硅灰石 Wollastonite
硅灰石化学式CaSiO3，是一种稀有矿物资源，是独特的纤维状结果的无机粉体材料，具有良好的物理和化学性质。硅灰石有很高的白度，有极高的耐热性和介电性，有很低的吸水率和吸油率，有较好的耐碱性和良好的助熔性，有低生物耐受性、*无嗅等特点，是一种理想的白色补强功能性材料。
Wollastonite (CaSiO3) is a rare mineral resource of unique acicular structure with goodphysical and chemical properties. The main features of wollastonite are high brightness, high heat resistance and dielectric properties, low moisture and oil absorption rate good alkali resistance, non-hazardous and so on. It’s very good reinforcement filler.
基本性能 Typical Properties 参数 Typical Value
外观 Appearance 白色 White
形态 Morphology 针状 Acicular
分子量 Molecular Weight 116
比重 Specific Gravity 2.9
折射率 Refractive Index 1.63
PH值 PH (10％ Slurry) 9.9
水溶性 Water Solubility (g/100cc) 0.0095
莫氏硬度 MOHS Hardness 4.5
膨胀系数 Coefficient of Expansion 6.5 x 10 -6 mm/(mm.℃)
熔点 Melting Point 1540℃
导热系数 Transmissivity 0.1 w/m.k
硅灰石矿纤（XWA系列） Wollastonite Mineral Fiber （XWA Series）
硅灰石是*一的成针状纤维结构的白色
填充料，其长径比可达到20:1，广泛的应用在各种
塑料制品中，可以提高制品的电绝缘性、冲击强度、抗拉强度，改善制品的线性拉伸和模收缩率，可以部分或完全取代传统玻纤，起到明显的增强补强作用。
Wollastonite is the only a pure white filling material with acicular fiber structure, the aspect ratio can up to 20:1, it was widely used in plastics, It can improve the electric insulation, impact strength and tensile strength of products, and it can improve the linear stretching and die shrinkage of products. It can replace the traditional glass fiber partially or completely to offer strengthening significantly.
硅灰石矿纤化学指标 Chemical Composition of Wollastonite Mineral Fiber
成分Component SiO2 CaO MgO Al2O3 Fe2O3 LOI
含量
Content (％) 49-51 41-43 ≤3 ≤1 ≤0.2 ≤4
硅灰石矿纤物理指标 Physical Properties of Wollastonite Mineral Fiber
规格Specification 纤维直径
Fiber Diameter 白度
Brightness 长径比
Aspect Ratio 松装密度
Loose Bulk Density
XWA6 ≤6μm 86％±2％ 8:1-10:1 ≤0.40g/cm3
XWA9 ≤9μm 86％±2％ 8:1-10:1 ≤0.45g/cm3
XWA11 ≤11μm 86％±2％ 8:1-10:1 ≤0.45g/cm3
XWA13 ≤13μm 86％±2％ 8:1-10:1 ≤0.50g/cm3
XWA19 ≤19μm 86％±2％ 10:1-12:1 ≤0.55g/cm3
XWA24 ≤24μm 86％±2％ 10:1-12:1 ≤0.60g/cm3
XWA28 ≤28μm 86％±2％ 10:1-12:1 ≤0.60g/cm3
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