A kind of preparation method of pigment functional masterbatch and its product and application

Abstract

The invention provides a preparation method of pigment functional masterbatch. In the method, aluminum pigment, pearlescent pigment, pentaerythritol stearate, nano silicate, etc. are mixed evenly in a mixer at a low speed, so that the nano silicate can The effect pigment plays the role of encapsulation, and then the mixture is mixed with polyethylene again at a low speed, and finally the mixture is melted and blended in an extruder, extruded and granulated. In the present invention, the pigment functional masterbatch is applied to the modification of new materials with spray-free aesthetics, and finally applied to appearance parts such as home appliances and small household appliances, so as to solve the problem of flow marks and some joint lines in the industry, and reduce the application bottleneck of new spray-free aesthetic materials.

Description

technical field [0001] The invention relates to the field of micron-level aluminum pigments and pearlescent pigments with high performance, multi-functional coating treatment, compatibility, dispersibility and other modification technologies, and specifically relates to functional masterbatches of spray-free high-dispersion and no-flow mark effect pigments The preparation method and its products and applications. Background technique [0002] Aluminum pigment, also known as aluminum silver paste, aluminum silver powder, flake aluminum powder, has a smooth and extremely thin scale structure, and is one of the most widely used metal effect pigments. The structure of the aluminum pigment is scale-like, and its aspect ratio (ratio of diameter to thickness) is between 40 and 200. The flaky aluminum pigment is dispersed into the paint, and as the solvent volatilizes, the aluminum pigment spreads on the surface of the substrate like fallen leaves. Many aluminum particles are conne...

AI Technical Summary

Problems solved by technology

[0004] However, at present, aluminum pigments are mainly used in spraying products in the plastic industry, which has a large environmental pollution problem. With the emphasis on environmental protection in recent years, spray-free materials that can replace spraying products have been favored by home appliances, automobiles, toys, etc. End customers in the field continue to favor, while the corresponding material manufacturers are scrambling to carry out the research and application development of spray-free materials, such as: various pearlescent, illusion effects, imitation metal effects, apple white effects, etc.

However, due to the problem of "weld lines and flow marks" on the sample surface of the spray-free material during the injection molding process, at present, the corresponding complete machine manufacturers mostly use methods such as spraying, varnishing, and electroplating on the surface of the sample to achieve pearlescent, Effects such as metal baking paint, it is difficult to implement spray-free technology, such as: insufficient gloss, weak appearance texture, poor coloring strength of materials, etc. The fatal disadvantage is that the surface of the material is prone to appearance problems of "flow marks and joint lines" , can not meet the requirements of many customers, which seriously affects the use and popularization of spray-free materials

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