TM-FA Series a-Alumina for Epoxy Casting

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TM-FA Series a-Alumina for Epoxy Casting
Posting date : Dec 28, 2013
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28-
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Features: This product is a special filling for SF6 high voltage composite apparatus and other insulation pieces applied in high voltage switches produced by epoxy casting. The granularity has reasonable distribution, small specific surface area, high filling amount and superior casting performance. The isolating, electromechanical and high voltage breakdown resistant properties can reach the performance index of the same product NM-1 in Japan. Main Technical Parameters of TM-FA Series a-Alumina for Epoxy Casting: Type Index TM-FA1 TM-FA2 AL2O3>= (%) 99.7 99.7 Na2O<=(%) 0.02 0.02 SiO2<=(%) 0.06 0.06 Fe2O3<=(%) 0.03 0.03 True Density>= (g/cm3) 3.97 3.97 Median Size (um) 12.0 18.0 Specific Surface Area (m2/g) 0.4-0.5 0.4-0.5 Electrical Conductivity<=(us/cm) 40 40 Oil Absorption Rate<=% 0.01 0.01 PH value 7.5-8.5 7.5-8.5 Initial Viscosity (cp) <=2500 <=2000 Working Time(min) 60~90 60~90 Packing Quantity(Phr) 350 350

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