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A kind of environment-friendly flame retardant and the expansive fireproof coating prepared by using it

An environmentally friendly, flame retardant technology, applied in the direction of fireproof coatings, coatings, fibrous fillers, etc., can solve the problems of poor charcoal quality, low flame retardant efficiency, and low loose strength of the charcoal layer, and achieve environmental friendliness Applicability, improved flame retardant performance, halogen-free and low cost effects

Active Publication Date: 2021-07-13
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 zirconium phosphate to prepare an environment-friendly flame retardant, which is applied to the preparation of intumescent fireproof coatings, which can show good film-forming properties, long fire-resistant time, water resistance and durability , short drying time, environmental friendliness and other advantages, and the preparation process involved is simple, the reaction conditions are mild, suitable for popularization and application

Method used

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  • A kind of environment-friendly flame retardant and the expansive fireproof coating prepared by using it
  • A kind of environment-friendly flame retardant and the expansive fireproof coating prepared by using it

Examples

Experimental program
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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, which is formed by firstly using tetrabutyl ammonium hydroxide and phosphoric acid to strip zirconium phosphate, and then using furfurylamine to coat the zirconium phosphate. While effectively solving the problems of easy agglomeration of zirconium phosphate, the flame retardant can play a synergistic flame retardant effect with the intumescent flame retardant system in the fire retardant coating; when it is applied to the preparation of the intumescent fire retardant coating, the composition of the obtained fire retardant coating can be significantly improved. Membrane properties, fire resistance and durability, etc. The flame retardant obtained in the present invention integrates flame retardancy, smoke suppression and enhancement functions, and has low halogen-free cost, good char formation, high carbon layer strength, environmental friendliness, wide applicability, and the preparation method involved is simple in process and reaction conditions Mild, suitable for general application.

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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Patent Type & Authority Patents(China)
IPC IPC(8): C08K9/04C09C1/00C09C3/08C09C3/00C09C3/04C09D151/00C09D5/18
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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