Xim thiab kua roj vanish: hom, qhov sib txawv, khoom thiab piav qhia

2024 Tus sau: Howard Calhoun | [email protected]. Kawg hloov kho: 2023-12-17 10:28

Cov xim thiab cov kua roj vanish tseem yog ib qho kev nyiam tshaj plaws rau kev kho kom zoo nkauj sab hauv thiab sab nrauv ntawm ntau yam qauv. Ntxiv mus, cov cheeb tsam ntawm daim ntawv thov ntawm cov khoom no txuas ntxiv nthuav dav, uas tau lees paub los ntawm kev hloov kho tshiab tiv thaiv cov khoom sib xyaw. Muaj cov xim tshwj xeeb thiab cov kua roj vanish los tiv thaiv kev xeb ntawm qhov chaw, txhim kho hluav taws thiab tiv thaiv kab mob lom. Nyob rau tib lub sijhawm, cov khoom zoo nkauj ntawm cov coatings tseem tab tom tsim, kuj ua rau muaj qhov tshwm sim tshiab hauv kev lag luam tshuaj lom neeg.

qauv qauv ntawm cov xim sib tov

Kom tau txais cov txheej txheem ntau yam, ruaj khov thiab ua kom zoo nkauj, cov kws tshaj lij ntawm cov xim thiab cov kua roj vanish sib xyaw tsim cov zaub mov txawv uas suav nrog kev siv ntau yam. Lub hauv paus ntawm feem ntau cov mix yog tsim los ntawm muab tub lim - ib tug tivthaiv uas muab cov sib tov txaus viscosity thiab pom zaj duab xis thickness. Active Cheebtsam yog lub luag hauj lwm rau "ua hauj lwm" zoo, uas loj txiav txim siabcov cim qhia ntawm kev faib tawm ntawm ntau hom xim thiab varnishes. Cov muaj pes tsawg leeg ntawm ib tug raug tov muaj xws li additives, solvents, pigment tshuaj thiab ib tug binder puag. Piv txwv li, additives ua raws li ib yam ntawm kev ua tau zoo modifier - lawv nce ntws, muab haze, daim ntawv insulating films, thiab lwm yam.

Pigment ntsiab yog lub luag haujlwm rau cov xim, thiab cov kuab tshuaj tso cai rau koj kom ua tiav qhov xav tau sib xws ntawm qhov sib tov yam tsis muaj kev suav ntxiv. Raws li rau lub binder, qhov no yog ib qho tseem ceeb ntawm cov khoom muaj pes tsawg leeg, uas nkag mus rau hauv kev ua si tom qab cov khoom dries. Nws yog nws leej twg thaum kawg txhawb kev tsim cov tawv tawv, elastic lossis xoob txheej nrog qee yam kev txawj thiab lub cev zoo.

Compounds raws li silicone binders

Cov pab pawg ntau tshaj plaws ntawm cov xim thiab cov kua roj vanish, qhov chaw uas yog txiav txim siab los ntawm kev ua tau zoo txaus nyiam. Polycondensation sib tov sawv cev rau hom xim tseem ceeb thiab cov kua roj vanish raws li silicone resins - txog 40%. Hauv particular, alkyd, epoxy, polyurethane thiab lwm yam txheej txheej nrog cov txheej txheem thoob ntiaj teb tau dhau los ua qhov dav. Cov ntaub ntawv zoo li no suav nrog rau kev siv sab hauv tsev thiab sab nraum zoov - raws li facade xim. Qhov cuam tshuam rau kev hloov kho thiab kev ua yeeb yaj kiab ua kom yooj yim tso cai rau kev siv cov khoom siv silicone hauv cov ntawv tshwj xeeb. Yog li, ntxiv rau cov kev xav tau ntawm tsev neeg, hom xim no yog siv los ua cov khoom siv thiab cov khoom siv tshwj xeeb. Ua tsaug rau electroplating, cov khoom siv tuaj yeem siv rau cov hlau tsis muaj hlau nrog ib txoj kev tshiab electrophoresis.

Bitumen-based compounds

Lacquers, xim, enamels thiab ntau yam roj nrog cov teebmeem hnyav yog tsim los ntawm bitumen hnub no. Qee cov tuam txhab tsim cov kab tag nrho cov xim thiab cov kua roj vanish ua los ntawm cov khoom siv ntuj tsim. Lub bitumen nws tus kheej yuav muaj rosin ntuj, zaub roj, dawb ntsuj plig thiab hnyav. Nyob rau tib lub hauv paus, ib pawg ntawm amber varnishes yog tsim, uas yog siv nyob rau hauv lub teb chaws kev khwv nyiaj txiag. Yog hais tias peb tham txog kev ua hauj lwm cov khoom, ces yuav luag tag nrho cov hom ntawm bitumen xim thiab varnishes yog yus muaj los ntawm ib tug high degree ntawm viscosity, zoo insulating khoom thiab mechanical zog. Hauv qee qhov kev siv, cov txheej txheem tshwj xeeb rau kev siv cov ntaub ntawv zoo li no tau koom nrog - los ntawm vuam. Txoj kev tso no muab kev sib khi ua tiav ntawm qhov chaw nrog kev tiv thaiv lub cev. Tsis tas li ntawd, tsis zoo li yob thiab zaj duab xis coatings, hnyav bituminous xim tsis muaj teeb meem rau ib puag ncig.

Cellulose ester formulations

Cov khoom no tau los ntawm kev sib xyaw cellulose nrog cov kuab tshuaj - cawv thiab kua qaub. Cov ntaub ntawv tsim cov yeeb yaj kiab tau txais, uas, txawm hais tias tsis muaj feem cuam tshuam ncaj qha rau cov polymers, tab sis nyob rau hauv cov nqe lus ntawm kev ua tau zoo yog zoo ib yam nrog cov tswv yim hais txog hluavtaws hom xim thiab varnishes thiab lawv cov yam ntxwv, xws li thermoplasticity, solubility nyob rau hauv.organic fillers thiab tshuaj tiv thaiv. Txawm li cas los xij, kuj tseem muaj kev zam - piv txwv li, cellulose esters muab cov txheej txheem kom tsis muaj peev xwm tiv taus cov kua qaub thiab alkalis, thaum cov yooj yim tiv taus qhov kub thiab txias yam tsis tso cov kua qaub dawb. Kev sib xyaw nrog cov khoom dielectric tuaj yeem tshwm sim hauv ob pawg.

Nyob rau hauv kev xyaum, cov xim thiab enamels los ntawm cellulose ethers yog siv los hloov kho uas muab cov teebmeem ntawm thickeners, stabilizers thiab plasticizers. Nyob rau hauv daim ntawv ntawm cov khoom ywj pheej, cov khoom no yog siv los ua cov khoom siv txheej, borehole av nkos thiab dye.

Kev lag luam hom xim thiab cov kua roj vanish

Vim muaj kev txwv kev lag luam thiab tsim cov kev txawj thiab lub cev zoo, cov khoom lag luam no muaj cov cai tshwj xeeb. Txij li thaum lub ntim loj ntawm cov khoom siv feem ntau tau siv, cov kws tshaj lij tau ntsib nrog txoj haujlwm ntawm kev ua kom zoo ntawm cov txheej txheem tsim khoom kom tau txais cov khoom zoo, tab sis kuj yog cov khoom pheej yig. Hauv kev lag luam hom xim thiab cov kua roj vanish, cov khoom ntawm tshuaj lom neeg thiab lub cev tiv thaiv tawm los rau saum, vim tias cov txheej txheem no feem ntau raug kho nrog cov qauv tsim thiab cov qauv ua haujlwm hauv cov xwm txheej hnyav. Piv txwv li, varnishes raws li fatty acids thiab harpius ester yog haum rau txheej lithographed ntawv hlau. Cov xim ua los ntawm rosin-glyphthal resins feem ntau yog siv los ua ib txoj hauv kev ruaj khov ntawm txhuas thiab magnesium alloys.

Siv hauv kev lag luam thiab cov kua roj vanish,ua los ntawm molten resin. Cov ntaub ntawv nyoos yog pib hloov nrog cov roj zaub nrog ntxiv ntawm cov desiccants, thiab tom qab ntawd, nyob ntawm lub hom phiaj, cov khoom siv ntxiv tuaj yeem muab ntxiv rau qhov muaj pes tsawg leeg. Raws li txoj cai, amber lacquer yog siv nyob rau hauv txheej ntawm canning tinplate.

Powder paints

Cov no yog cov khoom sib xyaw ua ke ntawm cov neeg tawg rog ntawm cov xim thiab cov kua roj vanish. Kev ua haujlwm ntawm cov yeeb yaj kiab tsim cov khoom hauv qhov no yog ua los ntawm cov khoom sib cais los ntawm cov cua tam sim no. Ib qho tseem ceeb uas yuav tsum tau ua rau cov khoom siv hmoov yog tias lawv yuav tsum tau muab faib sib npaug ntawm qhov chaw ua haujlwm. Raws li twb tau sau tseg, qhov nruab nrab dispersion rau cov hom xim thiab cov kua roj vanish txheej thiab cov ntaub ntawv yog tsim los ntawm huab cua nws tus kheej, thiab tsis yog los ntawm dej nrog cov kuab tshuaj. Ntawm qhov tod tes, qhov no muab kev lag luam thiab kev ua haujlwm zoo, txij li tus neeg pleev kob tau tshem ntawm qhov tsis yooj yim ntawm kev npaj cov khoom siv raw rau diluting cov khoom. Ntawm qhov tod tes, kev ua haujlwm yog nqa tawm siv lub tshuab compressor thiab rab phom tsuag. Kev tshuaj tsuag yog nyob rau hauv kev kawm, uas kuj yuav tsum tau ib co koom haum peev, tab sis vim lub efficiency ntawm lub sprayer, tus nqi pib yuav yooj yim offset.

pab varnishes

Qhov sib txawv tseem ceeb ntawm cov kua roj vanish thiab xim yog nws lub peev xwm los tsim cov txheej tawv tawv tom qab ziab. Ib qho kev zam yog bituminous insulating tebchaw, uas tsim ib zaj duab xis kaw thiab tsis tsim los rau kev tiv thaiv kev ua haujlwm. Lub luag hauj lwm ntawm cov binder feem ntau yog ua los ntawm resins (artificiallos yog ntuj), nrog rau cov roj zaub. Raws li cov kuab tshuaj, cov khoom siv tshwj xeeb organic lossis dej yog siv. Los ntawm txoj kev, cov dej-soluble hom xim thiab cov kua roj vanish thiab lawv cov yam ntxwv yog optimally haum rau ib tug neeg siv nyob rau hauv lub neej txhua hnub - varnishes ntawm no hom yog ib puag ncig tus phooj ywg, yog li ntawd lawv tuaj yeem siv tau qhib rau hauv thaj chaw nyob. Cov neeg tsim khoom lawv tus kheej nyiam tsom qhov no lossis daim ntawv qhia no rau cov haujlwm tshwj xeeb. Yog li, muaj cov khoom tshwj xeeb rau varnishing facade nto, parquets, yas qhov chaw, hlau qauv, thiab lwm yam.

Enamels

Qhov tseeb, cov no yog cov xim oxidizing lossis epoxy kua txheej uas txawv los ntawm lawv cov nyhuv insulating thiab abrasion tsis kam. Vim muaj kev ruaj ntseg, cov khoom siv enamel tau siv dav hauv kev kho cov chaw hauv pem teb. Tom qab hardening, lub txheej tiv thaiv cyclic thiab static loads, resists abrasive influences thiab tsis poob nws cov yam ntxwv zoo nkauj. Enamel yog siv los ua cov xim thiab cov kua roj vanish thiab rau kev kho kom zoo nkauj facade. Sab nrauv kho kom zoo nkauj ntawm phab ntsa, ru tsev thiab txawm tias qhov chaw nres tsheb nrog txoj hauv kev tuaj yeem ua tau zoo nrog cov txheej txheem enamel tsim nyog rau kev siv sab nraum zoov. Piv txwv li, muaj PVC, furyl thiab epoxy cov ntaub ntawv uas muab kev tiv thaiv tiv thaiv UV hluav taws xob, huab cua, thiab lwm yam.

Ib pawg tshwj xeeb ntawm cov xim thiab cov kua roj vanish uas tsis suav nrogntu ntawm lub tsev putty mortars, tab sis ib nrab ua lawv cov dej num. Feem ntau cov no yog cov dej-dispersion hom xim thiab cov kua roj vanish, cov khoom tseem ceeb ntawm cov uas yog muab cov nyhuv leveling, rwb thaiv tsev thiab nce adhesion. Feem ntau, cov no yog cov kev npaj sib tov uas tshem tawm qhov tsis xws luag hauv qhov ntxhib saum npoo, uas nws tau npaj los siv cov xim pleev xim rau yav tom ntej. Kev hloov kho ntawm cov primers sib cais tuaj yeem ua cov haujlwm ntawm kev kho tshuaj tua kab mob, tshuaj lom neeg thiab tiv thaiv corrosion.

Kev cais raws lub hom phiaj

Vim tias ntau txoj haujlwm uas cov xim thiab cov kua roj vanish ua tau dav heev, cov tuam txhab siv ntau lub cim los qhia qhov xwm txheej ntawm kev siv cov khoom tshwj xeeb. Ntawm theem pib, hom thiab lub hom phiaj ntawm cov xim thiab cov kua roj vanish tuaj yeem paub qhov txawv:

• Huab cua resistant formulations. Rau sab nrauv kho kom zoo nkauj ntawm tsev thiab cov qauv. Kuj hu ua facade paints.
• txwv huab cua tiv thaiv tebchaw. Tsim los siv sab hauv tsev nrog rau kev tiv thaiv sab nraum zoov.
• Cov tshuaj tiv thaiv. Cov txheej tiv thaiv uas tsim los rau kev rwb thaiv tsev ib ntus ntawm cov khoom siv, cov khoom siv lossis cov qauv tsim.
• dej tsis qab formulations. Cov ntaub ntawv zam rau cov dej noo, chav dej thiab kev sib cuag ncaj qha nrog dej. Yuav siv tau rau hauv cov chav uas muaj av noo siab.
• Tshwj xeeb cov xim sib xyaw. Cov ntaub ntawv uas tsim nyog rau kev ua haujlwm tshwj xeeb - lawv yuav muaj qhov siabchemical tsis kam, kub tsis kam, suab rwb thaiv tsev thiab hluav taws xob conductivity.

Zaj lus

Kev xaiv topcoat kom zoo tuaj yeem tsis tsuas yog txhim kho qhov pom ntawm qhov chaw, tab sis kuj txuas ntxiv lub neej ntawm cov khoom siv hauv paus. Ua rau kev tiv thaiv thiab kho kom zoo nkauj ntawm ntau hom xim thiab varnishes, koj tuaj yeem xaiv qhov kev xaiv zoo tshaj plaws rau kev ua haujlwm sab nraud rau txhua rooj plaub. Tab sis kuj tsis quav ntsej qhov kev ua tau zoo thib ob ntawm txheej txheej. Cov no suav nrog kev ua phooj ywg ib puag ncig, kev sib raug zoo nrog cov khoom siv hauv paus, thiab kev saib xyuas yuav tsum tau ua.