ʻO ka uhi ʻana o Ultraviolet curing (UV) kahi ʻano hou o ka uhi pale kaiapuni.He wikiwiki loa kona maloʻo.Hiki ke ho'ōla ʻia e ke kukui UV i kekahi mau kekona, a ʻoi aku ka maikaʻi o ka hana.
ʻO nā uhi uhi hiki ke mālama ʻia o UV ka mea nui o nā oligomers, nā diluent ikaika, photoinitiators a me nā mea hoʻohui.
1. oligomer
ʻO ka mea hana kiʻiʻoniʻoni ka mea nui o ka uhi ʻana, a ʻo ia ka ʻāpana wai o ka uhi.ʻO ka hana kiʻiʻoniʻoni, ka hana a me nā mea kūikawā ʻē aʻe o ka uhi ʻana e hilinaʻi nui ʻia i ka mea hana kiʻiʻoniʻoni.ʻO ka mea hana kiʻiʻoniʻoni o ka uhi UV he oligomer.Hoʻoholo maoli kāna hana i ka hana noi, ka wikiwiki o ka mālama ʻana, ka hana kiʻiʻoniʻoni a me nā mea kūikawā ʻē aʻe o ka uhi ma mua o ka hoʻōla ʻana.
ʻO ka uhi ʻana o UV ka nui o nā ʻōnaehana hoʻōla kukui radical manuahi, no laila ʻo nā oligomers i hoʻohana ʻia he mau resins acrylic.ʻO ka cationic UV coating oligomers he epoxy resin a me ka vinyl ether compound.
2. hoʻoheheʻe ikaika
ʻO ka diluent ikaika kekahi mea nui o ka uhi UV.Hiki iā ia ke hoʻoheheʻe a hoʻemi i ka viscosity, a hiki ke hoʻoponopono i ka hana o ke kiʻi hoʻōla.Acrylate functional monomers i kiʻekiʻe reactivity a me ka haʻahaʻa volatility, no laila, ua hoʻohana nui ia i ka UV coatings.Hoʻohana mau ʻia nā esters Acrylic e like me nā mea hoʻoheheʻe ikaika no nā uhi UV.I ka hana maoli, e hoʻohana pū ʻia nā acrylates mono -, Bi -, a me nā multi-functional e hoʻohui i kā lākou mau waiwai a loaʻa i kahi hopena maikaʻi.
3. mea hoʻomaka kiʻi
ʻO Photoinitiator kahi mea hoʻoikaika kūikawā i nā uhi UV.He mea koʻikoʻi ia o ka uhi ʻana o UV a hoʻoholo i ka nui o ka mālama ʻana o UV o nā uhi UV.
No nā pale UV varnish kala ʻole, hoʻohana pinepine ʻia ka 1173, 184, 651 a me bp/tertiary amine ma ke ʻano he photoinitiators.184 me ka hana kiʻekiʻe, ʻala haʻahaʻa a me ke kūpaʻa melemele, ʻo ia ka photoinitiator i makemake ʻia no ka melemele ʻana i nā uhi pale UV.I mea e hoʻomaikaʻi ai i ka māmā curing rate, hoʻohana pinepine ʻia me ka TPO.
No nā pale UV non-ferrous, pono nā photoinitiators itx, 907, 369, TPO, 819, etc. I kekahi manawa, i mea e hōʻemi ai i ka polymerization inhibition oxygen a hoʻomaikaʻi i ka hoʻōla ʻana o UV, hoʻohui pinepine ʻia kahi amine ikaika i UV. nā uhi.
4. mea hoʻohui
ʻO nā mea hoʻohui nā mea kōkua o nā uhi UV.ʻO ka hana o nā mea hoʻohui e hoʻomaikaʻi i ka hana hana, ka mālama ʻana a me ka hana noi o ka uhi, hoʻomaikaʻi i ka hana kiʻiʻoniʻoni a hāʻawi i ke kiʻiʻoniʻoni me kekahi mau hana kūikawā.ʻO nā mea hoʻohui maʻamau no nā uhi UV ʻo ia ka defoamer, leveling agent, wetting dispersant, adhesion promoter, matting agent, polymerization inhibitor, etc., e pāʻani ana i nā kuleana like ʻole i nā uhi UV.
Ka manawa hoʻouna: ʻAukake-02-2022