Comparisons of primary material properties

In this section, experimental studies on the major properties of the synthetic elastomer have been conducted in comparison with several commercial ones. Dielectric constant, elastic modulus, and stress relaxation of elastomeric materials commercially available such as VHB4905/4910 and KE441 silicone are compared with the proposed one. 

The elastic modulus of each material was tested with an universal testing machine (LLoyd Co.). In the test all the specimens had the same size of 50[L] X 15[1T] mm, and the thicknesses of VHB4905, KE441 and synthetic elastomer were 0.5, 0.15, and 0.2 mm respectively (there is no correspondence between the thickness and the elastic modulus). All of them were measured under the condition of 10% strain. As displayed in Fig. 6.4, 

---