Pros And Cons Of Acrylic Resin Vs Silicone Resin Conformal Coating Material

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Electronic devices are applicable in all industries, including telecommunications. Mobile phones are good examples of everyday devices that people rely on and are individually owned. The devices run our lives and carry very important data. The thought of such a device becoming dysfunctional can be devastating. Electrical device producers and manufacturers have had to devise measures to keep the circuit boards protected and running smoothly even when used in conditions that would otherwise be damaging.

Conformal coatings have become today’s solution for protecting PCBs from harsh elements. The truth is that electrical devices are used everywhere, and sometimes the conditions are not friendly. But with a protective film on the board and its components, the safety and durability of the devices are assured even under conditions that are not favorable.

Acrylic, silicone, polyurethane, and epoxy are some of the most commonly used coatings on circuit boards. When applied, they can offer protection against environmental stresses like moisture, humidity, and corrosion. The coatings also eliminate tin whiskers and offer a barrier to insulating components electrically. With this kind of protection, smaller electrical assemblies can be designed, and the mechanical support for all components can be increased. Solder joint fatigue is greatly improved.

Choosing the right conformal coating can be taxing, especially because their differences are minor, yet they can impact the results you get with each application. Acrylic and silicone resins are the most popular coatings types. By looking at their pros and cons, it becomes easier for you to decide which one best suits your application needs.

Acrylic resin

The acrylic conformal coating offers entry-level protection because it is cost-effective and offers protection against different contaminations. Its ease of removal makes it stand out from the rest, especially in repairs and reworks, but this also means it is not the best choice where solvent protection is necessary.

Pros

• The coating is easy to rework on

• It has a faster drying process

• The humidity resistance is good

• It offers easy viscosity adjustment

• It has high fluorescence levels

Cons

• Even with easily adjustable viscosity, maintaining it is difficult

• The coating is flammable

• It has higher probabilities of reversing under humidity and temperature stress

Silicone resin

Silicone coating offers protection against extreme temperature, humidity, moisture, and chemicals. This coating is resilient against vibrations and abrasion thanks to its tacky rubbery nature.

Pros

• It has high dielectric strength

• Its abrasion and moisture resistance is fair

• The coating has good humidity and UV resistance

• It is flexible, providing reliable impact and dampening protection

• It has low surface energy enabling penetration under the components

• It remains stable over a wide range of temperature

Cons

• Silicone coating has a short pot life

• It is not protective against solvent and solvent vapors

• Cross-contamination risks are high without proper storage

• Requires humidity to cure

• It has poor chemical resistance

When faced with a conformal coating need, sometimes all you have to do is get familiar with the basic material types and compare them with the protection needs you have. If unsure, you can seek the assistance of conformal coating experts. The experts can also handle the application process to reduce the possible defects with the wrong application.

For more about pros and cons of acrylic resin vs silicone resin conformal coating material,you can pay a visit to DeepMaterial at https://www.epoxyadhesiveglue.com/polyurethane-resin-vs-silicone-resin-conformal-coating-material-for-electronics/ for more info.