Low-radiation coating and preparation method thereof

A low-radiation, coating technology, applied in the direction of reflection/signal coatings, coatings, etc., can solve the problems of heat loss, glass temperature rise, etc., to achieve the effect of enhanced thermal insulation, low infrared emissivity, and convenient use

Inactive Publication Date: 2019-01-11
INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, in terms of building energy saving, for ordinary glass with a thickness of 3 mm, it can absorb more than 89% of infrared radiation energy to increase the temperature of the glass, and then dissipate heat through the radiation of the glass and heat exchange with the surrounding air, resulting in A large part of the heat loss in the room

Method used

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  • Low-radiation coating and preparation method thereof
  • Low-radiation coating and preparation method thereof
  • Low-radiation coating and preparation method thereof

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preparation example Construction

[0028] image 3 show figure 1 Flowchart of the preparation method of the low-E coating. like image 3 Shown, the preparation method of low radiation coating can comprise the steps:

[0029] S1, preparing a silver nanowire dispersion, wherein the concentration of the silver nanowire is 1-15 mg / mL;

[0030] S2, preparing a transparent polymer dispersion, wherein the mass fraction of the transparent polymer is 1-15%;

[0031] S3, mixing the silver nanowire dispersion with the transparent polymer dispersion to obtain a low-emissivity coating, where the concentration of the silver nanowires in the low-emission coating is 1-10 mg / mL.

[0032] Specifically, the polyol method can be used to prepare silver nanowire dispersions, including:

[0033] Step 1: First add a certain amount of anhydrous ethylene glycol into the spherical flask, then add an appropriate amount of PtCl 2 , heated to 160°C, and stirred with a magnetic stirrer for 10 to 20 minutes;

[0034] Step 2: Incorporat...

Embodiment 1

[0048] Preparation of low-emissivity coatings with transparent polymer as PMMA, including:

[0049] Step 11, prepare silver nano-dispersion liquid

[0050] (1) 1mL PtCl 2 Add to 10mL of anhydrous ethylene glycol, heat and keep at 160°C, stir with a magnetic stirrer to obtain a uniformly mixed solution;

[0051] (2) 5mL AgNO 3 Add 10mL of polyvinylpyrrolidone (PVP) dropwise into the mixture of (1) at the same time, and stir for 50min with a magnetic stirrer;

[0052] (3) Dilute the reactant of (2) with 50mL of acetone, separate the silver nanowires from the solvent with a centrifuge, the speed of the centrifuge is 5000rpm, and the separation time is 10min; repeat 3-5 times until the supernatant becomes colorless , pour the obtained silver nanowires into isopropanol for later use.

[0053] Step 12, prepare PMMA-anisole solution

[0054] Take 4.8g of PMMA particles into the reactor, then add 75.2mL of anisole solution, and finally stir with a magnetic stirrer for 24h.

[00...

Embodiment 2

[0058] Preparation of low-emissivity coatings with transparent polymer as TPX, including:

[0059] Step 21, preparation of silver nano-dispersion

[0060] (1) Dispense 0.5mL PtCl 2 Add to 5mL of anhydrous ethylene glycol, heat and keep at 160°C, stir with a magnetic stirrer to obtain a uniformly mixed solution;

[0061] (2) Add 3mL AgNO 3 Add 6mL of polyvinylpyrrolidone (PVP) dropwise into the mixture of (1) at the same time, and stir for 50min with a magnetic stirrer;

[0062] (3) Dilute the reactant of (2) with 25mL acetone, separate the silver nanowires from the solvent with a centrifuge, the speed of the centrifuge is 5000rpm, and the separation time is 10min; repeat 3-5 times until the supernatant becomes colorless , pour the obtained silver nanowires into isopropanol for later use.

[0063] Step 22. Preparation of TPX-cyclohexane and trichlorethylene solution

[0064] Add 25mL cyclohexane and 25mL trichlorethylene into the reactor, heat to 60°C, then add 1g of TPX, ...

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Abstract

The invention discloses a low-radiation coating and a preparation method thereof. The low-radiation coating comprises a silver nanowire, a transparent polymer and an organic solvent, wherein the concentration of the silver nanowire is 1-10 mg / mL; the transparent polymer comprises one of poly(methyl methacrylate) (PMMA), poly(4-methyl pentene) (TPX), polyethylene (PE) and polyethylene terephthalate(PET).

Description

technical field [0001] Embodiments of the present invention relate to energy-saving materials, in particular to a low-radiation coating and a preparation method thereof. Background technique [0002] Low-emissivity materials have broad application prospects in solar heat utilization, special clothing and other fields. For example, in terms of building energy saving, for ordinary glass with a thickness of 3 mm, it can absorb more than 89% of infrared radiation energy to increase the temperature of the glass, and then dissipate heat through the radiation of the glass and heat exchange with the surrounding air, resulting in A large part of the heat loss in the room. In this regard, if the low-emissivity material is coated on the glass surface, since the low-emissivity material has higher visible light transmittance and higher infrared reflectivity, it can maximize the use of visible light energy and reduce indoor heat loss. [0003] In terms of thermal clothing, since the rad...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/12C09D123/20C09D5/33C09D7/61
CPCC08K2201/011C09D5/004C09D123/20C09D133/12C09D7/61C09D7/70C08K7/06
Inventor 高殷张航淮秀兰李涛刘斌陈哲杨明
Owner INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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