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Why use UV-resistant, waterproof, and anti-corrosion coating?
Release time:
2025-01-10 17:00
In PCB circuit boards, conformal coating can be considered indispensable. Currently, conformal coatings are mainly divided into solvent-based and UV-curable conformal coatings. As a manufacturer of UV-curable conformal coating resins, Boxing New Materials would like to share with you why UV-curable conformal coatings are worth using.
In PCB circuit boards, moisture is the most common and destructive factor. Excessive moisture can significantly reduce insulation between conductors, accelerate metal degradation, and cause corrosion of conductors. The green patina often seen on PCB circuit boards is caused by the copper layer reacting chemically with oxygen and water vapor in the air due to the lack of a conformal coating.
Besides moisture, the most common contaminants are likely chemical substances left over from the manufacturing process—such as solvents, release agents, metal particles, and marker inks—as well as residues inadvertently left behind during manual handling, including human skin oils, fingerprints, cosmetics, and food debris. Additionally, there are numerous contaminants present in the operating environment, such as salt spray, sand and soil, fuels, acids, and other corrosive vapors and molds.
The above-mentioned issues are precisely why it’s necessary to apply UV-resistant, moisture-proof, and anti-corrosion coatings. Applying such UV-resistant, moisture-proof, and anti-corrosion coatings to printed circuit boards and electronic components can reduce or largely eliminate the degradation of electronic performance and extend the product’s service life.
Compared to traditional solvent-based conformal coatings, the main advantages of UV conformal coatings are as follows:
First, safety and environmental protection: UV three-proof coating contains no solvents and causes no pollution to the ambient air.
Second, economic and cost-saving.
1. UV curing is fast, which facilitates automated production and improves production efficiency.
2. After curing, it can be inspected and handled immediately, saving space.
3. The UV-resistant, moisture-proof, and anti-corrosion coating requires only a very thin layer, saving material usage and reducing costs.
4. Single-component—no mixing required, easy to use.
Third, compatibility
1. Suitable for materials sensitive to temperature, solvents, and moisture;
2. The curing time and degree of cure are adjustable, making operation smarter and more convenient.
3. The adhesive can be applied repeatedly and cured multiple times.
4. For shadowed areas that are not exposed to UV light, a secondary moisture-curing process can be performed.
As a manufacturer and R&D provider of UV resins, Bosheng New Materials has launched a light-and-humidity dual-curing resin for UV three-proof coatings, such as... B-404、B-405 These models have received unanimous recognition from UV-resistant three-proof coating manufacturers. We welcome everyone to inquire and request samples for testing.
Disclaimer: The above content is sourced from the internet and is for reference only. If any infringement occurs, please contact us, and we will remove it promptly.
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