Lub curing mechanism ntawmpleev ximyog lub hauv paus tseem ceeb uas txiav txim siab qhov kev ua tau zoo kawg ntawm cov xim zaj duab xis. Cov txheej txheem sib txawv ncaj qha cuam tshuam rau cov khoom tseem ceeb xws li adhesion, hardness, thiab huab cua tsis kam ntawm cov xim zaj duab xis los ntawm kev tswj tus ntoo khaub lig-txuas kev sib txuas thiab cov qauv ntawm zaj duab xis- tsim cov tshuaj.
Cov txheej txheem kho kom zoo tau muab faib ua ob pawg: kev kho lub cev thiab tshuaj tua kab mob. Kev kho lub cev cia siab rau cov kuab tshuaj evaporation lossis emulsion particle coalescence los ua cov yeeb yaj kiab, raws li pom hauv cov xim acrylic latex thiab xim nitrocellulose. Txoj kev kho no tsis muaj tshuaj lom neeg hla- txuas, ua rau cov xim thermoplastic xim. Lawv muab cov txiaj ntsig zoo xws li daim ntawv thov yooj yim thiab ziab sai, tab sis muaj cov kuab tshuaj tsis zoo thiab kub tsis kam, thiab zoo li muag muag ntawm qhov kub thiab txias. Tshuaj tua kab mob, ntawm qhov tod tes, tsim ib qho peb- cov qauv sib txuas los ntawm kev siv tshuaj lom neeg ntawm cov yeeb yaj kiab- ua cov molecules, suav nrog oxidative polymerization (alkyd xim) thiab ob - cov khoom ntoo khaub lig- txuas (polyurethane xim, epoxy xim). Cov xim zoo li no yog thermosetting; qhov siab dua tus ntoo khaub lig{10}}txuas kev sib txuas ceev, qhov muaj zog dua qhov hardness, adhesion, thiab tshuaj tiv thaiv, ua rau lawv tsim nyog rau kev xav tau xws li kev lag luam los tiv thaiv- corrosion thiab automotive txheej.
Curing mechanisms tseem cuam tshuam rau daim ntawv thov kev sib raug zoo thiab kev ruaj ntseg ntawm zaj duab xis. Piv txwv li, ob- cov xim epoxy cov khoom yuav tsum muaj kev tswj xyuas nruj ntawm kev kho tus neeg sawv cev thiab qhov kub thiab txias. Qhov sib piv tsis sib xws lossis qhov kub qis tuaj yeem ua rau tsis tiav, ua rau cov xim pleev xim rau chalk thiab tev tau yooj yim. UV-cov xim kho tau ua tiav nrawm nrawm- txuas ntawm photoinitiators, khav theeb kev ua kom zoo thiab khawb tau zoo heev, tab sis lawv xav tau cov substrates nrog lub teeb pom kev zoo.
Tsis tas li ntawd, qhov me me ntawm cov tshuaj tiv thaiv curing txiav txim siab cov tsos ntawm zaj duab xis. Kev sib tsoo hnyav-txuas txuas yuav ua rau muaj kev ntxhov siab sab hauv, ua rau cov yeeb yaj kiab tawg thiab daj, thaum cov txheej txheem kho me me ua kom cov yeeb yaj kiab smoothness thiab glossiness.
