Oleophilic modificatioon method for tiny inorganic Nano powder

Abstract

This invention relates to a method for lipophilic modification of inorganic micro / nanopowder. The method comprises: (1) uniformly depositing a layer of inorganic oxide (zirconium oxide, magnesium oxide, aluminum oxide, silicon oxide, titanium oxide, zinc oxide or ferric oxide, 2-5 wt. % of the micro / nanopowder) or its hydrate onto the surface of the micro / nanopowder; (2) coating the composite micro / nanopowder with an organic compound (anionic surfactant, silane coupler, phthalate coupler or aluminum coupler, 3-7 wt. % of the composite micro / nanopowder). The micro / nanopowder is calcium carbonate, barium carbonate, magnesium carbonate, barium sulfate or lead sulfate, or their mixture. The sizes of the micro / nanopowder are in the range of 1-50000 nm. The obtained lipophilic micro / nanopowder can be used to manufacture paints, rubbers and plastics with improved properties.

Description

technical field

[0001] The invention relates to a method for lipophilic modification of inorganic micro-nano powder, which belongs to the technical field of modification treatment of inorganic powder particles. Background technique

[0002] In recent years, inorganic mineral micro-nano fillers have been widely used in polymer fields such as plastics and rubber. Studies have shown that the application of inorganic micro-nano powders, such as micro-nano barium sulfate and calcium carbonate, in coatings can not only improve Coating adhesion, impact resistance and other mechanical properties, but also improve the coating's radiation resistance and other functions. Applying it to high molecular polymers such as plastics and rubber can not only improve their mechanical functions such as strength and toughness, but also reduce the manufacturing cost of polymers.

[0003] Because the compatibility between inorganic micro-nano powder and high molecular polymer and organic medium det...