Pros And Cons Of Acrylic Resin Vs Silicone Resin Conformal Coating Material
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.
The product has excellent weather resistance and has good adaptability to natural environment. Excellent electrical insulation performance, can avoid the reaction between components and lines, special water repellent, can prevent components from being affected by moisture and humidity, good heat dissipation ability, can reduce the temperature of electronic components working, and prolong the service life.
This product is a one component heat curing epoxy with good adhesion to a wide range of materials. A classic underfill adhesive with ultra-low viscosity suitable for most underfill applications. The reusable epoxy primer is designed for CSP and BGA applications.
Conductive silver glue products cured with high conductivity, thermal conductivity, high temperature resistance and other high reliability performance. The product is suitable for high-speed dispensing, dispensing good conformability, glue point does not deform, not collapse, not spread; cured material moisture, heat, high and low temperature resistance. 80 ℃ low temperature fast curing, good electrical conductivity and thermal conductivity.
Product Category: Low temperature curing epoxy adhesive
This series is a one-component heat-curing epoxy resin for low temperature curing with good adhesion to a wide range of materials in a very short period of time. Typical applications include memory cards, CCD/CMOS program sets. Particularly suitable for thermosensitive components where low curing temperatures are required.
The product cures at room temperature to a transparent, low shrinkage adhesive layer with excellent impact resistance. When fully cured, the epoxy resin is resistant to most chemicals and solvents and has good dimensional stability over a wide temperature range.
Acrylic glue non-flowing, UV wet dual-cure encapsulation suitable for local circuit board protection. This product is fluorescent under UV(Black). Mainly used for local protection of WLCSP and BGA on circuit boards. Organic silicone is used to protect printed circuit boards and other sensitive electronic components. It is designed to provide environmental protection. The product is typically used from -53°C to 204°C.
The product is a one-component damp-cured reactive polyurethane hot-melt adhesive. Used after heating for a few minutes until molten, with good initial bond strength after cooling for a few minutes at room temperature. And moderate open time, and excellent elongation, fast assembly, and other advantages. Product moisture chemical reaction curing after 24 hours is 100% content solid, and irreversible.
0
0
DeepMaterial
Best epoxy adhesive glue manufacturer in China, our adhesives are widly used in consumer electronic, home appliance, smart phone, laptop and more industries. our R&D team customizes glue products for customers to help customers reduce costs and improve process quality. Glue products are delivered quickly and ensure their environmental friendliness and performance.
English
