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Color-changing powder preparation method

A color-changing powder and photochromic dye technology, applied in the direction of color-changing fluorescent materials, chemical instruments and methods, organic dyes, etc., can solve the problems of complex production process of color-changing powder, poor compatibility of subsequent fiber processing, unfriendly environment, etc., to achieve Good discoloration and color development effect, controllable particle size, simple operation

Pending Publication Date: 2019-12-31
SHANGHAI DIFANG TEXTILE TECHCAL FLOCKING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the shortcomings of the existing color-changing powder, such as complicated production process, unfriendly environment, and poor compatibility of subsequent fiber preparation and processing, the present invention provides a preparation method of color-changing powder

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The polyethylene with a viscosity-average molecular weight of 7000 is added with 0.1% photochromic dye, 0.1% ultraviolet absorber, 0.01% antioxidant, and 0.1% sensitizer according to the mass ratio, and is melted and granulated at 150°C after mixing evenly to obtain the polyethylene The ethylene photochromic masterbatch is crushed and sieved at low temperature to obtain a color-changing powder.

Embodiment 2

[0023] Polypropylene with a viscosity-average molecular weight of 10,000 is added with 5% photochromic dye, 5% ultraviolet absorber, 0.3% antioxidant, and 5% sensitizer according to the mass ratio. After mixing evenly, it is melted and granulated at 150°C to obtain a polypropylene Propylene photochromic masterbatch, the masterbatch is crushed and sieved at low temperature to obtain a color-changing powder.

Embodiment 3

[0025] Poly-1-butene with a viscosity-average molecular weight of 15,000, adding 15% photochromic dye, 10% ultraviolet absorber, 0.5% antioxidant, and 15% sensitizer according to the mass ratio, mixed evenly and melted and granulated at 180°C, The poly-1-butene photochromic masterbatch is prepared, and the masterbatch is crushed and sieved at low temperature to obtain a color-changing powder.

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PUM

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Abstract

The invention provides a color-changing powder preparation method, wherein the color-changing powder comprises polyolefin, a photochromic dye, an antioxidant, an ultraviolet absorbent and a sensitizer. The preparation method comprises: uniformly mixing the substances in a melting manner, carrying out low temperature crushing, and screening to obtain the required color-changing powder. According tothe invention, the prepared color-changing powder is suitable for various photochromic dyes, has characteristics of wide applicability, simple preparation method, high operability, good color changing and developing effect, long service life and broad market prospect, and can be used in various fields.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a method for preparing a color-changing powder Background technique [0002] Photochromic substances can display different colors according to changes in the lighting conditions of the external environment, producing unique visual effects, including inorganic and organic, and have good application prospects in security and anti-counterfeiting, clothing fabrics, military camouflage and other fields . Among them, organic photochromic substances are widely used due to their variety and colorful colors. [0003] The color rendering ability of organic photochromic substances is easily affected by external environmental factors. At the same time, active substances such as oxygen in the external environment will also make them lose their color changing ability, thereby affecting the service life of photochromic substances. At present, the more common solution is to use micro...

Claims

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Application Information

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IPC IPC(8): C09K9/02C09B67/42C09B67/08
CPCC09K9/02C09B67/0013C09B67/0097C09B67/0092
Inventor 钟博文
Owner SHANGHAI DIFANG TEXTILE TECHCAL FLOCKING
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