| abstract |
The present invention relates to a rubber composition comprising 0.1 to 20 parts by weight of an acrylic rubber compound and 0.05 to 5 parts by weight of a viscosity modifier, based on 100 parts by weight of alumina ceramic particles having a particle size of 0.05 μm to 1 μm, wherein the acrylic rubber compound comprises a rubber binder; A water-soluble dispersant composed of a silicone-based acrylate; And an ester-based acrylate, and is mixed with the alumina ceramic particles, the viscosity controlling agent, and an aqueous solution. According to the present invention, by using a viscosity adjusting agent, a wetting agent and a dispersing agent having an appropriate mixing ratio, it is possible to improve the bonding property with a rubber binder, the wettability with a porous separator substrate and the dispersibility between alumina particles, Based water-based coating liquid composition. |