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Preparation method of intelligent heat-insulating organic glass

A plexiglass and intelligent thermal insulation technology, which is applied in the preparation of intelligent thermal insulation plexiglass and the field of plexiglass preparation, can solve the problem that the visible light transmittance needs to be further improved, achieve good PMMA toughening effect, improve optical performance, The effect of reducing the cost of raw materials for PMMA production

Pending Publication Date: 2021-08-24
SHAANXI SCI TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Sichuan University first reported nano VO 2 (M) Mixing and polymerizing with PMMA prepolymer to obtain a research report with infrared intelligent heat-insulating plexiglass, which proves that VO 2 (M) Modified plexiglass has outstanding heat insulation performance, but the transmittance of visible light needs to be further improved, which is also the reason for VO 2 (M) Bottleneck problem in smart window application

Method used

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Examples

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preparation example Construction

[0031] An embodiment of the present invention provides a method for preparing intelligent heat-insulating plexiglass, including:

[0032] 1) W / Ti co-doped VO 2 (M) synthesis and slurry preparation thereof:

[0033] 1a) W / Ti co-doped VO 2 (M) Synthesis:

[0034]According to the mass ratio, 2g of vanadium pentoxide, 0.07-0.30g of sodium tungstate, 0.06-0.20g of titanium sulfate and 0.18-0.20g of urea were added to 130-150g of 0.28- 0.30g / ml oxalic acid aqueous solution, move the resulting mixed system into a polytetrafluoroethylene reaction kettle, seal it and place it in a drying oven at 185-200°C for hydrothermal reaction for 48-54 hours, cool and stand still, pour the supernatant, and collect Precipitation, repeated washing with distilled water and absolute ethanol for 3 times, drying at 50-80°C for 8-12 hours, placing in a vacuum tube-type atmosphere furnace protected by argon atmosphere at 600-800°C, annealing for 4-6 hours to obtain W / Ti co-doped VO 2 (M);

[0035] 1...

Embodiment 1

[0047] 1) W / Ti co-doped VO 2 (M) synthesis and slurry preparation thereof:

[0048] W / Ti co-doped VO 2 (M) Synthesis:

[0049] According to the mass ratio, add 2g of vanadium pentoxide, 0.20g of sodium tungstate, 0.20g of titanium sulfate and 0.18g of urea into 130g of 0.28g / ml oxalic acid aqueous solution in turn under the condition of stirring in a water bath at 50°C, and mix the obtained The system was moved into a polytetrafluoroethylene reactor, sealed and placed in a 200°C drying oven for hydrothermal reaction for 50 hours, cooled and left to stand, poured the supernatant, collected the precipitate, washed 3 times with distilled water and absolute ethanol, and heated at 60°C After drying for 10 hours, put it in a vacuum tube atmosphere furnace protected by argon atmosphere at 800 °C, and anneal for 4 hours to obtain W / Ti co-doped VO 2 (M);

[0050] W / Ti co-doped VO 2 (M) slurry preparation:

[0051] The W / Ti co-doped VO obtained in step 1a) 2 (M) mixed with TEP tr...

Embodiment 2

[0061] 1) W / Ti co-doped VO 2 (M) synthesis and slurry preparation thereof:

[0062] W / Ti co-doped VO 2 (M) Synthesis:

[0063] According to the mass ratio, 2g of vanadium pentoxide, 0.30g of sodium tungstate, 0.1g of titanium sulfate and 0.20g of urea were added to 140g of 0.3g / ml oxalic acid aqueous solution in turn under the condition of stirring in a water bath at 55°C, and the obtained mixture was mixed The system was moved into a polytetrafluoroethylene reactor, sealed and placed in a 190°C drying oven for hydrothermal reaction for 52 hours, cooled and left to stand, poured the supernatant, collected the precipitate, washed 3 times with distilled water and absolute ethanol, and heated at 50°C After drying for 12 hours, put it in a vacuum tube atmosphere furnace protected by argon atmosphere at 750 °C, and anneal for 5 hours to obtain W / Ti co-doped VO 2 (M);

[0064] W / Ti co-doped VO 2 (M) slurry preparation:

[0065] The W / Ti co-doped VO obtained in step 1a) 2 (M) ...

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Abstract

The invention discloses a preparation method of intelligent heat-insulating organic glass, the preparation method comprises the following steps: carrying out hydrothermal reaction on vanadium pentoxide, sodium tungstate, titanium sulfate, oxalic acid and urea to obtain W / Ti co-doped VO2 (M); mixing the W / Ti co-doped VO2 (M) with TEP, and grinding to obtain paste W / Ti co-doped VO2 (M) slurry; mixing and dissolving mMA, TEP, PMMA molding powder and AIBN and polymerizing in a water bath kettle, and obtaining a PMMA molding powder dissolved prepolymer; mixing the PMMA molding powder dissolved prepolymer with the W / Ti co-doped VO2 (M) slurry, filtering, and carrying out vacuum defoaming to obtain PMMA slurry; and placing the transparent PMMA finished product plate in a toughened glass mold, filling PMMA slurry, and intermittently casting PMMA for polymerization to obtain the organic glass. The organic glass can avoid the problems of high manufacturing cost and easiness in falling off, and has an intelligent heat insulation function.

Description

technical field [0001] The invention relates to a method for preparing organic glass, in particular to a method for preparing intelligent heat-insulating organic glass, which belongs to the field of organic glass. Background technique [0002] VO 2 (M) The application in smart windows is mainly through film, coating, interlayer and other methods. For example, the Nagoya Industrial Technology Research Institute of Japan Industrial Technology Institute successfully developed a coating film for window glass with a set critical temperature, and British scientists also developed a film with "Smart windows" for heat-insulating smart glass, and more. Although it solves the city's "heat island effect" and achieves the goal of building energy conservation to varying degrees, there are problems such as film shedding, short service life, and high cost. And VO 2 The phase transition temperature of (M) is much higher than room temperature, the phase transition stability needs to be im...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F265/06C08F220/14C08K3/22C08K5/521
CPCC08F265/06C08K3/22C08K5/521C08F220/14
Inventor 袁新强张堃蒋鹏艾桃桃邓志峰包维维张伟
Owner SHAANXI SCI TECH UNIV
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