The performance of FR4 board is different from 3240 epoxy fiberglass sheet

The raw materials and production process of the insulation board determines the quality of the finished products. The name difference for 3240 epoxy fiberglass sheet and glass epoxy fr4 is not big, but the performance and quality is a world of difference.

Composition of FR4 board: it is made of imported electronic grade alkali-free glass fiber cloth, impregnated with imported epoxy resin adhesive, adding corresponding imported flame retardant, adhesive and other additives, and processed by hot pressing.

Composition of 3240 epoxy fiberglass sheet: It is made of alkali-free glass fiber cloth soaked with epoxy phenolic resin adhesive and processed by hot pressing.

It can be seen from the above that the production materials of fr4 sheet and 3240 epoxy resin sheet have great differences, and their properties will also have great differences.

Properties of FR4 epoxy board: flame retardant UL94-VO grade, good mechanical properties at high temperature, good processing performance and insulation performance. Heat resistance rating (180 degrees).

Properties of 3240 epoxy fiberglass sheet: suitable for machinery, electrical and electronic high insulation structural parts, with high mechanical and dielectric properties, good heat resistance and moisture resistance. Heat resistance grade F (155 degrees).

There is a big gap between fr4 board and 3240 epoxy fiberglass sheet in terms of temperature resistance, flame retardant performance and mechanical strength. This article hopes to help you choose a more suitable insulation board.