Cerium-doped zinc phosphate material, preparation method thereof, anti-corrosion coating containing same

An anti-corrosion coating and cerium doping technology are applied in the field of cerium doped zinc phosphate materials and their preparation, which can solve the problems of step-by-step precipitation, high temperature required for preparation process, large amount of waste water discharge, etc. Wide, easy-to-control effects

Active Publication Date: 2021-06-25
GUANGZHOU SPECIAL PRESSURE EQUIP INSPECTION & RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method is a combination of liquid phase method and ball milling method, and polyethylene glycol is required as a solvent, which is easy to cause step-by-step precipitation due to different solubility products. At the same time, the preparation process requires high temperature and a large amount of wastewater discharge

Method used

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  • Cerium-doped zinc phosphate material, preparation method thereof, anti-corrosion coating containing same
  • Cerium-doped zinc phosphate material, preparation method thereof, anti-corrosion coating containing same
  • Cerium-doped zinc phosphate material, preparation method thereof, anti-corrosion coating containing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A kind of anticorrosion coating of present embodiment, its preparation method is as follows:

[0036] (1) Preparation of cerium-doped zinc phosphate material

[0037] Take 80mL of 0.15mol / L ZnSO 4 ·7H 2 O and 20mL of 0.15mol / L CeCl 3 After mixing evenly, add 48 mL of 0.25 mol / L Na 3 PO 4 12H 2 O, control the rate of addition to a constant rate of 0.5mL / min, keep stirring for 60min, and age the resulting precipitate for 24h. Wash 5 times with ethanol and distilled water, and centrifuge at a speed of 6000 rpm, dry the obtained precipitate at 96°C for 48 hours, take the dried precipitate and grind it into a powder in a mortar to obtain flake Ce 3+ Doped nano-zinc phosphate product, do A component.

[0038] 3ZnSO 4 ·7H 2 O+2Na 3 PO 4 12H 2 O=Zn 3 (PO 4 ) 2 +3Na 2 SO 4 +45H 2 o

[0039] (2) Preparation of resin matrix

[0040] Take 6g of ethylene glycol monobutyl ether and dissolve 15g of water-based epoxy resin (E51). After it is completely dissolved, ad...

Embodiment 2

[0045] A kind of anticorrosion coating of present embodiment, its preparation method is as follows:

[0046] (1) Preparation of cerium-doped zinc phosphate material

[0047] Take 85mL of 0.15mol / L ZnSO 4 ·7H 2 O and 15mL of 0.15mol / L CeCl 3 After mixing evenly, add 46 mL of 0.25 mol / L Na 3 PO 4 12H 2O, control the rate of addition to a constant rate of 0.5mL / min, keep stirring for 60min, and age the resulting precipitate for 24h. Wash 5 times with ethanol and distilled water, and centrifuge at a speed of 6000 rpm, dry the obtained precipitate at 96°C for 48 hours, take the dried precipitate and grind it into a powder in a mortar to obtain flake Ce 3+ Doped nano-zinc phosphate product, do A component.

[0048] 3ZnSO 4 ·7H 2 O+2Na 3 PO 4 12H 2 O=Zn 3 (PO 4 ) 2 +3Na 2 SO 4 +45H 2 o

[0049] The field emission scanning electron microscope picture of the cerium-doped nano-zinc phosphate product prepared in embodiment 2 is as follows figure 1 As shown, it can be ...

Embodiment 3

[0057] A kind of anticorrosion coating of present embodiment, its preparation method is as follows:

[0058] (1) Preparation of cerium-doped zinc phosphate material

[0059] Take 85mL of 0.15mol / L ZnSO 4 ·7H 2 O and 15mL of 0.15mol / L CeCl 3 After mixing evenly, add 46 mL of 0.25 mol / L Na 3 PO 4 12H 2 O, control the rate of addition to a constant rate of 0.5mL / min, keep stirring for 60min, and age the resulting precipitate for 24h. Wash 5 times with ethanol and distilled water, and centrifuge at a speed of 6000 rpm, dry the obtained precipitate at 96°C for 48 hours, take the dried precipitate and grind it into a powder in a mortar to obtain flake Ce 3+ Doped nano-zinc phosphate product, do A component.

[0060] 3ZnSO 4 ·7H 2 O+2Na 3 PO 4 12H 2 O=Zn 3 (PO 4 ) 2 +3Na 2 SO 4 +45H 2 o

[0061] (2) Preparation of resin matrix

[0062] Take 6g of isopropanol and n-butanol blending agent (mass ratio of isopropanol and n-butanol=4:1) to dissolve 25g of water-based e...

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PUM

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Abstract

The invention relates to a cerium-doped zinc phosphate material, a preparation method thereof, and an anticorrosion coating containing the same. The preparation method comprises the following steps: (1) adding cerium salt to an aqueous solution of zinc sulfate to obtain a mixed solution; (2) adding phosphate to the mixed solution described in step (1) under stirring to react to form a precipitate, Aging; (3) collecting the aged precipitate in step (2), washing, drying, and grinding; to obtain. The preparation method can prepare a flaky cerium-doped zinc phosphate material, which has excellent mechanical properties and corrosion resistance, and the preparation method has mild conditions, is easy to control, and is environmentally friendly.

Description

technical field [0001] The invention relates to the technical field of anti-corrosion coatings, in particular to a cerium-doped zinc phosphate material, a preparation method thereof, and an anti-corrosion coating containing the same. Background technique [0002] In recent years, zinc phosphate is a widely used anti-rust pigment. Its main advantages are good performance, non-toxic, white or light color, low refractive index, so it is very easy to color, and can be dispersed in oily resin and water-based pigments. and other base materials. The paint prepared with it has good construction performance, and can have strong adhesion with metal substrates and topcoat coating films, and the raw materials are easy to obtain and the price is moderate. Zinc phosphate is a non-toxic and one of the most important multifunctional metal phosphates, which belongs to the active antirust pigment, which increases the charge transfer resistance by forming a stable and firm phosphating film la...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B25/37C09D163/00C09D5/08
CPCC01B25/37C01P2002/85C01P2004/03C08K2003/328C08K2201/011C09D5/084C09D163/00C08K7/00C08K3/32
Inventor 翟伟杨波张双红李茂东黄国家王志刚李悦李仕平谢小武李爽郭华超文芳
Owner GUANGZHOU SPECIAL PRESSURE EQUIP INSPECTION & RES INST
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