High-contamination-resistant special aluminum pigment for plastic

Abstract

The invention discloses high-contamination-resistant special aluminum pigment for plastic. The pigment is prepared from, by weight, 70-75 parts of leafing aluminum powder, 14-15 parts of methacryloxypropyltrimethoxysilane, appropriate amount of absolute ethyl alcohol, 28-30 parts of trimethylolpropane triacrylate, 1.1-1.2 parts of acrylic acid, 0.09-0.1 part of azodiisobutyronitrile, 1.75-1.9 parts of polyvinylpyrrolidone, 3.5-4.5 parts of oleamide, 18-20 parts of polypropylene, 2-3 parts of precipitated white carbon black, 0.8-1 part of sodium hexametaPhosphate, 1.5-2 parts of polydimethylsiloxane, 2-3 parts of titanium dioxide and 1-1.3 parts of terpilenol. The appropriate amount of white carbon black is added for substitution of part of titanium dioxide and modified prior to addition into modification additives, raw material cost is reduced, and contamination resistance and washability of products can be improved. In addition, the aluminum pigment is excellent in oxidation resistance and contamination resistance.

Description

technical field [0001] The invention relates to the technical field of pigments, in particular to a special aluminum pigment for plastics with excellent stain resistance. 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 b...

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