Adhesive is a kind of organic or inorganic, natural or synthetic substance that connects the same or two or more homogeneous or heterogeneous parts together through interface action and has sufficient strength after curing. Electronic adhesive is a subdivision of adhesive, mainly used for bonding, sealing, potting, coating, structural bonding, co-lamination and SMT patch of electronic and electrical components.
Electronic adhesives include EVA hot melt adhesive, organic silicone, epoxy adhesive, UV adhesive, PUR adhesive, conductive adhesive, instant adhesive, polyurethane adhesive, anaerobic adhesive, etc. Among them, silicone, EVA hot melt adhesive, and PUR adhesive are used the most, and other electronic adhesive products are used relatively less.
The most common electronic adhesives are divided into five categories: conductive silver adhesive, potting adhesive, patch red adhesive, cofferdam filling adhesive, and bottom filling adhesive.
The main links of electronic adhesive production include material pretreatment, batching, mixing, filtering, defoaming, packaging and other production process links. Material pretreatment and mixing are the main process links. This process needs to ensure that the materials are highly dispersed and uniform to ensure product quality. In addition, in order to cooperate with the production of different types of products, it is necessary to fully consider the different equipment materials, protective gas types, temperature and humidity control and process operation sequence corresponding to different products, and make corresponding adjustments.
Electronic adhesives are widely used in the electronics industry. They are not only used for fixing, but also need to be conductive, heat-conductive, insulating, impact-resistant, sealing, and protect substrates. The following introduces representative electronic adhesives in different application scenarios.
Car Batteries
Epoxy resin glue is widely used in the electronics industry due to its excellent bonding performance and electrical insulation properties. It is suitable for bonding and encapsulating various substrates. It is not only highly versatile and has excellent bonding properties, but also has a wide range of applicability and can meet diverse industrial needs. It is easy to use and has good electrical properties, including a low dielectric constant and high electrical insulation strength. In addition, epoxy resin glue also has good heat resistance, chemical corrosion resistance and aging resistance, which enables it to maintain long-term stability in harsh electronic environments. These characteristics make it the preferred material in the electronic assembly and repair process.
Camera module packaging
Silicone is a packaging material with excellent flexibility, a wide operating temperature range, good electrical insulation properties, and resistance to atmospheric pollution. It performs well in high-frequency, high-temperature working environments and is resistant to pollutants in the atmosphere, making it very suitable for camera module packaging. Although silicone has average adhesion, these properties make it an ideal choice for camera module packaging, especially in applications that require the material to have high reliability and stability. In addition, silicone's temperature resistance and aging resistance enable it to provide long-term protection and stable performance in camera module packaging.
Control System
Hot melt adhesive is an adhesive that melts and flows when heated. It has the characteristics of fast curing and easy operation, which is very suitable for application scenarios that require quick assembly. Since it usually has a lower bonding strength after curing, it is suitable for those occasions where the bonding strength requirements are not very high. In addition, hot melt adhesive can maintain good performance at lower operating temperatures, which makes it very suitable for industrial control systems, where temperature control and thermal management are key factors. These characteristics of hot melt adhesive, such as fast bonding, easy automation operation and good cost-effectiveness, make it very popular in the assembly and maintenance of industrial control systems.
Semiconductor packaging
Acrylic adhesive is an ideal choice for semiconductor packaging due to its excellent electrical insulation performance, excellent aging resistance and good transparency. This adhesive can cure quickly, shorten the production cycle and improve production efficiency. Its excellent bonding strength and flexibility make it stable under various environmental conditions, and it is especially suitable for semiconductor packaging applications that require extremely high performance and reliability of electronic devices. In addition, the heat resistance and chemical corrosion resistance of acrylic adhesive make it play an important role in the protection and fixation of semiconductor devices, ensuring the long-term stable operation of devices under high frequency, high temperature or harsh environment.
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