Environment-friendly flame retardant and intumescent fireproof coating prepared therefrom

An environmentally friendly, flame retardant technology, applied in fireproof coatings, coatings, fibrous fillers, etc., can solve the problems of poor carbon quality, low loose carbon layer strength, low flame retardant efficiency, etc., to improve durability. performance, increase the degree of graphitization, and reduce the effect of surface polarity

Active Publication Date: 2020-06-05
WUHAN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The main purpose of the present invention is to use tetrabutyl ammonium hydroxide and phosphoric acid to peel off zirconium phosphate to expose the gap between the layers of zirconium phosphate in order to solve the problems of poor charring quality, low loose strength of charcoal layer and low flame retardant efficiency of the existing flame retardant coating system. Hydroxyl group, and then use furfurylamine to coat zircon

Method used

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  • Environment-friendly flame retardant and intumescent fireproof coating prepared therefrom
  • Environment-friendly flame retardant and intumescent fireproof coating prepared therefrom

Examples

Experimental program
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Effect test

Embodiment 1

[0039] A kind of environmentally friendly flame retardant, its preparation method comprises the steps:

[0040] 1) Strip zirconium phosphate: In a 500ml four-necked flask, disperse 0.01mol zirconium phosphate and 300ml deionized water through mechanical stirring and ultrasonic action. Add butyl ammonium hydroxide solution (TBA concentration is 0.1mol / L) to the four-neck flask dropwise at a constant speed within 30min, continue to ultrasonically stir for 2h after dripping, then add 20ml of concentrated phosphoric acid with a concentration of 14.5mol / L within 30min Add it dropwise to the flask at a constant speed. After the reaction (2h), the mixed solution is centrifuged for solid-liquid separation to obtain a translucent gel precipitate and wash it with distilled water;

[0041] 2) Furfurylamine-coated zirconium phosphate: the product obtained in step 1) and 0.06mol furfurylamine were mechanically stirred at 40° C. for 24 hours, washed by centrifugation, and vacuum-dried at 80...

Embodiment 2

[0044] A kind of environmentally friendly flame retardant, its preparation method comprises the steps:

[0045] 1) Strip zirconium phosphate: In a 500ml four-necked flask, disperse 0.01mol zirconium phosphate and 300ml deionized water through mechanical stirring and ultrasonic action. Add butylammonium hydroxide solution (TBA concentration is 0.1mol / L) to the four-neck flask dropwise within 30min at a constant speed, continue to react for 2h after dropping, and then drop 20ml of concentrated phosphoric acid with a concentration of 14.5mol / L within 30min at a constant speed Add in the flask, after the reaction finishes (2h), carry out solid-liquid separation by centrifugation of mixed solution, obtain translucent gel precipitation and wash with distilled water;

[0046] 2) Furfurylamine-coated zirconium phosphate: the product obtained in step 1) and 0.03mol furfurylamine were mechanically stirred at 40°C for 24 hours, washed by centrifugation, and vacuum-dried at 80°C to obtain...

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Abstract

The invention discloses an environment-friendly flame retardant. The flame retardant is prepared by firstly utilizing tetrabutyl ammonium hydroxide and phosphoric acid to peel zirconium phosphate andthen utilizing furfuryl amine to coat zirconium phosphate. The flame retardant can effectively solve the problems that zirconium phosphate is easy to agglomerate and the like, and can play a synergistic flame-retardant role with an intumescent flame-retardant system in a fireproof coating. When the flame retardant is used to prepare an intumescent fire retardant coating, the film-forming property,the fire resistance, the durability and the like of the obtained fire retardant coating can be remarkably improved. The obtained flame retardant integrates flame retardance, smoke suppression and enhancement functions and is low in halogen-free cost, good in char forming property, high in carbon layer strength, environmentally friendly and wide in applicability, and the related preparation methodis simple in process, mild in reaction conditions and suitable for application and popularization.

Description

technical field [0001] The invention belongs to the technical field of flame retardant materials, and in particular relates to an environment-friendly flame retardant and an expansive fireproof coating prepared by using the flame retardant. Background technique [0002] Fire retardant coating is a kind of substance that can act on the surface of flammable materials to improve its fire resistance, slow down the burning rate or prevent burning for a certain period of time. Intumescent fireproof coatings for steel structures are prepared with polymer water-based emulsions, polymer resins, etc. as the matrix, adding an intumescent fireproof system composed of acid sources, gas sources, and carbon sources, as well as fillers and additives. These components react at high temperature, dehydrate and carbonize to form a uniform and dense honeycomb-shaped expanded carbon layer, which isolates air and heat transfer, thereby achieving the effect of fire protection and heat insulation. ...

Claims

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Application Information

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IPC IPC(8): C09C1/00C09C3/08C09C3/00C09C3/04C09D151/00C09D5/18
CPCC08K2003/328C08L2201/02C09C1/00C09C3/003C09C3/006C09C3/043C09C3/08C09D5/185C09D151/003C08K9/10C08K9/04C08K3/32C08K5/053C08K5/34922C08K13/06
Inventor 刘治田王成霍思奇张旗
Owner WUHAN INSTITUTE OF TECHNOLOGY
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