1.性能特点：硅灰石具有针状、纤维状晶体形态及较高的白度和独特的物理化学性能，可取代或部分取代玻璃纤维作为聚合物复合材料的增强体，提高材料性能，降低生产成本，起增重和增强补强作用。
Characteristics: the wollastonite has acicular, fibrous crystal form and high whiteness, unique physical and chemical properties, and can replace or partly replace glass fiber as the reinforced polymer composite material, which can improve the material performance, reduce production cost, gain weight and enhance reinforcing effect.
2.应用领域：广泛应用于复合材料（电子元件、封装材料、高性能橡胶制品。汽车壳体、模具）、陶瓷、油漆、涂料、塑料、橡胶、化工、造纸、电焊条、冶金保护渣以及作为石棉代用品等领域。
Application fields: widely used in composite material (electronic components, packaging materials, high performance rubber products. Motor shell, mold), ceramics, paint, coatings, plastics, rubber, chemical industry, paper making, welding electrode as asbestos substitute, metallurgical powder and etc.
3.系数指标
测定项目 | 325M | 400M | 800M | 1250M | 2000M | 2500M | 3000M |
SiO2 二氧化硅%≥ | 49 | 49 | 49.8 | 49.8 | 49.8 | 49.8 | 49.8 |
CaO 氧化钙%≥ | 47 | 47 | 47.2 | 47.2 | 47.2 | 47.2 | 47.2 |
Fe2O3 三氧化二铁%≤ | 0.20 | 0.20 | 0.20 | 0.20 | 0.20 | 0.20 | 0.20 |
MgO 氧化镁%≤ | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 |
PH Value PH值 | 7-9 | 7-9 | 7-9 | 7-9 | 7-9 | 7-9 | 7-9 |
Whiteness 白度%≥ | 90 | 90 | 92 | 92 | 92 | 92 | 92 |
True Specific Gravity 真比重（t/m3) | 2.8 | 2.8 | 2.8 | 2.8 | 2.8 | 2.8 | 2.8 |
Postulate Specific Gravity 假比重（t/m3) | 0.6-1.4 | 0.6-1.4 | 0.6-1.4 | 0.6-1.4 | 0.6-1.4 | 0.6-1.4 | 0.6-1.4 |
Moh's Hardness 莫氏硬度 | 4.5-5.5 | 4.5-5.5 | 4.5-5.5 | 4.5-5.5 | 4.5-5.5 | 4.5-5.5 | 4.5-5.5 |
Refraction Coefficient 折光系数 | 1.63 | 1.63 | 1.63 | 1.63 | 1.63 | 1.63 | 1.63 |
Melting Point 熔点℃ | 1540 | 1540 | 1540 | 1540 | 1540 | 1540 | 1540 |
Density 密度 | 2.75 | 2.75 | 2.75 | 2.75 | 2.75 | 2.75 | 2.75 |
Coefficient of Thermal Expansion 热膨胀系数 | 6.5*10-6 | 6.5*10-6 | 6.5*10-6 | 6.5*10-6 | 6.5*10-6 | 6.5*10-6 | 6.5*10-6 |
Particle Size 粒径93(μm)≤ | 20 | 16 | 10 | 7 | 5 | ||
Appearance 外观 | 白色粉末 | 白色粉末 | 白色粉末 | 白色粉末 | 白色粉末 |
注：可以按照客户的需求生产不同白度、纯度、细度的硅灰石粉。
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