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High-solid-content aqueous ultraviolet curing transparent heat-insulation paint and preparation method thereof

A high-solid content, heat-insulating coating technology, used in polyurea/polyurethane coatings, coatings, etc., can solve the problems of poor water resistance, poor leveling, poor mechanical properties, etc., to improve dispersion and stability, good water resistance the effect of improving the hardness

Inactive Publication Date: 2016-12-21
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problems to be solved by the present invention are for problems such as oil-based coatings with high toxicity, flammability, poor use safety, and environmental pollution, as well as water-based UV coatings with low solid content, slow drying speed, high viscosity, poor mechanical properties, poor weather resistance, and poor water resistance. , poor leveling, poor yellowing resistance, etc., and a high-solid content water-based UV-curable transparent heat-insulating coating is proposed. Another purpose of the present invention is to provide the above-mentioned high-solid-content water-based UV-curable transparent heat-insulating coating. Preparation

Method used

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  • High-solid-content aqueous ultraviolet curing transparent heat-insulation paint and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Add 40 g of polyester polyol (Jiangsu Jintan Lihe Adhesive Factory, 108-I) to a reactor equipped with a stirrer, a thermometer, and a reflux condenser, vacuumize and dehydrate at 100°C for 1 hour, cool down to room temperature, and add isofluorine 10g of ketone diisocyanate, 6.4g of hexamethylene diisocyanate, heated to 70°C, reacted for 1h, added 1.6g of dimethylol butyric acid, 1.3g of ethylene glycol, 0.03g of dibutyltin dilaurate, and stirred Continue to react for 4h, add 18.6g of pentaerythritol triacrylate, continue to react for 1h to obtain a prepolymer, then cool down to room temperature, add 0.75g of triethylamine to neutralize the prepolymer into a salt; Add 86 g of deionized water under shearing, add 0.74 g of ethylenediamine for chain extension reaction for 30 minutes, and discharge to obtain a high-solid content aqueous polyurethane dispersion. The main performance indicators are: solid content of 48%, and viscosity of 21 mPa.s.

[0027] In a disperser equi...

Embodiment 2

[0029] In a reactor equipped with a stirrer, a thermometer, and a reflux condenser, add 40 g of polyester polyol (Shandong Huacheng Hi-Tech Adhesive Co., Ltd., AD-60), vacuumize and dehydrate at 105°C for 1.5 h, cool down to room temperature, and add benzene Dimethylene diisocyanate 14.2g, heat up to 75°C, react for 1.5h, add 2.3g of dimethylolpropionic acid, 0.5g of diethylene glycol, 0.1g of stannous octoate, continue to react for 3h under stirring, add 9.2 pentaerythritol Trimethacrylate, continue to react for 2 hours to obtain a prepolymer, then cool down to room temperature, add 1.7g triethylamine to neutralize the prepolymer into a salt; discharge it into a disperser, add deionized 70g of water was added, and 1.7g of diethylenetriamine was added for chain extension reaction for 20 minutes to obtain a high-solid content aqueous polyurethane dispersion. The main performance indicators were: the solid content was 50%, and the viscosity was 43mPa.s.

[0030] In a disperser e...

Embodiment 3

[0032] In a reactor equipped with a stirrer, a thermometer, and a reflux condenser, 40 g of polyester polyol (Zhejiang Huafon New Material Co., Ltd., PA-1225T) was added, vacuum dehydrated at 110°C for 2 hours, cooled to room temperature, and 4 , 27.4g of 4'-dicyclohexylmethane diisocyanate, heated to 80°C, reacted for 1h, added 3g of dimethylolpropionic acid, 0.9g of 1,4-butanediol, 0.19g of dibutyltin dilaurate, and stirred The reaction was continued for 2 hours, 15.6g of pentaerythritol triacrylate was added, and the reaction was continued for 2 hours to obtain a prepolymer, then cooled to room temperature, and 2.4g of triethylamine was added to neutralize the prepolymer to form a salt; Add 87g of deionized water under high-speed shearing, and add 4.9g of tetraethylenepentamine for chain extension reaction for 10 minutes to obtain a high-solid content aqueous polyurethane dispersion. The main performance indicators are: solid content of 52%, viscosity of 98mPa.s .

[0033]...

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Abstract

The invention relates to high-solid-content aqueous ultraviolet curing transparent heat-insulation paint and a preparation method thereof. The high-solid-content aqueous ultraviolet curing transparent heat-insulation paint is characterized by being prepared from the following raw material components in parts by mass: 100 parts of high-solid-content aqueous polyurethane dispersoid, 0.2-0.5 part of a water-soluble photoinitiator, 1-5 parts of a nano function element, 0.05-0.2 part of a flatting agent, and 0.1-0.2 part of an antifoaming agent, and the components are uniformly mixed, so that the high-solid-content aqueous ultraviolet curing transparent heat-insulation paint is prepared. The main property indexes of the high-solid-content aqueous ultraviolet curing transparent heat-insulation paint are as follows: the mass solid content is 48-52%, and the stickiness is 20-100mPa.s. The paint has the advantages of being non-toxic, incombustible, safe to use, resistant to yellowing, thermal-insulation, good in light permeability and the like, and can be used in occasions of curtain wall glass for buildings, automotive window glass and the like.

Description

technical field [0001] The invention relates to a heat-insulating coating and a preparation method thereof, in particular to a high-solid-content water-based ultraviolet-curable transparent heat-insulating coating and a preparation method thereof. Background technique [0002] Nano-transparent heat-insulating coating is a functional coating developed in the past ten years. Because of its high visible light transmittance and good energy-saving and heat-insulating effects, it can be applied to building curtain wall glass and automobile window glass. More and more attention. Antimony-doped tin dioxide, also called antimony tin oxide (ATO), is a new type of multifunctional nanomaterial. Absorption barrier materials and other fields have been widely used. [0003] Water-based UV coatings inherit and develop the characteristics of traditional UV coatings and water-based coatings. They have the advantages of safety and environmental protection, energy saving and high efficiency, ...

Claims

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Application Information

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IPC IPC(8): C09D175/14C09D7/12C08G18/67C08G18/66C08G18/42C08G18/34C08G18/08C08G18/32
CPCC09D175/14C08G18/0823C08G18/3206C08G18/3228C08G18/348C08G18/42C08G18/672C08K3/2279C08L2201/10C08K2201/011C08G18/6659C08L83/04
Inventor 项尚林吴凯华
Owner NANJING UNIV OF TECH
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