Product Overview
Wet process glass fiber reinforced phenolic moulding compound is a high-performance thermosetting composite material, manufactured by wet impregnation process. Different from dry-process general phenolic molding powder (bakelite powder), it adopts liquid phenolic resin fully impregnated with continuous/short-cut glass fiber strands, matched with functional fillers and additives through homogeneous wet mixing, kneading, and low-temperature curing granulation. The wet mixing technology ensures every glass fiber is fully wetted and wrapped by resin, with no dry fiber or voids inside the material. It features ultra-high mechanical strength, excellent structural uniformity, superior heat resistance and electrical insulation, and is the preferred material for high-load, high-precision, long-life industrial components.
Core Advantages
1. Granular Form & Excellent Molding Performance
Uniform granule size ensures stable feeding, good fluidity, no dust, suitable for automatic injection and compression molding, greatly improving production efficiency and finished product consistency.
2. Ultra-high Mechanical Strength
Wet impregnation realizes perfect combination of resin and glass fiber, providing outstanding flexural strength, impact resistance and structural stability, suitable for long-term high-load working conditions.
3. Superior Heat & Dimensional Stability
Dense internal structure brings low shrinkage, low water absorption and excellent thermal stability. Hardly deformed under high temperature and humid environment.
4. Reliable Electrical Insulation
Uniform fiber-resin distribution ensures stable dielectric strength and tracking resistance, ideal for high-voltage electrical and electronic components.
Key Technical Parameters
| Property | Specification | Test Standard |
|---|---|---|
| Density | 1.70–1.90 g/cm³ | ISO 14526-2 |
| Martens Heat Resistance | ≥200°C | ASTM D648 |
| Flexural Strength | ≥60 MPa | ISO 14526-2 |
| Impact Strength (Unnotched) | ≥30 kJ/m² | ISO 14526-2 |
| Volume Resistivity | ≥1.0×1010Ω·m | IEC 60093 |
| Dielectric Strength | ≥14 MV/m | IEC 60243 |
| Mold Shrinkage | ≤0.15% | ISO 14526-2 |
| Water Absorption | ≤20 mg | ISO 62 |
Application Fields
1. Electrical & Electronics: High-strength high-voltage insulation parts, motor commutators, breaker components, relay structural parts.
2. Automotive Industry: Automotive motor parts, clutch components, engine high-temperature structural parts, new energy vehicle insulating support parts.
3. Mechanical Equipment: High-load structural parts, anti-fatigue mechanical components, precision instrument parts and corrosion-resistant pump valve parts.
Processing & Supply
Processing Type: Granular material suitable for automatic injection molding and compression molding. Molding temperature: 150–175°C, molding pressure: 25–40 MPa.
Certification: RoHS compliant, UL94 V-0 flame retardant, fully meets international insulation and mechanical standards.
Supply: Factory direct granular products, stable batch quality, customizable particle size and formulas.
