Glass fiber surface chemical plating Ni-Co-Pr-B quarternary alloy plating solution and preparation method thereof

Abstract

The invention discloses glass fiber surface chemical plating Ni-Co-Pr-B quarternary alloy plating solution and a preparation method thereof. The preparation method comprises the following operating steps: 1, pretreating glass fiber; 2, dissolving nickel chloride, cobalt chloride, praseodymium sulfate, sodium borohydride, potassium sodium tartrate, sodium metabisulfite and ethylenediamine in distilled water separately; 3, uniformly mixing the nickel chloride solution, cobalt chloride solution, praseodymium sulfate solution, sodium metabisulfite solution and ethylenediamine solution completely dissolved in step 2 to obtain a mixed solution, adding the mixed solution in the potassium sodium tartrate solution and uniformly stirring; 4, slowly adding sodium borohydride solution in the solutionprepared in step 2, diluting and adopting sodium hydroxide to adjust the pH value to 11-14; 5, adding the glass fiber pretreated in step 1 in the plating solution prepared in step 3 for chemical plating of tin and nickel, wherein the plating temperature is 55-90 DEG C; and 6, drying the plated Ni-Co-Pr-B glass fiber prepared in step 5. The Ni-Co-Pr-B glass fiber plating layer prepared and obtainedby adopting the technical scheme is high in nickel content, plating layer binding force, electrical conductivity and stability.

Description

technical field [0001] The invention relates to the technical field of electroless plating, in particular to a Ni-Co-Pr-B quaternary alloy plating solution for electroless plating on the surface of glass fibers and a preparation method thereof. Background technique [0002] With the rapid development of electricity, electronics and communication technology, electromagnetic radiation has become the fourth largest environmental pollution after air pollution, water pollution and noise pollution. The United Nations Conference on the Human Environment has listed it as one of the main pollutants that must be controlled . With the improvement of people's awareness of the hazards of electromagnetic radiation, the research on electromagnetic environmental protection materials and technologies has become one of the hotspots in the field of materials and environmental protection. [0003] Using electromagnetic shielding coatings to shield stray electromagnetic waves that interfere wit...

AI Technical Summary

Problems solved by technology

The main disadvantages of the traditional glass fiber electroless plating technology are: 1. Sodium hypophosphite is used as the reducing agent. Sodium hypophosphite has certain toxicity, and the sodium hypophosphite solution is easy to explode when heated and evaporated under normal pressure.

2. There is H in electroless plating 2 PO 2 － +H 2 O=H + +HPO 3 2- +H 2 As a side reaction, most of the added hypophosphite is finally converted into low-solubility phosphite. When there is a complexing agent and there are few free nickel ions, no precipitate will be produced; when there is nickel phosphite solid precipitate, the solution will be triggered. In electroless plating, there will inevitably be a small amount of nickel precipitated on the tank wall and in the plating solution, which will easily lead to a self-catalyzed reaction in a homogeneous phase, and the hydrogen ions generated in the reaction will reduce the pH of the plating solution, thereby reducing deposition rate

3. In electroless plating, there are phosphorus precipitation and co-deposition of phosphorus and nickel to form a nickel-phosphorus alloy coating with high phosphorus content and phosphorus in a dispersed state, which increases the brittleness of the coating, reduces the bonding force and conductivity of the coating, and thus affects the quality of the coating.

4. Iron and copper have poor stability and are easy to oxidize, which will also reduce the bonding force and conductivity of the coating, and affect the quality of the coating

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