻo CPE kahi ʻano rapa hoʻoikaika ʻole iā ia iho, e pono ai kahi ʻōnaehana hoʻoikaika e hoʻokō i ka ikaika ʻoi aku ka maikaʻi. Ua like kona ʻōnaehana hoʻopihapiha hoʻoikaika me ke ʻano o ka mea hoʻopili maʻamau. ʻO ka mea hoʻoikaika he kalapona ʻeleʻele a me ke kalapona ʻeleʻele keʻokeʻo. Hiki i ke kalapona ʻeleʻele keʻokeʻo ke hoʻomaikaʻi i ke kūpaʻa haehae o CPE, a hiki ke hana i kahi ʻōnaehana keʻokeʻo metamethyl e hoʻomaikaʻi i ka hoʻopili ʻana ma waena o CPE a me ka iwi iwi. hui pū. Loaʻa i ka CPE kahi waiwai hoʻopihapiha kiʻekiʻe, a ʻo ka ʻōnaehana hoʻopihapiha e pili nui ana i ka calcium carbonate, ka pauka talcum, ka pālolo, a pēlā aku.
Ka manawa hoʻouna: Ian-05-2023
