High Temperature Glass Fiber

E-glass fiber is the most common reinforcing material for fiber composites; glass fibers are inexpensive and have excellent mechanical, thermal, dielectric and chemical properties. The strength properties are equivalent to those of metals (e.g. aluminum alloys), with a specific gravity lower than that of metals. Glass fibers are incombustible, temperature resistant up to approx. 700 °C and resistant to most chemicals and weather conditions. The price of glass fibers is low compared to other reinforcing fibers.

General properties of high temperature glass fiber:

- high surface weight ratio
- weight ratio amorphous structures possible same properties in longitudinal and transverse fiber direction
- unlike carbon fiber, glass can be subjected to more elongation before it breaks
- dimensionally stable material
- no elongation or shrinkage after exposure to extremely high or low temperatures after stresses near the breaking point
- low moisture absorption and water resistant
- no physical or chemical change upon contact with water
- design flexibility due to low price
- not flammable or oxidizing

- continuous load up to 1200 °C
- no or only slight reaction to most chemicals
- no mold growth, does not rot or decay
- resistant to hydrofluoric acid, hot phosphoric acid and strong alkalis
- excellent material for electrical insulation
- low coefficient of thermal expansion
- good thermal insulation
- high thermal conductivity
- no contact corrosion due to electrochemical effects