A kind of nano-zirconium phosphate-based flame retardant antibacterial agent and its preparation method and prepared intumescent fireproof antibacterial coating

A zirconium phosphate-based, bacteriostatic technology, which is applied in fire-retardant coatings, antifouling/underwater coatings, and biocide-containing paints, etc., can solve problems such as low flame retardant efficiency, loose carbon layer, and poor carbon quality. , to achieve the effect of reducing surface polarity, excellent carbon formation, and good chemical stability

Active Publication Date: 2022-05-10
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

Method used

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Examples

Experimental program
Comparison scheme
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-neck flask, 0.01mol zirconium phosphate and 300ml deionized water were fully dispersed by mechanical stirring and ultrasonic action. 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-necked flask within 30min at a constant speed. 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 chlorpropionaldehyde: Disperse the product obtained in step 1) with 0.01mol chlorpropionaldehyde in DMSO and react with mechanical stirring at 50°C for 16 hours. After centrifugation and w...

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-neck flask, 0.01mol zirconium phosphate and 300ml deionized water were fully dispersed by mechanical stirring and ultrasonic action. 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-necked flask within 30min at a constant speed. 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 ...

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Abstract

The invention discloses a nano-zirconium phosphate-based flame-retardant and antibacterial agent. Firstly, zirconium phosphate is intercalated and stripped, and it is modified with aminoimidazole and chlorpropionaldehyde to prepare a flame-retardant and antibacterial agent based on nano-zirconium phosphate. It can effectively solve the problem of easy agglomeration of zirconium phosphate, and can play a synergistic flame retardant effect with the intumescent flame retardant system in the fireproof coating; and can significantly improve the film-forming, fire resistance and durability of the fireproof coating obtained; The Schiff base and imidazole loaded on the surface of the zirconium layer can be more uniformly dispersed in the coating components, and play a barrier antibacterial effect. The Schiff base in the flame retardant, nano-zirconium phosphate and imidazole can effectively improve the antibacterial effect of the fireproof coating. performance. The flame retardant obtained in the present invention integrates flame retardancy, smoke suppression and bacteriostasis, and enhancement functions, and has low halogen-free cost, good char formation, environmental friendliness, wide applicability, and the preparation method involved is simple in process and simple in reaction conditions. Suitable for promoting applications.

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 Patents(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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