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Carbon-based aqueous composite coating material

A composite coating, carbon-based water-based technology, used in anti-corrosion coatings, coatings, etc., can solve the problems of difficult curing, pollution, easy to float and bloom, etc.

Inactive Publication Date: 2019-06-04
马驰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although solvent-based fluorocarbon coatings have good performance, they also have many defects, such as easy to float and bloom, difficult to cure at room temperature, and release volatile organic compounds during the curing process, which will pollute the environment, etc. its application in the paint industry

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment example 1

[0012] The surface and cross-sectional SEM images of the composite coating with a filler content of 0.6wt% show that the surface of the blank coating is relatively smooth and dense, indicating that the curing is complete. There will be some protrusions on the surface of the composite coating with filler added, and the carbon nanomaterials in the coating can be vaguely seen. It may be that when the coating is cured and the water evaporates, the filler on the surface of the wet film exposes the surface of the cured coating, but the surface is still covered by the polymer. It can be observed from the cross-sectional diagram of the coating that all the coating sections are relatively dense, and there are almost no holes, indicating that the cured coating has good density. The dispersion of fillers in the coating is relatively uniform, and the two-dimensional and one-dimensional carbon materials are basically distributed parallel to the substrate. It can be seen that a small amoun...

Embodiment example 2

[0014] The contact angle test results of each composite coating can be seen that the contact angle of the coating surface after adding carbon fillers has a slight increase. According to the analysis of the coating surface by scanning electron microscopy, the coating after adding fillers Compared with the surface of the blank coating, the roughness of the surface is somewhat increased, but these fillers do not expose the coating surface, but are wrapped by organic matter, so the surface state of the composite coating is similar to that of the blank coating, and the wettability is not as good as that of the blank coating. Too large a change, indicating that the addition of carbon nanofillers did not change the wettability of the coating surface.

Embodiment example 3

[0016] Electrochemical impedance spectroscopy can be used to monitor the electrochemical behavior of the coating corrosion process. By applying a small-amplitude sinusoidal alternating disturbance signal to the measured electrode, the equivalent circuit model is fitted and analyzed, and the impedance or admittance is measured. Then obtain the electrochemical information of the coating system according to the mathematical model or choose the appropriate method. Small, it will not cause damage to the coating, nor will it cause irreversible effects on the electrode. The disturbance imposed by the impedance test can quickly obtain the coating capacitance, coating resistance, metal Various electrochemical parameters such as interfacial double layer capacitance and charge transfer resistance can explore the failure mechanism of the coating and the corrosion mechanism of the substrate interface from multiple aspects. Therefore, electrochemical impedance spectroscopy has become an imp...

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Abstract

The invention relates to a carbon-based aqueous composite coating material, which is prepared from the following raw materials: sodium hydroxide, sodium chloride, anhydrous sodium carbonate, sodium silicate, sodium dialkyl sulfonate and an anticorrosive coating material. According to the present invention, six carbon nanometer fillers are added to an industrial aqueous anticorrosive coating material by using a solution blending method, high-speed stirring and ultrasonic dispersion treatment are performed to prepare a composite coating material, the infrared spectrum of the composite coating material is tested, the components of the composite coating material are analyzed, an aluminum foil is coated with the composite coating material to prepare a coating, the surface morphology and the cross-section morphology of the coating are characterized by a scanning electron microscopy, the surface wettability and the corrosion resistance are tested, and the infrared spectrum shows that the group structure of the coating material cannot be changed by adding a small amount of the carbon nanometer fillers, wherein the carbon nano-tube content before the oxidation is 0.2 wt%, the content of theother carbon fillers is 0.4 wt%, and the corrosion resistance of each composite coating is optimal.

Description

Technical field [0001] The invention relates to a paint, in particular to a carbon-based water-based composite paint. Background technique [0002] Due to the increase in the price of petrochemical resources and the deterioration of the human living environment in recent years, reducing the waste of non-renewable resources, reducing the pollution of the human living environment, and vigorously developing environmentally friendly coatings and high-performance coatings has become an imminent development of the coatings industry in the world today. direction. Although solvent-based fluorocarbon coatings have good performance, they also have many defects, such as easy to float and bloom, difficult to cure at room temperature, and release volatile organic compounds during the curing process to pollute the environment, etc. its application in the coatings industry. Water-based paint is an environmentally friendly paint that uses water as a solvent or dispersion medium. This pain...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D5/08C09D7/61
Inventor 马驰
Owner 马驰
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