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Preparation technology of chemical plating Ni-P-PTFE composite coating

A technology of composite coating and preparation process, which is applied in the field of metal surface treatment, can solve problems such as the influence of equipment safety operation and the limitation of application range, achieve good chemical stability and solid lubricating properties, improve wear resistance and hydrophobic effect, and bath stable effect

Inactive Publication Date: 2017-07-18
NORTHEAST DIANLI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Harmful microorganisms can use the nutrients in the circulating cooling water to grow and reproduce, and produce slimy, highly absorbent deposits that adhere to the surface of the equipment, seriously affecting the safe operation of the equipment
Limited by the pressure of the environment and energy consumption, some traditional cleaning methods such as mechanical cleaning, biocides and pulsating flow are greatly limited in the scope of application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0050] The preparation method of the Ni-P-PTFE composite coating solution in the described (2) step comprises the steps:

[0051] (1). First, nickel sulfate main salt is fully dissolved in deionized water to obtain A solution;

[0052] (2). Add lactic acid and aminoacetic acid complexing agent dissolved in deionized water into the fully stirred A solution, mix evenly, and fully stir to obtain B solution;

[0053] (3). Add the sodium hypophosphite reducing agent dissolved in deionized water into the fully stirred B solution and mix evenly, and fully stir to obtain the C solution;

[0054] (4). Add sodium acetate and sodium citrate buffer dissolved in deionized water to the fully stirred C solution and mix evenly, add potassium iodide KI and fully stir to obtain D solution;

[0055] (5). Take 4-12ml / L of PTFE emulsion with a solid content of 60%, add 0.3g / L of perfluorooctyl quaternary ammonium iodide surfactant under stirring, stir for 2h, ultrasonically disperse for 30min, an...

Embodiment 1

[0064] Described Ni-P-PTFE composite plating solution comprises following components:

[0065] Nickel Sulfate NiSO 4 ·6H 2 o

Embodiment 2

[0067] Described Ni-P-PTFE composite plating solution comprises following components:

[0068] Nickel Sulfate NiSO 4 ·6H 2 o

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PUM

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Abstract

The invention discloses a preparation technology of a chemical plating Ni-P-PTFE composite coating, and belongs to the technical field of metal surface treatment. The preparation technology comprises the following steps: (1) a low-carbon steel heat exchange surface is subjected to preliminary treatment; (2) Ni-P-PTFE composite coating liquid is prepared, and a Ni-P-PTFE composite coating is prepared on the low-carbon steel heat exchange surface by employing the prepared Ni-P-PTFE composite coating liquid; and (3) the microbial fouling inhibition and alleviation performances of the Ni-P-PTFE composite coating are evaluated. The abrasive resistance and the drainage effect of the surface of the Ni-P-PTFE composite coating can be improved effectively, so that the Ni-P-PTFE composite coating can adapt to multiple complex environments. The form and stable Ni-P-PTFE composite coating is formed on a Q235 carbon steel base material, a plating solution is stable in a plating application process, and the uniform and stable Ni-P-PTFE composite coating can be obtained nearly without mixing.

Description

technical field [0001] The invention relates to a process for preparing an electroless Ni-P-PTFE composite coating, which belongs to the technical field of metal surface treatment. Background technique [0002] In the field of energy and chemical industry, the problem of microbial fouling of heat exchange equipment is serious. Harmful microorganisms can use the nutrients in the circulating cooling water to grow and reproduce, and produce slimy, highly absorbent deposits that adhere to the surface of the equipment, seriously affecting the safe operation of the equipment. Due to the pressure of the environment and energy consumption, some traditional cleaning methods such as mechanical cleaning, biocides and pulsating flow are greatly limited in the scope of application. Contents of the invention [0003] In order to overcome the above defects, the present invention provides a process for preparing an electroless Ni-P-PTFE composite coating. The invention uses carbon steel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C18/36C23C18/18
CPCC23C18/36C23C18/1844
Inventor 徐志明刘坐东王景涛
Owner NORTHEAST DIANLI UNIVERSITY
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