UV curable coatings muaj qhov zoo ntawm kev kho ceev ceev, ib puag ncig tus phooj ywg, txuag hluav taws xob, tus nqi qis, thiab lwm yam ", thiab tau dav siv hauv ntawv, roj hmab, yas thiab lwm yam txheej txheej.Feem ntau hais lus, cov photosensitive kua resin tuaj yeem ncaj qha hloov mus rau hauv cov khoom kho tau los ntawm kev muab tso rau hauv qab UV teeb ntawm huab cua kub Feem ntau, nws tsis muaj cov organic sib txuas rau ib hnub.Nrog rau kev saib xyuas rau cov teeb meem ib puag ncig, kev tshawb fawb, kev tsim kho thiab kev siv cov txheej txheem "ntsuab ntsuab" ntawm ib puag ncig no tau dhau los ua qhov tob thiab nrov.Hydrophilic txheej yog ib hom kev ua haujlwm txheej tsim tau sai heev nyob rau hauv xyoo tas los no Nws yog tsuas yog siv nyob rau hauv txhuas thiab txhuas alloy khoom, xws li txhuas fins ntawm cua txias cua sov exchanger.Cov txheej txheem hydrophilic feem ntau yog ua los ntawm kev ci hydrophilic resin ntawm 200C rau kaum vib nas this, tom qab ntawd kho thiab sib txuas los ua ib zaj duab xis.Txawm hais tias txoj kev npaj muaj cov cuab yeej paub tab thiab zoo hydrophilicity, nws siv lub zog loj, volatilizes ntau cov kuab tshuaj organic thiab muaj kev tsim kho tsis zoo.Kev npaj ntawm cov ntshiab organic hydrophilic txheej los ntawm UV curing thiab cross-linking tsis tau tsuas yog coj kom zoo dua ntawm qhov zoo ntawm UV curing, tab sis kuj ua tau raws li qhov yuav tsum tau ntawm hydrophilicity.Nyob rau hauv daim ntawv no, ib tug tshiab synthesis tswv yim tau txais yuav.Raws li qhov hnyav molecular acrylate copolymer, photosensitive monomer tau qhia, thiab tom qab ntawd photocurable cross-linked zaj duab xis tau tsim los npaj cov txheej txheem hydrophilic.Cov teebmeem ntawm kev qhia txog GMA, monomer piv, nquag diluent hom thiab cov ntsiab lus ntawm hydrophilicity thiab dej tsis kam ntawm cov txheej txheej tau tshawb xyuas.
UV curable cov ntaub ntawv feem ntau yog hydrophobic, uas yog ze ze rau qhov muaj pes tsawg leeg ntawm lawv cov formulations.Photoinitiators yuav tsum tau siv nyob rau hauv UV curing mis.Qee zaum, txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau, nws yuav tsum tau ntxiv cov tshuaj tua kab mob.Cov photoinitiators thiab additives feem ntau yog hydrophobic, thiab cov khoom decomposition ntawm photoinitiators yuav tsiv mus nyob rau saum npoo ntawm cov khoom kho, yog li ntxiv dag zog rau cov hydrophobicity ntawm UV curing cov ntaub ntawv.Cov resin thiab monomer nyob rau hauv UV curing mis kuj tseem yog hydrophobic nyob rau hauv cov xwm, thiab lub kaum sab xis yog feem ntau ntawm 50 thiab 90 degrees.
Styrene sulfonate, polyethylene glycol acrylate, acrylic acid thiab lwm yam ntaub ntawv yog hydrophilic lawv tus kheej, tab sis thaum siv nyob rau hauv UV curing cov ntaub ntawv, lub hydrophilicity ntawm kho cov ntaub ntawv yuav tsis loj hlob, thiab lub sib cuag lub kaum sab xis feem ntau yuav nyob twj ywm ntau dua 50 degrees.
Hydrophilicity txhais tau hais tias cov molecules los yog molecular aggregates yog ib qho yooj yim nqus dej los yog yuav yaj los ntawm dej.Qhov saum npoo ntawm cov khoom siv tsim los ntawm cov molecules yog yooj yim wetted los ntawm dej.Daim ntawv thov ntawm ntau txheej yuav tsum tau cov khoom nto kom muaj dej txaus txaus, xws li zaj duab xis, offset printing, tshwj xeeb adhesives, biocompatible ntaub ntawv, thiab lwm yam. Nyob rau hauv cov ntaub ntawv siv, lub hydrophilicity feem ntau yog ntsuas los ntawm kev sib cuag lub kaum sab xis ntawm cov dej ntawm cov khoom nto. nrog lub kaum sab xis 'meter'.Cov ntaub ntawv nrog lub kaum sab xis qis dua 30 degrees feem ntau suav tias yog hydrophilic.
Post lub sij hawm: Nov-29-2022