UV cobyog qhov tseem ceeb ntawm UV curing system.Nws yog oligomer uas tuaj yeem hloov pauv lub cev thiab tshuaj lom neeg hauv lub sijhawm luv luv tom qab raug UV teeb, thiab nrawm nrawm thiab kho.Tom qab kho cov txheej txheem UV, qhov kev ua tau zoo ntawm cov txheej txheej zaj duab xis feem ntau yog nyob ntawm nws cov khoom siv ua yeeb yaj kiab tseem ceeb - UV resin, thiab kev ua haujlwm ntawmUV cobyog txiav txim los ntawm macromolecular polymer uas tsim cov resin no.Cov qauv molecular, qhov hnyav molecular, ob daim ntawv cog lus ceev thiab iav hloov pauv kub ntawm cov polymer yuav cuam tshuam rau kev ua haujlwm ntawm cov resin.Cov tsoos oily UV resin muaj qhov hnyav molecular thiab viscosity, yog li nws muaj qhov tsis zoo hauv txheej txheej txheej txheem thiab kev tswj cov yeeb yaj kiab.Acrylateactive diluent [1] muaj unsaturated ob daim ntawv cog lus thiab muaj viscosity tsawg.Ntxiv rau UV curing system tuaj yeem txo cov resin viscosity, txhim kho qhov sib txuas ntawm qhov sib txuas ntawm cov resin, thiab txhim kho cov yeeb yaj kiab ua haujlwm ntawm cov resin, yog li nws tau siv dav.Txawm li cas los xij, feem ntau cov diluents nquag muaj tshuaj lom thiab ua rau tib neeg tawv nqaij, mucous membrane thiab ob lub qhov muag.Tsis tas li ntawd, cov diluent yog qhov nyuaj rau kev hnov mob tag nrho thaum lub sij hawm UV irradiation, thiab cov seem monomer yuav cuam tshuam ncaj qha rau kev ua haujlwm ntev ntawm cov yeeb yaj kiab kho, uas txwv tsis pub nws daim ntawv thov hauv cov khoom ntim khoom noj khoom haus huv.
Dej hiav txwvUV cobhais txog covUV cobuas yog soluble nyob rau hauv dej los yog yuav dispersed nrog dej.Nws cov molecules muaj qee yam ntawm hydrophilic pawg xws li carboxyl, hydroxyl, amino, ether lossis amide pawg, nrog rau cov pab pawg tsis txaus xws li acryloyl, methacryloyl lossis allyl pawg.Tam sim no, dej ntwsUV resinsFeem ntau muaj xws li waterborne polyacrylate, waterborne polyester acrylate, waterborne epoxy acrylate thiab waterborne polyurethane acrylate.
Raws li ib yam tshiab ntawm polymer, hyperbranched polymer muaj ib tug kheej kheej qauv, ib tug loj tus naj npawb ntawm active pab pawg neeg, thiab tsis muaj entanglement ntawm molecular chains.Hyperbranched polymers muaj qhov zoo ntawm kev tawg yooj yim, qis melting point, tsawg viscosity thiab siab reactivity.Yog li ntawd, acryloyl pawg thiab hydrophilic pawg tuaj yeem nkag mus rau kev sib txuas cov dej hauv UV kho oligomers, uas qhib txoj hauv kev tshiab rau kev npaj cov dej.UV resins.
Post lub sij hawm: Oct-11-2022