Understanding FR4 Fabric Glass in PCB Production
Introduction
FR4 fabric glass, woven from glass fibers, is a crucial material in the production of printed circuit boards (PCBs). Known for its insulation, thermal resistance, corrosion resistance, and high strength, FR4 fabric glass plays a vital role in ensuring the durability and functionality of PCBs.
Characteristics of FR4 Fabric Glass
- Excellent insulation properties
- High thermal resistance
- Corrosion resistance
- Non-combustible
- High temperature resistance
- High tensile strength
- Low moisture absorption
- Softness
Types and Applications
FR4 fabric glass comes in various types, each tailored for specific applications:
- Rove glass cloth: Strengthens building materials, road surfaces, and insulation materials.
- Medium yarn glass cloth: Reinforces plastic, rubber, metal, and wood materials, used in the production of vehicles and appliances.
- Fine yarn glass cloth: Creates high-strength composite materials for aviation and military applications.
- Alkali resistant glass cloth: Reinforces cement and gypsum products in construction.
- Silicate glass cloth: Ideal for high-temperature insulation in industrial and aviation settings.
Functions of FR4 Fabric Glass
FR4 fabric glass serves various functions in PCB production:
- Mechanical properties: High tensile strength determined by fiber diameter and length.
- Permeability: Non-capillary structure that enhances resin absorption.
- Dielectric performance: Good dielectric strength with controlled alkali content.
- Thermal performance: High heat resistance and stable properties up to 200℃.
- Chemical corrosion resistance: Resistant to solvents and environmental degradation.
FR4 fabric glass remains a cornerstone material in PCB production, ensuring boards are durable, reliable, and efficient.
