What You Need To Know About Adhesives For Potting Electronics
Potting is, in simple terms filling a pot with an adhesive, which is a potting compound, to create a layer that protects electrical components from external damage. The components to be potted are placed in the housing before the liquid adhesive flows all over, covering them entirely. Apart from covering the entire surface, potting can also be done so that only an individual component or area is covered in the resin.
Circuit boards are commonly potted electrical components, especially because they have small and sensitive parts like resistors, microchips, diodes, and transistors. They can get damaged when exposed to moisture, vibration, corrosion, thermal shock, and even dirt and dust. When exposed to moisture, short-circuiting happens, chemicals corrode the components, and vibrations can detach them and render them useless.
Another reason why electronics are potted is to make spying or copying of circuitry hard by competitors or other interested parties with ill motives. Criminals have a harder time tampering with potted electronics, especially card readers and smart chips.
For electronic potting, adhesives with less viscosity are best as they allow filling around the components easily. They also reduce the chances of trapping air bubbles, which in turn interferes with the performance and appearance of the pot. You can settle for two-part epoxies, modified versions, or polyurethane adhesives for the best potting results. If you need quick curing, UV adhesives are best and won't require any mixing before use. The UV adhesives, however, have the challenge of not curing all through and shadowing, so they are not always ideal for potting adhesives.
When choosing adhesives for potting electronics, you can use the following questions to make the most suitable product for your application requirements and needs.
• Will the potting material flow sufficiently and coat even the tiny intricate components effectively?
• How quickly is full curing going to take, and how ideal is that time for the project?
• Is the potting process better done manually or automatically? And can the two-part products be incorporated into the process?
• Is clear adhesive best for the application, or are the opaque versions better?
• Is the protection only needed to keep environmental hazards at bay, or is there a need for added protection against product copying and spying?
• What level of hardness is needed? Should it be softer to keep components less stressed or harder to reduce tampering?
• How costly is the potting compound? Is it practical enough for the project?
• How is the quality of the material? Is it durable enough against the lifespan of the electronics?
When looking for a potting adhesive that will give you the best performance in protecting the electronics, ensure you choose one with the following:
• Good resistance to chemicals and moisture
• Low shrinkage and outgassing
• Non-corrosive formulation
• Specific approvals and meets compliance requirements
• Electrical insulation
• Reliable thermal conductivity
• Resistance to vibrations and impacts
• Resistance to thermal shock
DeepMaterial is a manufacturing company offering top-quality adhesives suitable for potting electronics. The company's wide range of adhesives, potting compounds, and resins makes it a one-stop solution for all your bonding and encapsulating needs. Let the experts advise you on what products are best for what applications.
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.
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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.
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