Electroplating, coil coating, metal surface treatmentNano silica dispersion liquid

13305******, 13305631650, qq:524915046

Nano silica dispersion liquidPerformance:

1．Nano silica dispersion liquidUltra-strong resistance to acid, alkali, and high temperatures: ICompanyThe developed and produced nano-silica solution is available in acidic, neutral, and alkaline types, and products with a similar pH should be used in different environments. This product exhibits strong resistance to acid, alkali, and temperature stability. It demonstrates excellent stability in strongly acidic environments, such as solutions containing trivalent chromium, hexavalent chromium, and phosphoric acid. Under sealed conditions at 80°C, it does not undergo gelation changes for six months, ensuring the product's performance and quality.

2．Ultra-strong permeability: The ultrafine nano-SiO2, with a particle size in the range of 8–15 nm, inherently possesses high activity, endowing the product with strong permeability. It can reach edge areas that are inaccessible in metal surface treatment processes such as electroplating, effectively filling defects like ultra-fine pores, thereby enhancing corrosion resistance and salt spray resistance.

3. High Reactivity and Insulation Performance: Nano-silica can act on microporous defect sites within a very short time (30 to 60 seconds). After appropriate drying at a temperature (<100°C), it will react and bond with the substrate and surrounding auxiliary materials, effectively providing corrosion protection to enhance the workpiece's resistance to corrosion, salt spray, and other effects.

NanometerSilica dispersion liquidSiO2Mechanism of action:

The mechanism by which nano-SiO₂ materials enhance the corrosion resistance and salt spray resistance of electroplated metal components and coiled metals differs from that of galvanization or protective paint application. Processes such as electroplating and painting cannot guarantee complete and thorough protection of the edges, corners, or even the main areas of components. Under a microscope, electroplated workpieces exhibit numerous ultra-fine pores (at the micron or even nanometer scale) exposed to the air. These unprotected defects become sites where electrochemical reactions occur, leading to rust formation on metal workpieces. In contrast, nanomaterials leverage their unique permeability, insulation properties, and reactivity to effectively reach and address these defect areas that electroplating or painting processes cannot cover, thereby significantly improving the corrosion resistance and salt spray resistance of metal components.

NanometerSilica dispersion liquidMaterial usage method:

1．Use in passivation solution: In the electroplating process, directly add 10% to 30% of this product to the passivation solution, stir evenly, and then use it according to the normal process.

2．Directly used as a sealant: Dilute the product with pure water by 4 to 5 times, then directly immerse the components that have undergone processes such as electroplating, passivation, and water washing into this pure water solution. Soak for about 30 seconds, then remove and air dry.

3. The product can be directly added to the concentrated solution of the original passivation solution or sealing agent to improve product performance.

It can also be directly added to the working solution in the electroplating process for use.

All of the above methods can significantly enhance the corrosion resistance and salt spray resistance of metal components. Depending on the type of process, the salt spray resistance time can generally be improved by 30% to 200% compared to the original level.

NanometerSilica dispersion liquidProduct Performance Indicators:

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