Hydrophobic silicon dioxide is specially treated silicon dioxide. It is mainly prepared by reacting general hydrophilic silicon dioxide with silane coupling agent and other treatment agents under appropriate conditions according to the different characteristics of various industries to obtain a solid powder silicon dioxide with polysiloxane grafting on its surface. Its hydrophobic contact angle can reach 70 to 150. It not only has good hydrophobicity, but also has defoaming, thickening It has good leveling property, anti sedimentation and other functions, and can be used in textile dyeing and finishing, defoamer, lubricating oil, unsaturated polyester resin, powder fire extinguishing agent, silicone rubber and other products. Specification application GW-100, GW-150 defoamer, liquid silicone rubber and other industries PG-800 defoamer, textile dyeing and finishing, grease and other industries SW-350-H, SW-350-D defoamer, grease and other industries Other industries with special treatment of battery partition, polishing materials, powder fire extinguishing agent, etc (After burning)%>=98>=98>=98>=98>=98DBPOil absorption value cm3/g2.4-2.53.0-3.32.9-3.23.2-4.22.0-3.5pH value6-86-86-86-85-8Heating loss%
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