Nā Manaʻolana Noi a me ka Hoʻomohala ʻana o EVA ma ka ʻoihana kaula

3. 1 Hoʻohana ʻia ma ke ʻano he mea pale semi-conductive no nā kaula mana kiʻekiʻe
E like me kā kākou e ʻike nei, ʻo ka mea nui o ka mea pale he kalapona ʻeleʻele alakaʻi, i loko o ka mea kumu plastik a i ʻole ka laholio e hoʻohui i ka nui o ke kalapona ʻeleʻele e hōʻino nui i ka wai o ka mea pale a me ka laumania o ka pae extrusion. I mea e pale ai i nā hoʻokuʻu hapa i nā kaula voltage kiʻekiʻe, pono nā pale o loko a me waho e lahilahi, ʻālohilohi, ʻālohilohi a like. Ke hoʻohālikelike ʻia me nā polymers ʻē aʻe, hiki i ka EVA ke hana maʻalahi i kēia. ʻO ke kumu o kēia, ʻo ia ka maikaʻi loa o ke kaʻina hana extrusion a EVA, kahe maikaʻi, a ʻaʻole hiki ke hoʻoheheʻe ʻia ka hanana haki. Ua māhele ʻia ka mea pale i ʻelua mau ʻāpana: i wahī ʻia i loko o ke alakaʻi ma waho i kapa ʻia ʻo ka pale o loko - me ka mea pale o loko; i wahī ʻia i loko o ka insulation ma waho i kapa ʻia ʻo ka pale o waho - me ka mea pale o waho; ʻo ka mea pale o loko he thermoplastic ka hapa nui o ka mea pale o loko a ua hoʻokumu pinepine ʻia ma EVA me ka ʻike VA o 18% a 28%; ʻo ka mea pale o waho he cross-linked a hiki ke peelable a ua hoʻokumu pinepine ʻia ma EVA me ka ʻike VA o 40% a 46%.

3. 2 Nā wahie pale ahi Thermoplastic a me nā mea i hoʻopili ʻia
Hoʻohana nui ʻia ka polyolefin pale ahi thermoplastic i ka ʻoihana kaula, ʻo ia hoʻi no nā koi halogen a i ʻole halogen-free o nā kaula moana, nā kaula mana a me nā laina kūkulu kiʻekiʻe. ʻO ko lākou mahana hana lōʻihi mai 70 a 90 °C.
No nā kaula mana uila waena a me ke kiʻekiʻe o 10 kV a ʻoi aku, nona nā koi hana uila kiʻekiʻe loa, ʻo nā waiwai pale ahi e halihali nui ʻia e ka ʻūpā waho. I kekahi mau hale a i ʻole nā ​​​​papahana e koi ana i ke kaiapuni, pono nā kaula e loaʻa i ka uahi haʻahaʻa, ʻaʻohe halogen, haʻahaʻa ka ʻawahia a i ʻole haʻahaʻa ka uahi a me nā waiwai halogen haʻahaʻa, no laila he hopena kūpono nā polyolefins pale ahi thermoplastic.
No kekahi mau kumu kūikawā, ʻaʻole nui ke anawaena o waho, kū'ē i ka mahana ma 105 ~ 150 ℃ ma waena o ke kaula kūikawā, ʻoi aku ka nui o ka mea polyolefin flame retardant cross-linked, hiki ke koho ʻia kona cross-linking e ka mea hana kaula e like me kā lākou mau kūlana hana ponoʻī, ʻo ia hoʻi ke kahe kiʻekiʻe kuʻuna a i ʻole ka ʻauʻau paʻakai wela kiʻekiʻe, akā loaʻa pū kekahi ala cross-linked electron accelerator irradiation temperature room irradiation. Ua māhele ʻia kona mahana hana lōʻihi i 105 ℃, 125 ℃, 150 ℃ ʻekolu mau faila, hiki ke hana ʻia ka hale hana hana e like me nā koi like ʻole o nā mea hoʻohana a i ʻole nā ​​kūlana, halogen-free a i ʻole halogen-containing wahie barrier.
Ua ʻike maopopo ʻia he mau polymer polar non-polar a nāwaliwali paha nā polyolefins. ʻOiai ua like lākou me ka ʻaila mineral ma ke polarity, ua manaʻo nui ʻia nā polyolefins he emi ke kūpaʻa i ka ʻaila e like me ke kumumanaʻo o ka hoʻohālikelike like. Eia nō naʻe, ua ʻōlelo pū kekahi mau kūlana uwea ma ka home a ma waho e pono i nā pale cross-linked ke kūpaʻa maikaʻi i nā ʻaila, nā mea hoʻoheheʻe a hiki i nā slurries ʻaila, nā waikawa a me nā alkalis. He pilikia kēia no nā mea noiʻi mea, i kēia manawa, inā ma Kina a ma waho paha, ua hoʻomohala ʻia kēia mau mea koi, a ʻo kāna mea kumu ʻo EVA.

3. 3 Mea pale oxygen
He nui nā hakahaka ma waena o nā ʻiwi o nā kaula multi-core i hoʻopaʻa ʻia e pono e hoʻopiha ʻia e hōʻoia i kahi ʻano poepoe o ke kaula, inā hana ʻia ka hoʻopiha ʻana i loko o ka ʻūpā waho me ka pale wahie halogen-free. Hana kēia papa hoʻopihapiha ma ke ʻano he pale lapalapa (oxygen) i ka wā e ʻā ai ke kaula a no laila ua kapa ʻia ʻo ia he "pale oxygen" i ka ʻoihana.
ʻO nā koi kumu no kahi mea pale oxygen: nā waiwai extrusion maikaʻi, ka pale ahi halogen-free maikaʻi (ʻoi aku ka nui o ka oxygen index ma mua o 40) a me ke kumu kūʻai haʻahaʻa.
Ua hoʻohana nui ʻia kēia pale oxygen i ka ʻoihana kaula no nā makahiki he ʻumi a ʻoi a ua alakaʻi i nā hoʻomaikaʻi koʻikoʻi i ka pale ʻana i ka lapalapa o nā kaula. Hiki ke hoʻohana ʻia ka pale oxygen no nā kaula pale ahi halogen-free a me nā kaula pale ahi halogen-free (e laʻa me PVC). Ua hōʻike ʻia ka nui o ka hana ʻana he ʻoi aku ka nui o nā kaula me kahi pale oxygen e hala i nā hoʻāʻo puhi kū hoʻokahi a me ka puhi pūʻolo.

Mai ka manaʻo o ka hoʻohuihui ʻana o nā mea, ʻo kēia mea pale oxygen he "mea hoʻopihapiha ultra-kiʻekiʻe", no ka mea, no ka hoʻokō ʻana i ke kumukūʻai haʻahaʻa, pono e hoʻohana i kahi mea hoʻopihapiha kiʻekiʻe, no ka hoʻokō ʻana i kahi helu oxygen kiʻekiʻe pono e hoʻohui i kahi hapa kiʻekiʻe (2 a 3 mau manawa) o Mg (OH) 2 a i ʻole Al (OH) 3, a no ka hoʻopuka maikaʻi ʻana a pono e koho iā EVA ma ke ʻano he mea kumu.

3. 4 Mea uhi PE i hoʻololi ʻia
ʻO nā mea uhi polyethylene he mea maʻalahi i ʻelua mau pilikia: ʻo ka mea mua, he maʻalahi lākou i ka haki ʻana o ka heheʻe (ʻo ia hoʻi ka ʻili manō) i ka wā o ka extrusion; ʻo ka lua, he maʻalahi lākou i ka haki ʻana o ke kaiapuni. ʻO ka hopena maʻalahi loa ka hoʻohui ʻana i kahi hapa o EVA i loko o ka hoʻohuihui. hoʻohana ʻia ma ke ʻano he EVA i hoʻololi ʻia me ka hoʻohana ʻana i ka ʻike VA haʻahaʻa o ka papa, kūpono kona helu hoʻoheheʻe ma waena o 1 a 2.