Ke Kaʻina Hana Hoʻōla UV & EB

ʻO ka hoʻōla ʻana o UV & EB ka wehewehe maʻamau i ka hoʻohana ʻana i ke kukuna electron (EB), ultraviolet (UV) a i ʻole ke kukui ʻike ʻia e polymerize i ka hui pū ʻana o nā monomers a me nā oligomers ma luna o kahi substrate. Hiki ke hoʻohui ʻia ka mea UV & EB i loko o kahi ʻīnika, uhi, mea hoʻopili a i ʻole huahana ʻē aʻe. Ua kapa ʻia ke kaʻina hana ʻo ka radiation curing a i ʻole radcure no ka mea he mau kumu ikehu radiant ʻo UV a me EB. ʻO nā kumu ikehu no ka hoʻōla ʻana o UV a i ʻole ke kukui ʻike ʻia he mau kukui mercury medium pressure, nā kukui xenon pulsed, nā LED a i ʻole nā ​​​​laser. ʻO EB - ʻaʻole like me nā photons o ke kukui, ka mea e komo pinepine ʻia ma ka ʻili o nā mea - loaʻa iā ia ka hiki ke komo i loko o nā mea.
ʻEkolu mau kumu hoʻoikaika e hoʻololi ai i ka ʻenehana UV & EB
Ka Mālama Ikehu a me ka Hoʻomaikaʻi ʻana i ka Hana: ʻOiai ʻo ka hapa nui o nā ʻōnaehana he mea hoʻoheheʻe ʻole a ʻaʻole pono ma mua o hoʻokahi kekona o ka hōʻike ʻana, hiki ke nui loa ka loaʻa ʻana o ka hana i hoʻohālikelike ʻia me nā ʻano hana uhi maʻamau. ʻO ka wikiwiki o ka laina pūnaewele o 1,000 ft/min. he mea maʻamau a ua mākaukau koke ka huahana no ka hoʻāʻo ʻana a me ka hoʻouna ʻana.

Kūpono no nā Substrates Sensitive: ʻAʻole i loko o ka hapa nui o nā ʻōnaehana ka wai a i ʻole ka mea hoʻoheheʻe. Eia kekahi, hāʻawi ke kaʻina hana i ka mana piha o ka mahana hoʻōla e kūpono ai no ka hoʻopili ʻana ma nā substrates consistency wela.

Hoʻolālā Kaiapuni a me ka Mea Hoʻohana: ʻAʻohe mea hoʻoheheʻe i nā mea i hoʻohui ʻia no laila ʻaʻole hopohopo nā hoʻokuʻu ʻana a me ka lapalapa ʻana. Hoʻohālikelike nā ʻōnaehana hoʻōla māmā me ka aneane o nā ʻano hana noi āpau a koi i kahi liʻiliʻi o ka wahi. Hiki ke hoʻokomo pinepine ʻia nā kukui UV ma nā laina hana e kū nei.

Nā ʻano hana ho'ōla UV & EB
ʻO nā Monomers nā poloka hale maʻalahi loa mai kahi e hana ʻia ai nā mea organik synthetic. ʻO kahi monomer maʻalahi i loaʻa mai ka hānai petroleum ʻo ia ka ethylene. Hōʻike ʻia e: H2C=CH2. ʻO ka hōʻailona "=" ma waena o nā ʻāpana ʻelua a i ʻole nā ​​​​atoma o ke kalapona e hōʻike ana i kahi reactive a i ʻole, e like me ka ʻōlelo a nā chemists, he "pilina pālua" a i ʻole unsaturation. ʻO ia nā pūnaewele e like me kēia e hiki ke pane e hana i nā mea kemika nui a nui aʻe paha i kapa ʻia ʻo oligomers a me polymers.

ʻO ka polymer kahi hui o nā ʻāpana hana hou he nui (ʻo ia hoʻi poly-) o ka monomer like. ʻO ka huaʻōlelo oligomer kahi huaʻōlelo kūikawā i hoʻohana ʻia e kuhikuhi i kēlā mau polymers i hiki ke hoʻopili hou ʻia e hana i kahi hui nui o nā polymers. ʻO nā wahi unsaturation ma nā oligomers a me nā monomers wale nō ʻaʻole e hana i kahi hopena a i ʻole crosslinking.

I ke ʻano o ka hoʻōla ʻana o ke kukuna uila, pili pololei nā electrons ikehu kiʻekiʻe me nā ʻātoma o ka wahi unsaturated e hana i kahi molekala reactive kiʻekiʻe. Inā hoʻohana ʻia ka UV a i ʻole ke kukui ʻike ʻia ma ke ʻano he kumu ikehu, hoʻohui ʻia kahi photoinitiator i ka hui ʻana. ʻO ka photoinitiator, i ka wā e hōʻike ʻia ai i ka mālamalama, hoʻopuka i ka radical manuahi a i ʻole nā ​​​​hana e hoʻomaka ai i ka crosslinking ma waena o nā wahi unsaturation. nā mea o UV & ude

ʻO nā Oligomers: ʻO nā waiwai holoʻokoʻa o kekahi uhi, ʻīnika, mea hoʻopili a mea hoʻopaʻa paha i hoʻopili ʻia e ka ikehu radiant e hoʻoholo nui ʻia e nā oligomers i hoʻohana ʻia i ka hoʻohuihui ʻana. ʻO nā Oligomers he mau polymers kaumaha molekala haʻahaʻa haʻahaʻa, ʻo ka hapa nui o ia mau mea e pili ana i ka acrylation o nā ʻano like ʻole. Hāʻawi ka acrylation i ka unsaturation a i ʻole ka hui "C=C" i nā wēlau o ka oligomer.

Nā Monomers: Hoʻohana nui ʻia nā Monomers ma ke ʻano he mea hoʻoheheʻe e hoʻohaʻahaʻa i ka viscosity o ka mea i hoʻōla ʻole ʻia e maʻalahi ai ka noi. Hiki iā lākou ke monofunctional, nona hoʻokahi wale nō hui reactive a i ʻole kahi unsaturation, a i ʻole multifunctional. ʻAe kēia unsaturation iā lākou e hana a hoʻokomo ʻia i loko o ka mea i hoʻōla ʻia a i ʻole i hoʻopau ʻia, ma mua o ka volatilizing i ka lewa e like me ka mea maʻamau me nā uhi maʻamau. ʻO nā monomers multifunctional, no ka mea he ʻelua a ʻoi aku paha mau wahi reactive, hana i nā loulou ma waena o nā molekala oligomer a me nā monomers ʻē aʻe i loko o ka formulation.

Nā Photoinitiators: Hoʻopili kēia mea hoʻohui i ka mālamalama a kuleana no ka hana ʻana o nā radical manuahi a i ʻole nā ​​​​hana. ʻO nā radical manuahi a i ʻole nā ​​​​hana he mau ʻano ikehu kiʻekiʻe e hoʻoulu ai i ka crosslinking ma waena o nā wahi unsaturation o nā monomers, oligomers a me nā polymers. ʻAʻole pono nā Photoinitiators no nā ʻōnaehana i hoʻōla ʻia e ka beam electron no ka mea hiki i nā electrons ke hoʻomaka i ka crosslinking.

Nā Mea Hoʻohui: ʻO nā mea maʻamau ka mea hoʻopaʻa, e pale ana i ka gelation i ka mālama ʻana a me ka hoʻōla mua ʻana ma muli o nā pae haʻahaʻa o ka ʻike ʻana i ka mālamalama. ʻO nā pigment kala, nā dyes, nā defoamers, nā mea hoʻolaha adhesion, nā mea hoʻopili, nā mea hoʻomaʻū a me nā mea kōkua paheʻe he mau laʻana o nā mea hoʻohui ʻē aʻe.