A compound capable of low-temperature laser engraving of various colors and its preparation method

Abstract

The invention relates to a composite capable of engraving various colors with low-temperature radium and a preparation method thereof, comprising the following components in parts by weight: 100 parts of polymer, 0.1-1 part of heat-conducting auxiliary agent, and 1-3 parts of heat-sensitive auxiliary agent parts, 0.1 to 1 parts of color developer, and 0.1 to 2 parts of organic toner. The preparation method includes: mixing the raw materials in proportion, melting, extruding and granulating, and then forming plastic products through melt extrusion or injection molding, and then performing laser engraving on the surface of the plastic product through laser pulses, and controlling the radium engraving on the surface of the plastic through laser energy. Temperatures are marked in multiple colors. The invention adds heat-sensitive auxiliary agent and color developer so that the material can be engraved with various colors under low-temperature radium under laser pulse, has special effect and simple process, can be used for product appearance decoration, and has good market application prospect.

Description

technical field [0001] The invention belongs to the technical field of plastic modification, and in particular relates to a composite capable of engraving various colors with low-temperature radium and a preparation method thereof. Background technique [0002] In the existing technology, laser marking on the surface of plastic products can only be done in white or black or black and white, but laser engraving color marking is more difficult. At present, the color laser engraving technology on the plastic surface is mainly based on physical bonding and toner decomposition. Physical bonding is to melt and bond the colored thin layer on the plastic surface by laser to achieve color marking, but the marking is not firm and the color is not good. Uniform; the toner decomposition method is to heat and decompose the toner additive by laser, and the color after decomposition is different from the color of the material to achieve color marking. However, due to the high temperature, ...

AI Technical Summary

Problems solved by technology

This composition can realize white mark and one color mark on black surface at the same time, but cannot realize two or more than two kinds of color marks at the same time

When this composition is used for laser color marking, due to the high temperature during laser marking, the resin product will warp and deform to a certain extent when heated, and at the same time, the surface of the marked resin product will have carbon residue deposition or yellowing to varying degrees. Affects color clarity

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