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He aha nā photoinitiators a pehea ka nui o kāu ʻike e pili ana i nā photoinitiators? ʻO nā Photoinitiators kahi ʻano o ka pūhui e hiki ke hoʻomoʻi i ka ikehu ma kekahi lōʻihi nalu i ka ʻāpana ultraviolet (250-420nm) a i ʻole ʻike ʻia (400-800nm), e hoʻohua i nā radical manuahi, nā cations, a pēlā aku, a pēlā e hoʻomaka ai ka monomer polymerization, crosslinking, a me ka ho'ōla . Eia nō naʻe, ʻokoʻa nā lōʻihi nalu i lawe ʻia e nā photoinitiators like ʻole.

Hiki ke hoʻokaʻawale ʻia ka hoʻokaʻawale ʻana o nā photoinitiators i ʻelua mau ʻāpana: nā radical manuahi a me nā ʻano ionic. Hiki ke hoʻokaʻawale ʻia nā radical manuahi i ke ʻano I a me ke ʻano II; Hiki ke hoʻokaʻawale ʻia nā ʻano Ionic i nā ʻano cationic a me nā anionic. ʻO ka photoinitiator ka wahi hoʻomaka o ka hoʻokumu ʻana, a ʻo kona hoʻohana hope ʻia e hoʻopili ʻia e nā koi hana a me ka ʻōnaehana hoʻonohonoho. Aia wale nō ka photoinitiator kūpono loa, ʻaʻohe photoinitiator maikaʻi loa.

Aia nā Photoinitiators i uka o ke kaulahao ʻoihana. ʻO nā mea maka i loko o ke kaulahao ʻoihana hoʻomaʻamaʻa UV ka mea maʻamau a me nā kemika kūikawā, me nā photoinitiators aia i luna o ke kaulahao ʻoihana. Hiki ke hoʻohana ʻia ka moʻo o nā pūhui thiol e like me nā mea maka no nā photoinitiators, a hoʻohana nui ʻia i nā ʻano lāʻau lapaʻau a me ka hana pesticide; Hoʻohana ʻia nā Photoinitiators ma nā ʻano like ʻole e like me nā photoresists a me nā mea kemika kākoʻo, nā uhi UV, nā inika UV, a me nā mea ʻē aʻe, me nā noi terminal e pili ana i nā huahana uila, nā mea hoʻonaninani hale a me nā mea kūkulu hale, nā lāʻau lapaʻau a me nā lāʻau lapaʻau, etc.

Aia nā ʻano like ʻole o nā photoinitiators me ka nui o ka hoʻohana ʻana, no laila pehea mākou e koho ai iā lākou? A laila, e haʻi wau iā ʻoe pehea e koho ai i nā huahana i ʻike pinepine ʻia.

ʻO ka mea mua, makemake wau e hoʻolaunamea hoʻomaka kiʻi 819, hiki ke hoʻohana ʻia no ka uhi ʻia ʻana o nā kala ʻulaʻula UV. ʻO nā uhi UV, ma muli o kā lākou hana maikaʻi loa a me ka hana maikaʻi ʻana, ua hoʻohana nui ʻia i nā pūpū plastik o nā huahana uila a me nā mea pono hale. Eia naʻe, ʻaʻole maikaʻi ka paʻa paʻa ʻana o ka uhi ʻana o UV ma hope o ke kala ʻana, e hopena i ka hoʻopili ʻana i nā kiʻiʻoniʻoni maikaʻi ʻole a me ka hoʻopuehu maikaʻi ʻana a me ka hoʻonohonoho ʻana o nā puaʻa e nā resins UV, e pili nui ana i ke ʻano o nā uhi, no laila, ʻo ke kaʻina hana kuʻuna e hoʻopili mua i ka solvent. kumu kala no ka kala ʻana, a laila e hoʻopili i ka varnish UV ma hope o ka kuke ʻana e hoʻomaikaʻi i nā ʻano kino like ʻole o ka ʻili kiʻi pena.

Mea hoʻomaka kiʻi 184He kiʻi paʻi kiʻi paʻa paʻa ʻano ʻano radical manuahi (I) maikaʻi a melemele me ka maikaʻi o ka manawa mālama lōʻihi, kiʻekiʻe ka hoʻomaka ʻana, a me ka laulā UV absorption. Hoʻohana nui ʻia ia no ka hoʻōla ʻana o UV i nā prepolymers unsaturated (e like me nā esters acrylic) me nā monomers vinyl a me nā oligomers hoʻokahi a i ʻole, a he kūpono loa ia no nā uhi a me nā inika e koi ana i ka pae melemele kiʻekiʻe.

Photoinitiator TPO-Lhe ʻano wai photoinitiator, i hoʻohana ʻia i ka ʻōnaehana hoʻokumu me ka haʻahaʻa melemele a me ka ʻala haʻahaʻa. Hoʻohana maʻamau ia i ka inika paʻi kiʻi silika, ka inika paʻi paʻi Planographic, ka inika paʻi flexographic, photoresist, varnish, paʻi paʻi a me nā māla ʻē aʻe.

ʻO kamea hoʻomaka kiʻi TPOHoʻohana nui ʻia i nā ʻōnaehana keʻokeʻo, a hiki ke hoʻohana ʻia i nā uhi hoʻōla UV, paʻi inika, UV curing adhesives, Optical fiber coatings, photoresists, photopolymerization plates, stereolithographic resins, composites, tooth fillers, etc.

ʻO Photoinitiator 2959 he photoinitiator maikaʻi ʻole melemele me ka hana kiʻekiʻe, haʻahaʻa haʻahaʻa, ʻaʻole melemele, haʻahaʻa volatility, insensitivity i ka polymerization oxygen, a me ka maikaʻi o ka mālama ʻana i ka ʻili. ʻO nā pūʻulu hydroxyl kūʻokoʻa i hiki ke hoʻoheheʻe ʻia i loko o nā uhi wai. ʻOi aku ka maikaʻi no nā esters acrylic e pili ana i ka wai a me nā polyesters unsaturated. ʻO Photoinitiator 2959 kekahi mea hoʻopili i ʻae ʻia e ka ʻōnaehana hōʻoia FDA no ka launa ʻole me ka meaʻai.

BenzophenoneʻO ia ka mea i hoʻohana nui ʻia i nā ʻōnaehana hoʻōla UV radical manuahi e like me nā uhi, inika, adhesives, a me nā mea ʻē aʻe. ʻO kēia huahana he mea hoʻopololei styrene polymerization a me ka fixative ʻala, hiki ke hāʻawi i ka ʻala i kahi ʻono ʻono, a hoʻohana nui ʻia i ka ʻala a me ke kopa.

ʻO nā huahana e like me nā photoinitiators he ultraviolet absorbers. I kekahi manawa, ʻaʻole hiki i nā kānaka ke hoʻokaʻawale i waena o nā mea ʻelua.Nā mea hoʻopau UVhiki ke pani i nā photoinitiators. No ka mea, ʻo ka UV absorbers ka mea i hoʻohana nui ʻia o ka stabilizer māmā a hiki ke hoʻopili a hoʻololi paha i nā photoinitiators no ka hoʻohana ʻana, a ʻoi aku ka maikaʻi o kā lākou hana. Hoʻohana pono ʻia nā Photoinitiators no ka paʻi kiʻi ʻana, no ka inika, ka uhi, a hiki ke hoʻohana ʻia i nā ʻoihana ʻenehana a me nā ʻenehana uila. Loaʻa i ka UV absorbers ka nui o ka hoʻohana ʻana, hoʻohana nui ʻia i nā mea hoʻonaninani me nā koi kiʻekiʻe. I kēia manawa, ʻoi aku ka kiʻekiʻe o ke kumukūʻai o ka ultraviolet absorbers, ʻoiai he haʻahaʻa haʻahaʻa nā photoinitiators. Hiki iā ʻoe ke koho i nā huahana e pili ana i kāu pono ponoʻī.

He mea hana hoʻomaka ʻoihana mākou. Ma kahi o nā huahana i ʻōlelo ʻia ma luna nei, loaʻa iā mākou nā huahana like ʻole: