Effect of Moisture Absorption Behavior on Mechanical Properties of Basalt Fibre Reinforced Polymer Matrix Composites

Table 3

Typical properties of the unsaturated polyester resin.

Appearance	Pale yellowish clear liquid
Viscosity at 25°C	500–600 cps
Volatile content	34–36%
Acid value	23–27 mg KOH/gm
Density at 25°C	1.12–1.13
Cross linking mixture	1.5% catalyst and 1.5% accelerator
Gel time at 25°C	15–25 min
Tensile strength	50 N/mm^2
Elongation at break	1.8%
Flexural strength	110 N/mm^2