Study on Properties of Epoxy Composites Modified by Functional Graphite Oxide and Polyurethane

Table 3

Storage modulus, glass transition temperature, and crosslink density of pure epoxy resin and different composites.

Sample	Storage modulus E0 (30°C, MPa)	Glass transition temperature Tg (°C)	Crosslinking density ν (mol/m^3)
EP	2212	71.05	3749.33
0.5%iGO/EP	2217	70.91	5399.27
PU/EP	1125	61.48	1236.29
0.5%GO/PU/EP	1339	63.59	1663.80
0.1%iGO-PU/EP	1364	66.23	1871.86
0.5%iGO-PU/EP	1857	72.82	5015.67
1.0%iGO-PU/EP	1528	67.6	2199.92