EFFICIENT AND COST-EFFECTIVE METHOD FOR PREPARING ULTRA-FINE POWDERED NATURAL RUBBER MASTERBATCH WITH HIGH GRAPHENE CONTENT AND USE THEREOF
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United States of America Patent
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Oct 12, 2023
app pub date -
Jun 1, 2023
filing date -
Mar 27, 2023
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Abstract
A method for preparing a graphene-containing ultra-fine powdered natural rubber masterbatch, including: mixing a diluted graphene oxide dispersion with an anionic surfactant to obtain a modified graphene oxide dispersion; mixing the modified graphene oxide dispersion with a natural rubber latex suspension to obtain a mixed emulsion; and subjecting the mixed emulsion to spray drying to obtain the ultra-fine powdered natural rubber masterbatch with a particle size of less than 5 μm. This application further provides a method for preparing a graphene-modified natural rubber nanocomposite, including: mixing the ultra-fine powdered natural rubber masterbatch with natural rubber block, and carbon black.
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