The difference between 3240 epoxy board and fr4 epoxy board

1. The main material of fr4 epoxy board is imported prepreg. The colors are white, yellow and green. It still has high mechanical strength at room temperature of 150℃. It has good electrical performance in dry and wet state, flame retardant, and is used for electrical and electronic products. Insulation structural parts in other industries are carefully manufactured with imported raw materials, domestic presses and standard processes;

The fr4 epoxy board has stable electrical insulation performance, good flatness, smooth surface, no pits, and thickness tolerance standards. It is suitable for products with high-performance electronic insulation requirements, such as FPC reinforcement boards, PCB drilling pads, and glass fiber mesons. , Potentiometer carbon film printed glass fiber board, precision star gear (wafer grinding), precision test plate, electrical (electrical) equipment insulation stay spacer, insulation backing plate, transformer insulation plate, motor insulation, grinding gear, electronic switch Insulation board, etc.

2. 3240 epoxy board is generally called 3240 epoxy phenolic glass cloth laminate. It is made of electrical glass cloth impregnated with epoxy resin, dried and hot pressed. Epoxy resins generally refer to organic polymer compounds containing two or more epoxy groups in the molecule. Except for a few, their relative molecular masses are not high.

The molecular structure of epoxy resin is characterized by the active epoxy group in the molecular chain. The epoxy group can be located at the end, in the middle or in a cyclic structure of the molecular chain. The cured epoxy resin system is an excellent insulating material with high dielectric properties, surface leakage resistance, and arc resistance.

3240 epoxy board is widely used in mechanical, electronic and electrical applications. It is suitable for mechanical, electrical, electronic, electrical and other fields. It is also used in the processing of insulating parts and processed into various insulating parts. Equipment insulation structural parts.