Photochromic polyurethane composite material

A composite material and polyurethane technology, applied in the field of polymer polyurethane composite materials, can solve the problem of single color of polyurethane, achieve the effect of changing light transmission performance and improving color diversity

Inactive Publication Date: 2019-02-22
RUGAO FUDA ENG & TECH RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a kind of photochromic polyurethane composite material, which not only retains all the advantages of polyurethane, but also can solve the problem of single color of polyurethane in the prior art

Method used

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  • Photochromic polyurethane composite material

Examples

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preparation example Construction

[0025] The preparation method of described polymethyl methacrylate modified photochromic agent, comprises the following steps:

[0026] 1) Adding methyl methacrylate monomer and ethanol into the reactor, after stirring, the methyl methacrylate is completely dissolved in ethanol, adding an organic discoloration agent, continuing to stir and raising the temperature to 60°C-80°C, Then add the initiator BPO ethanol solution, stop heating and keep stirring for 1-2 hours, and gradually cool into a solid;

[0027] 2) Grinding the above solid into powder to obtain a polymethyl methacrylate modified photochromic agent.

[0028] Polymethyl methacrylate modified photochromic agent is a core-shell structure with the photochromic agent as the core covering the shell of polymethyl methacrylate. The shell-core structure can ensure a stable combination with polymer materials , and evenly distributed.

Embodiment 1

[0030] A photochromic polyurethane composite material, which consists of:

[0031]

[0032] In the polymethyl methacrylate modified photochromic agent, the photochromic agent accounts for 0.1% of the total weight of the polymethyl methacrylate modified photochromic agent.

[0033] The organic photochromic agent is a combination of spiropyran and azobenzene, wherein the mass ratio of spiropyran and azobenzene is 1:1.

[0034] The auxiliary agent includes one or more combinations of oxidizing agent, compatibilizer, antiaging agent and light stabilizer.

[0035] The preparation method of described polymethyl methacrylate modified photochromic agent, comprises the following steps:

[0036] 1) Adding methyl methacrylate monomer and ethanol into the reactor, after stirring, the methyl methacrylate is completely dissolved in ethanol, adding an organic discoloration agent, continuing to stir and raising the temperature to 60°C-80°C, Then add the initiator BPO ethanol solution, st...

Embodiment 2

[0040] A photochromic polyurethane composite material, which consists of:

[0041]

[0042] In the polymethyl methacrylate modified photochromic agent, the photochromic agent accounts for 5% of the total weight of the polymethyl methacrylate modified photochromic agent.

[0043] The organic photochromic agent is a combination of spiropyran and azobenzene, wherein the mass ratio of spiropyran and azobenzene is 1:1.

[0044] The auxiliary agent includes one or more combinations of oxidizing agent, compatibilizer, antiaging agent and light stabilizer.

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PUM

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Abstract

The invention relates to a photochromic polyurethane composite material which contains the following components in parts by weight: 85-120 parts of polyurethane, 3-5 parts of polyetherimide, 10-15 parts of a polymethyl methacrylate modified photochromic agent and 1-5 parts of additives, wherein the photochromic agent is an organic photochromic agent. According to the technical scheme, the polymethyl methacrylate modified photochromic agent is added into the polyurethane, and due to coating of the polymethyl methacrylate, distribution uniformity of the photochromic material in the polyurethaneis realized. Moreover, the organic photochromic agent is changed into different colors according to different light rays, and the application range of the polyurethane is widened.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, in particular to a polymer polyurethane composite material in which the color of the composite material changes correspondingly through the change of light. Background technique [0002] Polyurethane is the abbreviation of polyurethane. Its application fields involve light industry, chemical industry, electronics, textile, medical treatment, construction, building materials, automobile, national defense, aerospace and aviation, etc. It is known as the fifth largest plastic. [0003] Although polyurethane has a wide range of applications, the dyeability of polyurethane is poor. In order to improve the color of polyurethane, it is achieved by adding a large amount of pigments to polyurethane, but the compatibility between pigments and polyurethane is poor. Although the use of compatibilizers can improve the pigment Compatibility with polyurethane, but the color is single, which affects th...

Claims

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Application Information

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IPC IPC(8): C08L75/04C08L79/08C08K13/06C08K9/10C08K5/23
CPCC08L75/04C08L2205/03C08L79/08C08K13/06C08K9/10C08K5/23
Inventor 王航王大平
Owner RUGAO FUDA ENG & TECH RES INST CO LTD
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