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Nano composite anticorrosive pigment and water-based anticorrosive coating

An anti-corrosion pigment and nano-composite technology, applied in the field of material chemistry, can solve the problems of poor water solubility of polyaniline, unsuitable carbon steel system, and poor use effect of anti-corrosion pigments.

Inactive Publication Date: 2021-08-31
FUDAN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method is a liquid-liquid ion reaction, the reaction speed is fast, and soluble salt by-products are produced, which is difficult to wash and has a poor effect in anti-corrosion pigments.
[0005] Chinese patent CN112552801A provides a Ti-containing 3 C 2 T x The preparation method of (MXene) / polyaniline nanocomposite anticorrosion pigment, its technique utilizes in-situ polymerization to synthesize Ti 3 C 2 T x (MXene) / polyaniline nanocomposite anti-corrosion pigment, which solves the problems of easy agglomeration of MXene in water, poor water solubility of polyaniline, Ti 3 C 2 T x (MXene) issues such as interlamellar gaps and surface defects
The nano-composite anti-corrosion pigment / water-based coating is suitable for anti-corrosion of stainless steel systems, but it is not suitable for carbon steel systems due to the good conductivity of the sheets

Method used

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  • Nano composite anticorrosive pigment and water-based anticorrosive coating
  • Nano composite anticorrosive pigment and water-based anticorrosive coating
  • Nano composite anticorrosive pigment and water-based anticorrosive coating

Examples

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Effect test

Embodiment 1

[0044] A MXenes / Zn 3 (PO 4 ) 2 Nano composite anticorrosion pigment

[0045] This embodiment provides a Ti 3 C 2 T x MXenes / Zn 3 (PO 4 ) 2 Nano-nano composite anti-corrosion pigment, its specific preparation method is as follows:

[0046] Step 1, take 4.3g (0.02mol) zinc acetate and dissolve in 10mL deionized water, add 1.0gTi to it 3 C 2 T x MXenes powder (prepared by the method in Comparative Example 2) was placed in an ultrasonic instrument with an ultrasonic power of 500W, ultrasonic 10min, and continuous stirring for 12h to obtain a dispersion;

[0047] Step 2, then add 65mL of ethylene glycol to the dispersion, continue to stir for 10min to obtain a suspension, transfer the suspension to a 100mL reactor, heat at 100°C for 24h, and cool naturally to obtain a precursor Crude;

[0048] Step 3, the obtained precipitate was washed three times with absolute ethanol and deionized water, and dried in a vacuum oven at 60°C for 4 hours to obtain 2.489g Ti 3 C 2 T x...

Embodiment 2

[0052] A MXenes / Zn 3 (PO 4 ) 2 Nano composite anticorrosion pigment

[0053] This embodiment provides a Ti 3 C 2 T x MXenes / Zn 3 (PO 4 ) 2 Nano-nano composite anti-corrosion pigment, its specific preparation method is as follows:

[0054] Step 1, take 4.3g (0.02mol) zinc acetate and dissolve in 10mL deionized water, add 1.5gTi to it 3 C 2 T x MXenes powder (prepared by the method in Comparative Example 2) was placed in an ultrasonic instrument with an ultrasonic power of 500W, ultrasonic 10min, and continuous stirring for 12h to obtain a dispersion;

[0055] Step 2, then add 65mL of ethylene glycol to the dispersion, continue to stir for 10min to obtain a suspension, transfer the suspension to a 100mL reactor, heat at 100°C for 24h, and cool naturally to obtain a precursor Crude;

[0056] Step 3, the obtained precipitate was washed three times with absolute ethanol and deionized water, and dried in a vacuum oven at 60°C for 4 hours to obtain 3.022g Ti 3 C 2 T x...

Embodiment 3

[0060] A MXenes / Zn 3 (PO 4 ) 2 Nano composite anticorrosion pigment

[0061] This embodiment provides a Ti 3 C 2 T x MXenes / Zn 3 (PO 4 ) 2 Nano-nano composite anti-corrosion pigment, its specific preparation method is as follows:

[0062] Step 1, take 4.3g (0.02mol) zinc acetate and dissolve in 10mL deionized water, add 2.0gTi to it 3 C 2 T x MXenes powder (prepared by the method in Comparative Example 2) was placed in an ultrasonic instrument with an ultrasonic power of 500W, ultrasonic 10min, and continuous stirring for 12h to obtain a dispersion;

[0063] Step 2, then add 65mL of ethylene glycol to the dispersion, continue to stir for 10min to obtain a suspension, transfer the suspension to a 100mL reactor, heat at 100°C for 24h, and cool naturally to obtain a precursor Crude;

[0064] Step 3, the obtained precipitate was washed three times with absolute ethanol and deionized water respectively, and dried in a vacuum oven at 60°C for 4 hours to obtain 3.530 g T...

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Abstract

The invention belongs to the technical field of material chemistry, and particularly relates to a nano composite anticorrosive pigment and a water-based anticorrosive coating. The nano composite anticorrosive pigment provided by the invention comprises MXenes and nano zinc phosphate, the nano zinc phosphate is loaded on the lamellar surface and / or interlayer of the MXenes, the antirust pigment is characterized in that nano Zn3(PO4)2 crystal grains are uniformly distributed between the interlayer and the surface of the MXenes, and the nano composite anticorrosive pigment has dual effects of physical lamellar shielding and chemical passivation at the same time; and finally, a long-acting metal anti-corrosion effect is achieved.

Description

technical field [0001] The invention belongs to the field of material chemistry, and in particular relates to a nanocomposite anticorrosion pigment and a water-based anticorrosion paint. Background technique [0002] Transition metal carbides (nitrides) (MXenes) are new two-dimensional materials composed of few-layer atoms of transition metal carbides, nitrides or carbonitrides. Relevant studies have shown that MXenes has excellent impermeability, high mechanical properties, chemical and thermal stability, and the development of MXenes series of anti-corrosion pigments has become a hot spot for researchers. Layered MXenes can form thin sheets in the paint film to increase the sealability of the paint film and improve the anti-corrosion performance of the paint film. [0003] Pigments containing lead and chromium used in the market have excellent corrosion inhibition properties, but due to environmental requirements, they are toxic and their applications are limited. Zn 3 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D5/08C09D163/00
CPCC08K2003/328C08K2201/011C09D5/084C09D163/00C08K9/12C08K3/32
Inventor 顾广新李程程薛国明徐杰余海坤
Owner FUDAN UNIV