Influence of Filler from a Renewable Resource and Silane Coupling Agent on the Properties of Epoxidized Natural Rubber Vulcanizates

Table 5

Storage moduli at 20°C, loss moduli, and maximum damping factor of gum and filled ENR-25 vulcanizates with 30 phr of RHA or silica, with and without silane coupling agent (Si69).

Sample	Storage modulus (MPa)	Loss modulus (×10^5) (MPa)	Maximum damping factor,
Gum	746.96	2.87	2.77
RH	841.64	3.22	2.69
RH-Si69	1428.10	3.91	1.96
	2927.50	3.25	1.34
-Si69	3017.50	3.58	1.41