Tiv thaiv cov hmoov txheej txiv kab ntxwv tev
Kev Tiv Thaiv hmoov txheej txiv kab ntxwv peel
Cov tsos ntawm cov txheej yog dhau los ua qhov tseem ceeb hauv kev tsim khoom siv tshiab (OEM) Painting. Yog li ntawd, ib qho ntawm lub hom phiaj tseem ceeb ntawm kev lag luam coatings yog ua kom tiav cov kev cai ntawm cov neeg siv cov xim kom ua tiav qhov kev ua tau zoo tshaj plaws, uas kuj suav nrog lub ntsej muag zoo nkauj. Muaj feem cuam tshuam rau qhov pom ntawm qhov chaw ntawm qhov chaw los ntawm cov xwm txheej xws li xim, gloss, haze, thiab deg qauv. Cov gloss thiab cov duab clarity feem ntau yog siv los tswj cov tsos ntawm txheej. Txawm li cas los xij, kev siv cov txheej txheem siab gloss, qhov degree ntawm qhov hloov pauv ntawm qhov chaw kuj cuam tshuam rau cov tsos ntawm cov txheej txheem tag nrho, thiab qhov kev ntsuas gloss kuj tseem tsis tuaj yeem tswj tau qhov hloov pauv ntawm qhov pom ntawm tib lub sijhawm, cov nyhuv no tseem hu ua "txiv kab ntxwv tev"
Txiv kab ntxwv tev lossis micro-hloov pauv loj ntawm 0.1mm ~ 10mm ntawm cov qauv corrugated. Wavy, lub teeb thiab tsaus cheeb tsam nyob rau hauv lub siab gloss nto ntawm txheej, nws tuaj yeem pom. Muaj peev xwm paub qhov txawv ntawm ob theem sib txawv ntawm volatility: ntev fluctuations, tseem hu ua txiv kab ntxwv tev, uas yog pom nyob rau hauv qhov sib txawv ntawm qhov sib txawv ntawm 2 mus rau 3; Lwm qhov hu ua luv luv fluctuations lossis micro-fluctuations, uas yog ib ntus ntawm kwv yees li 50cm ntawm kev soj ntsuam kev hloov pauv.
Cov yam ntxwv ntawm kev cuam tshuam qhov ntws thiab qhov pom thaum lub sij hawm hmoov txheej
Nyob rau hauv industrial coatings, hmoov txheej nyob rau hauv cov kev hloov nyob rau hauv cov theem ntawm kev npaj thiab deposition txheej txheem yog tshwj xeeb. Kev ntub dej thiab txhim kho cov txheej txheej ntws, ua rau cov hmoov txheej yog qhov nyuaj rau tshem tawm ntau dua li cov kua txheej txheej vim tsis muaj kuab lom. Txawm hais tias ob qho tib si tseem ceeb zoo sib xws, tab sis piv rau cov kua txheej, thermosetting hmoov txheej yog ua raws li cov txheej txheem sib txawv heev.
Cov hmoov txheej yog ib qho hnyav-dawb homogeneous system. Nyob rau hauv cov txheej txheem kev npaj, ib tug pigment thiab lwm yam khoom yog dispersed los ntawm melt-sib tov thiab ib nrab encased nyob rau hauv ib tug tsawg molecular hnyav khoom resin. Kev siv cov hmoov coatings yog cov hmoov los ntawm huab cua hloov mus rau hauv cov khoom siv kawg (hmoov tshem tawm hauv huab cua), thiab tom qab ntawd los ntawm tus nqi kom ua raws li cov txheej txheem substrate. Ua kom sov ntawm qhov ntsuas kub, kom cov hmoov nplej yaj ua ke (coalescence), ntws (filming), thiab tom qab ntawd leveling, thaum lub sij hawm ntawd, los ntawm cov kua dej khov theem ntub dej), qhov kawg chemical cross-linking forming siab molecular hnyav. ntawm txheej zaj duab xis, uas yog cov deposition ntawm cov hmoov txheej txheej txheem.
Tiv thaiv cov hmoov txheej txiv kab ntxwv tev