Glass Fiber

E-glass fiber is the most common reinforcing material for fibre composites; glass fibers are inexpensive and have excellent mechanical, thermal, dielectric and chemical properties. The strength properties are similar to those of metals (e.g. aluminium alloys), although the specific weight is lower than that of metals. Fiberglass are non-combustible, temperature-resistant up to approx. 700 °C and resistant to most chemicals and weather influences. The price of glass fibres is low compared to other reinforcing fibres.
The versatility of glass as a fiber makes it a unique industrial textile material. Fiber glass in fabric form offers an excellent combination of properties from high strength to fire resistance. Wide ranges of yarn sizes and braided patterns provide huge number of design potential allowing the end user to choose the best combination for material performance, economics and product flexibility. The combination of properties such as low moisture absorption, high strength, heat resistance and low dielectric constant makes fiber glass fabrics ideal as a reinforcement for printed circuit boards and insulating varnishes.

General Characteristics Glass Fiber

- high surface weight ratio
- amorphous structures
- possible same properties in fiber longitudinal and transverse directions
- In contrast to carbon fiber, glass can undergo more elongation before it breaks
- semi-rigid material
- no stretch or shrink after exposure extremely high or low temperatures returns toloads near the breaking point almost back to its original shape.
- low moisture absorption and water resistant
- no physical or chemical change in water contact allows
- Flexibility in the design of low price
- not flammable or oxidising

- retains approx. 25% of its original strength after short-term loading above approx. 700 °C
- little or no response to most chemicals
- no mildew, rot or not rot
- resistant to hydrofluoric acid, hot phosphoric acid and strong alkalis
- excellent material for electrical insulation
- low thermal expansion coefficient
- good thermal insulation
- high thermal conductivity
- no contact corrosion due to electrochemical effects