Effects of Different Montmorillonite Nanoclay Loading on Cure Behavior and Properties of Diglycidyl Ether of Bisphenol A Epoxy

Table 4

Summary of isothermal cure studies.

Samples	Parameter	Isothermal temperature, °C
		60	70	80	90
0 wt.% MMT		1.15 ± 0.053	1.66 ± 0.096	1.72 ± 0.065	2.44 ± 0.12
		0.311 ± 0.029	0.26 ± 0.052	0.298 ± 0.035	0.308 ± 0.068
	(×10^−3)	24.0 ± 2.0	33.0 ± 4.0	73.0 ± 6.0	94.0 ± 14.0
	, min	32.53	19.93	13.37	12.70
	ΔH, J/g	301.10	444.04	351.36	429.27
1 wt.% MMT		1.43 ± 0.044	1.76 ± 0.063	1.96 ± 0.11	1.55 ± 0.05
		0.316 ± 0.024	0.252 ± 0.034	0.222 ± 0.062	0.284 ± 0.029
	(×10^−3)	23.0 ± 1.0	39.0 ± 3.0	59.0 ± 8.0	141.0 ± 9.0
	, min	30.55	15.17	12.42	11.20
	ΔH, J/g	374.55	408.9	432.21	329.18
2 wt.% MMT		1.61 ± 0.05	1.70 ± 0.12	2.09 ± 0.10	2.70 ± 0.08
		0.232 ± 0.03	0.036 ± 0.067	0.158 ± 0.056	0.281 ± 0.045
	(×10^−3)	33.0 ± 2.0	61.0 ± 4.0	82.0 ± 7.0	127.0 ± 12.0
	, min	15.85	10.60	9.70	9.82
	ΔH, J/g	442.54	460.68	473.95	511.97
3 wt.% MMT	n	1.53 ± 0.054	1.94 ± 0.68	2.03 ± 0.072	2.25 ± 0.073
	m	0.250 ± 0.023	0.275 ± 0.037	0.232 ± 0.039	0.187 ± 0.040
	(×10^−3)	27.0 ± 2.0	52.0 ± 4.0	72.0 ± 6.0	105.0 ± 9.0
	, min	20.55	13.20	10.03	8.92
	ΔH, J/g	446.17	386.72	478.19	407.58