Bicomponent transparent finishing fire retardant coating and preparation method thereof

A fire retardant coating, two-component technology, applied in the direction of fire retardant coatings, coatings, etc., can solve the problems of poor coating film flexibility, coating film cracking, etc., and achieve the effects of low cost, loose reaction conditions, and simple and easy preparation methods.

Active Publication Date: 2012-10-10
DONGGUAN DAXING CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

One of the major factors limiting the practical application of transparent decorative fire retardant coatings is that the flexibility of the coating film is too poor, and the coating film will crack soon after it is applied to the substrate and cured.

Method used

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  • Bicomponent transparent finishing fire retardant coating and preparation method thereof
  • Bicomponent transparent finishing fire retardant coating and preparation method thereof
  • Bicomponent transparent finishing fire retardant coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] (1) Add 25g of pentaerythritol, 50g of polyphosphoric acid, and 25g of PEG200 into the reaction kettle, and heat up to melt the reactants. After the reactant is completely melted, start stirring to react, the reaction temperature is 100°C, and the reaction time is 4h, to obtain grafted polyphosphate; the prepared graft polyphosphate is made into a 50% aqueous solution, which is formazan Component.

[0035] (2) Weigh 400g of water-based hexamethylolmelamine formaldehyde resin (synthesized in the laboratory), which is component B.

[0036] (3) Blend and stir the above two components A and B for 30 minutes. After the stirring is completed, wait for the air bubbles in the coating to dissipate naturally, which is a two-component transparent decorative fireproof coating.

Embodiment 2

[0038] (1) Add 40g of pentaerythritol, 40g of polyphosphoric acid, and 20g of PEG300 into the reaction kettle, and heat up to melt the reactants. After the reactants are completely melted, start stirring to react, the reaction temperature is 120°C, and the reaction time is 5 hours to obtain grafted polyphosphate; the obtained graft polyphosphate is made into a 50% aqueous solution, which is formazan Component.

[0039] (2) Weigh 400g of water-based hexamethylolmelamine formaldehyde resin (synthesized in the laboratory), which is component B.

[0040] (3) Blend and stir the above two components A and B for 30 minutes. After the stirring is completed, wait for the air bubbles in the coating to dissipate naturally, which is a two-component transparent decorative fireproof coating.

Embodiment 3

[0042] (1) Add 32.5g of pentaerythritol, 45g of polyphosphoric acid, and 22.5g of PEG400 into the reaction kettle, and heat up to melt the reactants. After the reactants are completely melted, start stirring to react, and the reaction temperature is 110°C.

[0043] The reaction time is 4.5h, and the grafted polyphosphate is obtained; the prepared grafted polyphosphate is made into a 50% aqueous solution, which is the first component.

[0044] (2) Weigh 400g of water-based hexamethylolmelamine formaldehyde resin (synthesized in the laboratory), which is component B.

[0045] (3) Blend and stir the above two components A and B for 30 minutes. After the stirring is completed, wait for the air bubbles in the coating to dissipate naturally, which is a two-component transparent decorative fireproof coating.

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PUM

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Abstract

The invention relates to a bicomponent transparent finishing fire retardant coating and a preparation method thereof. The preparation method includes steps of using polyphosphoric acid, pentaerythritol and polyethylene glycol to obtain polyethylene glycol grafted polyphosphate by means of a fusion synthesis method and mixing and blending a component A and a component B to obtain the bicomponent transparent finishing fire retardant coating, wherein the component A is an aqueous solution or an absolute ethyl alcohol solution of the grafted polyphosphate, and the component B is an aqueous amino resin. According to the obtained bicomponent transparent finishing fire retardant coating, the flexibility of a coating film is greatly improved on the basis of a good fire retardant performance of the coating, and the preparation method of the bicomponent transparent finishing fire retardant coating is easy and simple to operate.

Description

technical field [0001] The invention relates to a preparation method of a two-component transparent finish type fireproof paint. Background technique [0002] Coating decorative fire retardant paint is currently the best means of wood fire prevention. When wood is exposed to fire, it can achieve the purpose of prolonging the fire resistance of wood and slowing down the spread of fire, so that there is enough time for fighting and reducing the loss caused by fire as much as possible. Decorative fire retardant coatings are generally divided into two types: intumescent and non-expandable. Since the intumescent fireproof system can rapidly foam to form a porous carbonized layer tens or even hundreds of times the thickness of the original coating when it is exposed to fire, which effectively blocks the transfer of heat and isolates the substrate from the air. The fireproof performance is better than that of the non-expandable system. Therefore, it has been extensively researched...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D161/28C09D161/32C09D161/24C09D185/02C09D5/18C08G79/04
Inventor 何晓明王国建呼翔
Owner DONGGUAN DAXING CHEM
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