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Three types of potting glue commonly used in the electronics industry


Potting glue is no stranger to us, because we will use various glues in our lives or work. Potting glue can be used in the construction industry, but today we are going to talk about potting glue used in the electronics industry.

Potting glue is also called electronic glue. Its main functions are bonding, sealing, potting, coating, etc. It thus protects electronic and electrical components from moisture, dust, corrosion, and shock, and improves performance and stability parameters. Moreover, it is liquid before vulcanization, making it easy to pour and use.

So now that you know about potting glue, what are the most commonly used potting glues in the electronic world?

Most of today's electronic products are potted with silicone potting glue, polyurethane potting glue and epoxy potting glue. Because these three glues can be selected for different products. Its adhesion is very good and it is also very good in terms of sealing and waterproofing. The following is a detailed explanation of the differences between these three potting adhesives.

1. Silicone potting glue

Long-term and effective protection of sensitive circuits and electronic components undoubtedly plays an increasingly important role in today's precision and demanding electronic applications. Two-component silicone potting materials are undoubtedly one of the best choices. Silicone potting materials have stable dielectric insulation, which is an effective guarantee to prevent environmental pollution. At the same time, it can eliminate the stress caused by impact and vibration within a wide range of temperature and humidity.

2. Polyurethane potting glue

Polyurethane elastic potting material overcomes the shortcomings of brittleness of commonly used epoxy resin and low strength and poor adhesion of silicone resin. It has excellent water resistance, heat resistance, cold resistance, UV resistance, acid and alkali resistance, and high and low temperature impact resistance. , moisture-proof, environmentally friendly, and cost-effective, it is an ideal potting protection material for electronic components.

3. Epoxy resin potting glue

Epoxy potting glue has good fluidity and easily penetrates into the gaps of the product; it can be cured at room temperature or medium temperature, and the curing speed is moderate; there are no bubbles after curing, the surface is smooth, shiny, and has high hardness; the cured product has good acid and alkali resistance. It has good moisture-proof, waterproof, oil-proof and dust-proof properties, and is resistant to humidity, heat and atmospheric aging; it has good electrical and physical properties such as insulation, pressure resistance and high bonding strength.

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