Kev pab cuam crosslinking raws li kev nthuav tawm tam sim no suav nrog urethane poly (meth) acrylate nrog TAIC.
Cov tshuaj urethane poly (meth) acrylate tuaj yeem tsim tawm, piv txwv li, los ntawm cov organic isocyanate thiab hydroxyl pawg uas muaj (meth) acrylate. Qhov urethane poly (meth) acrylate muaj qhov hnyav cov roj molecular yog dua. Tus naj npawb-nruab nrab molecular phaus ntawm urethane poly (meth) acrylate tsis tsawg tshaj 1000, thiab nyiam dua tsis tsawg tshaj 1200. Cov kev txwv sab saud ntawm cov naj npawb-nruab nrab molecular hnyav ntawm urethane poly (meth) acrylate feem ntau yog 10,000.
Cov isocyanate organic yog ib qhov sib txuas uas muaj ob lossis ntau dua isocyanate pawg nyob rau hauv ib lub molecule los ntawm. Piv txwv ntawm cov pab pawg organic suav nrog linear, branched lossis cyclic aliphatic hydrocarbon pawg, muaj ntxhiab hydrocarbon pawg, pawg ua haujlwm heterocyclic nplhaib xws li pawg isocyanurate. Cov piv txwv tshwj xeeb ntawm cov organic isocyanate muaj xws li 1,6-hexamethylene diisocyanate, isophorone diisocyanate, toluidine diisocyanate, MDI (diphenylmethane diisocyanate), hydrogenated MDI, xylylene diisocyanate, lub cev sib ntawm 1,6-hexamethylene diisocyanate, a. nyiam.
Cov hydroxyl pawg uas muaj (meth) acrylate yog acrylate (meth) acrylate muaj ib lossis ntau pawg hydroxyl hauv ib lub molecule. Piv txwv ntawm hydroxyl pawg-muaj (meth) acrylate suav nrog (meth) acrylates ntawm cov cawv cawv polyhydric. Cov piv txwv tshwj xeeb ntawm cov khoom siv hydroxyl pawg (meth) acrylate suav nrog trimethylolpropane di (meth) acrylate, pentaerythritol trimethacrylate, dipentaerythritol tetra (meth) acrylate, tripentaerythritol (meth) acrylate, polyalkyl diol (meth), methryry, polyalkyl diol (meth), methry polyalkylene glycol (meth) acrylates, glycerin di (meth) acrylate thiab polyol (meth) acrylates. Cov hydroxyl pawg uas muaj (meth) acrylates tuaj yeem yog ua ib hom acrylate lossis cov sib xyaw ntawm cov acrylates.
Qhov sib xyaw ua ke (qhov hnyav piv) ntawm urethane poly (meth) acrylate thiab TAIC feem ntau yog 1: 9 txog 9: 1 thiab nyiam dua 1: 1 txog 1: 4.