Strip-shaped aluminum pigment with smooth surface and few flow marks

Abstract

The invention discloses a strip-shaped aluminum pigment with a smooth surface and few flow marks. The pigment is prepared from, by weight, 70-75 parts of sheet aluminum powder, 14-15 parts of methacryloxy propyl trimethoxyl silane, an appropriate amount of absolute ethyl alcohol, 28-30 parts of trimethylolpropane triacrylate, 1.1-1.2 parts of crylic acid, 0.09-0.1 part of azodiisobutyronitrile, 1.75-1.9 parts of polyvinylpyrrolidone, 4-4.5 parts of ethylene bistearic amide, 19-20 parts of polyethylene, 2-3 parts of hydrotalcite, 2-3 parts of polytetrafluoroethylene particles, 2-3 parts of organobentonite, 0.8-1 part of silicone oil, an appropriate amount of deionized water and 0.8-1 part of polyvinyl alcohol. The prepared product has the smooth surface and has no flow mark, the defect that flow marks are produced in the plastic part molding process is reduced, the plastic part performance is improved, industrial control over the whole technological process is convenient, the pigment is safe, and no solvent is adopted.

Description

technical field [0001] The invention relates to the technical field of pigments, in particular to a strip-shaped aluminum pigment with smooth surface and few flow marks. Background technique [0002] Aluminum pigment, also known as aluminum silver paste, aluminum silver powder, and flake aluminum powder, has a smooth and extremely thin scaly structure and is one of the most widely used metal effect pigments. Aluminum pigments have good anti-corrosion properties, can also reflect visible light, and have a silver-white metallic luster. At the same time, the intensity of reflected light changes with different angles, so aluminum pigments have a good decorative effect; aluminum pigments can also reflect Infrared and ultraviolet light, thus also has thermal insulation properties and delays the aging of coatings and rubber and plastics. With the increasing attention of the country and society, the topic of low-carbon and environmental protection is no longer a concept, but has be...

AI Technical Summary

Problems solved by technology

[0003] In the patent "A Strip Aluminum Pigment and Its Preparation Method", ordinary aluminum pigments are washed and filtered, and then extruded with polymers and additives to obtain strips of aluminum pigments. The prepared aluminum pigments are used in plastic Easy to disperse in medium, no dust, good versatility, can greatly reduce flow marks during plastic molding, and solve the problem of poor dispersion of aluminum pigments in resins, but the resin, aluminum pigments and additives are melted at high temperature and then twin-screw or single-screw Screw extrusion, due to the high temperature during extrusion or injection molding, the aluminum pigment is easy to change color or oxidize at high temperature, so that the metal color on the surface of the workpiece becomes dark. This requires modification to improve the thermal stability of the aluminum powder and reduce the aluminum pigment. Corrosive