Preparation method and application of Gr/BPA-Si nano hybrid material and fireproof coating

A technology of nano-hybrid materials and fire-resistant coatings, applied in fire-resistant coatings, epoxy resin coatings, coatings, etc., can solve the problems of low carbon layer strength, uneven foaming, poor oxidation resistance, etc., and achieve high carbon layer strength. , The effect of improving the strength of the carbon layer and the strong oxidation resistance

Active Publication Date: 2022-05-13
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, low char strength, poor oxidation resistance and uneven foaming are the main dangerous disadvantages of waterborne epoxy resin intumescent fire protection coatings, thus limiting their application in areas where fire safety is critical

Method used

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  • Preparation method and application of Gr/BPA-Si nano hybrid material and fireproof coating
  • Preparation method and application of Gr/BPA-Si nano hybrid material and fireproof coating
  • Preparation method and application of Gr/BPA-Si nano hybrid material and fireproof coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] A preparation method of a Gr / BPA@Si nano-hybrid material, comprising: S1. dispersing BPA in anhydrous ethanol to obtain a first dispersion; S2. dispersing Gr in the first dispersion to obtain a second dispersion liquid; S3. Under stirring, drop the ethanol solution of oligomeric silsesquioxane into the second dispersion liquid at 75 °C, react for 45 h, and obtain Gr / BPA@Si nano-hybrid material after treatment; BPA and low The mass ratio of polysilsesquioxane was 1:0.4.

[0056] The preparation method of BPA includes: T1. mixing hexagonal boron nitride, aniline monomer and water to obtain a suspension; T2. adding dropwise an aqueous hydrochloric acid solution of ammonium persulfate to the suspension (the concentration of HCl in the aqueous hydrochloric acid solution is 0.05mol / L), and BPA was obtained after 6 hours of reaction at 0 °C; the mass ratio of aniline monomer and ammonium persulfate was 1:2.5; the mass ratio of BPA and hexagonal boron nitride was 1:0.05.

[00...

Embodiment 2

[0059] A preparation method of a Gr / BPA@Si nano-hybrid material, comprising: S1. dispersing BPA in anhydrous ethanol to obtain a first dispersion; S2. dispersing Gr in the first dispersion to obtain a second dispersion liquid; S3. Under stirring, drop the ethanol solution of oligomeric silsesquioxane into the second dispersion liquid at 85 °C, react for 55 h, and obtain Gr / BPA@Si nanohybrid material after treatment; BPA and low The mass ratio of polysilsesquioxane was 1:0.5.

[0060] The preparation method of BPA includes: T1. mixing hexagonal boron nitride, aniline monomer and water to obtain a suspension; T2. adding dropwise an aqueous hydrochloric acid solution of ammonium persulfate to the suspension (the concentration of HCl in the aqueous hydrochloric acid solution is 0.05mol / L), BPA was obtained after 6h reaction at 5°C; the mass ratio of aniline monomer and ammonium persulfate was 1:3.5; the mass ratio of BPA and hexagonal boron nitride was 1:0.15.

[0061] The prepar...

Embodiment 3

[0063] A preparation method of a Gr / BPA@Si nano-hybrid material, comprising: S1. dispersing BPA in anhydrous ethanol to obtain a first dispersion; S2. dispersing Gr in the first dispersion to obtain a second dispersion liquid; S3. Under stirring, drop the ethanol solution of oligomeric silsesquioxane into the second dispersion liquid at 80 °C, react for 48 h, and obtain Gr / BPA@Si nano-hybrid material after treatment; BPA and low The mass ratio of polysilsesquioxane was 1:0.45.

[0064] The preparation method of BPA includes: T1. mixing hexagonal boron nitride, aniline monomer and water to obtain a suspension; T2. adding dropwise an aqueous hydrochloric acid solution of ammonium persulfate to the suspension (the concentration of HCl in the aqueous hydrochloric acid solution is 0.05mol / L), and BPA was obtained after 8 hours of reaction at 3 °C; the mass ratio of aniline monomer and ammonium persulfate was 1:3; the mass ratio of BPA and hexagonal boron nitride was 1:0.1.

[0065...

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Abstract

The embodiment of the invention provides a preparation method and application of a Gr/BPA-coated Si nano hybrid material and a fireproof coating, and the preparation method comprises the following steps: S1, dispersing BPA in a solvent to obtain a first dispersion liquid; s2, dispersing Gr in the first dispersion liquid to obtain a second dispersion liquid; and S3, in a stirring state, dropwise adding an oligomeric silsesquioxane solution into the second dispersion liquid to react, and treating to obtain the Gr/BPA coated Si nano hybrid material. According to the embodiment of the invention, the fire-retardant coating is obtained by uniformly mixing the base material and the Gr/BPA-Si nano hybrid material, so that the carbon layer strength, the oxidation resistance and the foaming uniformity of the intumescent fire-retardant coating are improved; the fireproof coating overcomes the dangerous characteristics that an existing waterborne epoxy resin carbon layer is low in strength, poor in oxidation resistance and uneven in expansion, the obtained nanometer fireproof coating has the advantages of being high in carbon layer strength, high in oxidation resistance and even in expansion, and the fireproof performance is greatly improved.

Description

technical field [0001] The embodiments of the present invention relate to a preparation method and application of a Gr / BPA@Si nano-hybrid material and a fireproof coating. Background technique [0002] Steel structures are widely used in various building structures and are the main form of modern architecture. Although the steel structure has the advantages of light weight and high strength, its poor fire resistance is one of its more prominent shortcomings. In the event of a fire in the building, the steel structure would rapidly heat up to a destruction temperature of 500°C and collapse. Without protection, the fire resistance time of the steel structure is only 15 minutes, which is not conducive to the evacuation and extinguishing of fire. In this case, good protection measures must be taken for the steel structure to address the potential danger of steel fires. [0003] The intumescent fire retardant coating is simple in structure, light in weight, long in fire resist...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D5/18C09D7/65C09D7/61
CPCC09D163/00C09D5/185C09D7/65C09D7/61C08K2201/011C08K2003/385C08L79/02C08L83/04C08K3/38
Inventor 肖国清羊正伟陈春林陈春燕钟菲王明坦邹瑞李蕊利李媛媛
Owner SOUTHWEST PETROLEUM UNIV
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