UV curing systems feem ntau muab faib ua ob pawg: hom dawb radical thiab hom cationic, nrog qhov sib txawv tseem ceeb hauv kev siv ntawm TAIC:
1. Radical UV curing systems: Ua tau thiab muaj qhov tshwj xeeb zoo
Dawb radical UV system yog thawj daim ntawv thov scenario rau TAIC. Nws compatibility tshwm sim los ntawm cov nram qab no yam:
Reactivity matching: Txawm hais tias ob daim ntawv cog lus reactivity ntawm allyl pawg yog qis dua li ntawm acrylates, kev sib txuas zoo tuaj yeem ua tiav los ntawm kev tsim kho kom zoo. Feem ntau ua ke nrog cov reactive prepolymers (xws li polyurethane acrylates los yog epoxy acrylates) los yog monomers (xws li TMPTA): cov acrylate pawg polymerize sai heev los tsim linear chains ua ntej, tom qab los ntawm ob daim ntawv cog lus ntawm TAIC koom nyob rau hauv crosslinking los tsim ib tug peb{{1.}dimensional network.
- Kev sib raug zoo heev: TAIC nthuav tawm qhov tsis zoo nrog feem ntau ntawm UV prepolymers (xws li epoxy acrylates, polyester acrylates, thiab lwm yam) thiab diluent monomers, uas qhia tias tsis muaj theem sib cais lossis nag lossis daus, uas yooj yim rau kev tsim qauv.
- Cov txiaj ntsig kev ua tau zoo yog qhov tseem ceeb:
- Kev txhim kho cua sov: Kev taw qhia ntawm lub nplhaib isocyanurate nce lub thermal decomposition kub (T5%) ntawm cov khoom sib txuas los ntawm 15-30 degree, ua kom siv tau ntev ntawm qhov kub txog li 180-250 degree;
- Mechanical Property Optimization: Qhov nce ntawm crosslinking ceev nce cov cwj mem hardness ntawm cov khoom los ntawm 2H mus rau saum toj 4H thiab txo Taber puas los ntawm 20%-40%;
- Txhim kho tshuaj tiv thaiv: Peb - cov qauv sib txuas sib txuas tau zoo tiv thaiv cov kuab tshuaj nkag mus, nce ethanol / acetone wiped resistance los ntawm 3-5 zaug.
Daim ntawv thov Case: Nyob rau hauv UV-kho siab- kub- tiv taus hlau txheej, thaum TAIC cov ntsiab lus yog 10%-15%, cov txheej tuaj yeem tiv taus qhov ci tsis tu ncua ntawm 200℃yam tsis muaj xim lossis tawg. Nyob rau hauv UV-kho hnav-tiv taus inks, TAIC txhim kho tus number case qhov khawb tsis kam, ua tau raws li cov kev cai nruj ntawm cov ntim khoom noj.
2. Cationic UV curing system: Txwv tsis pub siv
Cationic UV tshuab cia siab rau cov kua qaub protonic los pib lub polymerization ntawm epoxy thiab vinyl ether pawg. Txawm li cas los xij, nucleophilicity ntawm TAIC's allyl ob daim ntawv cog lus yog qhov tsis muaj zog, ua rau nws nyuaj rau kev ua haujlwm zoo nrog cationic active hom. Txawm tias muaj zog cationic initiator ntau npaum li cas, nws tus nqi polymerization tseem qis dua li ntawm epoxy monomers, uas ua rau muaj kev txwv tsis pub siv TAIC hauv cationic UV systems.