Chemically-plated Ni-P/Ni-Mo-P-PTFE composite structure plating layer and preparation method thereof

A ni-mo-p-ptfe, composite structure technology, applied in liquid chemical plating, coating, metal material coating process, etc., can solve the difficult management of sewage source heat pump, increase maintenance workload, sewage flow blockage and other problems, to prevent adhesion and crystallization, uniform coating, and improve anti-corrosion effect

Active Publication Date: 2016-06-01
DALIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the particularity of the sewage water quality, the generated scale is easy to adhere to the sewage source heat pump pipeline, the microorganisms adhere to grow to form a biofilm, the oil adheres to the heat exchange surface to form an oil film, and the floating and suspended solids block the pipeline and The inlet of the equipment blocks the flow of sewage, and the thermal resistance increases to deteriorate the heat transfer process
The blockage of pipelines and heat exchange equipment caused by poor water quality will block the flow of sewage and attenuate heat transfer, making the operation of sewage source heat pumps difficult to manage and increasing the maintenance workload

Method used

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  • Chemically-plated Ni-P/Ni-Mo-P-PTFE composite structure plating layer and preparation method thereof
  • Chemically-plated Ni-P/Ni-Mo-P-PTFE composite structure plating layer and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0024] (1) Degreasing, pickling, and activation: After cleaning the metal substrate in deionized water, put it in an acetone solution for ultrasonic cleaning for 2-3 minutes, the ultrasonic frequency is 40KHz, and the power is 2KW. After cleaning with deionized water again, put Put it into 10wt% sodium hydroxide solution to remove oil, the oil removal time is 15-20min, then put it into 70°C deionized water for cleaning, after cleaning, put it into 36.5wt% concentrated hydrochloric acid for activation for 2-3min;

[0025] (2) Plating once: Plating solution A comprises the following components: nickel sulfate 20g / L; sodium hypophosphite 10g / L; citric acid 2g / L; sodium acetate 10g / L; The substrate is placed in the plating solution A for chemical deposition plating, and the deposition time is 1h;

[0026] (3) Secondary plating: Plating solution B includes the following components: nickel sulfate 20g / L; sodium hypophosphite 16.5g / L; sodium molybdate: 1.5g / L; sodium acetate 8.5g / L; ...

Embodiment 2

[0031] (1) Degreasing, pickling, and activation: After cleaning the metal substrate in deionized water, put it in an acetone solution for ultrasonic cleaning for 2-3 minutes, the ultrasonic frequency is 40KHz, and the power is 2KW. After cleaning with deionized water again, put Put it into 10wt% sodium hydroxide solution to remove oil, the oil removal time is 15-20min, then put it into 70°C deionized water for cleaning, after cleaning, put it into 36.5wt% concentrated hydrochloric acid for activation for 2-3min;

[0032] (2) Plating once: Plating solution A comprises the following components: nickel sulfate 25g / L; sodium hypophosphite 8g / L; citric acid 1g / L; sodium acetate 8g / L; The substrate is placed in the plating solution A for chemical deposition plating, and the deposition time is 1h;

[0033] (3) Secondary plating: Plating solution B includes the following components: nickel sulfate 12g / L; sodium hypophosphite 10g / L; sodium molybdate: 0.1g / L; sodium acetate 5g / L; glycin...

Embodiment 3

[0038] (1) Degreasing, pickling, and activation: After cleaning the metal substrate in deionized water, put it in an acetone solution for ultrasonic cleaning for 2-3 minutes, the ultrasonic frequency is 40KHz, and the power is 2KW. After cleaning with deionized water again, put Put it into 10wt% sodium hydroxide solution to remove oil, the oil removal time is 15-20min, then put it into 70°C deionized water for cleaning, after cleaning, put it into 36.5wt% concentrated hydrochloric acid for activation for 2-3min;

[0039] (2) Plating once: Plating solution A comprises the following components: nickel sulfate 15g / L; sodium hypophosphite 20g / L; citric acid 5g / L; sodium acetate 15g / L; The substrate is placed in the plating solution A for chemical deposition plating, and the deposition time is 1h;

[0040] (3) Secondary plating: Plating solution B includes the following components: nickel sulfate 30g / L; sodium hypophosphite 20g / L; sodium molybdate: 3.3g / L; sodium acetate 15g / L; gly...

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Abstract

The invention discloses a chemically-plated Ni-P/Ni-Mo-P-PTFE composite structure plating layer and a preparation method of the chemically-plated Ni-P/Ni-Mo-P-PTFE composite structure plating layer and belongs to the technical field of functional plating layers. The surface of the composite structure plating layer is a Ni-Mo-P-PTFE plating layer, and the metal base material of the composite structure plating layer is a Ni-P plating layer. The preparation method of the composite structure plating layer includes the following steps that the deoiling, acid pickling and activating treatment are conducted on the metal base material; the Ni-P plating layer chemically plated on the surface of the metal base material serves as an inducing layer; the Ni-Mo-P-PTFE plating layer is chemically plated on the Ni-P plating layer; and cleaning and drying are conducted. By the adoption of the Ni-P/Ni-Mo-P-PTFE composite structure plating layer prepared through the preparation method, by adjusting the microstructure of the plating layers, the physical performance and chemical performance of the plating layers are improved, and the corrosion performance and scaling resistance of pipelines can be improved remarkably.

Description

technical field [0001] The invention relates to a method for performing anti-corrosion and anti-scaling coating technology on the surface of a pipeline, in particular to an electroless Ni-P / Ni-Mo-P-PTFE composite structure coating and a preparation method thereof. Background technique [0002] Economic and social development urgently needs new high-efficiency energy-saving technologies. Urban sewage is a kind of urban waste heat-type clean energy. Heat pump cold and heat sources can use urban sewage to heat and cool buildings, which has social benefits of energy conservation and environmental protection. The difficulty in the popularization and application of sewage source heat pump technology is that impurities in sewage easily form scales that cause heat exchange surface pollution and scaling. For the precipitated substances, the fouling mechanism process can be roughly divided into the following steps: first, ions in water react to form salt molecules with lower solubilit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C18/36C23C18/50
CPCC23C18/1637C23C18/1651C23C18/1662C23C18/36C23C18/50
Inventor 付传起王宇雍帆
Owner DALIAN UNIV
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