Silicon Dioxide rau Painting thiab Txheej Kev Lag Luam

Silica yog ib qho kev sib xyaw ua ke uas feem ntau siv hauv kev lag luam xim thiab txheej. Nws cov khoom tshwj xeeb thixotropic ua rau nws muaj txiaj ntsig zoo rau kev tswj cov viscosity thiab tiv thaiv micro-tawm hauv cov xim thiab txheej. Tsuas yog ib qho me me ntawm silica ntxiv rau cov xim, lub txheej tuaj yeem tshem tawm cov tee dej nyob rau ntawm qhov chaw. Qhov no tau ua rau muaj kev siv ntau ntawm silica hauv kev lag luam.

Hauv cov txheej txheem polyester tsis zoo, ntxiv qhov sib xyaw ntawm silica ntawm 0.5-2 feem pua ​​​​ tuaj yeem tiv thaiv cov kua dej thiab wrinkles ntawm qhov chaw ntsug. Silica yog ib qho kev xaiv zoo tshaj plaws rau cov xim ntxiv vim nws tsis cuam tshuam rau pob tshab, adhesion, lossis lwm yam kev xav tau ntawm cov xim. Nws siv tau dhau los ua qhov tseem ceeb hauv kev tsim cov txheej txheem ntau lawm, suav nrog cov ntaub ntawv luam ntawv thiab luam ntawv.

Hauv kev lag luam xim, qhov sib ntxiv ntawm silica tuaj yeem tiv thaiv cov xim xim thiab txhim kho cov xim adsorption. Tsis tas li ntawd, nws siv los ua ib qho muab tub lim rau hauv cov xim emulsion tuaj yeem txhim kho qhov kub thiab txias, tso cai rau cov xim zoo dua. Qhov no tau txhawb txoj kev loj hlob ntawm cov khoom siv silica tshiab uas tuaj yeem ua tau raws li cov cai ntawm cov xim pleev xim thiab cov xim number case ntau lawm.

Hauv kev tsim cov nitrocellulose coatings, silica tuaj yeem muab ntxiv ua tus neeg saib xyuas lub teeb thiab txhim kho cov khoom tsis-tawm ntawm cov xim. Nws kuj muab cov qib siab ntawm pob tshab, zoo dispersion, thiab zoo heev hnav tsis kam. Silica txhim kho cov xim zoo nkauj yam tsis muaj qhov cuam tshuam tsis zoo, thiab qhov no tau ua rau nws muaj kev xaiv nrov rau kev lag luam.

Thaum kawg, ntxiv silica rau luam ntawv number case tau ua pov thawj tias muaj txiaj ntsig zoo hauv kev txhim kho cov tshuaj ntxuav tes thiab ua kom cov xim ci ntsa iab. Ntawm qhov concentration tsawg li 0.5 feem pua, silica tuaj yeem tiv thaiv qhov cuam tshuam ntawm cov ntawv luam tawm thiab txhim kho kev luam ntawv zoo.

Hauv kev xaus, silica yog ib qho khoom muaj txiaj ntsig uas tuav cov ntawv thov zoo hauv kev lag luam xim thiab coatings. Nws cov khoom thixotropic tau ua rau nws yog ib qho zoo tagnrho additives nyob rau hauv coatings, number case, thiab xim ntau lawm, ua rau nws ib tug tsim nyog muaj nyob rau hauv kev lag luam. Nrog rau kev tshawb fawb ntau ntxiv, kev siv cov silica hauv cov xim thiab cov coatings tau teeb tsa kom loj hlob thiab hloov zuj zus mus, coj kev txhim kho ntau ntxiv rau kev lag luam.

Tiv tauj peb