Property Optimisation of EPDM Rubber Composites Using Mathematical and Statistical Strategies

Table 2

Factors and levels (weight fraction) adopted for the 3³⁻¹ fractional factorial design used to define EPDM rubber composites.

Factor	Level (weight fraction)
	Low	Medium	High
Calcium carbonate (CC)	0.000	0.500	1.000
Paraffinic oil (PO)	0.400	0.600	0.800
Vulcanising accelerator (VA)	0.008	0.014	0.020