This material is made of improved phenolic resin impregnated with alkali-free glass yarn, suitable for use as raw material for thermoforming products. The products have high mechanical strength, good insulating properties, corrosion resistance, moisture resistance, mildew resistance, lightweight components and other characteristics, suitable for pressing the requirements of high-strength mechanical components, complex shape of the electrical components, radio parts, high strength mechanical and electrical parts and rectifier (commutator), etc., and its products also have good electrical properties, especially for hot and humid zones.
Bulk phenolic glass fiber molding compound is a thermosetting molding compound made of phenolic resin as the base material, reinforced with glass fibers, and made by impregnation, mixing and other processes. Its composition usually includes phenolic resin (binder), glass fiber (reinforcing material), mineral filler and other additives (such as flame retardant, mold release agent, etc.).
Performance Characteristics
(1) Excellent mechanical properties
High bending strength: some products can reach 790 MPa (far exceeding the national standard ≥ 450 MPa).
Impact resistance: notched impact strength ≥ 45 kJ/m², suitable for parts subject to dynamic loads.
Heat resistance: Martin heat-resistant temperature ≥ 280 ℃, good dimensional stability at high temperatures, suitable for high-temperature environmental applications.
(2) Electrical insulation properties
Surface resistivity: ≥1×10¹² Ω, volume resistivity ≥1×10¹⁰ Ω-m, to meet the high insulation needs.