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The difference between epoxy sheet and bakelite board

by:ZTELEC     Time: 2025-01-20

There are significant differences between epoxy sheets and bakelite boards in many aspects, which mainly come from factors such as their materials, performance, application areas and costs.

1. Different materials

Epoxy board is a composite material made of epoxy resin, which is then heated and pressed. It is usually made of multiple layers of fiberglass cloth impregnated with epoxy resin and laminated together. It has high mechanical and dielectric properties, good heat and moisture resistance, and good machinability.

Bakelite board is a commonly used insulation material. It is a phenolic laminated paperboard made from bleached wood pulp paper impregnated with phenolic resin and then heat-pressed. It has the characteristics of insulation, no static electricity, wear resistance and high temperature resistance. It plays an important role in the power industry and electronic engineering.

epoxy sheet

2. Different performance

In terms of physical properties, there are significant differences between epoxy sheets and bakelite boards. First, the hardness of epoxy sheet is higher than that of bakelite board, which makes it more durable when subjected to pressure or impact. In addition, the bending strength and heat resistance of epoxy sheet are also better than that of bakelite board. Epoxy sheets can maintain stable performance in high temperature environments, have a high heat deformation temperature, and can be used for a long time at around 200°C. Although bakelite board also has a certain heat resistance, it is slightly inferior in comparison.

In terms of electrical performance, epoxy sheet also performs well. It has extremely high electrical insulation and can remain stable even in high humidity or high temperature environments. This makes epoxy sheet an indispensable insulation material in electronic and electrical equipment. Although bakelite board also has excellent electrical properties, it may not be as stable as epoxy sheet under certain extreme conditions.

In addition, the dimensional stability of epoxy sheet is also better than bakelite board. In high temperature or humid environment, the shape and size of epoxy sheet change little, which ensures processing accuracy and reliability. Bakelite board may warp or deform under certain conditions, affecting processing accuracy and use effect.

bakelite board

3. Different application fields

Epoxy sheets are widely used in many fields such as electronics, electrical and mechanical, especially in PCB manufacturing.

Bakelite boards are mainly used for insulation manufacturing of electrical equipment and motors, such as motor slots, partitions and switchgear.

In addition to the above differences, there are also certain differences between epoxy sheets and bakelite boards in terms of cost and price. However, the price difference between the two is not much.

There are significant differences between epoxy sheets and bakelite boards in terms of materials, performance, application areas, and costs. These differences make the two materials have their own advantages and disadvantages in different application scenarios. With the advancement of science and technology and the development of industry, the requirements for material performance will become higher and higher. Therefore, in the future, the research and development of epoxy sheets and bakelite boards will focus more on improving the comprehensive performance of materials and reducing costs.

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