English
Việt Nam
ไทย
عربي 
Deutsch
slovenčina
Français
slovenščina
Norsk
România limbi
Español
Dab tsi yog lub luag haujlwm ntawmsilica rau matting hmoovnyob rau hauv cov kuab tshuaj coatings?
Lub luag hauj lwm ntawm silica matting hmoov nyob rau hauv hnyav txheej yog dab tsi? Feem ntau siv matting hmoov tuaj yeem muab faib ua cov organic thiab inorganic hom: inorganic matting tus neeg saib xyuas feem ntau yog silicon dioxide matting tus neeg saib xyuas, nws cov tshuaj muaj pes tsawg leeg yog ultra-fine sio2, uas tuaj yeem muab faib ua ob hom: organic teeb meem kho thiab tsis kho. Tam sim no peb tsuas yog tham txog daim ntawv thov ntawm silica matting tus neeg sawv cev hauv txheej txheej. Pigments los yog fillers yog ntxiv rau txheej thiab uniformly faib nyob rau hauv lub txheej zaj duab xis los tsim ib tug me ntsis ntxhib nto. Lub teeb calcium carbonate los yog talc hmoov yog siv los tsim matt txheej nrog ntau npaum li cas, uas feem ntau tshaj qhov tseem ceeb ntawm cov xim ntim ntawm txheej txheej, ua rau lub cev tsis zoo ntawm txheej txheej, xws li delamination thiab nag lossis daus. Kev siv cov hmoov matt tuaj yeem zam qhov loj ntawm cov khoom nto, qhov loj dua qhov micro roughness, thiab qis dua qhov ci.
Matting hmoov
Lub matting mechanism ntawm silica matting hmoov: cov kua roj vanish tsis muaj matting tus neeg saib xyuas yog tiaj tus. Thaum lub teeb mus txog qhov chaw ntawm daim iav zaj duab xis, ib feem ntawm qhov teeb meem teeb yog absorbed, ib feem yog reflected, thiab ib feem ntawm lub reflection ua rau cov zaj duab xis ci. Cov xim zaj duab xis uas muaj silica matting tus neeg sawv cev yog sib npaug ntawm cov xim pleev xim, ua rau me ntsis ntxhib nto.
Nws tuaj yeem pom meej meej los ntawm cov duab thaij duab hluav taws xob hauv tshuab hluav taws xob ntawm cov duab yeeb yaj kiab uas cov khoom ploj mus tau sib npaug hauv zaj duab xis. Thaum qhov teeb meem tshwm sim mus txog qhov tsis sib xws xim zaj duab xis nto, nws yuav tsim diffuse reflection, uas yog, tawg yuav ua rau tsis tshua muaj gloss matt thiab extinction tsos. High porosity yog saws. Zoo particle loj tis thiab tsim nyog kho deg ntawmsilica matting tus neeg sawv cevtuaj yeem tau txais cov nyhuv matting zoo.
Silica matting hmoov: cov hmoov ua los ntawm ntuj sio2 los ntawm kev sib tsoo muaj cov ntsiab lus siab impurity. Lub ntsiab tivthaiv yog sio2, uas tsis tuaj yeem hu ua silicon dioxide thiab tsis muaj kev ploj tuag. Nws tuaj yeem tsuas yog siv los ua muab tub lim hauv cov xim, tsis muaj cov nyhuv matting. Silica matting tus neeg saib xyuas, raws li txheej txheej, feem ntau tsim sio2, uas tau muab faib ua gaseous silica thiab precipitated silica. Nws microstructure yog amorphous lossis glassy.
Silica system tsim los ntawm txoj kev nag lossis daus feem ntau yog ua los ntawm quartz xuab zeb, thiab nws yog yaj nrog sodium hydroxide lossis sodium carbonate ntawm qhov kub kub hauv qhov cub. Piv nrog ntuj silicon dioxide, silicon dioxide muaj siab purity ntawm silicon dioxide. Zoo inertia. UV tiv taus. Lub refractive index ntawm amorphous silica yog 1.46, uas yog ze rau lub refractive index ntawm ntau epoxy resins nyob rau hauv lub txheej kev lag luam. Yog li, amorphous silica tuaj yeem siv los ua cov hmoov matting ntawm cov txheej txheem thiab muaj cov khoom siv kho qhov muag zoo heev.