Reinforced, Extruded, Isotropic Magnetic Elastomer Composites: Fabrication and Properties

Table 2

Rheological properties of magnetorheological rubber mixtures filled with carbon black in different contents (0-20 phr) prepared by traditional rubber processing and extrusion process.

Sample	Carbonyl iron powder content [phr]	Carbon black content [phr]	[dNm]	ΔM [dNm]	t90 [min]
Composites prepared using traditional rubber processing
Reference sample	-	-	0.72±0.02	8.6 ±0.2	16.7±0.3
	60	-	0.81±0.05	10.4±0.1	16.0±0.2
Carbon black filled sample	60	5	0.92±0.04	10.6±0.2	16.0±0.3
		10	0.95±0.05	10.8±0.1	16.2±0.4
		15	0.98±0.07	12.0±0.3	16.2±0.4
		20	1.02±0.06	13.8±0.1	16.4±0.2
Composites prepared using extrusion process
Reference sample	-	-	0.63±0.03	8.6±0.2	16.7±0.4
	60	-	0.81±0.05	10.2±0.2	15.9±0.5
Carbon black filled sample	60	5	0.71±0.05	11.3±0.3	15.8±0.4
		10	0.69±0.06	11.9±0.1	15.9±0.3
		15	0,98±0,05	12,9±0,1	16,0±0,3
		20	1,00±0,04	13,3±0,2	16,3±0,4

: minimum torque;
ΔM: torque increase;
t₉₀: optimum curing time.