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Photochromic PVC thermal contraction label film and preparation method thereof

A technology of photochromic and thermal shrinkage, which is applied in the direction of color-changing fluorescent materials, chemical instruments and methods, etc., can solve the problems of effect influence and ineffective protection of photochromic materials

Active Publication Date: 2018-06-22
YIXING GUANGHUI PACKAGE
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the photochromic material in the system cannot be effectively protected, it will inevitably have a certain impact on its function

Method used

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  • Photochromic PVC thermal contraction label film and preparation method thereof
  • Photochromic PVC thermal contraction label film and preparation method thereof
  • Photochromic PVC thermal contraction label film and preparation method thereof

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Embodiment Construction

[0032] First, the reverse photochromic microcapsule material is prepared. The present invention adopts the preparation method of acrylate latex interpenetrating network polymer, and is made with spiropyran, cholesteryl ester and butyl acrylate graft as core, polyethyl acrylate as inner shell, polymethyl methacrylate as Three layers of microcapsule material for the shell. By grafting with butyl acrylate, the photochromic material can increase its stability, overcome the shortcomings of spiropyran compounds that are easily oxidized and have poor fatigue resistance, and make the distribution of cholesteryl liquid crystal layer molecules more balanced. As the inner shell, poly(ethyl acrylate) can protect the photochromic molecules inside the core by using its own characteristics of large elastic deformation, avoiding the impact and damage caused by external stress caused by shearing during processing. influences. The outermost layer of polymethyl methacrylate has good rigidity a...

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Abstract

The invention discloses a photochromic PVC thermal contraction label film and a preparation method thereof. The method comprises the following steps: preparing a three-layer microcapsule material taking spiropyrane, cholesterol ester and butyl acrylate graft as a core, polyethylene acrylate as a inner shell and polymethyl methacrylate as a shell, then adding the microcapsule material into PVC resin material and additives, performing mixing and blow molding, and finally obtaining the thermal contraction label film. In addition, as the solubility parameters of polymethyl methacrylate and PVC aresimilar to each other, and polymethyl methacrylate and PVC have good compatibility, photochromic materials can be uniformly dispersed into a PVC system, and effect can be properly realized.

Description

technical field [0001] The invention relates to the technical field of PVC heat-shrinkable film labels, in particular to a photochromic PVC heat-shrinkable label film and a preparation method thereof. Background technique [0002] To make the PVC heat shrinkable label film have the photochromic function, it is necessary to introduce a reversible photochromic material into the formula system, and ensure that the material can normally exert its color changing function during the use of the film. [0003] Photochromic phenomenon means that a compound (A) can undergo a specific chemical reaction under the irradiation of light of a certain wavelength to obtain a product (B). Due to the change of structure, its absorption spectrum changes significantly (colorization occurs). ). Under the irradiation of light of another wavelength or under the action of heat, it can return to its original form. Substances that can produce this photochromic phenomenon are called photochromic mater...

Claims

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Application Information

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IPC IPC(8): C08L27/06C08L33/08C08J5/18C08F220/14C08F220/18C09K9/02
CPCC08F220/18C08F220/1804C08J5/18C08J2327/06C08J2433/08C09K9/02C09K2211/1416C09K2211/145C08F220/14
Inventor 杨涛杨铄冰殷宇晨陈亚龙
Owner YIXING GUANGHUI PACKAGE
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