Preparation method of laser marking lubricant for ABS (acrylonitrile butadiene styrene) engineering plastics

Abstract

The invention discloses a preparation method of a laser marking lubricant for ABS (acrylonitrile butadiene styrene) engineering plastics, and belongs to the technical field of a laser marking additive. According to the method, firstly, a Dopamine solution is used for soaking a modified laser absorbent; after filtering and drying are performed, the modified laser absorbent and a treating agent are mixed and react at high temperature, and are then dissolved in ethanediamine to prepare a laser absorbent ethanediamine solution; next, in a nitrogen protection state, heating is performed, so that stearic acid is melted and is then proportionally mixed with the laser absorbent ethanediamine solution for performing dehydration reaction; moisture in the system is taken out by nitrogen gas flow; finally, through extrusion pelletization, the laser marking lubricant for the ABS engineering plastics is obtained. The compatibility of the laser marking lubricant for the ABS engineering plastics with a plastic base body is good; the laser marking lubricant can be stably dispersed in the plastics; the mechanical strength of the product can be effectively improved; in the laser marking process, the formed marks are clear; the contrast is obvious; wide application prospects are realized.

Description

technical field [0001] The invention discloses a preparation method of a laser marking lubricant for ABS engineering plastics, and belongs to the technical field of laser marking additives. Background technique [0002] Laser marking is a new marking method. This method uses laser radiation to generate local high energy inside the polymer matrix. The energy is absorbed by the polymer matrix or additives and converted into heat energy. When the heat energy reaches a certain value, it will trigger Various physical or chemical changes inside the polymer cause carbonization, foaming, discoloration reactions, etc., resulting in a marking effect. At present, laser marking is mainly used for permanent marking, product anti-counterfeiting, tracking of important parts, etc. The effect of laser marking is related to the type of laser used and the nature of the plastic substrate. There are differences in the markability of different plastic substrates. Since most polymers have poor a...

AI Technical Summary

Problems solved by technology

[0006] The technical problem mainly solved by the present invention is: in the process of adding the laser marking lubricant for traditional ABS engineering plastics to the color masterbatch of ABS engineering plastics, it is difficult for the inorganic additives that play a marking role in the laser marking lubricant to be well stable in engineering plastics Dispersion, resulting in poor mechanical properties of ABS engineering plastics, and poor laser marking effect, provides a preparation method for laser marking lubricants for ABS engineering plastics