What is epoxy fiberglass board

- Jun 14, 2018-

Epoxy glass fiber board is abbreviated as: FR-4, Epoxy Glass Fiber; glass fiber board is made of epoxy resin as binder, and electronic grade glass fiber cloth is used as a composite material for reinforcing materials. It does not contain harmful asbestos components. It has strong mechanical properties and dielectric properties, good heat resistance and moisture resistance, and good processability. Used in plastic molds, injection molds, machinery manufacturing, molding machines, drilling machines. Injection molding machine, motor, PCB, ICT fixture, countertop polishing pad. FR4 epoxy board has stable electrical insulation performance, good flatness, smooth surface, no pits, stable thickness tolerance, suitable for high performance electronic insulation requirements, such as FPC reinforcing board, high temperature resistant board of tin furnace, carbon film Film, exquisite star wheel, PCB test stand, electrical (electrical) equipment insulation partition, insulation pad, transformer insulation, motor insulation, deflection coil terminal board, electronic switch insulation board, etc. Epoxy fiberglass sheets are widely used in high performance electronic insulation products because of their excellent performance. Although some outsiders do not understand it, they have already received a lot of recognition in the industry. Basic characteristics

Vertical layer bending strength A: Normal: E-1/150, 150±5°C ≥ 340Mpa

Parallel layer impact strength (simple beam method): ≥230KJ/m

Insulation resistance after immersion (D-24/23): ≥5.0×108Ω

Vertical layer electrical strength (in 90±2°C transformer oil, plate thickness 1mm): ≥14.2MV/m

Parallel layer breakdown voltage (in 90 ± 2 ° C transformer oil): ≥ 40KV

Relative dielectric constant (50Hz): ≤5.5

Relative dielectric constant (1MHz): ≤5.5

Dielectric loss factor (50Hz): ≤0.04

Dielectric loss factor (1MHz): ≤0.04

Water absorption (D-24/23, plate thickness 1.6mm): ≤19mg

Density: 1.70-1.90g/cm3

Flammability: FV0

Process characteristics

(1) FR-4 process platen melting point (203 ° C)

(2) High resistance