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Production method of graphene modified polyaspartic acid-polyurea waterproof and anticorrosion coating

A polyaspartic acid and graphene modification technology, applied in the direction of anti-corrosion coatings, etc., can solve the problems of increased construction cost, short gel time, unfavorable operation of construction personnel, etc., to prevent cracking, increase cracking thickness, and weather resistance good performance

Inactive Publication Date: 2018-03-13
ANHUI KUAILAI WATERPROOFING & ANTI CORROSION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, due to its very short gel time, only a few seconds, the traditional spray polyurea coating construction must use special high temperature and high pressure impact mixing equipment, which not only increases the construction cost, but also is not conducive to the operation of general construction personnel.

Method used

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Examples

Experimental program
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Effect test

Embodiment Construction

[0018] The graphene-modified polyaspartic acid polyurea waterproof and anticorrosion coating of the present embodiment has following steps to prepare:

[0019] (1) Put the reaction vessel in an ice-water bath, add natural flake graphite, sodium nitrate and concentrated sulfuric acid in sequence, mix evenly, stir for 30 minutes, then add potassium permanganate in 3 times, with an interval of 30 minutes between each addition, after the addition is completed, Continue magnetic stirring for 3 hours, raise the temperature to 40°C, continue magnetic stirring at constant temperature for 4 hours, add deionized water drop by drop, control the dropwise addition within 1.5 hours, cool to room temperature, add 30% hydrogen peroxide, stand for 24 hours, filter , washed 6 times with 5% hydrochloric acid solution; the obtained substance was repeatedly centrifuged and washed with deionized water until the supernatant was neutral, leaving a layer of colloid, and dried in a vacuum oven at 40°C t...

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Abstract

The invention relates to a production method of graphene modified polyaspartic acid-polyurea waterproof and anticorrosion coating. The production method is characterized by including: preparing graphene oxide; using isophorone diisocyanate to modify the graphene oxide, and using phenylhydrazine to reduce the graphene oxide to obtain isocyanate modified graphene; subjecting dioctyl maleate and ethylene diamine to Michael addition reaction to obtain aspartate; mixing the aspartate serving as the raw material, HDI serving as the curing agent, the isocyanate modified graphene serving as the modifier, and other auxiliaries to prepare the coating, and coating, curing and maintaining to obtain the graphene modified polyaspartic acid-polyurea waterproof and anticorrosion coating. The waterproof and anticorrosion coating keeps the excellent performance of traditional polyurea coating and also overcomes the defects that traditional polyurea is excessively fast in gelation and needs special equipment to perform construction.

Description

technical field [0001] The invention relates to an anti-corrosion coating, in particular to a production method of a graphene-modified polyaspartic acid polyurea waterproof anti-corrosion coating. Background technique [0002] Compared with traditional environmentally friendly materials, polyurea coating has the following advantages: no need to add catalysts, high reaction speed, fast curing, and can be sprayed on any vertical, inclined and curved surfaces without appearing The phenomenon of sagging, the gel time is short, and the walking strength can be reached within a few minutes; it is not sensitive to temperature, humidity and moisture, and is not affected by humidity, ambient temperature and construction parts during construction; it is a two-component system, The solid content is 100%, it does not contain other volatile organic compounds, does not pollute the environment, and there will be no peculiar smell caused by solvent volatilization during construction. [000...

Claims

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Application Information

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IPC IPC(8): C09D175/02C09D5/08C08G18/72C08G18/75C08G18/60
CPCC09D175/02C08G18/603C08G18/72C08G18/755C09D5/08
Inventor 蒋能
Owner ANHUI KUAILAI WATERPROOFING & ANTI CORROSION
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