Photochromic polyurethane composite with ultraviolet-resistant function

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 of polyurethane

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 photochromic polyurethane composite material with anti-ultraviolet function, which not onl

Method used

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  • Photochromic polyurethane composite with ultraviolet-resistant function
  • Photochromic polyurethane composite with ultraviolet-resistant function
  • Photochromic polyurethane composite with ultraviolet-resistant function

Examples

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preparation example Construction

[0031] The preparation method of described polymethyl methacrylate modified photochromic agent, comprises the following steps:

[0032] 1) Add methyl methacrylate monomer and ethanol in the reactor, make described methyl methacrylate completely dissolve in ethanol after stirring, add inorganic photochromic agent and organic photochromic agent, continue stirring and Raise 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;

[0033] 2) Grinding the above solid into powder to obtain a polymethyl methacrylate modified photochromic agent.

[0034] 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

[0036] A photochromic polyurethane composite material, which consists of:

[0037]

[0038] The inorganic photochromic agent among them is CaHfO3: La 2 o 3 .

[0039] 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.

[0040] The organic photochromic agent is a combination of spiropyran and azobenzene, wherein the mass ratio of spiropyran and azobenzene is 1:1.

[0041] The auxiliary agent includes one or more combinations of oxidizing agent, compatibilizer, antiaging agent and light stabilizer.

[0042] The preparation method of described polymethyl methacrylate modified photochromic agent, comprises the following steps:

[0043] 1) Add methyl methacrylate monomer and ethanol in the reactor, make described methyl methacrylate dissolve in ethanol completely after stirring, add inorganic photochromic agent and organic photochromic agent, cont...

Embodiment 2

[0047] A photochromic polyurethane composite material, which consists of:

[0048]

[0049] The inorganic photochromic agent among them is CaHfO3: La 2 o 3 .

[0050] In the polymethyl methacrylate modified photochromic agent, the photochromic agent accounts for 5% of the total weight of the polymethyl methacrylate modified photochromic agent.

[0051] The organic photochromic agent is a combination of spiropyran and azobenzene, wherein the mass ratio of spiropyran and azobenzene is 1:1.

[0052] 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 a photochromic polyurethane composite with an ultraviolet-resistant function. The photochromic polyurethane composite comprises the components in parts by weight: 85-120 partsof polyurethane, 3-5 parts of polyetherimide, 10-15 parts of polymethyl methacrylate modified photochromic agent and 1-5 parts of auxiliaries; and the photochromic agent comprises an inorganic photochromic agent and an organic photochromic agent. In the technical scheme, the polymethyl methacrylate modified photochromic agent is added into polyurethane, the distribution uniformity of a photochromic material in polyurethane is realized due to the coating of polymethyl methacrylate, in addition, the organic photochromic agent is changed into different colors according to different rays, so thatthe use range of 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 through the change of light and has the function of preventing ultraviolet rays. 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 ...

Claims

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Application Information

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IPC IPC(8): C09K9/00C08L75/04C08L79/08C08K9/10C08K3/22
CPCC08L75/04C09K9/00C08L79/08C08K9/10C08K3/22
Inventor 王航王大平
Owner RUGAO FUDA ENG & TECH RES INST CO LTD
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