3results about How to "Improve interface affinity" patented technology

The application provides a copper sulfide gold-bearing ore flotation method based on interface selective oxidation and copper ion synergistic effect, and relates to the field of mineral flotation. The method comprises the following steps: carrying out first mixing and first reaction on the pulp of copper sulfide gold-bearing ore treated by an organic sulfur inhibitor and a mild oxidation medium to obtain oxidized pulp; carrying out second mixing and second reaction on the oxidized pulp and a copper ion regulating component to obtain copper ion regulated pulp; and carrying out third mixing and flotation on the copper ion regulated pulp, a collector and a foaming agent to obtain gold-containing concentrate. The method does not aim to improve the overall floatability of copper sulfide minerals, realizes efficient recovery of gold existing in copper sulfide minerals under the premise of not damaging the original copper-molybdenum separation system selectivity, and is suitable for various copper sulfide gold-bearing ore systems.

The invention relates to the technical field of materials, and discloses a modified plastic composite master batch and a production process thereof.The modified plastic composite master batch is prepared from ethylene propylene diene monomer and chlorinated polyethylene as main raw materials and modified additives as additives through mixing and extrusion granulation processes. Wherein the modified additive is prepared by modifying the surface of pyrophyllite with a macromolecular modifier, and due to the existence of the macromolecular modifier, the interface affinity of the pyrophyllite and the ethylene propylene diene monomer can be improved, so that the pyrophyllite can give full play to the reinforcing effect of the pyrophyllite as an inorganic additive, and the mechanical strength of the plastic is improved. Besides, the macromolecular modifier can promote rapid formation of an expanded carbon layer structure on the surface of the material during combustion to effectively prevent heat and oxygen, and meanwhile, pyrophyllite can form a layer of stable and high-temperature-resistant ceramic barrier during combustion to cooperate with a carbon layer, so that the flame retardant property of the material is greatly enhanced.

The invention provides a silicon carbide whisker and application thereof. The silicon carbide whisker comprises a single-crystal fibrous main body and a silicon dioxide oxide layer covering the surface of the single-crystal fibrous main body, a block body is arranged at one end of the single crystal fibrous main body; the block body contains SiO2 (silicon dioxide) and SiC (silicon carbide). According to the silicon carbide whisker provided by the invention, through the arrangement of the silicon dioxide oxide layer, the interfacial affinity of the silicon carbide whisker and the oxide is improved, stress transfer is promoted, and a toughening mechanism is activated, so that the fracture toughness of a composite material is improved; meanwhile, the silicon dioxide oxide layer also protects the whiskers from oxidation or chemical erosion, and the enhancement effect is maintained. The block body is arranged at one end of the single-crystal fibrous main body, and the block body enhances the interface bonding force through a mechanical interlocking effect, so that the whisker pulling-out work is remarkably improved, the crack propagation resistance is optimized, and the toughness of the composite material is improved.