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Photochromic powder, photochromic film, photochromic glass and preparation method thereof

A photochromic glass and photochromic technology, applied in chemical instruments and methods, glass/slag layered products, adhesives, etc., can solve problems such as poor discoloration performance, achieve improved discoloration performance, low cost, and good discoloration performance effect

Active Publication Date: 2014-03-12
信义超薄玻璃(东莞)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, there are also some patents on photochromic glass abroad, but most of them are improved technologies for silver halide and photosensitizer systems, and the color-changing substances are all in the glass body.
However, PVB films made of inorganic photochromic materials and laminated glass thereof have not appeared so far.
Moreover, the discoloration performance of the present inorganic photochromic powder is not good, and it is difficult to meet the needs of production.

Method used

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  • Photochromic powder, photochromic film, photochromic glass and preparation method thereof
  • Photochromic powder, photochromic film, photochromic glass and preparation method thereof
  • Photochromic powder, photochromic film, photochromic glass and preparation method thereof

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preparation example Construction

[0037] Specifically, the photochromic film preparation method includes the following steps:

[0038]Provide polyvinyl butyral, plasticizer, coupling agent and the above-mentioned photochromic powder, the photochromic powder, polyvinyl butyral, plasticizer and coupling agent according to the following weight percentage Mix to obtain a mixture, put the mixture into a mixer and stir for 10-20 minutes, heat to 140-160°C to melt and extrude to make a film of 0.38-3.04 mm, and then cool, remove water, blow dry, etc. Afterwards, obtain photochromic film; The weight percent of each component is as follows:

[0039]

[0040] Specifically, the polyvinyl butyral, plasticizer, coupling agent and photochromic powder are the same as those described above, and will not be repeated here.

[0041] The photochromic film of the embodiment of the present invention has a better color changing effect by selecting the above photochromic powder.

[0042] The embodiment of the present invention a...

Embodiment 1

[0056] The preparation method of the photochromic glass of this embodiment comprises the following steps:

[0057] The first step is to prepare inorganic photochromic powder:

[0058] Weigh 80 parts by weight of tungsten oxide, 10 parts by weight of titanium oxide, 5 parts by weight of zinc oxide and 20 parts by weight of oxalic acid, after mixing evenly, transfer the material to a high-energy ball mill and grind and dope for 2 hours to make these powders The particle size reaches micron and nanometer levels, and makes various material particles closely bonded to each other by intermolecular force, resulting in WO 3 -H 2 C 2 o 4 -TiO 2 - ZnO inorganic photochromic powder;

[0059] The second step is to prepare PVB photochromic film:

[0060] Take 1 part by weight of WO 3 -H 2 C 2 o 4 -TiO 2 -ZnO inorganic photochromic powder, 1 weight part of triethylene glycol di-n-heptanoate plasticizer, 0.8 weight part of coupling agent select vinyl triethoxysilane and 97.2 weigh...

Embodiment 2

[0065] The preparation method of the photochromic glass of this embodiment comprises the following steps:

[0066] The first step is to prepare inorganic photochromic powder:

[0067] Weigh 40 parts by weight of tungsten oxide, 5 parts by weight of titanium oxide, 3 parts by weight of zinc oxide and 15 parts by weight of oxalic acid, after mixing evenly, transfer the material to a high-energy ball mill and grind and dope for 3 hours to make these powders The particle size reaches micron and nanometer levels, and makes various material particles closely bonded to each other by intermolecular force, resulting in WO 3 -H 2 C 2 o 4 -TiO 2 - ZnO inorganic photochromic powder;

[0068] The second step is to prepare PVB photochromic film:

[0069] Take 2 parts by weight of WO 3 -H 2 C 2 o 4 -TiO 2 -ZnO inorganic photochromic powder, 1.5 parts by weight of triethylene glycol di-n-heptanoate plasticizer, 0.9 parts by weight of coupling agent select vinyl triethoxysilane and ...

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Abstract

The invention is applicable to the technical field of glass, and provides a photochromic powder, a photochromic film, a photochromic glass and a preparation method thereof. The photochromic powder includes tungsten oxide, oxalic acid, titanium oxide and zinc oxide. The photochromic powder provided by the invention employs titanium oxide, zinc oxide and tungsten oxide to form a trinary semiconductor; through the interband synergistic effect, the trinary semiconductor is more vulnerable to sun light excitation for generation of electron-hole pairs, so as to greatly improve discolouration performance.

Description

technical field [0001] The invention belongs to the technical field of glass, and in particular relates to a photochromic powder, a photochromic film, a photochromic glass and a preparation method. Background technique [0002] Laminated glass is made by pasting two or more pieces of glass under certain temperature and pressure with film, also known as laminated glass or laminated glass. The film is usually a film such as PVB (Polyvinyl butyral, polyvinyl butyral). Laminated glass still maintains high transmittance to visible light and infrared rays in sunlight, resulting in poor energy-saving effect. [0003] Photochromic glass is a new type of energy-saving glass. When the light is enhanced, the glass gradually becomes darker, which reduces the transmittance of light and heat; when the light is weakened, the glass becomes bright again, which improves the transmittance of light and heat. Rate. This kind of smart glass, which can automatically change the light transmittan...

Claims

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Application Information

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IPC IPC(8): C09J7/00C09J129/14C09J11/04C09J11/06B32B17/06
Inventor 董清世张麒万军鹏
Owner 信义超薄玻璃(东莞)有限公司
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