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Color-variable additive composition, preparation method and application of color-variable additive composition

A technology of a composition and a color-changing aid, which is applied to the color-changing aid composition and the fields of its preparation and application, can solve the problems of limited chromatic aberration contrast, generation of flow marks or streaks, difficulty in forming color difference, etc., and achieves high chromatic aberration contrast, Improve chromatic aberration contrast, consistent marking effect

Active Publication Date: 2015-05-06
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the ability of most polymer matrix materials to absorb energy is insufficient, and it is difficult to form high-contrast chromatic aberration
Usually, in order to improve the color difference contrast of the polymer matrix material, it is often necessary to select a suitable component as an additive (also known as an additive) of the matrix material and to change the physical state of the additive, for example: the world patent WO2009 / 003976 uses a laser absorber , thermoplastic polymers, compatibilizers, carrier polymers and other components are used as laser marking additives, and its laser absorbers are selected from at least two different metal oxides and metal hydroxides to form a higher color difference Contrast, and the color difference contrast will be lower when using a laser absorber alone (WO2004 / 050766); the United States Engelhard company has developed a tin oxide and Sb for Nd: YAG laser 2 o 3 A laser absorber composed of calcined powder, but adding tin oxide or Sb alone 2 o 3 Can not get a good marking effect (see: Feng Chi, Wu Wenjing, Li Siyuan, Zhang Yong. Research progress of laser marking plastics. China Plastics, September 2011, Volume 25, Issue 9.); World Patent WO2011 / 050934 It is also necessary to use Bi 2 o 3 Two kinds of laser absorbers are compatible with bismuth citrate
In addition, choosing metal particles alone as a laser absorber will easily produce flow marks or streaks during marking, resulting in unclear color contrast, and it is also easy to degrade the polymer and foam, which will seriously affect the marking effect
[0005] In the prior art, it is difficult to form a high-contrast chromatic aberration by using a laser absorber alone. Even the patented product of the world patent WO2009 / 003976 - Iriotec 8208 of Merck (Merck) uses antimony trioxide and antimony tin oxide Two kinds of laser absorbers increase the technical difficulty of component compatibility selection, as well as the cost of raw materials and manufacturing costs, and the contrast of color difference formed by them is still limited

Method used

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  • Color-variable additive composition, preparation method and application of color-variable additive composition

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Experimental program
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Effect test

Embodiment 1

[0062] Metal powder (core): Ag, particle size (D 50 ) is 0.5 μm;

[0063] Thermoplastic polymer of the first shell: PA MDX6 (polyamide MDX6), Mitsubishi Engineering 1022H;

[0064] Compatibilizer for the second shell: ethylene-butyl acrylate-maleic anhydride copolymer, Akema, Lotader 3210;

[0065] Accelerator: dipentaerythritol phosphate (Guangzhou Ruidao Chemical Co., Ltd.)

[0066] Carrier polymer: high-density polyethylene, melt index 0.5g / 10min (190°C);

[0067] Mix 39.9 parts of PA MDX6, 60 parts of Ag powder, and 0.1 part of dipentaerythritol phosphate (parts by weight), and then use a twin-screw extruder to blend into a homogeneous mixture. The blending temperature is 240 ° C to 260 ° C;

[0068] Next, take 40.0 parts of the above mixture, 10.0 parts of ethylene-butyl acrylate-maleic anhydride copolymer, and 50.0 parts of high-density polyethylene (parts by weight) and continue mixing with a twin-screw extruder at a temperature of 180°C to 200°C; The core-shell str...

Embodiment 2

[0072] Metal powder (core): Zn, particle size (D 50 ) is 55 μm;

[0073] Thermoplastic polymer of the first shell: PC (polycarbonate), SABIC 241R

[0074] Compatibilizer for the second shell: ethylene-methyl acrylate-methacrylate glycidyl ether copolymer, Akema, Lotader AX8900;

[0075] Accelerator: zinc methyl ethyl phosphinate (Guangzhou Ruidao Chemical Co., Ltd.)

[0076] Carrier polymer: POE (ethylene-octene copolymer), Dupont 8150;

[0077] Mix 10.0 parts of PC, 85.0 parts of Zn powder, and 5.0 parts of zinc methyl ethyl phosphinate (parts by weight), and then use a twin-screw extruder to blend into a uniform mixture. The blending temperature is 250 ° C to 270 ° C;

[0078] Next, take 5.0 parts of the above mixture, 0.2 parts of ethylene-methyl acrylate-glycidyl methacrylate copolymer, and 94.8 parts of POE (parts by weight) and continue mixing with a twin-screw extruder at a temperature of 190°C to 220°C; The core-shell structure is formed in situ in the carrier POE,...

Embodiment 3

[0082] Metal powder (core): Al, particle size (D 50 ) is 15 μm;

[0083] Thermoplastic polymer for first shell: PPS (polyphenylene sulfide), Phillips R-7-02

[0084] Compatibilizer for the second shell: polypropylene grafted with glycidyl methacrylate, grafting rate 0.5wt%, melt index 11g / 10min (230°C);

[0085] Accelerator: aluminum diethylphosphinate (Guangzhou Ruidao Chemical Co., Ltd.)

[0086] Carrier polymer: iPP (isotactic polypropylene), Sinopec T30S

[0087] Mix 28.0 parts of PPS (-SH group exists at the end of the PPS molecular chain), 70.0 parts of Al powder, and 2.0 parts of aluminum diethylphosphinate (parts by weight), and then use a twin-screw extruder to blend into a homogeneous mixture. The blending temperature is 290°C to 320°C;

[0088]Next, take 25.0 parts of the above mixture, 3.0 parts of polypropylene grafted glycidyl methacrylate, and 72.0 parts of iPP (parts by weight) to continue mixing with a twin-screw extruder at a temperature of 250°C to 270°C...

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Abstract

The invention discloses a color-variable additive composition. The color-variable additive composition comprises the following components in parts by weight: 5.0-40.0 parts of a mixture, 0.2-10.0 parts of a compatibilizer and 50.0-94.8 parts of a carrier polymer, wherein the mixture comprises the following components in parts by weight: 60.0-85.0 parts of metal powder and 10.0-39.9 parts of a thermoplastic polymer. According to a novel color-variable additive composition, only one laser photosensitizer can be used for greatly improving the contrast effect of the color difference between a mark and a base material; particularly, dipentaerythritol phosphate and methyl ethyl phosphonic acid zinc are added and used as accelerants, and the contrast effect of the color difference is more obvious; meanwhile, the invention also provides a method for preparing the color-variable additive composition. The method is simple and convenient, easy to operate and high in product quality.

Description

technical field [0001] The invention relates to a color change additive composition, a preparation method and application thereof. Background technique [0002] At present, there are many technologies for marking commodities, such as: screen printing, ink printing, embossing, etc. These marks are likely to cause marks on commodities due to friction, mechanical damage, chemical effects and similar effects during storage and transportation. At the same time, the above-mentioned marks are easy to be altered, which will also bring opportunities for criminals to manufacture fake and inferior products, and it is difficult to realize the permanent marking and anti-counterfeiting functions of the products. [0003] In order to overcome the defects of the above-mentioned marking technology, researchers have developed a new method of marking polymer materials according to the characteristics of the marked object itself. It uses high-energy laser energy to irradiate the material to cau...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08L77/00C08L23/08C08L23/12C08L69/00C08L75/04C08L81/02C08L51/06C08L67/02C08K5/521C08K3/08C08K5/5313
CPCC08L23/06C08L67/02C08L75/04C08L2205/03C08L2205/08C08L2207/062C08L2207/066C08L2310/00C08L77/00C08L23/08C08K2003/0806C08K5/521C08L23/0807C08L69/00C08K2003/0893C08K5/5313C08L23/12C08L81/02C08L51/06C08K2003/0812
Inventor 周涛胡友亮张集海文亮
Owner SICHUAN UNIV
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