Pom zoo noj thiab cov ntsiab lus tseem ceeb rau kev siv Hydrochloric Precipitated Silica hauv txheej

Hydrochloric precipitated silica, a high-purity daim ntawv ntawm amorphous silica, plays lub luag hauj lwm tseem ceeb nyob rau hauv niaj hnub txheej txheej formulations. Paub txog nws cov qauv zoo ib yam, siab dawb, thiab tswj porosity, nws ua hauj lwm raws li ib tug multifunctional additive uas txhim kho txheej kev ua tau zoo ntawm cov tsos, durability, thiab workability.

Hauv cov txheej txheej, hydrochloric precipitated silica feem ntau yog siv los ua tus neeg sawv cev matting, rheology hloov kho, thiab qhov chaw txhim kho. Txawm li cas los xij, nws txoj kev ua tau zoo feem ntau nyob ntawm tus nqi sib xyaw ua ke hauv kev tsim. Yog li kev txiav txim siab npaum li cas yog qhov tseem ceeb kom ua tiav qib siab gloss, zaj duab xis hardness, thiab kev ntxhib los mos.

Tsab ntawv xov xwm no muab cov lus pom zoo ntawm kev pom zoo ntau npaum li cas rau ntau lub tshuab txheej txheej thiab tshuaj xyuas cov ntsiab lus tseem ceeb cuam tshuam rau silica ntxiv.

Qhov zoo tshaj plaws ntxiv qib ntawm txheej qib silica hmoov sib txawv nyob ntawm seb hom txheej, kev tsim viscosity, binder system, thiab lub hom phiaj pom kev. Cov lus hauv qab no qhia txog cov feem ntau pom zoo ntau npaum li cas thiab lawv cov haujlwm sib xws:

Txheej Hom Pom Zoo Dosage Main Function
Dej-raws li acrylic xim 0.5% - 2% Matting rheology tswj
UV-kho xim 0.5% - 3% Matting txhim kho kev puas tsuaj
Ntoo coatings 3% - 8% Matte nyhuv txhim kho qhov zoo nkauj
Muaj xim hlau xim 3% - 10% Matting optimized nto tsos
Hmoov txheej 0.1% - 0.5% Matting txhim kho flowability

Feem ntau, qis dua (0.5-3%) yog txaus rau pob tshab, nyias-zaj duab xis, los yog UV-kho tau coatings, qhov twg gloss tswj thiab zaj duab xis clarity yog qhov tseem ceeb.
Cov qib siab ntxiv, feem ntau 3-10%, raug pom zoo rau cov ntoo, hlau, lossis cov txheej txheem kom ua tiav cov matting sib sib zog nqus thiab txhim kho tactile zog.

Rau cov hmoov coatings, qhov ntau ntxiv muab tub lim tuaj yeem cuam tshuam kev khiav thiab kho kev ua haujlwm, cov ntsiab lus silica yuav tsum nyob qis dua 0.5%.

Ntau qhov kev tsis sib haum xeeb cuam tshuam qhov kev pom zoo ntawm hydrochloric precipitated silica hauv cov txheej. Kev nkag siab txog cov xwm txheej no ua rau cov neeg tsim qauv sib npaug ntawm kev ua tau zoo, tus nqi, thiab kev pom zoo.

Lub matting efficiency ntawm silica yog feem ntau txiav txim los ntawm particle loj tis thiab pore qauv.

Particle Loj Distribution:
Ib qho me me me me faib ua rau matting uniformity thiab txo qhov ntau npaum li cas kom ncav cuag qib gloss. Raws li particle sizing minimizes nto defects thiab ua kom du, homogeneous txheej.

Porosity:
silica ntxeem tau (pore ntim 0.8-2.0 cm³ / g) qhia tau zoo heev matting efficiency-txog 30% siab dua qib qis-porosity. Cov ntaub ntawv zoo li no ua rau lub teeb tawg tau zoo dua, tso cai rau cov neeg tsim qauv siv cov silica tsawg dua yam tsis muaj qhov pom kev zoo.

Qhov chaw chemistry ntawm silica-hydrophilic los yog hydrophobic- ncaj qha cuam tshuam nws txoj kev sib raug zoo nrog cov txheej txheem sib txawv.

Hydrophilic Qib:
Tsim los rau cov txheej txheem dej, hydrophilic hydrochloric precipitated silica disperses yooj yim hauv aqueous systems. Rau kev ua tau zoo thiab kev tswj hwm ntws, qhov pom zoo ntxiv yog Tsawg dua lossis sib npaug li 5% ntawm tag nrho cov qauv hnyav.

Hydrophobic Qib:
Nyob rau hauv cov kuab tshuaj raws li los yog UV-kho tshuab, hydrophobic silica qhia tau zoo heev compatibility thiab tsis muaj noo noo nqus. Nws tuaj yeem ntxiv rau qib txog li 15% yam tsis muaj kev cuam tshuam rau cov yeeb yaj kiab qib lossis gloss sib xws.

Xaiv qhov kev kho saum npoo kom zoo ua kom ruaj khov dispersion, tiv thaiv agglomeration, thiab tswj cov formulation stability.

Thaum nce cov ntsiab lus silica tuaj yeem txhim kho matting lossis rheological zog, kev sib ntxiv ntau dhau tuaj yeem ua rau kev ua haujlwm tsis zoo.

Excessive Addition (>15%)
Overloading silica tuaj yeem ua rau txo cov zaj duab xis hardness, siab dua roj nqus, thiab muaj peev xwm nto roughness.

Optimal Dosage Determination
Qhov tseeb tshaj plaws yog los tsim ib qho "ntxiv tus nqi-gloss nkhaus" los ntawm kev ntsuas gradient. Los ntawm kev ntsuas cov qib gloss ntawm ntau yam silica ntau npaum, cov neeg tsim khoom tuaj yeem txheeb xyuas qhov sib npaug ntawm qhov pom kev pom thiab lub zog txhua yam.

Thaum koom nrog hydrochloric precipitated silica rau hauv cov txheej txheem txheej txheem, ntau yam kev coj ua zoo tshaj plaws tau pom zoo:

Pre-dispersion: Ua ntej sib tov cov silica nrog cov resin, hnyav, los yog cov neeg ua dej ntub dej ua kom muaj kev cuam tshuam zoo thiab tiv thaiv flocculation.

Stepwise Ntxiv: Maj mam qhia silica thaum sib tov kom tsis txhob muaj kev sib tw hauv cheeb tsam.

Kev Ntsuas & Kev Kho Kom Zoo: Ib txwm siv tau ntau npaum li cas los ntawm kev kuaj sim, xav txog kev ntsuas gloss, kev ntsuas viscosity, thiab ntsuas qhov tawv tawv.

Rau cov neeg tsim qauv nrhiav kev ua kom zoo tshaj plaws nyob rau ntau lub txheej txheej txheej txheej, JK SILICA muab cov qib customized ntawm txheej qib silica hmoov nrog cov khoom zoo thiab cov khoom xa tawm.

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Hu rau tam sim no

Hu rau JK SILICA hnub no kom tau txais kev txhawb nqa lossis cov lus pom zoo rau koj cov txheej txheem txheej txheej.