Mechanical properties of fibers used in polymer composites
Mechanical properties of some common fibers used in polymer composites are indicated below:
|Fiber||Tensile Strength||Tensile Modulus (Young Modulus)||Elongation
|(MPa)||(103 psi)||GPa||(106 psi)||(kg/m3)||(lb/in3)|
|AS-4 PAN-Based Carbon||4000||578||245||35.5||1.6||1800||0.065|
|IM-7 PAN-Based Carbon||4900||710||317||46||1.7||1744||0.063|
|P120 Pitch-Based Graphite||2250||325||827||120||0.27||2187||0.079|
- E-glass - A low alkali borosilicate glass with good electrical and mechanical properties and good chemical resistance. The most widely used in fibers for reinforcing plastics.
- S-Glass is a stiffer/stronger version of E-glass which is also used in polymer matrix composites. S-Glass is generally used for polymer matrix composites that require improved mechanical properties compared to E-glass based composites.
- PAN-Based Carbon fibers are made of polyacrylonitrile (PAN). Carbon
fibers are high-strength and high-
stiffness materials used in advanced constructions like military aircrafts etc.
- Alumina/Silica or trademark Saffil is produced as a fiber and was developed for thermal insulation at higher temperatures.
- Kevlar 29 is used in industrial applications such as cables, asbestos replacement, brake linings, and body armor.
- Kevlar 49 is considered to have the greatest tensile strength of all the aramids, and is used in applications such as plastic reinforcement for boat hulls, airplanes, and bikes.