Table 1.

Physical properties of the reinforcement materials.

Physical Properties	Flax Fibre	Ramie Fibre	Phenol–Formaldehyde Resin
Density (g/cm3)	1.50	1.56	1.3
Tensile strength (MPa)	800	1000	3800
Young’s modulus (GPa)	27.6	61.4–128
Elongation to break (%)	2.7–3.2	3.6–3.8	2
Thermal conductivity (W/mK)			0.25