Nano zirconium phosphate-based flame-retardant bacteriostatic agent, and intumescent fireproof bacteriostatic coating prepared therefrom

A zirconium phosphate-based, bacteriostatic agent technology, which is applied in fire-resistant coatings, anti-fouling/underwater coatings, paints containing biocides, etc., can solve the problems of low flame retardant efficiency, poor char formation quality, loose charcoal layer, etc. , to achieve the effects of reducing surface polarity, good chemical stability, and excellent char formation

Active Publication Date: 2021-12-31
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 provide a nano-zirconium phosphate-based flame retardant and bacteriostatic agent and an intumescent fire retardant prepared by using it to solve the problems of poor charring quality, loose charcoal layer and low flame retardant efficiency of existing flame retardants. Bacterial coating; use aminoimidazole and chlorpropionaldehyde to modify the peeled zirconium phosphate nanosheets to synthesize a flame-retardant and antibacterial agent based on nano-zirconium phosphate, and use the Schiff base group formed by the reaction of aminoimidazole and chlorpropionaldehyde As well as the unique synergistic antibacterial effect of zirconium phosphate and imidazole, the antibacterial performance of the fireproof coating is significantly improved; at the same time, the grafted imidazole group and zirconium phosphate have an excellent flame retardant synergistic effect, which can effectively improve the fireproof performance of the fireproof coating; The flame retardant integrates flame retardant, smoke suppression and antibacterial properties and enhanced functions, and involves a simple preparation method, low cost, environmental protection, wide applicability, and is suitable for popularization and application

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  • Nano zirconium phosphate-based flame-retardant bacteriostatic agent, and intumescent fireproof bacteriostatic coating prepared therefrom
  • Nano zirconium phosphate-based flame-retardant bacteriostatic agent, and intumescent fireproof bacteriostatic coating prepared therefrom

Examples

Experimental program
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Effect test

Embodiment 1

[0043] A kind of nano-zirconium phosphate-based flame retardant antibacterial agent, its preparation method comprises the steps:

[0044] 1) Stripping zirconium phosphate (ZrP): In a 500ml four-necked flask, 0.01mol zirconium phosphate and 300ml deionized water were fully dispersed by mechanical stirring and ultrasonication. This process lasted for 30min and kept the temperature at 5°C, then Add 100ml of tetrabutylammonium hydroxide solution (TBA concentration is 0.1mol / L) dropwise into the four-neck flask at a constant speed within 30min. Add it dropwise to the flask at a constant speed within 30 minutes. After the reaction (2 hours), the mixed solution is centrifuged for solid-liquid separation to obtain a translucent gel precipitate and wash it with distilled water;

[0045] 2) Grafting of chlorpropionaldehyde: disperse the product obtained in step 1) and 0.01mol of chlorpropionaldehyde in DMSO and react with mechanical stirring at 50°C for 16 hours, centrifuge and wash, an...

Embodiment 2

[0048] A kind of nano-zirconium phosphate-based flame retardant antibacterial agent, its preparation method comprises the steps:

[0049] 1) Stripping zirconium phosphate (ZrP): In a 500ml four-necked flask, 0.01mol zirconium phosphate and 300ml deionized water were fully dispersed by mechanical stirring and ultrasonication. This process lasted for 30min and kept the temperature at 5°C, then Add 100ml of tetrabutylammonium hydroxide solution (TBA concentration is 0.1mol / L) dropwise into the four-neck flask at a constant speed within 30min. Add it dropwise to the flask at a constant speed within 30 minutes. After the reaction (2 hours), the mixed solution is centrifuged for solid-liquid separation to obtain a translucent gel precipitate and wash it with distilled water;

[0050] 2) Grafting of chlorpropionaldehyde: disperse the product obtained in step 1) and 0.03mol of chlorpropionaldehyde in DMSO for mechanical stirring at 80°C for 18 hours, centrifuge and wash, and dry to ob...

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Abstract

The invention discloses a nano zirconium phosphate-based flame-retardant bacteriostatic agent. The nano zirconium phosphate-based flame-retardant bacteriostatic agent is prepared by performing intercalation stripping on zirconium phosphate and modifying the zirconium phosphate by using aminoimidazole and chloropropionaldehyde, so the problems that the zirconium phosphate is easy to agglomerate and the like are effectively solved, and the nano zirconium phosphate-based flame-retardant bacteriostatic agent can play a synergistic flame-retardant role with an intumescent flame-retardant system in a fireproof coating; the film-forming property, the fire resistance and the durability of the obtained fireproof coating can be obviously improved; and a Schiff base and imidazole loaded on the surface of a nano zirconium phosphate sheet layer can be more uniformly dispersed in coating components to play a role in barrier and bacteriostasis, and the Schiff base, nano zirconium phosphate and imidazole in the flame retardant can effectively improve the bacteriostasis performance of the fireproof coating. The flame retardant integrates the functions of flame retardance, smoke suppression, bacteriostasis and enhancement, and is halogen-free, low in cost, good in char forming property, environmentally friendly and wide in applicability, and the related preparation method is simple in process, simple in reaction condition and suitable for popularization and application.

Description

technical field [0001] The invention belongs to the technical field of flame-retardant and antibacterial materials, and in particular relates to a nano-zirconium phosphate-based flame-retardant and antibacterial agent and an intumescent fire-proof and antibacterial coating prepared therefrom. Background technique [0002] Intumescent fire retardant coating belongs to a kind of material that is coated on the surface of the substrate to improve its fire resistance and slow down the burning rate. It mainly uses polymer water-based emulsion, polymer resin, etc. It is prepared from an intumescent fireproof system composed of equal components, as well as functional fillers and corresponding additives. These components react at high temperature to produce a synergistic effect, dehydration and carbonization to form a uniform and dense honeycomb-shaped expanded carbon layer, which can effectively isolate air and heat transfer, thereby achieving excellent fire and heat insulation effe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D151/00C09D5/18C09D5/14
CPCC09D151/003C09D5/185C09D5/14C08K2003/323C08K2003/2241C08K2003/328C08K2201/011C08K3/32C08K5/053C08K5/34922C08K3/22C08K9/04
Inventor 刘治田王成霍思奇
Owner WUHAN INSTITUTE OF TECHNOLOGY
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