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Epoxy resin applications

Jul 01, 2018

Epoxy resin applications

Introduction to the preface

The excellent physical and mechanical electrical and electrical insulation properties of epoxy resins, the bonding properties with various materials, and the flexibility of their use processes are not possessed by other thermosetting plastics. Therefore, it can be made into coatings, composite materials, casting materials, adhesives, molding materials and injection molding materials, and has been widely used in various fields of the national economy.

Coating application

The application of epoxy resin in coatings accounts for a large proportion, and it can be made into various varieties with different characteristics and purposes. Its commonalities:

1. Excellent chemical resistance, especially alkali resistance. 2. The paint film has strong adhesion, especially to metal.

3. Has good heat resistance and electrical insulation.

4. The paint film has good color retention.

However, the bisphenol A type epoxy resin coating has poor weather resistance, and the paint film is easy to be powdered and lost in the outdoor, and is not suitable for outdoor coatings and high decorative coatings. Therefore, epoxy resin coatings are mainly used as anticorrosive paints, metal primers, and insulating paints, but coatings made of heterocyclic and cycloaliphatic epoxy resins can be used outdoors.

Adhesive use

In addition to poor adhesion to non-polar plastics such as polyolefins, epoxy resins are used for various metal materials such as aluminum, steel, iron, copper; non-metallic materials such as glass, wood, concrete, etc.; and thermosetting plastics such as phenolic , Amino, unsaturated polyester, etc. all have excellent adhesive properties, so there is the name of all-purpose adhesive. Epoxy adhesives are important types of structural adhesives.


Concrete, wood, metal, glass, thermosetting

Low viscosity, can be cured on wet surfaces (or water), low temperature curability

Concrete repair (convergence of old and new surfaces), repair of external wall cracks, bonding of panels, connection of sewer pipes, floor bonding, reinforcement of building structures.

Electronic appliances

Metals, ceramics, glass, FRP and other potential solid plastics

Electrical insulation, moisture resistance, thermal shock resistance, heat resistance, low corrosion

Electronic Components, Integrated Circuits, LCDs, Optical Disks, Speakers, Magnetic Heads, Cores, Battery Boxes, Parabolic Antennas, Printed Circuit Boards


Metals, Thermosetting Plastics, FRP (Fiber Reinforced Plastics)

Heat resistance, impact resistance, moisture resistance, fatigue resistance, radiation resistance

Bonding of the same kind of metal and dissimilar metal, bonding of honeycomb core and metal, bonding of composite materials, and distribution boards

Automotive Machinery

Metals, Thermosets, FRP

Moisture resistance, rust resistance, oil surface adhesion, wear resistance (fatigue properties)

Body bonding, sheet steel reinforcement, FRP bonding, mechanical structure repair, installation

Sporting goods

Metal, wood, glass, thermoset, FRP

Durability, impact resistance

Snowboard, golf club, tennis racket


Metal, glass, ceramic

Low toxicity, no yellowing

Cultural relics, for household use

Electronic appliances

Due to its many unique advantages, such as high insulation performance, high structural strength and good sealing performance, epoxy resin has been widely used in the insulation and packaging of high and low voltage electrical appliances, motors and electronic components, and has developed rapidly. Mainly used for: 1. Pouring of electrical and motor insulation packages. Such as electromagnets, contactor coils, transformers, dry-type transformers and other high and low voltage electrical appliances as a whole sealed insulation package manufacturing. In the electrical industry has been rapid development. From atmospheric casting, vacuum casting has been developed to automatic pressure gel molding.

Modified epoxy resin

2. Widely used for potting insulation of devices equipped with electronic components and wiring. Has become an indispensable important insulating material for the electronics industry.

3. Electronic grade epoxy molding compounds are used for plastic encapsulation of semiconductor components. To develop very fast. Due to its superior performance, it has a tendency to replace traditional metal, ceramic and glass packaging.

4. Epoxy laminated plastics are widely used in electronics and electrical appliances. Among them, the development of epoxy copper clad laminates is particularly rapid and has become electricity.

One of the basic materials for the sub-industry.

In addition, epoxy insulation coatings, insulating adhesives and electrical adhesives are also used in a large number of applications.