Cov txheej txheej sab nrauv ua lub luag haujlwm tseem ceeb hauv kev tiv thaiv lub tsev los ntawm ib puag ncig, muab kev zoo nkauj thiab ua kom muaj kev ruaj ntseg ntev.Peb delve rau hauv cov khoom ntawm cellulose ethers, lawv lub luag hauj lwm raws li thickeners thiab rheology modifiers, thiab qhov cuam tshuam ntawm additives rau cov khoom xws li adhesion, weatherability, thiab tag nrho cov txheej durability.Rau cov neeg tsim khoom thiab cov chaw tsim khoom lag luam txhawm rau tsim cov txheej txheem zoo sab nrauv, kev nkag siab tiav ntawm cov khoom xyaw no yog qhov tseem ceeb.
qhia:
Cov txheej txheej sab nrauv yog qhov tseem ceeb hauv kev tiv thaiv cov tsev los ntawm huab cua hnyav, UV hluav taws xob, cov pa phem thiab lwm yam ib puag ncig.Cellulose ethers muab tau los ntawm tej yam ntuj tso cellulose thiab ntau yam additives pab txhawb kev txhim kho ntawm cov coatings.
Cellulose ethers nyob rau hauv sab nrauv phab ntsa coatings:
2.1.Txheej txheem cej luam ntawm cellulose ethers:
Cellulose ethers muaj xws li methylcellulose (MC), hydroxyethylcellulose (HEC), hydroxypropylcellulose (HPC), carboxymethylcellulose (CMC), thiab lwm yam, uas yog siv dav hauv kev siv sab nraum zoov vim lawv cov khoom tshwj xeeb.Hauv cov xim phab ntsa.Cov polymers no ua raws li cov thickeners, binders, thiab rheology modifiers, muab cov coatings lawv cov khoom tseem ceeb.
2.2.Thickening khoom:
Cellulose ethers yog cov thickeners zoo uas ua rau kom cov viscosity ntawm cov coatings, txhawb kev siv zoo dua thiab txo qis sagging.Cov qauv molecular ntawm cellulose ethers yog dej-retentive, kom ntseeg tau qhov zoo viscosity thiab daim ntawv thov sib xws.
2.3.Rheological hloov kho:
Kev tswj tus cwj pwm rheological ntawm cov txheej txheej sab nrauv yog qhov tseem ceeb kom ua tiav cov khoom siv uas xav tau.Cellulose ethers ua lub luag haujlwm tseem ceeb hauv kev hloov pauv rheology ntawm cov txheej txheem, txhim kho lawv cov dej ntws thiab qib theem.Qhov no txhim khu kev yooj yim ntawm daim ntawv thov thiab ua rau uniform txheej thickness.
Additives los txhim kho cov xim sab nrauv:
3.1.Adhesion txhawb:
Adhesion yog qhov tseem ceeb cuam tshuam rau kev ua haujlwm ntawm cov phab ntsa sab nrauv.Ntau yam additives, xws li silanes thiab acrylic polymers, txhim khu adhesion los ntawm kev txhawb ib tug muaj zog daim ntawv cog lus ntawm lub txheej thiab substrate.Qhov no ua kom lub sij hawm ntev durability thiab tsis kam mus tev los yog blistering.
3.2.Huab cua additives:
Cov xim sab nrauv raug rau ntau yam huab cua, nrog rau hnub ci, nag, thiab kub hloov pauv.UV stabilizers, hindered amine teeb stabilizers (HALS), thiab lwm yam huab cua additives tiv thaiv coatings los ntawm degradation los ntawm UV hluav taws xob thiab oxidation txheej txheem, yog li ncua lawv cov kev pab cuam lub neej.
3.3.Antifungal thiab tshuaj tua kab mob:
Cov chaw sab nrauv muaj qhov cuam tshuam rau kev loj hlob ntawm cov kab mob lom, nrog rau cov pwm thiab algae.Qhov sib ntxiv ntawm cov tshuaj tua kab mob thiab tshuaj tua kab mob (xws li biocides) tiv thaiv kev loj hlob ntawm cov kab mob thiab tswj cov tsos mob thiab ua kom ntev ntawm cov txheej.
3.4.Waterproofing tus neeg saib xyuas:
Waterproofing agents yog qhov tseem ceeb rau cov xim sab nrauv los tiv thaiv dej nkag, uas tuaj yeem ua rau kev ua haujlwm tsis zoo thiab poob.Silicones, silanes thiab fluorinated compounds feem ntau yog siv cov tshuaj tua kab mob uas tsim kom muaj kev tiv thaiv hydrophobic thiab ua rau cov txheej txheem tiv thaiv dej.
3.5.Impact resistance enhancer:
Cov chaw sab nrauv raug cuam tshuam rau kev puas tsuaj los ntawm ntau qhov chaw, nrog rau lawg lossis kev sib cuag ntawm lub cev.Qhov sib ntxiv ntawm qhov cuam tshuam-tiv thaiv, xws li elastomeric polymers lossis microspheres, tuaj yeem txhim kho cov txheej txheem muaj peev xwm tiv taus kev ntxhov siab thiab tswj nws cov khoom tiv thaiv.
Synergy ntawm cellulose ethers thiab additives:
Kev sib xyaw ntawm cellulose ethers thiab additives nyob rau hauv cov xim sab nrauv feem ntau tsim ib tug synergistic nyhuv uas txhim kho tag nrho cov kev ua tau zoo.Lub thixotropic xwm ntawm cellulose ethers complements lub dispersing thiab stabilizing zog ntawm tej yam additives, txhim kho daim ntawv thov thiab zaj duab xis tsim.
Case Studies thiab piv txwv:
Tshooj lus no muab cov piv txwv ntawm lub ntiaj teb tiag tiag ntawm cov xim pleev xim sab nrauv uas ua tiav nrog cov cellulose ethers thiab ntau yam khoom ntxiv.Cov ntaub ntawv tshawb fawb qhia txog cov teeb meem tshwj xeeb uas tau hais tseg, kev txhim kho tau ua tiav, thiab tag nrho kev ua tiav ntawm kev tsim nyob rau hauv ib puag ncig sib txawv.
Yav tom ntej trends thiab innovation:
Raws li qhov kev thov rau kev ua tau zoo ntawm cov txheej txheem sab nrauv txuas ntxiv zuj zus, kev lag luam tau pom cov kev tshawb fawb txuas ntxiv thiab kev txhim kho.Cov qauv yav tom ntej tuaj yeem suav nrog kev sib koom ua ke ntawm cov txheej txheem ntse, cov khoom siv nano siab heev thiab cov khoom siv ntxiv kom ruaj khov ntxiv kom ruaj khov, ib puag ncig tus phooj ywg thiab lub zog ua haujlwm.
nyob rau hauv xaus:
Cellulose ethers thiab additives ua lub luag haujlwm tseem ceeb hauv kev txhim kho cov txheej txheem sab nrauv.Kev nkag siab zoo ntawm lawv cov khoom thiab kev sib cuam tshuam yog qhov tseem ceeb rau cov neeg tsim khoom thiab cov tuam txhab nrhiav kev tsim cov txheej txheem nrog kev txhim kho durability, adhesion, weatherability thiab tag nrho cov zoo.Kev txhim kho txuas ntxiv ntawm cov ntaub ntawv thiab thev naus laus zis hauv cheeb tsam no muaj kev cia siab rau kev nce qib ntxiv hauv cov txheej txheem sab nrauv rau kev tsim kho kev lag luam.
Post lub sij hawm: Dec-18-2023