Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of preparation method of radiation cooling film

A technology of reflective film and film-forming material, which is applied in the field of radiation cooling film preparation, can solve problems such as low reflectivity and complex on-site process, and achieve the effect of improving service life

Active Publication Date: 2021-11-19
杭州瑞酷新材料有限公司
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the use of micron-scale metal-plated reflective materials, the reflectivity of this invention is relatively low, and at the same time, the method of layered coating is adopted, and the on-site process is relatively complicated.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of preparation method of radiation cooling film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Add 2.1 parts of dispersant (Nopco Japan, SN-5040) and 1.4 parts of defoamer (Nopco Japan, SN-DEFOAMER 154) to 100 parts of water at room temperature of 25°C, stir well and add 70 parts of barium sulfate (Shaanxi Fuhua Group, modified precipitated barium sulfate superior product), 30 parts of silicon dioxide (Shouguang Baote Chemical Industry, BT-303P) dispersed for 30 minutes, then added 40 parts of polyurethane dispersion (Wanhua Chemical, 1629), 5 parts of cross-linking agent (Wanhua Chemical, 161), 0.6 parts of thickener (Wanhua Chemical, U300), 0.5 part of antibacterial agent (Hangzhou Luochuan Chemical, BIT-20) and 0.4 part of antifungal agent (Guangzhou Jianisi, GNCE5700-T50), and stir evenly. Filter through a 300-mesh filter screen to obtain the coating solution, apply the 200 μm thick coating solution to the BOPET aluminized film (Dongsheng packaging material, Cangnan County, 30 μm thick) with an anilox roller, and dry at 60 ° C to obtain Radiation cooling...

Embodiment 2

[0033] Add 2.4 parts of dispersant (Nopco Japan, SN-5040) and 1.6 parts of defoamer (Nopco Japan, SN-DEFOAMER 154) into 135 parts of water at room temperature 25°C, stir well and add 40 parts of silicic acid Aluminum sodium (German Degussa, 820A), 60 parts of silicon dioxide (Shouguang Baote Chemical, BT-303P) were dispersed for 30 minutes, and then 60 parts of silicon-acrylic emulsion (Beijing Dongfang Yakeli, BC-3206), 1.5 Thickener (Wanhua Chemical, U300), 0.6 part of antibacterial agent (Hangzhou Luochuan Chemical Industry, BIT-20) and 0.9 part of antifungal agent (Guangzhou Jianisi, GNCE5700-T50), and stir evenly. Filter through a 200-mesh filter to obtain a coating solution, and use an anilox roller to apply a 300 μm thick coating solution to a self-adhesive BOPET aluminum-coated film (Zhongshan Pinhao Technology, 75 μm thick), and heat it at 80 ° C. Dry to obtain a radiation cooling film.

Embodiment 3

[0035]Add 2 parts of dispersant (Nanjing Shuguang Chemical Industry Co., Ltd., methyltrimethoxysilane) and 1.4 parts of defoamer (Japan Nopco, SN-DEFOAMER 154) to a mixture of 60 parts of petroleum ether and 40 parts of ethanol at room temperature of 25 °C In the solvent, after stirring evenly, add 80 parts of zirconia (Lomon Billion Group, particle size 0.5 ~ 1 μm), 20 parts of silicon dioxide (Shouguang Baote Chemical, BT-303P) to disperse for 30 minutes, and then add 30 parts of polymer Dimethylsiloxane (Hubei Xinsihai Chemical, SH-9502), 5 parts of curing agent (Nanjing Shuguang Chemical, methyltriethoxysilane), 4 parts of anti-mold and antibacterial agent (Guangzhou Jiannis, GNCE5700-F) , 0.3 parts of catalyst (Shanghai Aladdin reagent, p-toluenesulfonic acid), and stir evenly. Filter through a 300-mesh filter screen to obtain the coating solution, apply the 400 μm thick coating solution to the BOPET aluminized film (Dongsheng packaging material, Cangnan County, 120 μm th...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
particle diameteraaaaaaaaaa
Login to View More

Abstract

The invention discloses a radiation cooling film and a preparation method thereof. The preparation method comprises: adding a polymer film-forming material, an ultraviolet reflection material and an auxiliary agent into a solvent, mixing evenly, and filtering through a filter to obtain a coating solution, Then the coating solution is coated on the reflective film, and dried to obtain a radiation cooling film. In the present invention, the reflective film has reasonable reflectivity and thickness, which provides a basis for high reflectivity for forming the radiation cooling film. The polymer film-forming substances and additives can be uniformly dissolved in the solvent, and can form a dense coating after being applied to the reflective film, which has the effects of waterproof, antibacterial and mildew-proof. The ultraviolet reflective material can reflect ultraviolet rays, further improves the reflectivity and also has a high emissivity of 8-13 μm. The radiation cooling film prepared by the invention has extremely high sunlight reflectance and hemispherical emissivity, and the application of the radiation cooling film can realize the cooling effect, and has good application prospect.

Description

technical field [0001] The invention relates to the field of environment-friendly and energy-saving materials, in particular to a method for preparing a radiation cooling film. Background technique [0002] Solar radiation brings high temperature to buildings and industrial facilities, affecting production and life. In order to cope with the high temperature of the facility, water spraying or air conditioning are generally used to cool down, and thermal insulation materials are used to block the heat. Resisting high temperatures often requires a lot of energy, and therefore brings high energy consumption. Although reflective thermal insulation coating technology can also significantly reduce the temperature of various facilities, it cannot achieve active cooling, and can only be used as an auxiliary means to assist air conditioners to cool down. [0003] In recent years, metamaterials with ultra-high reflectivity and high emissivity have attracted widespread attention, whi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C08J7/04C09D175/04C09D133/04C09D183/04C09D129/14C09D5/14C09D5/33C08L67/02
Inventor 盛艳
Owner 杭州瑞酷新材料有限公司