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A kind of photochromic PVC heat-shrinkable label film and preparation method thereof

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

Active Publication Date: 2020-04-28
YIXING GUANGHUI PACKAGE
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  • Summary
  • 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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  • A kind of photochromic PVC heat-shrinkable label film and preparation method thereof
  • A kind of photochromic PVC heat-shrinkable label film and preparation method thereof
  • A kind of photochromic PVC heat-shrinkable label film and preparation method thereof

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Experimental program
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Embodiment Construction

[0032] Firstly, the microcapsule material of the reverse photochromic color is prepared. The present invention adopts the preparation method of acrylate latex interpenetrating network polymer to make spiropyran, cholesteryl ester and butyl acrylate graft as the core, polyethyl acrylate as the inner shell, and polymethyl methacrylate as the core The three-layer microcapsule material of the shell. The photochromic material can be grafted with butyl acrylate to increase its stability, overcome the shortcomings of spiropyran compounds that are easily oxidized and have poor fatigue resistance, and make the distribution of cholesteryl ester liquid crystal layered molecules more balanced. As the inner shell, polyethyl acrylate takes advantage of its own characteristics of large elastic deformation, which can effectively protect the photochromic molecules inside the core, and avoid external stress caused by shearing during processing, which will cause impact and damage. influences. T...

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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] In order to make the PVC heat shrinkable label film have the function of photochromic, it is necessary to introduce a reversible photochromic material into the formulation system, and ensure that the material can perform its color changing function normally during the use of the film. [0003] Photochromism means that a compound (A) can undergo a specific chemical reaction under the irradiation of a certain wavelength of light to obtain a product (B). The change in the structure leads to a significant change in its absorption spectrum (colorization occurs). ). Under the irradiation of another wavelength of light or heat, it can return to its original form. Substances that can produce this photochromic phenomenon are called photochromic materials. [0004...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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