Types of electronic adhesives

Reading Volume：【 113 】

Time：【 2023-06-26 】

Epoxy adhesive
Epoxy adhesives are one of the most widely used adhesives in the electronics industry, with particularly good bonding strength and mechanical strength, temperature resistance and chemical resistance, and substrate applicability is equally wide. Depending on the type of product, different products can be room temperature curing can be heated and fast curing, after curing with very high bonding strength and mechanical strength, with excellent temperature resistance, chemical resistance. It can be used for bonding and fixing of electronic product parts and structural components, sealing protection, device protection, etc.

Acrylic Adhesive

Acrylic adhesives have excellent stability, transparency, good aging resistance and more excellent bonding strength, with multiple curing modes, able to bond a variety of parts, faster positioning and curing. High-performance acrylic adhesive, unique performance and a wide range of applications, designed for structural bonding, electronic wiring reinforcement, electronic components fixed sealing. It is characterized by good adhesion, toughness and good weather resistance. A variety of different viscosity, hardness, color options, easy to apply, fast curing, improve assembly efficiency.

Polyurethane Adhesive

Polyurethane adhesives are adhesives that contain urethane groups (-NHCOO-) or isocyanate groups (-NCO) in the molecular chain. Because it contains isocyanate and urethane groups with strong polarity and high chemical activity, it can have excellent chemical adhesion with materials containing active hydrogen, such as foam, wood, leather, fabrics, paper, ceramics and other porous materials, as well as metal, glass, rubber, plastic and other materials with smooth surfaces. Hydrogen bonding between polyurethane and the bonded material will enhance molecular cohesion, thus making the bond stronger. The versatility of polyurethane adhesives provides a solution to many bonding problems, and is particularly suitable for places where other types of adhesives cannot bond or are difficult to bond.

In addition, polyurethane adhesives have good toughness, adjustability, easy bonding process, excellent low temperature resistance and excellent stability. It is because of this excellent adhesive properties of polyurethane adhesives and adhesive adaptability to a variety of substrates, so that its field of application continues to expand, at home and abroad to become the fastest growing adhesive.

Silicone adhesive

With good sealing and bonding properties, tolerance of weather resistance, low temperature to -60 ℃, high temperature to 200 ℃, it can be easily, in the atmosphere can also be used under pollution. Depending on the type of product, it has excellent temperature resistance, insulation and other core properties, respectively, and also has good sealing and bonding properties. Widely used in electronic components fixed reinforcement, cavity sealing, waterproof protection, etc., but also for high temperature applications in the sealing, filling, bonding, encapsulation, such as high temperature kitchen appliances, thermoelectricity, air purifiers. Electronic adhesive categories are more, including hot melt adhesive, UV adhesive, bottom filling adhesive, instantaneous adhesive, patch adhesive, anaerobic adhesive and so on. Among them, PUR hot melt adhesive glue, bottom filling adhesive, PCB three-proof adhesive, UV adhesive, thermally conductive adhesive, conductive adhesive, patch adhesive, organic silicone and other applications, other electronic adhesive products application is relatively small. It is mainly used for electronic and electrical components bonding, sealing, potting, coating, structural bonding and SMT patch. According to rough statistics, an ordinary smartphone probably has more than 160 glue points, nowadays multi-camera phone has become a development trend, if each cell phone more than one main camera, just this point will let the world increase at least 15 tons of glue. If the new energy vehicles, TWS headphones, smart home and other products are all added, the amount of glue can be seen. 5G, smart home, new energy vehicles and other emerging technologies, rapid landing, is bound to drive the innovation of materials and manufacturing process, and adhesive as a traditional connection, follow the footsteps of modern industrial development will increasingly tend to diversification, multifunctionalization. In the electronic adhesive industry has injected unlimited vitality at the same time also put forward a new challenge.

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