Method for fabrication of a hybrid dual phase filler for elastomers
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United States of America Patent
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Mar 26, 2019
Grant Date -
Aug 3, 2017
app pub date -
Jul 6, 2016
filing date -
Jan 28, 2016
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Abstract
The method for fabricating a hybrid dual phase filler for elastomers includes: impregnation of carbon black with ethanol suspension of magnetite in a ball mill; drying of the dual phase mixture till constant weight; grinding of the dried product in a ball mill; thermal activation under vacuum in a specifically designed reactor followed by a grinding of the final product in a ball mill. The hybrid dual phase filler includes carbon black impregnated with ethanol suspension of magnetite, contains 5 to 50 mass % of magnetite and 95 to 50 mass % of carbon black. Magnetite is a powder and includes up to 5% of SiO2, particle size up to 50μ and density of 4.8-5.2 g/cm3 with a specific surface area (BET/) 400-900 m2/g; iodine number—370-750 mg/g; oil number 200-450 ml/100 g; total volume pore 0.5-1.5 cm3(STP)/g; micropore surface area 50-90 m2/g; external specific surface area 400-900 m2/g.
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