Colorful smart dimming polyvinyl butyral film and preparation method of laminated glass thereof

The technology of polyvinyl butyral film and polyvinyl butyral is applied in the field of preparation of color intelligent dimming polyvinyl butyral film and laminated glass, which can solve the problem of being unsuitable for mass production and expensive equipment. , complex process and other problems, to achieve the effect of reducing the possibility of oxidation and man-made damage, improving stability and life, and simplifying the preparation process

Active Publication Date: 2015-01-07
GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the commonly used methods for preparing thin films containing vanadium dioxide mainly include magnetron sputtering, chemical vapor deposition, and sol-gel methods. These methods all have the disadvantages of expensive equipment, high cost, complicated process, small film-forming area, and insufficient Suitable for mass production and other limitations
Patents CN102399072A, CN102120615A, CN102464354A, and CN102336528A all mention the method of dispersing the vanadium dioxide powder and coating the film, but since the dispersion system used in these methods does not have good cohesiveness on the substrate, it can only be used in specific Coating on the substrate, which greatly limits its scope of use
Even coatings applied on flexible substrates still require a layer of mounting glue before they can be used, which not only increases the complexity of the film process, but also increases the cost of the film
[0005] In addition, since the vanadium dioxide coating can only display a single khaki color, it is not popular with the public. Patents CN101255015A and CN101269918B change the color of the vanadium dioxide intelligent dimming film by controlling the thickness of the interference layer during the sputtering process, but This method is not suitable for use with VO 2 Powder Coating Technology

Method used

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  • Colorful smart dimming polyvinyl butyral film and preparation method of laminated glass thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) Take 0.5g of undoped vanadium dioxide powder; VO 2 The particle size is 100nm;

[0027] (2) Prepare 0.5% vanadium dioxide dispersion with ethanol;

[0028] (3) Add the vanadium dioxide dispersion to a certain amount of PVB resin, and stir to form a PVB slurry with a vanadium dioxide content of 1g / L;

[0029] (4) The PVB slurry is extruded and then cast and drawn to obtain an intelligent dimming PVB film.

[0030] (5) The smart dimming PVB film and the color PVB film are laminated and sandwiched between two pieces of ordinary glass, and the color smart dimming PVB laminated glass is obtained by hot pressing.

Embodiment 2

[0032] (1) Take 0.5g of vanadium dioxide powder with 0.5% tungsten molar content; VO 2 The particle size is 20nm;

[0033] (2) Prepare a vanadium dioxide dispersion with a mass percentage of 1% with acetone;

[0034] (3) put VO 2 The dispersion liquid is added to PVB resin, and VO is formed after stirring 2 PVB slurry with a content of 10g / L;

[0035] (4) The PVB slurry is extruded and then cast and drawn to obtain an intelligent dimming PVB film.

[0036] (5) The smart dimming PVB film and the color PVB film are laminated and sandwiched between two pieces of tempered glass, and the color smart dimming PVB laminated glass is obtained by hot pressing.

Embodiment 3

[0038] (1) Take 0.5g of vanadium dioxide powder with 1% tungsten molar content; VO 2 The particle size is 50nm;

[0039] (2) Use xylene to prepare a vanadium dioxide dispersion with a mass fraction of 2%;

[0040] (3) put VO 2 The dispersion liquid is added to PVB resin, and VO is formed after stirring 2 PVB slurry with a content of 15g / L;

[0041] (4) The PVB slurry is extruded and then cast and drawn to obtain an intelligent dimming PVB film.

[0042] (5) The smart dimming PVB film and the color PVB film are laminated and sandwiched between two pieces of ordinary glass, and the color smart dimming PVB laminated glass is obtained by hot pressing.

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Abstract

The invention discloses a colorful smart dimming polyvinyl butyral film and a preparation method of laminated glass of the colorful smart dimming polyvinyl butyral film. The PVB (Polyvinyl Butyral) film having the color smart dimming function provided by the invention can be formed on glass without any binder and extra process through one step; the preparation process is greatly simplified; as a result, the cost of smart glass is reduced; and meanwhile the stability of the smart dimming layer is greatly improved and the service life of the smart dimming layer is greatly prolonged. The color of the laminated glass is quite easy for people to accept, and the laminated glass can be widely applied to the aspects of energy conservation of buildings, thermal insulation of vehicle windows and the like.

Description

Technical field: [0001] The invention relates to the technical field of building energy saving, in particular to a preparation method of a color intelligent dimming polyvinyl butyral film and its laminated glass. Background technique: [0002] Polyvinyl butyral (PVB) is the best adhesive for glass in the world. It is made of laminated safety glass as an intermediate adhesive film layer. Currently, about 89% of PVB is used to produce safety glass for the construction and automotive industries. [0003] Vanadium dioxide is a transition metal oxide with phase change characteristics. The vanadium dioxide single crystal material can undergo a phase transition at 68 degrees, from a low-temperature monoclinic semiconductor state to a high-temperature tetragonal metal state, that is, a transition from M phase (low temperature phase) to R phase (high temperature phase) occurs. While the phase structure changes, the optical, electrical, magnetic and other physical properties of the vanadiu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J7/00C09J129/04C09J11/04C03C27/12
Inventor 徐刚肖秀娣史继富熊斌
Owner GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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