Table 1. Chemical Compositions of Silica-Filled CR Compounds Prepared

Rubber compound	CR (phr)	Silica (phr)				Additive (phr)
		NS1	NS1	NS2	GR	Sulfur	TESPT
CR-Si-00	100	-				2.0
CR-MS1-20	100	20				0.5
CR-MS1-40	100	40				0.5
CR-MS1-60	100	60				0.5
CR-MS1-80	100	80				0.5
CR-MS2-20	100		20			2.0
CR-MS2-40	100		40			2.0
CR-MS2-60	100		60			2.0
CR-MS2-80	100		80			2.0
CR-MS3-20	100			20		2.0	4.0
CR-MS3-40	100			40		2.0	4.0
CR-MS3-60	100			60		2.0	4.0
CR-MS3-80	100			80		2.0	4.0
CR-GR-20	100				20	2.0
CR-GR-40	100				40	2.0
CR-GR-60	100				60	2.0
CR-GR-80	100				80	2.0

Contained in NS2 networked silica