Ekubeni iipropati ze-hydroxypropyl methylcellulose zifana nezinye ii-ethers ezinyibilikayo emanzini, ingasetyenziswa kwiingubo ze-emulsion kunye nezixhobo zokugquma i-resin ezinyibilikayo emanzini njenge-arhente yokwenza ifilimu, i-thickener, i-emulsifier kunye ne-stabilizer, njl.njl., enika ifilimu yokugquma ukumelana okuhle nokurhawuzelelwa. Ingubo ehambelanayo kunye nokunamathela, kunye noxinzelelo oluphuculweyo lomphezulu, ukuzinza kwii-asidi kunye neziseko, kunye nokuhambelana nee-pigment zesinyithi.
Ekubeni i-HPMC ine-gel point ephezulu kune-MC, ikwamelana nohlaselo lweebhaktheriya kunezinye ii-ether ze-cellulose, ngoko ke ingasetyenziswa njenge-arhente yokutyebisa ii-emulsion coatings zamanzi. I-HPMC inozinzo oluhle lokugcina i-viscosity kunye nokusasazeka kwayo okugqwesileyo, ngoko ke i-HPMC ifanelekile ngakumbi njenge-dispersant kwii-emulsion coatings.
Ukusetyenziswa kwe-hydroxypropyl methyl cellulose kwishishini lokugquma kulandelayo.
1. Ukuchasana okuhlukeneyo kokuguguleka kwepeyinti yoqwalaselo lwe-HPMC, ukumelana nobushushu obuphezulu, inkcazo yokulwa neentsholongwane, ukumelana nokuhlanjwa kunye nokuzinza kwee-asidi kunye neziseko kungcono; ingasetyenziswa njengesixhobo sokucoca ipeyinti esiqulethe i-methanol, i-ethanol, i-propanol, i-isopropyl alcohol, i-ethylene glycol, i-acetone, i-methyl ethyl ketone okanye i-diketone alcohol thickener; Iingubo ezenziwe nge-HPMC ezifakwe kwi-emulsified zinobuqhophololo obumanzi obuhle kakhulu; i-HPMC kune-HEC kunye ne-EHEC kunye ne-CMC njengoko i-HPMC inefuthe elingcono kune-HEC kunye ne-EHEC kunye ne-CMC njengesixhobo sokuxuba ipeyinti.
2. I-hydroxypropyl methyl cellulose efakwe endaweni ephezulu inokumelana ngcono nohlaselo lweebhaktheriya kune-substitution ephantsi, kwaye inokuzinza okungcono kwe-viscosity kwi-polyvinyl acetate thickeners. Ezinye ii-cellulose ethers zigcinwe ngenxa yokuwohloka kwe-cellulose ether kwaye zenza i-coating viscosity inciphe.
3. I-paint stripper ingaba yi-HPMC enyibilikayo emanzini (apho i-methoxy ingama-28% ukuya kuma-32%, i-hydroxypropoxy ingama-7% ukuya kuma-12%), i-dioxymethane, i-toluene, i-paraffin, i-ethanol, i-methanol configuration, iya kusetyenziswa kumphezulu othe nkqo, kunye ne-viscosity kunye ne-volatility efunekayo. Le paint stripper isusa uninzi lwee-spray paints zesiqhelo, ii-varnishes, ii-enamel, kunye nee-epoxy esters ezithile, ii-epoxy amides, ii-epoxy amides ezikhatalyzed, ii-acrylates, njl. Iipeyinti ezininzi zinokuxotyulwa kwimizuzwana embalwa, ezinye iipeyinti zifuna imizuzu eli-10 ukuya kweli-15 nangaphezulu, le paint stripper ifanelekile ngokukodwa kwiindawo zomthi.
4. Ipeyinti ye-emulsion yamanzi inokwenziwa ziinxalenye ezili-100 ze-pigment ezingaphiliyo okanye ze-organic, iinxalenye eziyi-0.5 ~ 20 ze-alkyl cellulose enyibilikayo emanzini okanye i-hydroxyalkyl cellulose kunye neenxalenye eziyi-0.01 ~ 5 ze-polyoxyethylene ether okanye i-ether ester. Umzekelo, umbala ufunyanwa ngokuxuba iinxalenye eziyi-1.5 ze-HPMC, iinxalenye eziyi-0.05 ze-polyethylene glycol alkyl phenyl ether, iinxalenye ezingama-99.7 ze-titanium dioxide kunye neenxalenye eziyi-0.3 ze-carbon black. Emva koko umxube uxutywa neenxalenye eziyi-100 ze-50% ye-polyvinyl acetate eqinileyo ukuze kufunyanwe ulwelo, kwaye akukho mahluko phakathi kwefilimu yolwelo olomileyo eyenziwe ngokuyifaka ephepheni elingqindilili kwaye uyihlikihle kancinci ngebrashi.
Ixesha lokuthumela: Meyi-20-2022