High-transparent ultraviolet separation ceramic-imitating flexible nanometer composite membrane material and preparation method thereof

A nano-composite and transparent violet technology, which is applied in the field of high-transparency UV-blocking imitation ceramic flexible nano-composite film materials and its preparation, can solve the problems of reduced transparency and optical uniformity, insufficient flexibility, and energy instability. The effect of optical uniformity, simple process and simple preparation method

Active Publication Date: 2012-12-12

BEIJING UNIV OF CHEM TECH

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AI-Extracted Technical Summary

Problems solved by technology

Nanoparticles as functional fillers are in an unstable state due to their unique activity and large surface energy, and are prone to agglomeration during the preparation of polymer organic-inorganic nanocomposites (especially when the content of nanoparticles is high). It destroys the ultra-fineness and dispersion uniformity of nanoparticles, leading to a decrease in the tr...

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Abstract

The invention discloses a high-transparent ultraviolet separation ceramic-imitating flexible nanometer composite membrane material and a preparation method thereof and belongs to the field of nanometer composite materials. The composite membrane material comprises 20-85 wt% of core-shell nanometer particles and 15-80 wt% of polymer macromolecules. The composite membrane material is prepared through in situ polymerization which includes two steps of phase transfer of nanometer particles and bulk polymerization of the nanometer grains in polymer monomer. The nanometer grains are transferred to the polymer monomer from initial dispersoid through a method of solution phase transfer, and then the high-transparent ultraviolet separation ceramic-imitating flexible nanometer composite membrane material is prepared through thermal initiation polymerization or ultraviolet light initiation polymerization. The nanometer composite membrane material is high in transparency, has good thermal stability, strong ultraviolet shielding capacity and certain flexibility, can be used for manufacturing transparent optical devices, uvioresistant devices, special light control devices and the like.

Technology Topic

Bulk polymerizationIn situ polymerization +10

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Examples

Experimental program(7)

Example Embodiment

[0041] Example 1

[0042] Take ZnO nanoparticle ethanol dispersion (initial dispersion, solvent A is ethanol), add a large amount of isopropyl ether (solvent B) dropwise to obtain white ZnO precipitate, centrifuge, and then wash the precipitate three times and place it in a vacuum drying oven to dry. Obtain ZnO nano powder. Take 1.0g of ZnO nanopowder and disperse it into 1.7g of butyl methacrylate under the action of magnetic stirring and ultrasonic to realize the phase transfer of ZnO nanoparticle. Add 0.2wt% AIBN of the total mass of the dispersion, stir well and degas, pour the liquid into the mold, polymerize in an oven at 78°C for 6 hours, then polymerize at 65°C for 16 hours, and finally at 95°C and 115°C respectively After heat treatment for 1 hour and 1 hour, the transparent flexible nano composite film material is obtained after demolding. The film thickness is 4.0 mm, and the optical performance test results are shown in Table 1.

[0043] Visible light transmittance (%) (550nm)

[0044] Table 1

Example Embodiment

[0045] Example 2

[0046] Take 1.0 g of ZnO nanopowder obtained in Example 1 and disperse it into 1.7 g of butyl methacrylate under the action of magnetic stirring and ultrasound to realize the phase transfer of ZnO nanoparticles. Add 0.5wt% AIBN of the total mass of the dispersion, stir evenly and degas, pour the liquid into the mold, polymerize in an oven at 78°C for 6 hours, then at 65°C for 16 hours, and finally at 95°C and 115°C respectively After heat treatment for 1 hour, the transparent flexible nano composite film material is obtained after demolding. The film thickness is 4.0 mm, and the optical performance test results are shown in Table 2.

[0047] Visible light transmittance (%) (550nm)

[0048] Table 2

Example Embodiment

[0049] Example 3

[0050] Take 1.0 g of the ZnO nanopowder obtained in Example 1 and disperse it into 1.7 g of 3-methacryloxypropyltrimethoxysilane under the action of magnetic stirring and ultrasound to realize the phase transfer of the ZnO nanoparticles. Add 0.5wt% AIBN of the total mass of the dispersion, stir evenly and degas, pour the liquid into the mold, polymerize in an oven at 78°C for 6 hours, then at 65°C for 16 hours, and finally at 95°C and 115°C respectively After heat treatment for 1 hour, the transparent flexible nano composite film material is obtained after demolding. The film thickness is 0.070mm, and the optical performance test results are shown in Table 3. The transmittance spectrum curve of nanocomposite membrane material at 200~800nm is shown image 3.

[0051] Visible light transmittance (%) (550nm)

[0052] table 3

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PUM

Property	Measurement	Unit
Thickness	4.0	mm
Thickness	0.07	mm
Thickness	0.023	mm
tensile		MPa
Particle size		Pa
strength	10

Description & Claims & Application Information

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High-transparent ultraviolet separation ceramic-imitating flexible nanometer composite membrane material and preparation method thereof

AI-Extracted Technical Summary

Problems solved by technology

Abstract

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Examples

Example Embodiment

Example Embodiment

Example Embodiment

PUM

Description & Claims & Application Information

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