Sodium zinc phosphate/graphene enhanced waterborne epoxy amino baking varnish

A technology of epoxy amino and water-based epoxy, which is applied in the direction of epoxy resin coatings, coatings, anti-corrosion coatings, etc., can solve the problems of greatly reducing the amount of toxic anti-rust pigments and increasing the amount of anti-rust pigments, and achieves easy processing, Strong emulsifying ability and good compatibility

Active Publication Date: 2021-06-29
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After the mid-1980s, due to the strengthening of regulations, the amount of toxic anti-rust pigments containing lead and hexavalent chromium was greatly reduced (the United States stopped using red lead as anti-rust pigments in 1995), and zinc phosphate pigments The continuous increase and the continuous improvement of performance have further increased the amount of this anti-rust pigment

Method used

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  • Sodium zinc phosphate/graphene enhanced waterborne epoxy amino baking varnish
  • Sodium zinc phosphate/graphene enhanced waterborne epoxy amino baking varnish
  • Sodium zinc phosphate/graphene enhanced waterborne epoxy amino baking varnish

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) Preparation of GO by modified Hummers method:

[0033]Assemble a 250 ml reaction bottle in an ice-water bath, mix 2 parts by weight of graphite powder, 2 parts by weight of sodium nitrate, 30 parts by weight of concentrated sulfuric acid and 10 parts by weight of concentrated nitric acid, and add 8 parts by weight of potassium permanganate within 2 hours , control the temperature not to exceed 5°C, after stirring for 10 hours, remove the ice bath, transfer the reaction bottle to an electromagnetic water bath, and continue electromagnetic stirring at room temperature for 24 hours, then slowly add 100 parts by weight of deionized water, and raise the temperature to After stirring for 20 min at about 98 °C, add 5 parts by weight of hydrogen peroxide to reduce the residual potassium permanganate, so that the solution turns bright yellow, then centrifuge the graphite oxide suspension at a speed of 5000 r / pm, and wash it with deionized water until The separation liquid wa...

Embodiment 2

[0047] (1) Preparation of GO by modified Hummers method:

[0048] Assemble a 250 ml reaction bottle in an ice-water bath, mix 2 parts by weight of graphite powder, 2 parts by weight of sodium nitrate, 30 parts by weight of concentrated sulfuric acid and 10 parts by weight of concentrated nitric acid, and add 10 parts by weight of potassium permanganate within 2 hours , control the temperature not to exceed 5°C, after stirring for 14 hours, remove the ice bath, transfer the reaction bottle to an electromagnetic water bath, and continue electromagnetic stirring at room temperature for 24 hours, then slowly add 100 parts by weight of deionized water, and raise the temperature to After stirring for 20 minutes at about 98 ℃, add 10 parts by weight of hydrogen peroxide to reduce the residual potassium permanganate, so that the solution turns bright yellow, then centrifuge the graphite oxide suspension at 5000 r / pm, and wash it with deionized water until The separation liquid was neu...

Embodiment 3

[0062] (1) Preparation of GO by modified Hummers method:

[0063] Assemble a 250 ml reaction bottle in an ice-water bath, mix 3 parts by weight of graphite powder, 3 parts by weight of sodium nitrate, 40 parts by weight of concentrated sulfuric acid and 20 parts by weight of concentrated nitric acid, and add 10 parts by weight of potassium permanganate within 2 hours , control the temperature not to exceed 5°C, after stirring for 16 hours, remove the ice bath, transfer the reaction bottle to an electromagnetic water bath, and continue electromagnetic stirring at room temperature for 24 hours, then slowly add 100 parts by weight of deionized water, and raise the temperature to After stirring for 20 minutes at about 98 ℃, add 15 parts of hydrogen peroxide to reduce the residual potassium permanganate, so that the solution turns bright yellow, then centrifuge at 5000 r / pm to separate the graphite oxide suspension, and wash it with deionized water until separation Liquid to neutra...

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Abstract

The invention discloses a NaZnPO4/graphene enhanced waterborne epoxy amino baking varnish and a preparation method thereof, wherein the NaZnPO4/graphene enhanced waterborne epoxy amino baking varnish is prepared by the steps: using SDS and SDBS as soft templates, preparing NaZnPO4 by a hydrothermal chemical deposition method, preparing GO by a modified Hummers method, and preparing a NaZnPO4/rGO enhancer by using an epoxy group and a silicon hydroxyl group in a coupling agent to react with the GO and the NaZnPO4; and preparing a water-based epoxy emulsifier through a reaction of N,N-methylene bisacrylamide, hydroxyethyl acrylate and epoxy resin E-44, uniformly stirring the water-based epoxy emulsifier and deionized water to prepare a water-based epoxy emulsion, adding the enhancer into the obtained water-based epoxy emulsion, and mixing the enhancer and amino resin to prepare the water-based epoxy amino baking varnish. The obtained novel baking varnish has certain hardness and corrosion resistance, provides thinking and exploration for developing novel water-based paint films in the future, and has certain practical application value.

Description

technical field [0001] The invention belongs to the field of water-based epoxy amino baking varnish, in particular to a sodium zinc phosphate (NaZnPO 4 ) / graphene-enhanced water-based epoxy amino baking varnish. Background technique [0002] Since the 1970s, in order to meet the requirements of environmental protection and occupational safety regulations, many low-grade, non-toxic anti-rust pigments have been developed and applied abroad. Among them, the earliest development and application and the largest amount of use are zinc phosphate pigments. After the mid-1980s, due to the strengthening of regulations, the amount of toxic anti-rust pigments containing lead and hexavalent chromium was greatly reduced (the United States stopped using red lead as anti-rust pigments in 1995), and zinc phosphate pigments The continuous increase and continuous improvement of performance have further increased the amount of this anti-rust pigment. The reason why the amount of zinc phosphat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/02C09D7/61C09D5/08
CPCC09D163/00C09D7/61C09D5/08C08K2003/328C08L2205/03C08L61/20C08L51/08C08K3/32C08K3/042
Inventor 郑玉婴曾汉啸高松华
Owner FUZHOU UNIV
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