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A kind of method for preparing surface hydrophobic structure coating

A hydrophobic and coating technology, applied in the field of hydrophobic coating preparation, can solve the problems of high cost and cumbersome and complicated process, and achieve the effect of facilitating industrialization and achieving coating stability

Active Publication Date: 2020-04-07
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these hydrophobic surface preparation methods may require special substrates, or the process is cumbersome and complicated, or require high temperature, high pressure and other equipment, which is expensive. Therefore, simple raw materials, low-cost equipment and simple operation processes are used to prepare on stainless steel substrates. Hydrophobic surfaces are a pressing need

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Put the steel piece into NaOH and HCl solution for ultrasonic cleaning first, then put it into 0.025g / ml low-concentration NaCl salt solution for constant voltage 9V electrolysis for 45min, and then soak it in fatty amine solution with a concentration of 0.008g / ml for 15min. Cycle 3 times; then put into electroplating solution (sodium chloride: 240g / L, zinc chloride: 60g / L, boric acid: 32g / L, brightener: agent A 1ml / L, agent B 20ml / L) constant flow 0.1 A was electroplated for 60 minutes, then soaked in 5% stearic acid / dehydrated ethanol solution for 16 hours, and finally put into a tube furnace for 200°C low-temperature tempering (heating 2°C / min, heat preservation 60min), and cooled with the furnace to prepare a product with Coating with hydrophobic structure.

Embodiment 2

[0024] Put the steel parts into NaOH and HCl solutions for ultrasonic cleaning first, then place them in 0.010g / ml low-concentration NaCl salt solution for electrolysis at 9V for 45 minutes, and then soak them in fatty amine solution with a concentration of 0.008g / ml for 15 minutes. Cycle 3 times; then put into electroplating solution (sodium chloride: 240g / L, zinc chloride: 60g / L, boric acid: 32g / L, brightener: agent A 1ml / L, agent B 20ml / L) constant flow 0.15 A was electroplated for 60 minutes, then soaked in 7% stearic acid / dehydrated ethanol solution for 16 hours, and finally put into a tube furnace for 180°C low-temperature tempering (heating 2°C / min, heat preservation 60min), and cooled with the furnace to prepare a product with Coating with hydrophobic structure.

Embodiment 3

[0026] Put the steel parts into NaOH and HCl solution for ultrasonic cleaning first, then put them into 0.015g / ml low-concentration NaCl salt solution for 9V electrolysis for 45min, and then soak them in fatty amine solution with a concentration of 0.007g / ml for 15min. Cycle 3 times; then put into electroplating solution (sodium chloride: 240g / L, zinc chloride: 60g / L, boric acid: 32g / L, brightener: agent A 1ml / L, agent B 20ml / L) constant flow 0.2 A was electroplated for 60 minutes, then immersed in 10% stearic acid / dehydrated ethanol solution for 16 hours, and finally put into a tube furnace for 150°C low-temperature tempering (heating 2°C / min, heat preservation 60min), and cooled with the furnace to prepare a product with Coating with hydrophobic structure.

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PUM

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Abstract

The invention discloses a method for preparing surface hydrophobic structural coating layers, belongs to the field of hydrophobic coating layer preparation, and in particular, relates to a method forelectrochemically etching steel part basal bodies and coating zinc oxide to form hydrophobic micron / nanometer structural coating layers. The method comprises the following specific steps: steel partsare firstly washed by alkali and acid, then, are put in low-concentration salt solution for constant-pressure electrolysis, in electroplating liquid for zinc electroplating and in stearic acid solution for dipping, and finally, are tempered at low temperature. The hydrophobic coating layers prepared by the method overcome high cost caused by selection of specific basal body materials, technical risks caused by rigid process condition requirements and dangers and pollutions caused by application of poisonous and harmful chemical reagents; the surface dewatering of the coating layers and the stability and the practicability of the coating layers are met; and industrial large-batch production is convenient.

Description

technical field [0001] The invention belongs to the field of hydrophobic coating preparation, and in particular relates to a method for etching a steel substrate by an electrochemical method and coating zinc oxide to form a hydrophobic micro / nano structure coating. Background technique [0002] Based on the inspiration of the hydrophobic surfaces and structures of animals and plants in nature, people can construct biomimetic structures to realize the preparation of hydrophobic surfaces to solve problems in real life. At present, the preparation of hydrophobic surfaces mainly adopts vapor deposition method, etching method, electrochemical method, solution immersion method, hydrothermal method, spraying method and so on. However, these hydrophobic surface preparation methods may require special substrates, or the process is cumbersome and complicated, or require high temperature, high pressure and other equipment, which is expensive. Therefore, simple raw materials, low-cost e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D3/22C25F3/06C25D5/36C25D5/48C25D5/50
CPCC25D3/22C25D5/36C25D5/48C25D5/50C25F3/06
Inventor 林涛芦海洋邵慧萍何新波李飞宏李文媛
Owner UNIV OF SCI & TECH BEIJING
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