Microencapsulated water-based fire retardant coating and preparation method thereof

A technology of microencapsulation and fireproof coating, applied in fireproof coating, anti-corrosion coating, polyurea/polyurethane coating, etc., can solve the problems of poor fireproof performance and poor durability, reduce hygroscopicity and water solubility, increase Durability, the effect of eliminating the chance of contact

Active Publication Date: 2016-09-07
湖北合聚高分子材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a microencapsulated water-based fireproof coating for the existing problems of poor durability and fireproof performance of the existing fireproof coating, whi

Method used

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  • Microencapsulated water-based fire retardant coating and preparation method thereof

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Embodiment 1

[0029]A microencapsulated water-based fireproof coating, each component and its mass percentage are: 25g of epoxy-modified water-based polyurethane emulsion, 40g of melamine formaldehyde resin microencapsulated ammonium polyphosphate, 20g of polyurethane microencapsulated calcium carbonate, hydroxyl Ethyl cellulose 1g, dispersant 1g, defoamer 1g, antifungal agent 2g, n-octanol 1g, deionized water 9g, the microencapsulated water-based fireproof coating is formed by stirring and dispersing the components uniformly.

[0030] The preparation method of the above-mentioned epoxy-modified water-based polyurethane emulsion is as follows: add 30g of polyethylene glycol (molecular weight is 1000) to the 500mL flask equipped with stirrer, thermometer stirring paddle, heat to 110 ℃, dehydration under vacuum and decompression for 1h; Then cool down to 30°C, under the protection of dry nitrogen, add 8.352g of toluene-2,4-diisocyanate, dropwise add 0.19g of dibutyltin dilaurate, raise the tem...

Embodiment 2

[0034] A microencapsulated water-based fireproof coating, each component and its mass percentage are: 30g of epoxy-modified water-based polyurethane emulsion, 35g of melamine-formaldehyde resin microencapsulated ammonium polyphosphate, 20g of polyurethane microencapsulated calcium carbonate, hydroxyl Ethyl cellulose 0.5g, dispersant 0.5g, defoamer 0.5g, antifungal agent 1g, n-octanol 0.5g, deionized water 12g, the microencapsulated water-based fireproof coating is uniformly dispersed by stirring made.

[0035] The preparation method of the above-mentioned epoxy-modified water-based polyurethane emulsion is as follows: add 30 g of polyethylene glycol (molecular weight is 1000) to a 500 mL flask equipped with a stirrer and a thermometer stirring paddle, heat to 120 ° C, and dehydrate under vacuum for 2 h; Then cool down to 35°C, under the protection of dry nitrogen, add 10.44g of toluene-2,4-diisocyanate, dropwise add 0.12g of dibutyltin dilaurate, raise the temperature to 70°C,...

Embodiment 3

[0039] A microencapsulated water-based fireproof coating, the components and their mass percentages are: 35g of epoxy-modified water-based polyurethane emulsion, 30g of melamine-formaldehyde resin microencapsulated ammonium polyphosphate, 15g of polyurethane microencapsulated calcium carbonate, hydroxyl Ethyl cellulose 1g%, dispersant 1g, defoamer 1g, antifungal agent 2g, n-octanol 1g, deionized water 14g, the microencapsulated water-based fireproof coating is formed by stirring and dispersing the components uniformly.

[0040] The preparation method of the above-mentioned epoxy-modified water-based polyurethane emulsion is as follows: add 30g of polyethylene glycol (molecular weight is 1000) to the 500mL flask equipped with stirrer, thermometer stirring paddle, heat to 120 ℃, dehydration under vacuum and decompression for 1h; Then cool down to 40°C, under the protection of dry nitrogen, add 13.572g of toluene-2,4-diisocyanate, dropwise add 0.16g of dibutyltin dilaurate, raise ...

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Abstract

The invention discloses a microencapsulated water-based fire retardant coating. The coating is prepared from an epoxy-modified water-based polyurethane emulsion, melamino-formaldehyde resin microencapsulated ammonium polyphosphate, polyurethane microencapsulated inorganic particles, hydroxyethyl cellulose, a dispersing agent, a defoaming agent, a mildewproof agent, n-octanol and water. According to the microencapsulated water-based fire retardant coating, a carbon source and an air source are subjected to resinification, the total adding amount of fire retardant is reduced, and due to that fact that too much fire retardant is added, physical damage to obtained materials is reduced; microencapsulation treatment is conducted on ammonium polyphosphate, hygroscopicity and water solubility of hydrophilic fire retardant are reduced, migration of APP is blocked, and the durability of the coating is increased; microencapsulation to inorganic filler is achieved, compatibility of the inorganic filler and a high polymer material is enhanced, the defects of being prone to agglomeration and migration are overcome, and the mechanical property of fire retardant composite material is improved; the obtained coating has the advantages of being green, environmentally friendly, efficiency, durable, stable, attractive and the like, and a related preparation method is simple and suitable for application and popularization.

Description

technical field [0001] The invention belongs to the field of coatings, and in particular relates to a microencapsulated water-based fireproof coating and a preparation method thereof. Background technique [0002] With the wide application of steel in the construction industry, its fire protection issues are increasingly concerned. Steel is a good conductor of heat, with higher thermal conductivity and rapid heat transfer when the temperature rises or encounters fire. On the one hand, the temperature rise causes the steel structure to expand, causing the component to elongate, or the uneven heating on both sides causes the component to bend, resulting in displacement or restraint; on the other hand, the mechanical strength of the steel decreases with the increase of temperature. When the temperature rises to the steel At the critical temperature, the steel will lose its load-bearing capacity. The critical temperature of general construction steel is 540°C, and the temperat...

Claims

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Application Information

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IPC IPC(8): C09D175/08C09D5/18C09D5/08C08G18/66C08G18/48C08G18/58C08G18/32
CPCC08G18/10C08G18/4833C08L2201/02C09D5/08C09D5/185C09D175/08C08G18/348C08G18/58C08G18/3228C08L1/284C08K9/10C08K2003/323C08K2003/265
Inventor 刘治田代梦琴张旗高翔
Owner 湖北合聚高分子材料有限公司
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