Figure sents the average value for flexural modulus and flexural strength as the functions of Go content. For comparison purpose, value for each elastic modulus and flexural strength are shown in Table 1. Figure 1 shows that increasing Go content up to 0.3 wt% resulting in a positive mechanical improvement for both values. The results showed increasing around 55 and 35% in flexural strength and flexural modulus for the addition of 0.3 wt% Go. A previous study has recommended that Go has superior strength (Medhekar et al. 2010). This may be good indicators for better cross linking, uniform dispersion and good interfacial interaction via covalent bonding between Go and the matrix. Good interfacial bonding facilitates the effectiveness of load transfer (Glaskova et al. 2012) However, further addition of Go to 0.5 wt% has decreased Athe flexural strength and flexural modulus. At higher Go content, the filler structures are in a cluster form because oxy of a weak distribution. This may be attributed to poor