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Photochromic material and preparation method and applications thereof

A photochromic material and photochromic technology, applied in the field of photochromic materials and their preparation, can solve the problems of slow photochromic activation rate, loss of the ability to display reversible color transformation, aging, etc.

Active Publication Date: 2019-04-19
WENZHOU FUQISHI PHOTOELECTRIC MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the main obstacle to the large-scale commercial application of photochromic materials is that, on the one hand, the photochromic activation rate in the solid polymer matrix is ​​slow and fades; Under light (UV), they lose the ability to display reversible color changes, and the aging is serious; on the other hand, photochromic materials are prone to delamination

Method used

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  • Photochromic material and preparation method and applications thereof
  • Photochromic material and preparation method and applications thereof
  • Photochromic material and preparation method and applications thereof

Examples

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preparation example Construction

[0070] In a preferred embodiment, the preparation method of the hydroxyl-terminated hyperbranched polyester modified cellulose triacetate at least comprises the following steps:

[0071] In a 500mL round-bottomed flask, add 300mL of dimethylacetamide solvent, add 5g of hydroxyl-terminated hyperbranched polyester, stir and dissolve, then add 100g of cellulose triacetate, heat up to 130°C, and react for 5 hours. The obtained product is filtered and dried to obtain hydroxyl-terminated hyperbranched polyester-modified triacetate cellulose.

[0072] The hydroxyl-terminated hyperbranched polyester used in this application is commercially available and purchased from Wuhan Hyperbranched Resin Technology Co., Ltd.

[0073] adhesive

[0074] In this application, as long as the adhesive can play a bonding role, there is no special design.

[0075] The first adhesive layer and the second adhesive layer can be the same or different, and can be independently selected from (meth)acrylat...

Embodiment 1

[0096] The present embodiment 1 provides a kind of photochromic material, comprises in order from top to bottom:

[0097] (a) upper substrate;

[0098] (b) a first adhesive layer;

[0099] (c) TAC color changing film;

[0100] (d) a second adhesive layer;

[0101] (e) Lower substrate.

[0102] The upper substrate is cellulose triacetate;

[0103] The first adhesive layer is an acrylic adhesive.

[0104] The raw materials for the preparation of the acrylic adhesive, in parts by weight, at least include:

[0105]

[0106] The preparation method of described acrylate prepolymer at least comprises the following steps:

[0107] Add 1kg of epoxy acrylate, 0.5kg of methyl methacrylate, 0.2kg of N,N-dimethylaminoethyl methacrylate and 10L of solvent N,N-dimethylformamide to the reactor After stirring and dissolving, the temperature was raised to 100° C., and then 0.01 kg of initiator dibenzoyl peroxide was added to the system, and the reaction was stirred for 1 hour to obt...

Embodiment 2

[0122] This embodiment 2 provides a kind of photochromic material, comprises in order from top to bottom:

[0123] (a) upper substrate;

[0124] (b) a first adhesive layer;

[0125] (c) TAC color changing film;

[0126] (d) a second adhesive layer;

[0127] (e) Lower substrate.

[0128] The upper substrate is cellulose triacetate;

[0129] The first adhesive layer is an acrylic adhesive.

[0130] The raw materials for the preparation of the acrylic adhesive, in parts by weight, at least include:

[0131]

[0132] The preparation method of described acrylate prepolymer at least comprises the following steps:

[0133] Add 1kg of epoxy acrylate, 0.5kg of methyl methacrylate, 0.2kg of N,N-dimethylaminoethyl methacrylate and 10L of solvent N,N-dimethylformamide to the reactor After stirring and dissolving, the temperature was raised to 100° C., and then 0.01 kg of initiator dibenzoyl peroxide was added to the system, and the reaction was stirred for 1 hour to obtain an ...

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Abstract

The invention relates to the technical field of optical elements, and more specifically relates to a photochromic material and a preparation method and applications thereof. The photochromic materialcomprises following components from top to bottom: (a) an upper basic material; (b) a first adhesive layer; (c) a TAC photochromic film; (d) a second adhesive layer; and (e) a lower basic material. The preparation method comprises at least following steps: providing an upper basic material, a lower basic material, and a TAC photochromic film; using a first adhesive layer to at least partially cover the lower surface of the upper basic material and the upper surface of the TAC photochromic film at the same time so as to laminate the upper basic material and the TAC photochromic film; and usinga second adhesive layer to at least partially cover the lower surface of the TAC photochromic film and the upper surface of the lower basic material at the same time so as to laminate the lower basicmaterial and the TAC photochromic film.

Description

technical field [0001] The present invention relates to the technical field of optical elements, more specifically, the present invention relates to a photochromic material and its preparation method and application. Background technique [0002] Photochromism is a phenomenon consisting of a reversible change in the color of a photochromic compound, or an article containing the compound, upon exposure to light irradiation containing ultraviolet light, and a transition back to the original color when the ultraviolet irradiation ceases. Light irradiation sources containing ultraviolet rays include, for example, sunlight and light from a mercury lamp. Stopping UV radiation can be accomplished, for example, by placing the photochromic compound or article in a dark place or by removing the source of UV radiation (eg, by filtering). [0003] In the prior art, the main obstacle to the large-scale commercial application of photochromic materials is that, on the one hand, the photoc...

Claims

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Application Information

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IPC IPC(8): B32B23/04B32B23/08B32B23/14B32B23/20B32B27/30B32B27/32B32B27/36B32B7/12B32B37/12G02C7/10
CPCB32B7/12B32B23/04B32B23/08B32B23/14B32B23/20B32B27/302B32B27/308B32B27/32B32B27/36B32B27/365B32B37/1284B32B2551/00G02C7/102
Inventor 黄肃明
Owner WENZHOU FUQISHI PHOTOELECTRIC MATERIAL CO LTD