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Why use UV conformal coating?

Views: 0 Author: Site Editor Publish Time: 2025-02-14 Origin: Site

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In PCB circuit boards, conformal coatings are indispensable. Currently, conformal coatings are mainly divided into 2 types:solvent-based conformal coatings and UV conformal coatings. As a manufacturer of UV conformal coating resins, Bossin New Materials will explain why you should use UV conformal coatings.

For PCB circuit boards, moisture is the most common and destructive factor. Excessive moisture can significantly reduce the insulation between conductors, accelerate metal decomposition, and corrode conductors. The greenish corrosion we often see on PCB circuit boards is caused by the chemical reaction between the copper layer and oxygen and water vapor in the air without the coating of three-conformal paint.

In addition to moisture, the most common pollutants may be chemical substances left over from the manufacturing process, such as solvents, release agents, metal particles and marking inks, as well as contaminants accidentally introduced by humans, such as body oils, fingerprints, cosmetics and food residues; Furthermore, there are also many pollutants in the operating environment, such as salt spray, sand, fuel, acid and other corrosive vapors and mold.

The above problems are why UV conformal coating is needed. Applying UV conformal coating on printed circuit boards and components can reduce or significantly eliminate the degradation of electronic operating performance and extend the service life of the product.

Compared with traditional solvent-based conformal coatings, the main advantages of UV conformal coatings are as follows:

First, safety and environmental protection: UV conformal paint does not contain solvents and does not pollute the ambient air;

Second, economical and cost-saving

1. UV curing speed is fast, which is conducive to automated production and improves production efficiency;

2. After curing, it can be tested and transported, saving space;

3. Only a very thin layer of UV anti-coating is needed, which saves usage and reduces costs;

4. Single component, no need to mix, easy to use.

Third, compatibility

1. It can be used for materials that are sensitive to temperature, solvent and moisture;

2. The curing time and curing degree are adjustable, making the operation more intelligent and convenient;

3. Gluing can be repeated and cured multiple times;

4. For shadow areas that are not exposed to UV light, secondary moisture curing can be performed.

As a leading UV resin R&D and production manufacturer, Bossin has launched light and moisture dual-curing resins for UV conformal coatings, such as B-404 , B-405 and other models, which have been widely recognized by UV conformal coating manufacturers.Welcome inquires and samples requests for testing.

PCB UV conformal coating

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Guangdong Bossin Novel Materials Technology Co., Ltd. is a hi-tech enterprise specializing in the R&D, production, sales and technical services of UV/EB curable materials, with honors of National Hi-Tech Enterprise, Contract-honoring & Trustworthy Enterprise in Guangdong Province, etc. Standing on the forefront of UV/EB curable material industry, Bossin has successfully applied for dozens of invention patents. “Customer priority and quality optimization” are our consistent service concept.
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