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

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...

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

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