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Method of preparing transparent and decorated fireproof coating with two components

A fire-resistant coating, a two-component technology, applied in the direction of fire-resistant coatings, coatings, phosphorus organic compounds, etc., can solve the problems of cracking of the coating film, poor flexibility of the coating film, etc., and achieve relaxed reaction conditions, low cost, and good flexibility Effect

Inactive Publication Date: 2012-10-24
TONGJI UNIV
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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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  • Method of preparing transparent and decorated fireproof coating with two components

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) Dissolve 50g of polyphosphoric acid in 200ml of dioxane, heat and stir until the polyphosphoric acid is evenly dissolved. 25 g of pentaerythritol was added to the system, and the temperature was raised to 80° C. for reaction. After 6 hours of reaction, the solvent was evaporated using a rotary evaporator. The product was grafted with 25g PEG200 under the reaction condition of 100°C for 8 hours to obtain polyethylene glycol grafted polyphosphate;

[0025] (2) Make a 50% aqueous solution of the prepared grafted polyphosphate, weigh 400g, and blend and stir for 30 minutes. After the stirring is completed, the bubbles in the paint will naturally dissipate, and it will be a two-component transparent finish. type fire retardant coating.

Embodiment 2

[0027] (1) Dissolve 40g of polyphosphoric acid in 300ml of tetrahydrofuran, heat and stir until the polyphosphoric acid is evenly dissolved. 40 g of pentaerythritol was added to the system, and the temperature was raised to 90° C. for reaction. After 10 h of reaction, the solvent was evaporated using a rotary evaporator. The product was grafted with 20g PEG300 under the reaction condition of 120°C for 12 hours to obtain polyethylene glycol grafted polyphosphate;

[0028] (2) Make the prepared grafted polyphosphate into 50% aqueous solution, weigh 400g of water-based hexamethylol melamine formaldehyde resin, blend and stir for 30min, and wait for the bubbles in the paint to dissipate naturally after stirring. It is a two-component transparent finish type fire retardant coating.

Embodiment 3

[0030] (1) Dissolve 45g of polyphosphoric acid in 250ml of dimethylformamide, heat and stir until the polyphosphoric acid is evenly dissolved. 32.5 g of pentaerythritol was added to the system, and the temperature was raised to 85° C. for reaction. After 8 hours of reaction, the solvent was evaporated using a rotary evaporator. The product was grafted with 22.5g PEG400 under the reaction condition of 110°C for 10 hours to obtain polyethylene glycol grafted polyphosphate;

[0031] (2) Make the prepared grafted polyphosphate into 50% aqueous solution, weigh 400g of water-based hexamethylol melamine formaldehyde resin, blend and stir for 30min, and wait for the bubbles in the paint to dissipate naturally after stirring. It is a two-component transparent finish type fire retardant coating.

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Abstract

The invention relates to a method of preparing a transparent and decorated fireproof coating with two components. The method comprises steps of: preparing a polyethylene-glycol-grafted polyphosphate by using polyphosphoric acid, pentaerythritol and polyethylene glycol through a solution synthesis method; preparing an aqueous solution or an ethanol solution with a certain concentration of the grafted polyphosphate, and blending the solution with an aqueous amino resin by stirring to get the transparent and decorated fireproof coating with two components. According to the present invention, the preparation method is simple and feasible, the cost is low, and the prepared transparent and decorated fireproof coating with two components can greatly improve flexibility of a coating film on the basis of ensuring excellent fireproof property of the coating.

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): C09D161/32C09D161/28C09D161/24C09D5/18C08G65/48C07F9/09
Inventor 王国建呼翔黄演
Owner TONGJI UNIV
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