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Hydroxyapatite/ graphene oxide nano-composite laminated structure anticorrosion pigment

A hydroxyapatite and nano-composite technology, applied in the field of environmental chemistry, can solve problems such as no research reports on the preparation of anti-corrosion pigments, and achieve the effects of inhibiting crystal growth, improving compatibility, and compact structure

Inactive Publication Date: 2018-07-31
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Through the investigation of the types and preparation technologies of existing anti-corrosion pigments, it is found that there is no research report on the preparation of hydroxyapatite / graphene oxide nanocomposite laminated structure anti-corrosion pigments

Method used

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  • Hydroxyapatite/ graphene oxide nano-composite laminated structure anticorrosion pigment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Prepare 0.15 mol / L calcium nitrate and 0.09 mol / L sodium phosphate solutions respectively, measure 25 mL of the above two solutions and place them in two beakers, add 0.02 g of graphene and 0.02 g of graphene and 0.075g polyacrylamide, stir until it is fully dispersed. The calcium nitrate solution containing graphene and surfactant was added dropwise to another solution, and the whole system was placed in a water bath at 50 °C. After the dropwise addition was completed, the pH of the solution was adjusted to 8 with ethylenediamine. After standing and aging for 12 hours at room temperature, the precipitate was taken, washed 6 times with deionized water, put into an oven, and dried at 50°C for 12 hours. , to obtain a hydroxyapatite / graphene oxide nanocomposite laminate structure anti-corrosion pigment. The overall size of the obtained hydroxyapatite / graphene oxide nanocomposite laminate structure anticorrosion pigment is about 650 nm. The anti-corrosion pigment is added...

Embodiment 2

[0021] Concentrations of 0.15 mol / L calcium nitrate and 0.09 mol / L sodium phosphate solutions were prepared respectively, 25 mL of the above two solutions were measured and placed in two beakers, and 0.03 g of graphene and 0.03 g of graphene and 0.01g Triton x-100, stir until fully dispersed. The calcium nitrate solution containing graphene and surfactant was added dropwise to another solution, and the whole system was placed in a water bath at 50 °C. After the dropwise addition is completed, adjust the pH of the solution to 8 with ethylenediamine, let it stand for 6 hours at room temperature, take the precipitate, wash it 6 times with deionized water, put it in an oven, and dry it at 60°C for 10 hours , to obtain a hydroxyapatite / graphene oxide nanocomposite laminate structure anti-corrosion pigment. The overall size of the obtained hydroxyapatite / graphene oxide nanocomposite laminate structure anticorrosion pigment is about 550 nm. The anti-corrosion pigment is added to th...

Embodiment 3

[0023] Prepare calcium nitrate and 0.0009mol / L sodium phosphate solutions with a concentration of 0.0015 mol / L respectively, measure 25 mL of the above two solutions and place them in two beakers, and add 0.04 g of graphene to the calcium nitrate and sodium phosphate solutions respectively and 0.0125 g of polyethylene glycol, stirred until dispersed. The calcium nitrate solution containing graphene and surfactant was added dropwise to another solution, and the whole system was placed in a water bath at 50 °C. After the dropwise addition, adjust the pH of the solution to 8 with ethylenediamine, let it stand for 2 hours at room temperature, take the precipitate, wash it with deionized water 6 times, put it in an oven, and dry it at 70°C for 10 hours. A hydroxyapatite / graphene oxide nanocomposite laminate structure anticorrosion pigment is obtained. The overall size of the obtained hydroxyapatite / graphene oxide nanocomposite laminate structure anticorrosion pigment is about 450 ...

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Abstract

The invention belongs to the technical field of environmental chemistry, and particularly relates to a hydroxyapatite / graphene oxide nano-composite laminated structure anticorrosion pigment and a preparation method thereof. The hydroxyapatite / graphene oxide nano-composite laminated structure anticorrosion pigment prepared through the method is of a nano-composite laminated structure, and the surface of the material is firmly compounded with graphene and a surface active agent. The hydroxyapatite / graphene oxide nano-composite laminated structure anticorrosion pigment has the overall diameterbeing around 400 to 650nm, and is prepared by compounding hydroxyapatite and a graphene oxide nano-composite material through a laminating manner; an anticorrosion coating prepared from the hydroxyapatite / graphene oxide nano-composite laminated structure anticorrosion pigment has favorable anticorrosion performance.

Description

technical field [0001] The invention belongs to the field of environmental chemistry, and in particular relates to a hydroxyapatite / graphene oxide nanocomposite laminate structure anticorrosion pigment and a preparation method thereof. Background technique [0002] Phosphate series anti-corrosion pigments are the second generation of anti-corrosion pigments. The biggest advantage is that they are friendly to the environment and are non-toxic and harmless anti-corrosion pigments. Phosphate has good compatibility in various coating systems, and under high temperature conditions, phosphate can produce more stable and less volatile pyrophosphate. Because of the many advantages of phosphate series pigments, they are widely favored by the industry. At present, the main types of phosphate series products commonly seen in the market are zinc orthophosphate, polyphosphate, pyrophosphate and metaphosphate, etc., but little attention has been paid to hydroxyapatite. [0003] Hydroxya...

Claims

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Application Information

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IPC IPC(8): C09D5/08
Inventor 刘金库薛西子袁晓宇卢怡张敏薛亚楠张婧玉周丹王元元许平
Owner EAST CHINA UNIV OF SCI & TECH
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