Epoxy resin for electronic products
The application of epoxy resin in electronic products has gained significant attention due to its outstanding electrical properties, making it an ideal choice for packaging materials of electronic components. As the electronics industry continues to advance, epoxy systems are continuously evolving to meet the demands for improved production efficiency, enhanced reliability, and reduced costs. This versatile material can be transformed into coatings, composite materials, casting materials, adhesives, molding materials, and injection molding materials, finding widespread use across various sectors of the economy. Particularly in the realm of electronic and electrical products, epoxy resin is experiencing rapid growth and finds itself at the forefront of innovation.
There are various types and technical requirements for epoxy potting materials, which are widely utilized in different applications. They can be categorized into two types based on the curing conditions: room temperature curing and heating curing. In terms of dosage form, there are two-component, one-component, and multi-component options available. For epoxy potting materials cured at room temperature, they are typically two-component formulations that do not require additional heating after potting. This makes them convenient to use with minimal equipment. However, these materials have higher viscosity during the composite operation, resulting in poor infiltration and a short application period. Furthermore, automation of production becomes challenging, and their heat resistance and electrical properties are not notably high. Consequently, they are primarily suitable for low-voltage electronic devices or situations that involve heating curing.
Insulating parts made of electronic epoxy resin are suitable for use within the temperature range of -60 to 100℃. By utilizing new resins, special curing agents, and fillers, these parts can be customized to resist adhesive requirements in extreme conditions such as ultra-low temperatures (-196℃) and high temperatures (350℃). Additionally, they can be engineered to possess conductivity, magnetic properties, thermal resistance, spot welding capabilities, strain resistance, photosensitivity, flame retardancy, and even underwater adhesive properties. These specialized adhesives are designed to be low in toxicity, without any negative physiological effects, and harmless to the human body. They can also be formulated to emit minimal odor, making them environmentally friendly and non-toxic. However, it is worth noting that the epoxy resin's inherent brittleness and lack of toughness may necessitate the addition of modifiers to improve these properties. Nonetheless, due to the exceptional advantages offered by epoxy resins in electronic applications, such as high insulation performance, structural strength, and excellent sealing capabilities, they have gained significant traction in the insulation and packaging of various high and low voltage electrical appliances, motors, and electronic components. This field is experiencing rapid development. Specifically, these insulating parts find extensive usage in electrical appliances and motor insulation packaging. Examples include electromagnets, contactor coils, transformers, dry type transformers, and other fully sealed insulation packages for high and low voltage electrical appliances.
