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

A technology of polyvinyl butyral film and polyvinyl butyral, which is applied in the field of preparation of color intelligent dimming polyvinyl butyral film and its laminated glass, and can solve the problem that it is not suitable for mass production and expensive equipment , complex process and other issues, to reduce the possibility of oxidation and man-made damage, improve stability and life, and simplify the preparation process

Active Publication Date: 2013-07-24
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) Get 0.5g of undoped vanadium dioxide powder; VO 2 The particle size of the particles is 100nm;

[0027] (2) preparing massfraction with ethanol is the vanadium dioxide dispersion liquid of 0.5%;

[0028] (3) the dispersion liquid of vanadium dioxide is added in a certain amount of PVB resin, forms the PVB slurry that vanadium dioxide content is 1g / L after stirring;

[0029] (4) Extrude the PVB slurry and cast it to obtain the intelligent dimming PVB film.

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

Embodiment 2

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

[0033] (2) prepare the vanadium dioxide dispersion liquid that mass percent concentration is 1% with acetone;

[0034] (3) put VO 2 Add the dispersion liquid into PVB resin and form VO after stirring 2 PVB slurry with a content of 10g / L;

[0035] (4) Extrude the PVB slurry and cast it to obtain the intelligent dimming PVB film.

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

Embodiment 3

[0038] (1) get 0.5g tungsten molar content to be the vanadium dioxide powder of 1%; VO 2 The particle size of the particles is 50nm;

[0039] (2) prepare the massfraction with dimethylbenzene as the vanadium dioxide dispersion liquid of 2%;

[0040] (3) put VO 2 Add the dispersion liquid into PVB resin and form VO after stirring 2 PVB slurry with a content of 15g / L;

[0041] (4) Extrude the PVB slurry and cast it to obtain the intelligent dimming PVB film.

[0042] (5) The smart dimming PVB film and the colored PVB film are stacked and sandwiched between two pieces of ordinary glass, and the colored 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 color intelligent dimming polyvinyl butyral film and a preparation method of laminated glass thereof. Background technique: [0002] Polyvinyl butyral (PVB) is the world's best adhesive for glass and is used as an intermediate adhesive film layer in laminated safety glass manufacture. Currently, about 89% of PVB is used in the production of safety glass for construction and automotive industries. [0003] Vanadium dioxide is a transition metal oxide with phase transition properties. 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, the transition from M phase (low temperature phase) to R phase (high temperature phase). At the same time as the phase structure changes, the optical, electrical, magnetic and other physic...

Claims

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Application Information

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Patent Type & Authority Applications(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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