xov xwm

Niaj hnub no, tib neeg tau mloog zoo rau cov pa roj carbon tsawg thiab kev tiv thaiv ib puag ncig, yog li thaum kho kom zoo nkauj, cov neeg feem coob yuav xaiv qee qhov kev tiv thaiv ib puag ncig.Niaj hnub no peb tsuas yog tham txog ib puag ncig tus phooj ywg waterproof txheej.Waterproof coatings feem ntau muab faib ua ob hom txheej: dej-soluble coatings (dej-raws li txheej) thiab hnyav-raws li txheej.Yog li dab tsi yog qhov txawv ntawm ob lub tsho tiv thaiv dej?

Qhov sib txawv ntawm cov dej-raws li cov txheej txheem thiab cov txheej txheem hnyav tuaj yeem hais los ntawm cov kev xav hauv qab no:

A. Qhov sib txawv ntawm cov txheej txheem txheej txheej

1. Cov resin txawv.Cov resin ntawm cov xim pleev xim rau hauv dej yog dej-soluble thiab tuaj yeem tawg tau (dissolved) hauv dej;

2. Lub diluent (cov kuab tshuaj) txawv.Cov xim pleev xim dej tuaj yeem diluted nrog DIWater (deionized dej) nyob rau hauv ib qho kev faib ua feem, thaum cov xim hnyav hnyav tsuas yog diluted nrog cov kuab tshuaj organic (odorless kerosene, roj dawb, thiab lwm yam).

B. Cov txheej txheem kev tsim kho sib txawv

1. Rau kev tsim kho ib puag ncig, qhov dej khov ntawm cov dej khov yog 0 ° C, yog li cov txheej txheem dej tsis tuaj yeem siv qis dua 5 ° C, thaum cov txheej txheem hnyav tuaj yeem siv rau saum -5 ° C, tab sis qhov ziab nrawm yuav qeeb. nqes thiab lub caij nyoog ntawm lem yuav elongated;

2. Rau kev tsim kho viscosity, qhov viscosity txo cov nyhuv ntawm cov dej tsis zoo, thiab cov xim pleev xim dej yuav muaj teeb meem thaum nws tau diluted thiab txo qis hauv viscosity (qhov viscosity txo yuav txo tau cov ntsiab lus ntawm cov xim ua haujlwm, cuam ​​tshuam lub hwj chim npog ntawm cov xim, thiab nce tus naj npawb ntawm kev tsim kho, qhov kev hloov kho viscosity yog yooj yim dua, thiab cov viscosity txwv yuav cuam tshuam rau kev xaiv ntawm kev tsim kho;

3. Rau kev ziab thiab kho, cov xim pleev xim rau hauv dej yog qhov muag heev, cov av noo yog qhov kub thiab txias, nws tsis tuaj yeem kho tau zoo, thiab lub sij hawm ziab kom qhuav yog qhov ntev, tab sis yog tias qhov kub thiab txias, cov dej-raws li dej. xim kuj yuav tsum tau rhuab nyob rau hauv ib tug gradient, thiab nws yuav nkag mus rau high-temperature ib puag ncig instantly.Tom qab cov xim pleev xim rau hauv dej dries Cov dej ntws tawm hauv cov dej vapor tuaj yeem ua rau cov pinholes lossis txawm tias muaj cov npuas loj, vim tias tsuas yog cov dej siv los ua cov tshuaj diluent hauv cov xim dej, thiab tsis muaj volatilization gradient.Rau cov kuab tshuaj raws li cov txheej txheem, cov diluent yog tsim los ntawm cov kuab tshuaj organic nrog cov ntsiab lus sib txawv, thiab muaj ntau yam volatilization gradients.Cov xwm txheej zoo sib xws yuav tsis tshwm sim tom qab flashing (lub sijhawm ziab tom qab kev tsim kho tiav rau lub sijhawm ziab ua ntej nkag mus rau hauv qhov cub).

C. Qhov sib txawv ntawm txheej kho kom zoo nkauj tom qab tsim cov yeeb yaj kiab

C-1.Txawv gloss qhia

1. Solvent-based coatings can control the fineness of pigments and fillers raws li kev sib tsoo, thiab tsis yooj yim rau thicken thaum lub sij hawm cia.Los ntawm kev ntxiv cov resins los tswj cov txheej PVC (pigment-to-base ratio), additives (xws li matting agents) kom ua tiav cov kev hloov ntawm gloss ntawm txheej zaj duab xis, Lub gloss tuaj yeem yog matte, matte, semi-matte, thiab high- gloss.Lub gloss ntawm cov xim tsheb tuaj yeem siab li 90% lossis ntau dua;

2. Kev qhia gloss ntawm cov xim pleev xim dej tsis yog dav li cov xim pleev xim roj, thiab cov lus qhia siab gloss tsis zoo.Qhov no yog vim cov dej hauv cov xim pleev xim dej yog siv los ua cov diluent.Cov yam ntxwv volatilization ntawm dej ua rau nws nyuaj rau cov xim pleev xim rau dej

qhia ntau tshaj 85% siab gloss..

C-2.Cov xim sib txawv

1. Cov kuab tshuaj raws li cov txheej txheem muaj ntau yam pigments thiab fillers, xws li inorganic lossis organic, yog li ntau yam xim tuaj yeem hloov kho, thiab cov xim qhia tau zoo heev;

2. Kev xaiv ntau yam ntawm cov xim thiab cov tshuaj pleev xim rau cov xim dej yog me me, thiab cov xim organic feem ntau siv tsis tau.Vim yog cov xim tsis tiav, nws yog qhov nyuaj los kho cov xim nplua nuj xws li cov xim hnyav hnyav.

D. Cia thiab thauj

Cov xim pleev xim rau hauv dej tsis muaj cov kuab tshuaj organic uas muaj ntxhiab tsw, thiab muaj kev nyab xeeb rau khaws thiab thauj.Thaum muaj kuab paug, lawv tuaj yeem ntxuav thiab diluted nrog dej ntau.Txawm li cas los xij, cov xim pleev xim rau dej muaj qhov kub thiab txias rau kev khaws cia thiab kev thauj mus los.Mis thiab lwm yam mob.

E. Muaj nuj nqi Transcendence

Cov kuab tshuaj raws li cov txheej txheem feem ntau yog cov khoom siv organic, thiab cov khoom organic yuav muaj ntau yam teeb meem xws li saw scission thiab carbonization nyob rau hauv qhov kub thiab txias.Tam sim no, qhov siab tshaj plaws kub tsis kam ntawm cov khoom organic tsis tshaj 400 ° C.

Tshwj xeeb kub-resistant coatings siv tshwj xeeb inorganic resins nyob rau hauv dej-raws li txheej yuav tiv taus kub ntawm ntau txhiab degrees.Piv txwv li, ZS series high-temperature-resistant water-based coatings not only take into account the anti-corrosion and anti-oxidation properties of pa coatings, but also long-term high temperature resistance, up to 3000 ℃ High temperature, uas yog tsis yooj yim rau cov kuab tshuaj raws li txheej.

G. Qhov sib txawv ntawm kev nyab xeeb thiab kev tiv thaiv ib puag ncig

Cov txheej txheem txheej txheem muaj peev xwm ua rau muaj kev nyab xeeb ntawm hluav taws thiab tawg thaum tsim khoom, thauj, khaws cia, thiab siv.Tshwj xeeb tshaj yog nyob rau hauv qhov chaw kaw, lawv muaj feem yuav ua rau tuag taus thiab tawg.Nyob rau tib lub sijhawm, cov kuab tshuaj organic tseem yuav ua rau qee yam kev puas tsuaj rau tib neeg lub cev.Cov ntaub ntawv nto moo tshaj plaws yog cov ntaub ntawv ntawm toluene ua rau mob qog noj ntshav, thiab toluene tsis raug tso cai siv lawm.Lub VOC ntawm cov kuab tshuaj raws li cov txheej txheem yog siab, thiab cov khoom siv ib txwm muaj ntau dua li ntau tshaj 400. Cov lag luam muaj kev kub ntxhov rau kev tiv thaiv ib puag ncig thiab kev nyab xeeb thaum tsim thiab siv cov tshuaj hnyav-raws li txheej.

Cov txheej txheem dej yog ib puag ncig zoo thiab muaj kev nyab xeeb hauv kev tsim khoom, kev thauj mus los, kev cia, thiab kev siv (tshwj tsis yog cov txheej txheem dej-raws li los ntawm qee cov tuam txhab tsis raug cai).

Xaus:

Cov txheej txheem dej thiab cov kuab tshuaj raws li cov txheej txheem muaj lawv tus kheej qhov zoo thiab qhov tsis zoo.Vim tias kev tshawb fawb txog cov txheej txheem dej hauv dej tseem tsis paub qab hau, kev ua haujlwm ntawm cov txheej txheem dej tsis tuaj yeem ua tau raws li qhov xav tau ntawm kev sib raug zoo.Kev siv cov kuab tshuaj raws li txheej txheej tseem tsim nyog.Qhov xwm txheej tiag tiag yog tshuaj xyuas thiab txiav txim, thiab nws tsis tuaj yeem tsis lees paub vim tias muaj qee yam tsis zoo ntawm qee yam xim.Nws ntseeg tau tias nrog kev tshawb fawb tob zuj zus ntawm cov txheej txheem dej-raws li cov txheej txheem, ib hnub, cov txheej txheem kev nyab xeeb thiab kev nyab xeeb tshiab yuav siv dav hauv txhua lub ces kaum ntawm lub ntiaj teb.