常州耐火发热冒口*珠 40-100目细*珠报价多少钱 灰白色

常州耐火发热冒口*珠 40-100目细*珠报价多少钱 灰白色  15838356978  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, hydrostatic strength up to 70-140 mpa, true density of 2.10 2.20 g/cm3, therefore, drift beads with high strength.General light porous or insulating materials such as boiling rocks, di*ite, perlite, sea pumice, expanded vermiculite is the difference in hardness, strength is poor, with its system of thermal insulation products or light refractory products, intensity difference flaws.The advantages of their shortcomings is drift beads, so drift beads h*e more competitive advantages, used more widely.
4, excellent electrical insulation, non-conductiv
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     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e: choose after degaussing beads drift beads, is the performance of insulation materials, conductive.Insulation resistance are commonly by the rise of temperature, drift beads, on the other hand, increases with the increase of temperature resistance.This advantage is don't h*e other insulating materials.So, it can make is performance under the condition of high temperature insulation products.
5, particle size, specific surface area: drift beads natural formation