Ultraviolet-proof photochromic polyurethane composite material

A technology of anti-ultraviolet and composite materials, applied in the field of polymer materials, can solve the problems of no anti-ultraviolet and single color

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 anti-ultraviolet photochromic polyurethane composite material, which no

Method used

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  • Ultraviolet-proof photochromic polyurethane composite material
  • Ultraviolet-proof photochromic polyurethane composite material
  • Ultraviolet-proof photochromic polyurethane composite material

Examples

Experimental program
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Effect test

preparation example Construction

[0033] The preparation method of polyethylene terephthalate modified photochromic agent comprises the following steps:

[0034] 1) Add terephthalic acid and ethylene glycol into the reactor, heat the reactor and stir it to carry out esterification reaction, generate esterification product, and cool to solid; the reaction temperature is 180-220°C; the reaction time is 1 -4 hours.

[0035] 2) Grinding the esterification product into powder to obtain the esterification product powder;

[0036] 3) Fully mixing the esterification product powder, the inorganic photochromic agent and the organic photochromic agent, and then performing vacuum polycondensation reaction to prepare the polyethylene terephthalate modified photochromic agent. When the vacuum polycondensation reaction is carried out, the vacuum is kept stable in this application, and the polycondensation conditions of low vacuum in the early stage and high vacuum in the late stage cannot be used in some existing technologi...

Embodiment 1

[0040] A kind of anti-ultraviolet photochromic polyurethane composite material, it is composed of by weight:

[0041]

[0042] The inorganic photochromic agent among them is CaHfO3: La 2 o 3 .

[0043] In the polyethylene terephthalate modified photochromic agent, the photochromic agent accounts for 0.1% of the total weight of the polyethylene terephthalate modified photochromic agent.

[0044] The organic photochromic agent is a combination of spiropyran and azobenzene, wherein the mass ratio of spiropyran and azobenzene is 1:1.

[0045] The auxiliary agent includes one or more combinations of oxidizing agent, compatibilizer, antiaging agent and light stabilizer.

[0046]The preparation method of polyethylene terephthalate modified photochromic agent comprises the following steps:

[0047] 1) Add terephthalic acid and ethylene glycol to the reactor, the reaction temperature is 180°C; the reaction time is 1 hour, the reactor is heated and stirred to carry out the esteri...

Embodiment 2

[0052] A kind of anti-ultraviolet photochromic polyurethane composite material, it is composed of by weight:

[0053]

[0054] The inorganic photochromic agent among them is CaHfO3: La 2 o 3 .

[0055] In the polyethylene terephthalate modified photochromic agent, the photochromic agent accounts for 5% of the total weight of the polyethylene terephthalate modified photochromic agent.

[0056] The organic photochromic agent is a combination of spiropyran and azobenzene, wherein the mass ratio of spiropyran and azobenzene is 1:1.

[0057] The auxiliary agent includes one or more combinations of oxidizing agent, compatibilizer, antiaging agent and light stabilizer.

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Abstract

The invention relates to an ultraviolet-proof photochromic polyurethane composite material which comprises the following components in parts by weight: 85-120 parts of polyurethane, 3-5 parts of polyetherimide, 10-15 parts of a polyethylene glycol terephthalate modified photochromic agent and 1-5 parts of additives, wherein the photochromic agent comprises an inorganic photochromic agent and an organic photochromic agent. According to the technical scheme, the polyethylene glycol terephthalate modified photochromic agent is added into the polyurethane, and due to coating of the polyethylene glycol terephthalate, the distribution uniformity of the photochromic material in polyurethane is 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, and in particular refers to a polymer polyurethane composite material which changes the color of the composite material correspondingly and prevents ultraviolet rays 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...

Claims

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Application Information

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IPC IPC(8): C08L75/04C08L79/08C08K13/06C08K9/10C08K3/24C08K5/23
CPCC08L75/04C08L2201/08C08L79/08C08K13/06C08K9/10C08K3/24C08K5/23
Inventor 王航王大平
Owner RUGAO FUDA ENG & TECH RES INST CO LTD
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