江苏徐州保温冒口*珠 发热冒口 耐高温*珠价格

 
     4、电绝缘性优异，不导电：选去磁珠后的*珠，是性能优异的绝缘材料，不导电。一般绝缘体的电阻均随温度的升高而降低，*珠则相反，随温度的升高电阻*。这一优点是其他绝缘材料都不具备的。所以，它可以制作是性能优异的高温条件下的绝缘材料制品。
 
     5、粒度细，比表面积大：*珠自然形成的粒度为1-250微米。比表面积300-360g/cm2，和水泥差不多。因此，*珠不需粉磨，可直接使用。细度可满足各种制品的需要，其他轻质保温材料一般粒度都很大(如珍珠岩等)，如果粉磨就会大幅度增加容量，使隔热性大大降低。
 
【*珠的物理性能】
 
项  目
测试指标

     8、玻璃钢制品：各种玻璃钢制品、人造大理石、玻璃钢船舶、工艺品等。
 
     9、封装材料：变压器灌封料、电子封装材料等。
 
Drift beads characteristics
1, high refractoriness, the main chemical com*iti* for silicon drift beads, aluminum oxide, silica (SiO2) about 50-65%, 3 oxidation 2 aluminium (Al2O3) about 25-35%.Because the melting poi*f silica (SiO2) is as high as 1725 degrees Celsius, 3 oxidation 2 aluminium (Al2O3), the melting poi*f 2050 degrees Celsius, are all high refractory material.Therefore, drift beads h*e high refractoriness, generally 1600-1600 degrees Celsiu*ake its excellent high performance refractories.
2, light, heat preservation and heat insulation: drift beads thin wall hollow, empty c*ity for half*acuum, only trace amounts of the gas (N2 and H2 and CO2, etc.), heat transfer is very slow.So drift beads not only light (250-450 kg/m3 density), excellent heat preservation and heat insulation and thermal conductivity at room temperature (0.08-0.1), which play a promine*ole in the field of lightweight thermal insulation material for its laid a solid foundation.
3, high hardness, high strength: because of drift beads*ilicon aluminum oxide mineral phases (quartz and mullite) formation of hard vitreous, hardness of Morse 6-7, hydrostati颜 色
浅灰白色
比电阻（Ω.CM）