Free-spraying ABS composite without flow marks and preparation method thereof

Abstract

The invention relates to the technical field of high polymer materials, in particular to a free-spraying ABS composite without flow marks and a preparation method thereof. The composite comprises, by weight, 30-50 parts of high-fluidity ABS resin, 5-40 parts of high-fluidity PMMA resin, 5.4-29.9 parts of special pigment, 0.9-2.6 parts of treating fluid, 0-25 parts of compatilizer and 0-3 parts of a processing agent. The special pigment is formed by mixing 0.5-2 parts of underpainting pigment and 0.1-0.3 part of pearlescent pigment with organic solvent, and the weight ratio of the total mass of the underpainting pigment and the pearlescent pigment to the organic solvent is 1 to 8-12; the treating fluid is formed by mixing a treating agent with the organic solvent according to the weight proportion of 1:8-12; the organic solvent is at least one of absolute ethyl alcohol, absolute propyl alcohol and absolute glycerin. The ABS composite is high in flowability, high in hardness, and outstanding in pearl effect.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a spray-free and flow-mark-free ABS composite material and a preparation method thereof. Background technique [0002] In the prior art, acrylonitrile-butadiene-styrene terpolymer (ABS) resin is one of the five major synthetic resins, which has excellent impact resistance, heat resistance, low temperature resistance, chemical resistance and electrical properties , also has the characteristics of easy processing, stable product size, and good surface gloss; the abbreviation code of polymethyl methacrylate is PMMA, commonly known as plexiglass, which is the most excellent texture among synthetic transparent materials so far, and the price is more suitable. They are easy to paint and color, and can also undergo secondary processing such as surface metal spraying, electroplating, welding, hot pressing and bonding, and are widely used in industrial fields such as machinery, ...

AI Technical Summary

Problems solved by technology

The spraying process has the following disadvantages: 1. High cost, long production process, low efficiency, low yield rate, large investment in equipment or plant; 2. Non-environmental protection, spraying pollutes the environment, causes damage to the health of the operator, and has a large safety risk; 3. Difficult to recycle , defective products are difficult to recycle

[0004] The patent application document with the patent application number 201110395826.9 discloses a spray-free metal effect ABS modified material formed by mixing and melting ABS resin, metal effect pigments and pearlescent pigments. But first, the pigments have not been pre-treated. The metal effect or pearlescent effect is not obvious, and there is no fluorescence or self-luminous effect; secondly, due to the general fluidity of the general spray-free ABS material, it is easy to leave scratches on the surface during processing, which affects the appearance of the ABS material; The general twin-screw extruder extruding process damages the pearlescent pigment very much, and the ABS material that makes is also poor in pearlescent effect; Finally, because the hardness of the transparent ABS resin of the core material is very low, the spray-free ABS material in the prior art is not suitable. Scratch resistant, tarnishes easily