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A kind of preparation method of hydrophobic composite coating

A composite coating, hydrophobic technology, used in coatings, anti-corrosion coatings, etc., can solve problems such as unsatisfactory hydrophobicity, and achieve the effects of good hydrophobicity and corrosion resistance, large water droplet contact angle, and simple process

Active Publication Date: 2021-03-23
ANHUI POLYTECHNIC UNIV MECHANICAL & ELECTRICAL COLLEGE
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But the hydrophobicity is not ideal

Method used

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  • A kind of preparation method of hydrophobic composite coating

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preparation example Construction

[0022] The present invention also provides a method for preparing a hydrophobic composite coating. The preparation method comprises: immersing the cleaned metal material in the hydrophobic composite material for 10-20 minutes, taking it out, standing still for 1-2 hours, and keeping it warm at 70-120°C for 20 minutes. ~35min, and then heat preservation at a high temperature of 250~350°C for 40~55min to obtain a hydrophobic composite coating; wherein, the hydrophobic composite material contains: 12%~18% of aluminum powder, 5%~5% of rare earth modified alloy powder 9%, rare earth modified alloy powder 0.6%~1.2%, chromate 2%~6%, molybdate 2%~6%, cyclohexanol 18%~22%, dodecylbenzenesulfonic acid Calcium 2% to 5%, styrene ethyl polyoxyethylene ether 2% to 4%, rare earth modified inorganic material powder 4% to 8%, and the balance is water; among them, the rare earth modified alloy powder is zinc powder , a mixture of neodymium powder, yttrium powder and copper powder; the rare eart...

Embodiment 1

[0042] A hydrophobic composite material, the weight percentage of each component in the material is: 12% of aluminum powder, 5% of rare earth modified alloy powder, 0.6% of rare earth modified alloy powder, 2% of chromate, molybdate 2%, cyclohexanol 18%, calcium dodecylbenzenesulfonate 2%, styrene ethyl polyoxyethylene ether 2%, rare earth modified inorganic material powder 4%, and the rest is water. Rare earth modified alloy powder 1, the weight percent of its composition is: Zn 36%, Nd 0.04%, Yb 0.03%, copper balance. Rare earth modified alloy powder 2, the weight percent of its composition is: Si 10%, Er 0.05%, Yb 0.03%, aluminum balance. Rare earth modified inorganic material powder: Al 2 o 3 23%, CaO 0.3%, ZnO 0.3%, BaO 3%, MnO 5%, Yb 2 o 3 3%, Fe 2 o 3 0.5%, TiO 2 1%, Er 2 o 3 0.03%, K 2 O 0.4%, B 2 o 3 0.3%, I SiO2.

Embodiment 2

[0044] A hydrophobic composite material, the weight percentage of each component in the material is: 14% of aluminum powder, 7% of rare earth modified alloy powder, 0.9% of rare earth modified alloy powder, 4% of chromate, molybdate 4%, cyclohexanol 20%, calcium dodecylbenzenesulfonate 4%, styrene ethyl polyoxyethylene ether 3%, rare earth modified inorganic material powder 6%, and the rest is water. Rare-earth modified alloy powder 1, the weight percent of its composition is: Zn 38%, Nd 0.06%, Yb 0.05%, copper balance. Rare earth modified alloy powder 2, the weight percent of its composition is: Si 11%, Er 0.07%, Yb 0.05%, aluminum balance. Rare earth modified inorganic material powder: Al 2 o 3 25%, CaO 0.5%, ZnO 0.4%, BaO 4%, MnO 7%, Yb 2 o 3 5%, Fe 2 o 3 0.7%, TiO 2 2%, Er 2 o 3 0.06%, K 2 O 0.7%, B 2 o 3 0.4%, the balance is SiO2.

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Abstract

The invention discloses a preparation method of a hydrophobic composite coating. The hydrophobic composite material of the hydrophobic composite coating can be applied to various metal materials, andthe obtained metal material is suitable for the fields of petrochemical, automobile, ship, engineering machinery, electric power industry and the like. The hydrophobic composite coating prepared by the hydrophobic composite materials has a larger contact angle of water droplets and has better hydrophobicity and corrosion resistance. The preparation method has the advantages of simple process and low production cost, and is suitable for industrial production.

Description

technical field [0001] The invention relates to the technical field of iron and steel, in particular to a method for preparing a hydrophobic composite coating. Background technique [0002] CN201510552308.1 discloses a hydrophobic anti-corrosion dacromet coating and a preparation method thereof, belonging to the technical field of metal anti-corrosion. It is composed of surface-modified scaly zinc and aluminum powder, organic solvent, film-forming aid, hydrophobic nano-sol and hydrophobic nano-powder; in the total weight of 100%, zinc powder accounts for 18-23%, aluminum powder accounts for 2 ~4.5%, hydrophobic nano-sol accounts for 34-42%, hydrophobic nano-powder accounts for 0.8-3.5%, film-forming aid accounts for 0.4-0.9%, and solvent accounts for 33-40%. The invention makes the surface of the dacromet coating exhibit hydrophobicity through the hydrophobic nano sol and nano powder, and improves the anti-corrosion performance. The technical scheme is to disperse the zinc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D1/00C09D5/10C09D7/61C09D7/65
CPCC09D1/00C09D5/10C09D5/103C09D7/61C09D7/65
Inventor 赵浩峰于鹏张椿英郑建华柴知章李子嫣
Owner ANHUI POLYTECHNIC UNIV MECHANICAL & ELECTRICAL COLLEGE