Table 3.

Mechanical properties of pure NR and NR/SiO₂ nanocomposites

SiO2 loading (wt%)	0	0.5	1.0	2.5	4.0	6.5	8.5
Tensile strength (Mpa)	15.1	18.0	19.8	22.7	26.3	21.0	1.06
Tensile modulus (Mpa)
100% elongation	0.63	1.05	1.50	1.90	2.26	1.87	0.30
200% elongation	0.96	1.54	2.03	2.48	3.08	2.35	0.65
300% elongation	1.27	2.14	3.15	4.17	5.08	3.71	0.99
Elongation at break (%)	995	963	919	857	730	568	384
Tear strength (kN/m)	37.1	41.9	53.0	59.0	61.4	70.7	30.2