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Photochromic film, photochromic glass and preparation method

A photochromic glass and photochromic technology, applied in the direction of color-changing fluorescent materials, chemical instruments and methods, glass/slag layered products, etc., to achieve the effects of low cost, improved color-changing performance, and good color-changing performance

Active Publication Date: 2015-08-12
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 organic photochromic materials and laminated glass thereof have not appeared so far.

Method used

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

Examples

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preparation example Construction

[0027] Specifically, the photochromic film preparation method includes the following steps:

[0028] 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 get a mixture;

[0029] Add the mixture to a mixer and stir for 10-20 minutes, heat it to 140-160°C to melt and extrude it into a film of 0.38-3.04mm, and then cool, remove water, blow dry, etc., to obtain photoinduced Color-changing film; the weight percentage of each component is as follows:

[0030]

[0031] Specifically, the polyvinyl butyral, plasticizer, coupling agent and photochromic powder are the same as those described above, and will not be repeated here.

[0032] The photochromic film of the embodiment of the present invention has a better color changing effect by selecting the above photochromic powder.

[0033] The embodiment of the p...

Embodiment 1

[0049] The preparation method of the photochromic glass of this embodiment comprises the following steps:

[0050] The first step is to prepare PVB photochromic film:

[0051] Get 85% by weight of polyvinyl butyral, 13.5% by weight of triethylene glycol di-n-heptanoate, 1.15% by weight of vinyltriethoxysilane and 0.35% by weight of helicopyran organic photochromic powder, uniform After mixing, add it to a mixer and stir for 10 minutes, heat to 150°C to melt and extrude to make a film, and after cooling, dewatering, drying, etc., a photochromic film is obtained;

[0052] The second step is to prepare photochromic laminated glass:

[0053] Clamp a piece of photochromic film prepared in Step 2 of the same area between two pieces of glass with clean surfaces, put them together in a silica gel bag, exhaust them under 2.5KPa vacuum for 20 minutes, and transfer them to a drying oven at 85°C Insulate for 30 minutes; then heat-press in an autoclave at 1.3MPa and 135°C for 25 minutes ...

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Abstract

The invention is applicable to the field of glass technology and provides an organic photochromic film, a photochromic glass and a preparation method thereof. The photochromic glass provided by the invention comprises a first glass layer, a second glass layer, a first PVB layer, a second PVB layer and a photochromic film, which are mutually stacked. The first PVB layer and the second PVB layer are stacked and combined between the first glass layer and the second glass layer; and the photochromic film is stacked and combined between the first PVB layer and the second PVB layer. The photochromic glass provided by invention achieves substantially improved photochromic performance through the above structure.

Description

technical field [0001] The invention belongs to the technical field of glass, and in particular relates to 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 transmittance and shading coeffici...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J7/00C09J129/14C09J11/06C09K9/02B32B17/06B32B27/06B32B7/12B32B37/06
Inventor 董清世张麒
Owner 信义超薄玻璃(东莞)有限公司
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