Archive: Mar 2022

Metal Finishing Chemical Market is expected to grow at a CAGR of 4% to 6% from 2020 to 2025

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Trends, opportunities and forecast in metal finishing chemicals market to 2025 by product type (plating chemicals, conversion coatings, cleaning chemicals, and others), by process (electroplating, plating, polishing, anodizing, plasma spray coating, and Others.), materials (zinc, nickel, chromium, aluminum, copper, precious metals, and others), end use industry (automotive, electrical & electronics, aerospace, construction, and others), and region
Lucintel’s latest market report analyzed that metal finishing chemical provides attractive opportunities in the automotive, electrical & electronics, aerospace, construction, and others industries. The metal finishing chemical market is expected to grow at a CAGR of 4% to 6%. In this market, plating chemical is the largest segment by product type, whereas automotive is largest by end use industry.

Based on product type, the metal finishing chemical market is segmented into plating chemicals, conversion coatings, cleaning chemicals, and others. The plating chemical segment accounted for the largest share of the market in 2020 and is expected to register the highest CAGR during the forecast period, due to chemicals provide superior surface properties, such as corrosion resistance, wear resistance, hardness as well as electrical conductivity to the metal surface.

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Consistency in Curing

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Q: I run a small powder coating operation and we are having trouble with getting consistent results from our curing cycle. What are some of the things that might contribute to inconsistent quality?

There are a wide range of variables that might contribute to quality issues post-cure. Oven dwell time and air temperature are important factors in getting your parts up to cure temperature. Substrate type, thickness and configuration also play an important role because ultimately it is the temperature of the part itself that is most critical to achieving a proper cure for the powder coating. Keep in mind that in order to achieve the maximum physical properties and performance of the coating, it must be fully cured.

In simple terms, the equation for cure is as follows:

Temperature + Time = Cure.

In more technical terms, cure is the measure of the crosslinked oligomer chains to fully reach double bonds residing in the powder coating matrix following exposure to the curing process.

Paying attention to the cure window is crucial. If parts are not reaching the recommended cure window for the product it can lead to under-cure or over-cure of the powder coating.

Issues associated with under-cure are as follows:

    • Poor mechanical property
    • Poor chemical property
    • Color not fully developed
    • Gloss at lower level
    • Poor adhesion
    • Poor MEK results (Reagent A or B)
    • Incorrect appearance (grainy)
    • Cracking or grazing especially on clear coat powder

Issues associated with over-cure:

  • Color out of specification (for example, a white coating turning yellow)
  • Very brittle (poor adhesion)
  • Poor mechanical property
  • Gloss fluctuation
  • Burning or deterioration of the powder coating
  • Poor adhesion
  • Delamination of the powder coating

When it comes to primer and topcoat, it is always necessary to make sure that the primer is gelled rather than cured. If primer is allowed to fully cure, the following problems may occur:

  • Delamination issue
  • Inter-coat adhesion issue primer and top-coat

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