High-purity silica micropowder is widely used in electronic packaging, semiconductor materials, high-end ceramics, and other fields. Nws cov kev ua kom muaj kev ua kom ncaj qha cuam tshuam rau kev ua tau zoo ntawm cov khoom kawg. Yog li ntawd, txheeb xyuas qhov tseeb ntawm silica micropowder yog qhov tseem ceeb heev. Cov hauv qab no yog ntau txoj hauv kev siv.
1. Tshuaj Txhuam Kev Ntsuam Xyuas
Thawj hom kev sib xyaw ntawm high - purity silica micrope dioxide (sitio₂), feem ntau yuav tsum muaj kev coj dawb huv ntawm 99.9% lossis siab dua. Xy - Tshav pluorescence spectroscopy (xrf) yog siv cov ntsiab lus ntawm cov hlau (FE) (AL), thiab calcium (ca). Ntau dua cov txiaj ntsig zoo tshaj plaws hauv tsawg dua cov impurities, tshwj xeeb tshaj yog cov ntsiab lus hlau ion uas yuav tsum tau tswj hwm nruj.
2. Paus taus loj thiab tshuaj ntsuam xyuas morphology
Siab - purity silica micropowder nthuav qhia cov khoom siv tsis sib xws. Nws cov particle morphology feem ntau pom siv lub laser collets loj analyzer lossis scanning Electron tsom (suar). Siab {{3} Zoo si Silica Micropowder yog cov sib zog ua ntu zus lossis ze li ntawm ib sab thiab tsis muaj agglomerates. Tsis muaj kev pom cov khoom txawv txawv tuaj yeem pom cov neeg txawv teb chaws tuaj yeem cuam tshuam rau kev ua tiav daim ntawv thov.
3. Whiteness thiab kho qhov muag
High - purity silica hmoov feem ntau muaj qhov zoo dawb, uas tuaj yeem ntsuas siv cov met whiteness. {- purity silica hmoov yog ntshiab dawb dawb, dawb ntawm pom grey lossis hues. Tsis tas li ntawd, nws cov ntawv sau ua tshiab yog ze rau ntawm lub suab ntshiab (kwv yees li 1.46), ua kom pom kev tsom xam pib.
4. Thermal tsom xam
Thermogravetric tsom (tga) lossis kev ntsuas calorimetry (DSC) yog siv los kuaj qhov ruaj ntseg ntawm cov hmoov silica ntawm cov dej siab. Siab - purity silica hmoov yuav tsum tau qhia tsis muaj qhov tseem ceeb loj poob lossis decomposition poob lossis decomposition ntawm qhov kub (piv txwv li 1000 degree). Txawm li cas los xij, Silica hmoov uas muaj cov teeb meem organic lossis impurities yuav ua rau kev hloov pauv txawv txawv thaum cua sov.
5. Ntshiab Dej Solubility Kev Kuaj
Ntxiv ib qho me me ntawm silica hmoov rau dej ntshiab thiab saib nws cov kev sib cais. {- purity silica hmoov yog siv insoluble zoo hauv dej. Yog tias pom cov turridity lossis sedimentation tshwm sim, nws yuav muaj cov impurities uas tsis tau ua tiav. Hauv cov ntsiab lus, qhov cim ntawm qhov siab- Kev Ntsuas Tshuaj, kom paub meej tias nws ua tau raws li qhov yuav tsum tau ua ke ntawm qhov siab-}} daim ntawv thov.
