Color change aid used for preparing white or light-colored marks and preparation method thereof

A technology of changing auxiliary agent and auxiliary agent, applied in the field of color changing auxiliary agent and its preparation, can solve the problems of inability to realize white or light-colored marking of polymers of different colors, limited application, etc., and achieves easy operation, low energy consumption, and preparation Simple and efficient process

Active Publication Date: 2019-11-05
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the color-changing additives in the prior art can only mark black polymers in light colors, and cannot realize white or light-color marks on polymers of different colors, which greatly limits its application.

Method used

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  • Color change aid used for preparing white or light-colored marks and preparation method thereof
  • Color change aid used for preparing white or light-colored marks and preparation method thereof
  • Color change aid used for preparing white or light-colored marks and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Laser absorber: silver powder, particle size (D 50 ) is 0.4 μm;

[0052] Thermoplastic polymers: polyoxymethylene (POM), Shenhua MC90, a polyoxymethylene copolymer;

[0053] Carrier polymer: ethylene-octene copolymer (POE), DuPont 8200;

[0054] Put 80 parts by weight of polyoxymethylene, 10 parts by weight of silver powder and 10 parts by weight of ethylene-octene copolymer in a high-speed mixer and mix them uniformly; then add the above-mentioned mixture to a twin-screw extruder for blending and extrusion, and granulate. That is, the laser color-changing additive of the present invention is obtained. The temperature during the blending and extrusion process is controlled at 180°C to 230°C;

[0055] Next, the obtained laser color-changing auxiliary agent is added to polypropylene resin particles at 2wt%, and 0.1wt% of pigment red 254 (organic red) is added at the same time, and then blended by a twin-screw extruder, granulated, and extruded The temperature is 170°C...

Embodiment 2

[0057] Laser absorber: silver powder, particle size (D 50 ) is 0.4 μm;

[0058] Thermoplastic polymers: polyoxymethylene (POM), Shenhua MC90, a polyoxymethylene copolymer;

[0059] Carrier polymer 1: ethylene-octene copolymer (POE), DuPont 8200;

[0060] Carrier polymer 2: Ethylene-methyl acrylate-glycidyl methacrylate copolymer, DuPont PTW.

[0061] 80 parts by weight of polyoxymethylene, 10 parts by weight of silver powder, 7 parts by weight of ethylene-octene copolymer, and 3 parts by weight of ethylene-methyl acrylate-glycidyl methacrylate copolymer are placed in a high-speed mixer and mixed uniformly; The above-mentioned mixed materials are added to a twin-screw extruder for blending and extruding, and granulated to obtain the laser color-changing additive of the present invention. The temperature during the blending and extrusion process is controlled at 180°C to 230°C;

[0062] Next, the obtained laser color-changing auxiliary agent is added to polypropylene resin p...

Embodiment 3

[0064] Laser absorber: silver powder, particle size (D 50 ) is 0.4μm; titanium dioxide, particle size (D 50 ) is 0.6 μm;

[0065] Thermoplastic polymers: polyoxymethylene (POM), Shenhua MC90, a polyoxymethylene copolymer;

[0066] Carrier polymer 1: ethylene-octene copolymer (POE), DuPont 8200;

[0067] Carrier polymer 2: Ethylene-methyl acrylate-glycidyl methacrylate copolymer, DuPont PTW.

[0068] 80 parts by weight of polyoxymethylene, 8 parts by weight of silver powder, 2 parts by weight of titanium dioxide, 7 parts by weight of ethylene-octene copolymer, and 3 parts by weight of ethylene-methyl acrylate-glycidyl methacrylate copolymer are placed in a high-speed mixer Mix evenly; then add the above-mentioned mixture into a twin-screw extruder for blending and extrusion, and granulate to obtain the laser color change additive of the present invention. The temperature during the blending and extrusion process is controlled at 180°C to 230°C;

[0069] Next, the obtained ...

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Abstract

The invention discloses a color change aid. The color change aid is prepared from, by weight, 0.05-10.00 parts of a laser absorbent, 20.00-80.00 parts of a thermoplastic polymer and 10.00-79.95 partsof a carrier polymer, wherein the thermoplastic polymer is polyacrylate resin, polyoxymethylene resin, styrene-acrylonitrile resin, acrylate-styrene resin or ABS resin. The invention further disclosesthe use of the color change aid for performing marking on colored polymers. Experiments show that after a certain amount of the color change aid is added into the polymers of different colors, the light-colored to white marks can be efficiently marked on the polymers of different colors; the preparation method of the disclosed color change aid is simple, easy to operate, safe, environmentally friendly, low in energy consumption, and very suitable for large-scale production in industries, and has good economic benefits.

Description

technical field [0001] The invention belongs to the field of polymer material additives, in particular to a color-changing additive used to mark white or light-colored patterns and characters on colored polymers and a preparation method thereof. Background technique [0002] Laser marking is a method of irradiating materials with high-energy lasers, resulting in carbonization, discoloration, vaporization, foaming, etc. on the surface of materials and leaving permanent marks. Compared with traditional methods, such as ink printing, screen printing, embossing, hot stamping, etc., laser marking has the advantages of high precision, no contact, high efficiency, low cost and clean and pollution-free, so it is gradually becoming a popular marking method Way. [0003] In order to achieve laser marking, laser color-changing additives are usually added to the material to be marked. However, the current laser marking method can only generate white or light-colored marks on the surfa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L59/04C08L23/08C08K3/08C08K3/22C08L23/12C08L23/06C08L25/12C08L55/02
CPCC08L59/04C08L23/12C08L23/06C08L55/02C08K2003/0806C08K2003/2241C08L2205/03C08L2205/035C08L23/08C08K3/08C08K3/22C08L23/0815C08L23/0884C08L25/12
Inventor 周涛冯金
Owner SICHUAN UNIV
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