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A kind of preparation method of weather-resistant environment-friendly anticorrosion coating

A technology of anti-corrosion coatings and weather resistance, applied in the direction of anti-corrosion coatings, coatings, etc., can solve the problems of reduced service life, weakened coating weather resistance, etc., to improve dispersion and compatibility, solve dispersion and compatibility , Improve the effect of corrosion resistance

Active Publication Date: 2019-09-17
CHANGCHUN SHUNFENG XINCHENG BUILDING MATERIAL CO LTD
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the weather resistance of the coating is greatly weakened under the influence of the natural environment for outdoor steel structures
Weather resistance is a crucial factor in determining the life of the coating. The service life of the coating is significantly reduced due to the influence of natural climate factors such as sunlight, wind and rain, cold and heat for a long time.

Method used

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  • A kind of preparation method of weather-resistant environment-friendly anticorrosion coating
  • A kind of preparation method of weather-resistant environment-friendly anticorrosion coating
  • A kind of preparation method of weather-resistant environment-friendly anticorrosion coating

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Experimental program
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Effect test

Embodiment 1

[0022] Schematic diagram of the PTFE / aminated graphene / epoxy interaction mechanism, see figure 1 .

[0023] The preparation method of weather-resistant environment-friendly anticorrosion coating comprises the following steps.

[0024] Step 1. Take 1.3g polytetrafluoroethylene emulsion (30% solid content) and disperse it in 100 ml of sodium dodecylbenzenesulfonate (SDBS) surfactant aqueous solution (0.02g / ml), ultrasonic 45min (70 KHz), then add 40ml of polycationic polyethyleneimine (PEI) aqueous solution (0.01g / ml) into the PTFE emulsion, and stir magnetically for 15min (260r / min).

[0025] Step 2. After mixing 2.4g of graphite oxide aqueous dispersion and 0.6g of PTFE emulsion treated in step 1 by stirring for 5 min (220 r / min), add 150 ml of hydrazine hydrate and reduce at 80°C for 8 hours to obtain reduced graphite Oxene coated PTFE hybrid material (RGOP).

[0026] Step 3 Disperse 1 .5 g RGOP into 350 ml ethanol, sonicate for 30 min (70 KHz), then add it to a 500 ml sin...

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Abstract

The invention belongs to the technical field of preparation of coatings and particularly relates to a preparation method of weatherable environment-friendly anticorrosion coating. Polytetrafluoroethylene emulsion treated with polyethyleneimine solution is combined with graphene oxide in electrostatic adsorption manner, the graphene oxide is then reduced, waterborne epoxy resin is grafted to the graphene oxide after amino-functionalization, and the three components are integrated in chemical bond manner; dispersibility and compatibility of AGP (aminated graphene-coated polytetrafluoroethylene)composite in waterborne epoxy resin base are effectively improved, crosslinking degree of the resin base is increased, barrier property of waterborne base coating is effectively improved, and weatherability and corrosion resistance of a coating layer are greatly improved.

Description

technical field [0001] The invention belongs to the technical field of paint preparation, and in particular relates to a preparation method of a weather-resistant and environment-friendly anti-corrosion paint. Background technique [0002] Metal materials have become the most widely used materials because of their excellent mechanical properties, but metal corrosion seriously affects their service life and causes huge economic losses. In recent years, with the increasing number of steel structure buildings, the protection of steel structure buildings has received great attention. Among various anti-corrosion technologies, water-based coating anti-corrosion technology has many unique advantages, and is the most economical, environmentally friendly and widely used effective protection method. However, the weather resistance of the coating is greatly weakened under the influence of the natural environment for outdoor steel structures. Weather resistance is a crucial factor in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D187/00C09D127/18C09D5/08
Inventor 张文强周龙李梅朱东红沈娜李花晶
Owner CHANGCHUN SHUNFENG XINCHENG BUILDING MATERIAL CO LTD