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Preparation method of a loaded nano-doped light-cured water-based anti-fog self-cleaning coating

A load-type, light-curing technology, applied in polyurea/polyurethane coatings, coatings, etc., can solve problems such as poor curing performance

Active Publication Date: 2015-09-30
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, a single light-curable water-based resin has certain disadvantages in application, such as the high brittleness of the resin with high functionality, and most of the resins are bifunctional substances, and there is a problem of poor curing performance. Anti-fog self-cleaning, antibacterial, water resistance, weather resistance and other aspects of performance need to be further improved, so at this stage, the addition of inorganic nano-materials is often used to improve its anti-fog, water resistance, weather resistance, hardness, thermal stability and even antibacterial aspects Shortcomings

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] 1. Loaded TiO 2 -γ-Al 2 o 3 Preparation of inorganic composite materials: firstly mix 1.0g γ-Al 2 o 3 Disperse the particles in 10ml of deionized water, stir until evenly dispersed, add 8.2g of butyl titanate (mixed with 30ml of absolute ethanol) under vigorous stirring to fully hydrolyze the butyl titanate, then filter and put it in a 70°C drying oven Dry in medium for 2h, and finally bake in a muffle furnace at a temperature of 450°C. After 2h, the supported TiO 2 -γ-Al 2 o 3 (spare).

[0012] 2. Loaded TiO 2 -γ-Al 2 o 3 Preparation of light-cured water-based anti-fog self-cleaning coating:

[0013] Add 9.45g of IPDI to a dry three-necked flask equipped with a stirrer and a thermometer, add 8.1g of PPG400 and 0.02g of TBDL to the dropping funnel and shake well. , the temperature was controlled at 40°C, and the PPG400 was dripped and reacted for 2 hours. Then, the -NCO content was measured by the di-n-butylamine method. When the -NCO content was lower than t...

Embodiment 2

[0017] 1. Loaded TiO 2 -γ-Al 2 o 3 Preparation of inorganic composite materials: firstly mix 0.5g γ-Al 2 o 3 Disperse the particles in 5ml of deionized water, stir until evenly dispersed, add 4.0g of butyl titanate (mixed with 20ml of absolute ethanol) under vigorous stirring to fully hydrolyze the butyl titanate, then filter and put it in a 70°C drying oven Dry in medium for 2h, and finally bake in a muffle furnace at a temperature of 450°C. After 2h, the supported TiO 2 -γ-Al 2 o 3 (spare).

[0018] 2. Loaded TiO 2 -γ-Al 2 o 3 Preparation of light-cured water-based anti-fog self-cleaning coating:

[0019] Add 10.2g of IPDI to a dry three-neck flask equipped with a stirrer and a thermometer, add 8.74g of PPG400 and 0.03g of TBDL to the dropping funnel and shake well, the dropping speed is 3s / drop, about 2h to finish, the reaction is carried out in a constant temperature oil bath , the temperature was controlled at 40°C, and the PPG400 was dripped and reacted for 2 ...

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PUM

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Abstract

The invention relates to a preparation method of supported nano-doped photocuring water-based antifogging self-cleaning paint. The method comprises the following steps of: preparing a photocuring water-based polyurethane acrylate prepolymer by an acetone method; then, adding triethylamine to neutralize; adding water to emulsify to obtain a photocuring water-based polyurethane acrylate emulsion; and finally, introducing TiO2-gamm-Al2O3 in different contents to synthesize an organic-inorganic compound emulsion. The inorganic compound emulsion has better compatibility in photocuring water-based polyurethane. The paint has better performances in antifogging self-cleaning, antibacterial performance, water resistance, weather fastness, scratch resistance, heat stability, abrasive resistance, adhesive force and the like, and has good application prospect in the field of surface coatings such as glass and solar plates.

Description

technical field [0001] The invention discloses a preparation method of a loaded nano-doped light-cured water-based anti-fog self-cleaning coating, which belongs to the field of ultraviolet light-curable resins. Background technique [0002] At present, with the strengthening of people's awareness of environmental protection, the research on UV-curable water-based polyurethane acrylate instead of general polyurethane is becoming more and more popular and favored by many researchers. In the existing reports on the synthesis of water-based polyurethane acrylate, emulsions are generally used These methods are mostly suitable for the polymerization of isocyanates with low activity, but the post-treatment is complicated, especially the bulk method system has high viscosity, the temperature is not easy to control, and it is easy to produce gels and other phenomena. However, the water-based UV-curable polyurethane acrylate synthesized by the acetone method has a simple process, easy...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/14C09D7/12
Inventor 姚伯龙俞如越侯志成关晓
Owner JIANGNAN UNIV