Adhesive is a substance with good adhesive properties. It has sufficient strength after curing and can tightly bond the same kind, two or more materials and parts to each other through surface adhesion. Gaps can also be filled. Adhesive is a general term that includes other glues, mastics, glues, pastes, etc. Adhesives can also be described as natural or synthetic, organic or inorganic substances that connect two or more articles (or materials) together.

Most of our common adhesives are synthetic adhesives, which are composed of main agents and auxiliaries. The main agent is also called main material, base material or adhesive. It is a multi-component material that plays a basic adhesion role. In order to meet specific physical requirements Chemical properties also require the addition of various additives. Auxiliaries include curing agents, diluents, plasticizers, fillers, coupling agents, initiators, thickeners, antioxidants, polymerization inhibitors, stabilizers, complexing agents, emulsifiers, etc., and can also be used according to requirements and uses. Including ingredients such as flame retardants, foaming agents, defoaming agents, colorants and antifungal agents. For example, in order to make the main agent form a network or body structure to increase the cohesive strength of the rubber layer, a hardener or vulcanizing agent needs to be added; in order to accelerate hardening or vulcanization, a catalyst or vulcanizing agent needs to be added; in order to reduce the stiffness of the rubber layer and increase the toughness, it is necessary to add Add plasticizer, etc.


Adhesives can directly bond several materials together firmly. With the development of the synthetic chemical industry, there are many types. According to the chemical composition, they can be divided into the following types:


1. Acrylic adhesive, multiple curing methods, multiple parts bonding, faster positioning and curing, and more excellent bonding strength.


2. Polyurethane adhesive has strong adhesion on a variety of surfaces, making the bonding of the same or different materials stronger and more reliable.


3. Epoxy adhesives are particularly excellent in bonding strength and mechanical strength. Their temperature resistance and chemical resistance are also unconventional, and their applicability to base materials is equally wide.


4. Silicone adhesive has good sealing and bonding properties and broad weather resistance. It can handle low temperatures to -60°C and high temperatures to 200°C.


Depending on the product type, they have core properties such as excellent temperature resistance and insulation, as well as good sealing and bonding properties. It is widely used for fixed reinforcement, cavity sealing, waterproof protection, etc. of electronic components. It is also suitable for sealing, filling, bonding, and packaging in high-temperature applications, such as high-temperature kitchen appliances, thermoelectrics, and air purifiers.


Adhesives can be used in all aspects of daily life and production. For example, epoxy structural adhesive can be used for bonding and fixing electronic product parts and fasteners, RTV silicone can be used for fixing and reinforcing electronic components, and PUR hot melt adhesive can be used for mobile phones. Shell bonding, etc.


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