fr4 epoxy fiberglass board, 3240 epoxy fiberglass board, which is better

The fr4 epoxy fiberglass board, 3240 epoxy fiberglass board, and the two types are all insulation boards. They all have insulation properties such as insulation strength, electrical breakdown withstand voltage, and high temperature resistance, but they are divided into high and low.

The fr4 epoxy glass fiber board is a plate-shaped insulating material made of glass fiber cloth impregnated with epoxy resin as an adhesive, dried and hot pressed. It has high mechanical properties, water absorption, flame retardancy and heat resistance, and stable dielectric properties after immersion in water. The fr4 epoxy glass fiber board has strict requirements during the manufacturing process, and its thickness tolerance is generally controlled within 0.02. The combustion level is V0, which is mostly used for electrical and electronic insulation parts, as well as insulation boards for airplanes, motor cars, transformers, and precision cruise ships.

3240 epoxy glass fiber board is made of glass fiber cloth bonded with epoxy resin and heated and pressurized. The model is 3240. It has high mechanical performance at medium temperature and stable electrical performance at high temperature. It is suitable for high-insulation structural parts for machinery, electrical appliances and electronics, with high mechanical and dielectric properties, good heat resistance and moisture resistance. Heat resistance grade F (155 degrees).

3240 epoxy fiberglass board and fr4 epoxy fiberglass board are basically similar in insulation strength, electrical breakdown withstand voltage, high temperature resistance and other insulation properties, but they are inferior in flame retardant grade and can only reach flame retardant V2.

Through the production process, materials and performance analysis of the above three kinds of insulation boards, it is not difficult to find that fr4 epoxy glass fiber board is higher than 3240 epoxy glass fiber board in various properties.