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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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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI 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 transparency and optical uniformity of the material, which seriously affects the performance and application of composite materials
At the same time, when the content of nanoparticles is high, the mechanical and mechanical properties of the composite material become poor, generally become more brittle, and the flexibility is not enough, which cannot meet the needs of actual use.

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Get the ZnO nanoparticle ethanol dispersion (initial dispersion, solvent A is ethanol), drop a large amount of isopropyl ether (solvent B), obtain white ZnO precipitate, centrifuge, then place the vacuum drying oven to dry the precipitate after washing three times, Obtain ZnO nanopowder. 1.0 g of ZnO nanopowder was dispersed into 1.7 g of butyl methacrylate under the action of magnetic stirring and ultrasonic waves to realize phase transfer of ZnO nanoparticles. Add 0.2wt% AIBN of the total mass of the dispersion, stir evenly and defoam, 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 Under heat treatment for 1 hour and 1 hour, a transparent and flexible nanocomposite film material is obtained after demoulding. The thickness of the film is 4.0 mm, and the optical performance test results are shown in Table 1.

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

[0044]...

Embodiment 2

[0046] 1.0 g of ZnO nanopowder obtained in Example 1 was dispersed into 1.7 g of butyl methacrylate under the action of magnetic stirring and ultrasonic waves to realize phase transfer of ZnO nanoparticles. Add 0.5wt% AIBN of the total mass of the dispersion, stir evenly and defoam, 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 After heat treatment for 1 hour, a transparent and flexible nanocomposite film material is obtained after demoulding. The thickness of the film is 4.0 mm, and the test results of its optical properties are shown in Table 2.

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

[0048] Table 2

Embodiment 3

[0050] 1.0 g of ZnO nanopowder obtained in Example 1 was dispersed into 1.7 g of 3-methacryloxypropyltrimethoxysilane under the action of magnetic stirring and ultrasonic waves to realize phase transfer of ZnO nanoparticles. Add 0.5wt% AIBN of the total mass of the dispersion, stir evenly and defoam, 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 After heat treatment for 1 hour, a transparent and flexible nanocomposite film material is obtained after demoulding. The thickness of the film is 0.070mm, and the test results of its optical properties are shown in Table 3. See image 3.

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

[0052] table 3

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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.

Description

technical field [0001] The invention relates to a highly transparent ultraviolet-blocking imitation ceramic flexible nano-composite membrane material and a preparation method thereof, which belong to the field of composite membranes synthesized by polymer organic-inorganic nanoparticle composite technology. Background technique [0002] Known as the "invisible killer", ultraviolet rays are actually a kind of electromagnetic wave. A moderate amount of ultraviolet radiation has a bactericidal effect and can also promote the synthesis of vitamin D, which is beneficial to human health. But excessive ultraviolet radiation can cause harm to the skin, eyes and immune system of the human body. Since the 1920s, due to the extensive use of freon and fluorocarbon series solvents around the world, the ozone layer in the earth's atmosphere has been severely damaged, and the radiation amount of ultraviolet rays in sunlight reaching the ground has increased. Therefore, products with the f...

Claims

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Application Information

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IPC IPC(8): C08L33/10C08L43/04C08L33/08C08L31/04C08L33/14C08K9/10C08K3/22C08K3/36C08F120/18C08F130/08C08F118/08C08F120/28C08F2/48
Inventor 陈建峰刘海涛曾晓飞丁书云
Owner BEIJING UNIV OF CHEM TECH
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