Tom qab lub sijhawm siv, qee cov ntiv tes tseem pom muaj kev zoo, thiab qee cov ntiv tau ceev tshaj qub. Nws yog obviously tib yob ntawm kab xev. Vim li cas cov laus laus txawv? Qhov no feem ntau tshwm sim los ntawm qhov chaw sab nraud.
Raws li ib txwm muaj, ib qho ntawm txoj hauv kev ua rau laus zeeg yog oxygen. Qhov kev ua ntawm cov pa oxygen hauv cov huab cua yog tus loj. Thaum muaj oxygen ntau heev, ceev oxidation ntawm daim kab xev yuav muaj tshwm sim. Ua raws li ultraviolet lub teeb, lub hnub ci yog ntsuas kub, ua tau sai sai rau cov khoom siv adhesion, ntxiv rau peb qhov tshwj xeeb ntawm cov kab xev kub, lwm daim kab xev muaj tshav ntuj ntev ntev yuav maj mam poob nws cov viscosity, ua rau cov laus ntawm cov kab xev. Tom qab ntawd cov nyhuv ntawm noo noo, thaum lub degree ntawm noo noo nyob rau hauv cov huab cua yuav tseem cuam tshuam rau lub neej ntawm kab xev, ntau hydro-hluav taws daim ntawv muaj ib tug zoo heev waterproof kev ua tau zoo.
Kws tshuaj tua kab mob kuj yog ib qho ntawm cov txheej xwm uas cuam tshuam rau kev laus ntawm cov ntaub kab xev cov khoom coj ncaj. Nws lub ntsiab tivthaiv yog calcium oxide uas muaj cov ntsiab lus calcium thiab tshuaj lom neeg nrog cov organic compounds; qhov tseem ceeb tshaj plaws yog qhov yas rau yas, nws lub ntsiab tseem ceeb yog los muag cov yas, Raws li lub sij hawm mus, cov khoom siv nws yuav muaj ntau dua thiab ntau cov khoom yas, uas yuav ua rau kev laus ntawm daim kab xev.
