Silica Matting Agents hauv Xim

Matting cov neeg ua hauj lwm hauv cov txheej txheej yog cov khoom siv ntxiv uas tuaj yeem hloov kho qhov muag ntawm cov yeeb yaj kiab txheej txheej, ua kom zoo ntxhib nto. Thaum lub teeb yog npaj rau saum npoo, diffuse reflection tshwm sim, ua tiav cov nyhuv matte lossis matte. Ob qho xwm txheej yuav tsum tau ua rau txheej txheej los ua qhov ntxhib ntxhib zoo: (1) muaj ntau tus neeg sawv cev matting nrog qhov loj me me hauv cov zaj duab xis txheej; (2) tsim nyog ntim shrinkage tshwm sim thaum lub sij hawm ziab txheej txheem ntawm txheej zaj duab xis. Nyob rau tib lub sijhawm, kev siv cov tshuaj matting hauv cov coatings kuj yuav tsum ua kom tau raws li cov hauv qab no: (1) qhov refractive index yuav tsum yog ze li ntawm cov zaj duab xis-forming resin li ua tau (1.4 txog 1.6); (2) zoo hnav tsis kam thiab khawb tsis kam; (3) zoo dispersion thiab redispersibility hauv txheej.

Cov neeg sawv cev matting feem ntau muab faib ua cov organic thiab inorganic hom. Organic matting agents feem ntau yog thermosetting polymer cov ntaub ntawv, thaum inorganic matting agents mas silicas. Tsis tas li ntawd, tseem muaj cov tshuaj siv quav ciab matting thiab cov khoom siv silica matting. Lub refractive index ntawm amorphous silica yog 1.46, uas yog ze rau ntawm cov resins feem ntau siv nyob rau hauv kev lag luam coatings. Yog li ntawd, nws muaj cov khoom siv kho qhov muag zoo thaum siv hauv cov yeeb yaj kiab txheej thiab tau dhau los ua cov khoom siv rau cov neeg ua haujlwm siab-kawg xim matting. Muaj peb txoj hauv kev tseem ceeb rau cov silica matting agents: (1) gas-theem method; (2) txoj kev los nag; (3) sol-gel txoj kev.

Matting agents tau ua lub luag haujlwm tseem ceeb hauv kev lag luam coatings. Nrog rau kev txhim kho thev naus laus zis thiab kev xav tau ntau ntxiv rau txheej txheej, qhov kev thov rau cov neeg ua haujlwm zoo matting tau nce. Nyob rau hauv lub neej yav tom ntej, nrog kev txhim kho txuas ntxiv ntawm kev ua tau zoo ntawm cov neeg ua haujlwm matting thiab nthuav dav ntawm daim ntawv thov teb, kuv ntseeg tias cov neeg sawv cev matting yuav muaj kev lag luam dav dav.

Tiv tauj peb