Preparation method of infrared obstructing functional polyurethane paint

A polyurethane coating, infrared blocking technology, applied in the fields of nanomaterials and optics, can solve the problems of temperature rise and temperature rise, achieve excellent film-forming properties and weather resistance, strong applicability, and improve dispersion stability.

Inactive Publication Date: 2019-03-29
奈蓝(上海)新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Infrared light, especially near-infrared light, has obvious thermal effects, which ca

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] (1) Add cesium tungsten bronze powder and polyvinylamine into methyl isobutyl ketone, stir evenly and then pump into a sand mill for grinding and dispersing until the average particle size is 80-100 nanometers to obtain a slurry; in the slurry Add castor oil and isophorone diisocyanate, and prepolymerize at 60°C for 3 hours to obtain component A;

[0023] (2) Add p-di-o-chloroaniline methane and 3-aminopropyltrimethoxysilane into methyl isobutyl ketone, heat to 40-50°C to dissolve, and obtain component B;

[0024] The volume ratio of each component is:

[0025] 150 parts of methyl isobutyl ketone

[0026] Cesium tungsten bronze powder 80 parts

[0027] 3 parts polyvinylamine

[0028] 45 parts castor oil

[0029] 60 parts of isophorone diisocyanate

[0030] 25 parts of p-dichloroaniline methane

[0031] 25 parts of 3-aminopropyltrimethoxysilane

[0032] (3) Mix the AB components of steps (1) and (2), and brush to form a film within 1 hour.

Embodiment 2

[0034] (1) Add cesium tungsten bronze powder and polyethyleneimine into methyl isobutyl ketone, stir evenly and then pump into a sand mill for grinding and dispersing until the average particle size is 80-100 nanometers to obtain a slurry; Add castor oil and isophorone diisocyanate, pre-polymerize at 60°C for 3 hours to obtain component A;

[0035] (2) Add p-di-o-chloroaniline methane and 3-aminopropyltrimethoxysilane into methyl isobutyl ketone, heat to 40-50°C to dissolve, and obtain component B;

[0036] The volume ratio of each component is:

[0037] 150 parts of methyl isobutyl ketone

[0038] Cesium tungsten bronze powder 100 parts

[0039] Polyethyleneimine 5 parts

[0040] Castor oil 40 parts

[0041] 65 parts of isophorone diisocyanate

[0042] 20 parts of p-di-o-chloroaniline methane

[0043] 30 parts of 3-aminopropyltrimethoxysilane

[0044] (3) Mix the AB components of steps (1) and (2), and brush to form a film within 1 hour.

Embodiment 3

[0046] (1) Add cesium tungsten bronze powder and polyamidine into methyl isobutyl ketone, stir evenly and then pump into a sand mill to grind and disperse until the average particle size is 80-100 nanometers to obtain a slurry; add Castor oil and isophorone diisocyanate, prepolymerized at 90°C for 2.5 hours to obtain component A;

[0047] (2) Add p-di-o-chloroaniline methane and 3-aminopropyltrimethoxysilane into methyl isobutyl ketone, heat to 40-50°C to dissolve, and obtain component B;

[0048] The volume ratio of each component is:

[0049] 150 parts of methyl isobutyl ketone

[0050] Cesium tungsten bronze powder 130 parts

[0051] Polyamidine 8 parts

[0052] Castor oil 40 parts

[0053] 65 parts of isophorone diisocyanate

[0054] 30 parts of p-dichloroaniline methane

[0055] 20 parts of 3-aminopropyltrimethoxysilane

[0056] (3) Mix the AB components of steps (1) and (2), and brush to form a film within 1 hour.

[0057] The performance of polyurethane coating ...

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PUM

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Abstract

The invention provides a preparation method of an infrared obstructing functional polyurethane paint. The method is characterized by including the steps of: (1) adding cesium tungsten bronze powder and a dispersant into methyl isobutyl ketone, stirring the substances evenly, then pumping the mixture into a sand mill for grinding and dispersion to an average particle size of 80-100nanometer, thus obtaining a slurry; adding castor oil and isophorone diisocyanate into the slurry, and conducting prepolymerization at 60-90DEG C for 2.5-3h, thus obtaining a component A; (2) adding p-di-o-chloroaniline methane and 3-aminopropyl trimethoxysilane into methyl isobutyl ketone, and performing heating to 40-50DEG C for dissolving to obtain a component B; and (3) mixing the component A and component B obtained in step (1) and (2) respectively, and performing brush coating into a film in 1h.

Description

technical field [0001] The invention belongs to the field of nanometer material and optics, and relates to a preparation method of polyurethane coating with infrared blocking function. Background technique [0002] Infrared light, especially near-infrared light, has an obvious thermal effect, which can easily lead to a rise in temperature, resulting in an increase in temperature such as in a room or in a car. The currently disclosed infrared blocking materials generally refer to a class of functional materials that can strongly absorb or reflect infrared light without affecting the transmission of visible light. The reported inorganic materials with strong infrared absorption or reflection properties mainly include ATO, ITO, AZO and LaB. 6 Wait. Cesium tungsten bronze can block near-infrared light with a wavelength greater than 900nm, so it has excellent near-infrared blocking performance. [0003] About 50% of the heat in natural light radiation comes from infrared rays....

Claims

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Application Information

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IPC IPC(8): C09D175/14C09D5/32C09D5/33C09D7/61C09D7/65C08G18/36C08G18/75C08G18/32
CPCC08G18/3243C08G18/36C08G18/755C08K2003/085C08K2201/011C09D5/004C09D5/32C09D175/14C09D7/61C09D7/65C08L79/02C08K3/08
Inventor 汪元元张春明
Owner 奈蓝(上海)新材料科技有限公司
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