Structural color elastomer based on polyacrylic acid as well as preparation method and application thereof

A technology of polyacrylic acid and methacrylic acid, applied in the direction of coating, etc., can solve the problems of yellowish color, affect the color of structural color elastomer, limit the application, etc., achieve the effect of enhancing color saturation, reducing cracks, and broad application prospects

Active Publication Date: 2021-04-09
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The researchers combined spherical nanoparticles with supramolecular polyacrylic acid elastomers to prepare polyacrylic acid supramolecular structural color elastomers with high mechanical strength (WUJ, NIU W, ZHANG S, et al.A flexible and robust dual-network supramolecular elastic film with solvent resistance and brilliant structural colors[J].NewJournal of Chemistry,2019,43(29):11517-23.), but this kind of supramolecular elastomer needs to use alkaline substances to adjust the pH, resulting in the yellowish color of the prepared supramolecular polyacrylic acid elastomer, which seriously affects the color of the structural color elastomer and greatly limits its application.

Method used

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  • Structural color elastomer based on polyacrylic acid as well as preparation method and application thereof
  • Structural color elastomer based on polyacrylic acid as well as preparation method and application thereof
  • Structural color elastomer based on polyacrylic acid as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] A kind of structural color elastomer based on polyacrylic acid, its preparation method comprises the following steps:

[0055] 1) Mix and disperse 4.8g of polyacrylic acid with a weight average molecular weight of 3000g / mol, 2g of hydroxyethyl acrylate, 3g of hydroxyethyl methacrylate, 1g of methacrylic acid, 13g of water and 8g of ethanol, and then add 0.2 g polyethylene glycol diacrylate with a number average molecular weight of 600g / mol, 0.01g of diallyl disulfide and 0.18g of 2-hydroxy-2-methylphenylpropan-1-one, under dark conditions Stir magnetically for 1 hour to obtain the precursor liquid, then take 2 mL of the precursor liquid and inject it into a square polytetrafluoroethylene mold with a specification of 2.5 cm × 2.5 cm × 0.5 cm, and irradiate it with a UV lamp with a wavelength of 365 nm and a power of 10 W for 1.5 h under the protection of nitrogen, and then Put it into a blast drying oven and dry it at 60°C for 12 hours to obtain a polyacrylic acid elasto...

Embodiment 2

[0060] A kind of structural color elastomer based on polyacrylic acid, its preparation method comprises the following steps:

[0061] 1) The polyacrylic acid of 4.8g weight-average molecular weight 3000g / mol, the hydroxyethyl acrylate of 2.5g, the hydroxyethyl methacrylate of 2.5g, the methacrylic acid of 1g, the water of 13g and the ethanol of 8g are mixed and dispersed, and then Add 0.2 g of polyethylene glycol diacrylate with a number average molecular weight of 600 g / mol, 0.01 g of diallyl disulfide, and 0.18 g of 2-hydroxy-2-methylphenylpropan-1-one, avoid light Under the condition of magnetic stirring for 1 hour, the precursor liquid was obtained, and then 2 mL of the precursor liquid was injected into a square polytetrafluoroethylene mold with a specification of 2.5 cm × 2.5 cm × 0.5 cm, and irradiated with a UV lamp with a wavelength of 365 nm and a power of 10 W for 1.5 h under the protection of nitrogen. , and then placed in a blast drying oven for 12 hours at 60°C t...

Embodiment 3

[0066] A kind of structural color elastomer based on polyacrylic acid, its preparation method comprises the following steps:

[0067] 1) Mix and disperse 4.8g of polyacrylic acid with a weight average molecular weight of 3000g / mol, 3g of hydroxyethyl acrylate, 2g of hydroxyethyl methacrylate, 1g of methacrylic acid, 13g of water and 8g of ethanol, and then add 0.2 g polyethylene glycol diacrylate with a number average molecular weight of 600g / mol, 0.01g of diallyl disulfide and 0.18g of 2-hydroxy-2-methylphenylpropan-1-one, under dark conditions Stir magnetically for 1 hour to obtain the precursor liquid, then take 2 mL of the precursor liquid and inject it into a square polytetrafluoroethylene mold with a specification of 2.5 cm × 2.5 cm × 0.5 cm, and irradiate it with a UV lamp with a wavelength of 365 nm and a power of 10 W for 1.5 h under the protection of nitrogen, and then Put it into a blast drying oven and dry it at 60°C for 12 hours to obtain a polyacrylic acid elasto...

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Abstract

The invention discloses a structural color elastomer based on polyacrylic acid as well as a preparation method and application of the structural color elastomer. The structural color elastomer based on polyacrylic acid is formed by sequentially stacking a polyacrylic acid elastomer layer, a photonic crystal layer and a polyacrylic acid elastomer layer. The structural color elastomer based on polyacrylic acid has bright structural color and no angle dependence on color, presents improved flexibility, self-restorability and mechanical strength under the condition of maintaining the optical characteristics of the original photonic crystal, also has certain solvent resistance, can be used for preparing wire and cable protective sleeves, table mats, furniture decorative materials, toys, solid marks and the like, and has wide application prospects.

Description

technical field [0001] The invention relates to the technical field of photonic crystal materials, in particular to a structural color elastomer based on polyacrylic acid and its preparation method and application. Background technique [0002] Structural color elastic materials are materials with a photonic crystal structure formed by periodic arrangement of media with different refractive indices, which can display different structural colors by adjusting the photonic band gap. Therefore, they can be used in wearable flexible devices, Medical equipment, cosmetic prosthesis and other fields. [0003] Most of the research at this stage is mainly focused on the inverse opal structure of spherical particles. The preparation process is as follows: firstly use spherical nanoparticles (such as polystyrene microspheres, silica microspheres, etc.) to self-assemble to obtain photonic crystal templates, and then The elastomer precursor liquid penetrates into the gap of the photonic ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J7/04C08L51/00C08F265/02C08F220/20C08F220/06
CPCC08F265/02C08J7/042C08J2351/00C08J2425/14C08J2451/00C08F220/20C08F220/06
Inventor 沈慧芳杨壮刚
Owner SOUTH CHINA UNIV OF TECH
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