Microcapsule-based chemical nickel plating solution and method for preparing coating

By introducing microcapsules into the electroless nickel plating solution, the self-repair function of the coating is achieved, solving the problem of easy and irreparable traditional coatings, extending service life and reducing maintenance costs.

CN119710657APending Publication Date: 2025-03-28GUANGDONG INTENSIVE ECOTECH CO LTD
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Patent Information

Application Number
CN202411796944.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-09
Publication Date
2025-03-28

AI Technical Summary

Technical Problem

Traditional electroless nickel coatings are susceptible to damage during use and cannot be self-repaired, resulting in corrosion expansion and equipment failure, and lack of self-repair function in high hardness and corrosion-resistant environments.

Method used

By introducing microcapsules into the electroless nickel plating solution, the microcapsule shell material adopts polyurea or polyamide, and the core material is the component of the electroless nickel plating solution. The microcapsules release the core material when the coating is damaged, generating new nickel-phosphorus alloy deposits, repairing cracks and preventing the spread of corrosive media.

Benefits of technology

The self-healing function of the coating is realized, which extends service life, reduces maintenance costs, and maintains good performance in high hardness and corrosion-resistant environments.

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Abstract

The invention provides a chemical nickel-plating solution based on microcapsules and a method for preparing a coating. The chemical nickel-plating solution based on the microcapsules comprises the following components: 20-30g / L of nickel sulfate hexahydrate; 15-20 g / L of sodium hypophosphite; 10 to 15g / L of trisodium citrate; 2-5 g / L of microcapsules; 10-15 g / L of a stabilizer; the pH regulator is used for regulating the pH value to 4.5 to 5.0; and the balance of deionized water. According to the invention, the microcapsules containing the same components as the chemical nickel plating solution are introduced, so that the automatic repairing function of the coating after being damaged is realized. The coating has high mechanical strength and excellent self-repairing characteristic, and is suitable for surface protection of industrial equipment needing long service life and corrosion resistance.
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