产品名称NAME：Silica Powder(石英砂)
产品描述PRODUCTION DESCRIPTION：
Silica powder or Quartz, is also purified from siliCarenite or sand stone. It is widely used as an inorganic friction raw material filler. Silica powder improves the friction products’ wear resistance, as well as the friction coefficient. Silica is a high Mohs scale of hardness filler, it need to be grinded into very small particles, usually up to 200-400 mesh or even higher. Otherwise its hardness will scratch the mating plates and generate great brake noise.
颗粒度GRANULARITY（筛网分析 SIEVE ANALYSIS，颗粒大小PARTICLE SIZE）
目数Mesh： 400#
D97(μm) ≤38μm
D50(μm) 17-20μm
外观 APPEARANCE
形状Shape： Powder
颜色Color： White
主要技术参数MAIN SPECIFICATION
比重Specific Gravity(g/cm3) 2.65-2.70
含水量 Moisture Rate(%w.t.) ≤0.05%
莫氏硬度 Hardness(Mohs) 7.0-7.5
PH 6.5-7.0
白度Whiteness(90-100) ≥92
烧失量Loss of Ignition(LOI, %) ≤0.2
化学成分 CHEMICAL COMPOSITION
| 组成Composition | SiO2 | Fe2O3 | AL2O3 | CaO | Cr2O3 | TiO2 | MgO |
| 比例Rate（%wt） | ≥98 | 0.01-0.05 | 0.1-0.2 | 0.01-0.03 | ≤0.0005 | ≤0.02 | ≤0.017 |
包装跟存贮PACKAGE AND STORAGE
1. 25KG/bag, double sheet paper bags with plastic bag.
2. Opened bags must be carefully resealed and kept upright to prevent leakage. Stored in original packages in a dry, cool and well ventilated areas to prevent from direct sunlight.
3. Use appropriate to avoid environment contamination.