Differences between 3240 epoxy board and FR4 epoxy board

           Epoxy board produced by domestic general materials, we can call it 3240 epoxy board, while the epoxy board produced by foreign production materials, we can call it imported insulation board, also called FR4 epoxy board. But the two are ……

          

Epoxy board produced by domestic general materials, we can call it 3240 epoxy board, while the epoxy board produced by foreign production materials, we can call it imported insulation board, also called FR4 epoxy board. But the two are very different in terms of physical properties or chemical properties. Now I will briefly introduce to you:

1. 3240 epoxy board. The general full name: 3240 epoxy phenolic resin fiberglass cloth laminate. The glue used is epoxy resin with phenolic resin as curing agent. The temperature resistance is generally 155 degrees. It has good machinability, also very suitable for use in transformers and transformer oils. The density generally does not exceed the national standard: 1.9. But now there are many manufacturers in China, in order to save costs in the production process, adding in fillers, such as talcum powder. Its density is greatly increased. But it also greatly reduces its electrical performance, can only be applied to general insulation engineering.

Contact Us: serina@ztaero.com

2. FR4 epoxy board. It also use epoxy glue. However, it does not use phenolic resin as a curing agent. It is cured purely under high temperature conditions.The temperature resistance is generally 180 degrees or more. Machinability is very strong. For example, we have done experiments in the past, cutting FR4 with a cutting machine, the cutting machine should produce sparks. It can be seen that its machining performance. And the use will not crack, layering. The electrical performance is very strong, suitable for electronic circuit boards and copper clad laminates. The substrates are also all fine cloth, fiber cloth for electronics. Its general density is 1.85, with good chemical resistance.

Contact Us: serina@ztaero.com

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