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Energy-saving insulated flame-retardant water-proof corrosion-proof functional coating and preparation method thereof

A functional coating and coating technology, applied in anti-corrosion coatings, polyurea/polyurethane coatings, coatings, etc., can solve the problems of polluted environment, poor chemical resistance, single function, etc., achieve good compatibility, excellent performance, increase The effect of thermal insulation

Active Publication Date: 2012-10-24
江苏瑞丰科技实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the problems of poor resistance to chemical media, pollute the environment, and single function of existing thermal insulation coatings, and provide an energy-saving new thermal insulation coating with the advantages of low smoke, low toxicity, flame retardancy, waterproof, and chemical media resistance. Flame-retardant, waterproof and corrosion-resistant functional coatings

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] In a reactor equipped with a stirrer, a thermometer, and a reflux condenser, add 40 g of polyether polyol (molecular weight: 2300), vacuumize and dehydrate at 110°C for 1 hour, cool down to below 50°C, and add 18g of isophorone diisocyanate , heated to 80°C, reacted for 2 hours, added 3 g of dimethylol propionic acid, 1.2 g of 1,4-butanediol, 0.3 g of trimethylol propane, and 0.12 g of stannous octoate, and continued to react for 2 hours under stirring , during the reaction process, the viscosity of the reactant is controlled below 4000mPa.s by adding acetone to obtain a prepolymer, and then the temperature is lowered to about 40°C, and 2g of triethylamine is added to neutralize the prepolymer to form a salt to obtain a prepolymer; prepolymer The material is discharged into a disperser, 117 g of deionized water is added under high-speed shearing, and 90% of the volume of acetone is evaporated to obtain an aqueous polyurethane dispersion. Its properties are as follows: s...

Embodiment 2

[0025] In a reactor equipped with a stirrer, a thermometer, and a reflux condenser, add 40 g of polyether polyol (molecular weight: 2100), vacuumize and dehydrate at 105°C for 1 hour, cool down to below 50°C, and add isophorone diisocyanate 12.5 g, 6.2g of 1,6-hexamethylene diisocyanate, heat up to 80°C, react for 1 hour, add 2.3g of dimethylol propionic acid, 2.3g of 1,4-butanediol, 0.3g of glycerin, dibutyltin dilaurate 0.13g, continue to react for 3 hours under stirring, during the reaction, add acetone to control the viscosity of the reactant below 4000mPa. Neutralize and form a salt to obtain a prepolymer; the prepolymer is discharged into a disperser, and 125 g of deionized water is added under high-speed shearing, and 90% of the volume of acetone is evaporated to obtain an aqueous polyurethane dispersion. Its properties are as follows: solid content: 32.3%; pH value: 7.1; viscosity (coating -4 cups / 25°C): 17 seconds.

Embodiment 3

[0027] In a reactor equipped with a stirrer, a thermometer and a reflux condenser, add 40g of polyether polyol (molecular weight: 1800), dehydrate under vacuum at 105°C for 1 hour, cool down to below 50°C and add 18g of dicyclohexylmethane diisocyanate , heated to 75°C, reacted for 1 hour, added 3.5g of dimethylolpropionic acid, 1.7g of 1,4-butanediol, 0.2g of stannous octoate, and continued to react for 3 hours under stirring to obtain a prepolymer. During the reaction process, the viscosity of the reactant is controlled below 4000mPa.s by adding acetone, then the temperature is lowered to about 35°C, and 3.2g of triethylamine is added to neutralize the prepolymer to form a salt; 101 g of deionized water was added, and 90% volume of acetone was distilled off to obtain an aqueous polyurethane dispersion. Its properties are as follows: solid content: 37.3%; PH value: 7.2; viscosity (coating -4 cups / 25°C): 18 seconds.

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Abstract

The invention discloses an energy-saving insulated flame-retardant water-proof corrosion-proof functional coating and a preparation method thereof. The functional coating is prepared from the following raw materials: an aqueous polyurethane dispersion, a flame retardant, a flame-retardant antismoke agent, a hollow glass bead, a wetting dispersant, an anti-settling agent, a thickening agent, water, a leveling agent and a de-foaming agent, has the functions of heat preservation, flame retarding, water prevention and corrosion resistance and the like, is unlikely to become yellow when in use, is safe and reliable, is excellent in performance, is good in compatibility with pigment dyestuff, is unlikely to damage the coated surface, is easy to modify, is nontoxic, is safe to use, does not pollute environment and is suitable for the fields of inner and outer wall coating, pipeline coating, wood furniture coating, decoration coating, chemical corrosion-proof coating and the like.

Description

technical field [0001] The invention belongs to the field of chemical industry, and in particular relates to a heat-insulating, flame-retardant, waterproof and corrosion-resistant functional coating and a preparation method thereof. Background technique [0002] Energy conservation and emission reduction has become a basic national policy of our country, and building energy conservation is an important part of it. In the energy-saving design of the building envelope, with the wide application of external wall insulation systems, more stringent requirements have been put forward for the decorative materials. Functional finishing coatings with good compatibility and matching of thermal insulation systems, excellent water resistance and breathability, good stain resistance and durability are favored. [0003] However, the existing functional finishing coatings do not relate to the key properties of the finishing coatings such as flame retardancy and chemical resistance. There...

Claims

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Application Information

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IPC IPC(8): C09D175/08C09D7/12C09D5/08C08G18/76C08G18/75C08G18/73C08G18/66C08G18/48C08G18/32C08G18/10
Inventor 杜峰项尚林
Owner 江苏瑞丰科技实业有限公司
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