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Highly-transparent ultraviolet-resistant energy-saving film and preparation method thereof

An energy-saving film and transparent violet technology, which is applied in the field of high-transparency UV-blocking energy-saving film and its preparation, can solve the problems of not mentioning industrialization data and application prospects, unable to truly realize mass production, and unsuitable for large-scale industrial production. , to achieve the effect of increasing anti-ultraviolet energy-saving performance, excellent ultraviolet shielding performance, and overcoming poor storage stability

Active Publication Date: 2009-10-14
BEIJING UNIV OF CHEM TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example: Chinese patent 200410013397 discloses a nitrogen-doped titanium dioxide hydrophobic and UV-resistant transparent film prepared by magnetron sputtering, but the average visible light transmittance of the film is only 70% to 80%; Chinese patent 02136643 discloses a A kind of glass coated with nano-ZnO film layer, but only briefly mentions the use of CVD process or vacuum magnetron sputtering process, but does not mention its industrialization data and application prospects; Chinese patent 01804833 discloses an anti- Reflective anti-ultraviolet multilayer coating, using cerium nitrate hexahydrate, alcohol, and chelating agent as corresponding solvents to prepare anti-ultraviolet glass, but this method cannot really achieve mass production; Chinese patent 200610135230 discloses a method that uses online high-temperature pyrolysis The anti-ultraviolet coated glass manufactured by spraying method has complicated process, and the ultraviolet transmittance of this product is only lower than 8%.
[0007] In the film prepared by the above method, the highest visible light transmittance is only 80%, the film forming method or equipment used are expensive, the one-time investment is large, and the cost is high. restrictions, or not suitable for organic substrates, the product quality is average, not suitable for large-scale industrial production

Method used

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  • Highly-transparent ultraviolet-resistant energy-saving film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] 1) The coarse dispersion system of ZnO nanoparticle methanol solution was centrifuged and washed, then added to absolute ethanol, and the uniformly dispersed zinc oxide nanoparticle ethanol dispersion was made by ultrasonication. The concentration of zinc oxide nanoparticles in the dispersion was 5.88 wt%, in the shape of a long rod with a diameter of about 50nm;

[0042] 2) Take 16ml of the dispersion in step 1), add 4ml of absolute ethanol, and mix evenly with magnetic stirring. After ultrasonic treatment for 4 hours, add 0.8g PVB powder, mix evenly with magnetic stirring, and ultrasonically disperse for 0.5h to prepare the film-making stock solution , the parameters of the obtained film-making stock solution system are shown in Table 1-1;

[0043] Concentration of ZnO in EtOH (g / ml)

[0044] Table 1-1

[0045] 3) Select the PET substrate for film formation: after the PET substrate is pretreated with deionized water and alcohol, it is fixed on the clip of t...

Embodiment 2

[0049] 1) The ZnO nanoparticle n-hexane coarse dispersion system is centrifuged and washed, then added to the toluene solution, and ultrasonically dispersed to make a zinc oxide nanoparticle toluene dispersion, and the concentration of the zinc oxide nanoparticle in the dispersion is 5wt%. Spherical shape, particle size 10-20nm;

[0050] 2) Measure the toluene solution, PMMA-PS (polymethyl methacrylate PMMA and polystyrene PS copolymer) and the zinc oxide nanoparticle toluene dispersion liquid in step 1) respectively by the ratio of Table 2-1, Mix evenly with magnetic stirring to obtain the film-making stock solution;

[0051] Concentration of ZnO in toluene (g / ml)

[0052] table 2-1

[0053] 3) Cast the film-making stock solution obtained in step 2) into a mold for direct molding, and the thickness of the obtained film is 300 μm. The optical performance test results are shown in Table 2-2.

[0054] Visible light transmittance (%) (550nm)

[0055] Table 2...

Embodiment 3

[0057] 1) Add the ZnO nanoparticle n-hexane coarse dispersion system to the butanone solution after centrifugation and washing, and ultrasonically disperse to make a zinc oxide nanoparticle butanone dispersion with a concentration of 5wt%. The zinc oxide nanoparticle in the dispersion is Spherical shape, particle size 10-20nm;

[0058] 2) Measure the butanone solution, the polymer PMMA-PS, and the zinc oxide nanoparticle butanone dispersion in step 1) according to the ratios in Table 3-1, and stir and mix evenly to obtain the film-forming stock solution;

[0059] Concentration of ZnO in butanone (g / ml)

[0060] Table 3-1

[0061] 3) Cast the film-making stock solution obtained in step 2) into a mold for direct molding, and the thickness of the obtained film is 300 μm. The optical performance test results are shown in Table 3-2.

[0062] Visible light transmittance (%) (550nm)

[0063] Table 3-2

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Abstract

The invention relates to a highly-transparent ultraviolet-resistant energy-saving film and a preparation method thereof, belonging to the field of composite films synthesized by compounding polymer and inorganic nano-particles and aiming at overcoming the defects that the prior film has low visible light transmission and high production cost. The highly-transparent ultraviolet-resistant energy-saving film comprises the following components by the weight percent: 50-99.8 of organic polymer, 0.2-50 of metal-oxide nano-particles and 0-39.9 of polymer auxiliary agent. The highly-transparent ultraviolet-resistant energy-saving film is prepared by a solution mixing method or a solution-melting mixing method; with the solution mixing method, the organic polymer and the metal-oxide nano-particles are dispersed in dispersing medium to prepare film preparing stock solution, and the film preparing stock solution is used for preparing the energy-saving film on a substrate; with the solution-melting mixing method, the mixture of the organic polymer and the metal-oxide nano-particles is dried to prepare master batch, and the master bath is mixed with the organic polymer and the polymer auxiliary agent to prepare the energy-saving film. The highly-transparent ultraviolet-resistant energy-saving film has high visible light transmission, good ultraviolet resistance and energy-saving effect, simple preparation process and low cost, thereby being suitable for industrial production.

Description

technical field [0001] The invention belongs to the field of composite thin films synthesized by polymer-inorganic nanoparticle composite technology, and specifically relates to a highly transparent ultraviolet blocking energy-saving film and a preparation method thereof. Background technique [0002] Ultraviolet light is a kind of non-visible light with specific lethality, which is called "invisible killer" by the scientific community. Since the 1920s, due to the extensive use of fluorocarbon solvents and freons, the ozone layer in the earth's atmosphere has been severely damaged, and the ultraviolet rays reaching the earth's surface have continued to increase. Ultraviolet rays are divided according to the length of their wavelengths: the wavelength of UV-A band is 320-400nm; the wavelength of UV-B is 280-320nm; Therefore, the ultraviolet wavelength range that can produce radiation to the human body is 180-400nm. [0003] The ultraviolet rays with strong radiation mainly ...

Claims

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Application Information

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IPC IPC(8): C08L29/14C08L39/06C08L33/04C08L25/06C08L69/00C08L67/02C08L75/04C08K3/22C08K3/36C08K5/10C08J5/18C03C23/00
Inventor 陈建峰曾晓飞李雪葛军林陶霞沈志刚王国全孔祥容王陶冶赵轶
Owner BEIJING UNIV OF CHEM TECH
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