Furthermore, this loop only becomes visible at higher elongations
as compared to other materials.
Also, original and aged elongations
of CNSL were found highest (figure 6).
2) have shown that although HNBR/HXNBR/ZDA blends form high modulus vulcanizates, good elongation
properties can still be maintained.
Teknor Apex also has a developmental super-soft Tekron grade 96-E0807A-03NT with only 3 Shore A hardness, ultimate elongation
of 1100%, and tensile strength of 470 psi.
We remarked earlier about the lack of evidence for yielding on the elongation
data for a majority of the P-E polymers; even though the parent isotactic polypropylene, with enhanced crystallinity, shows a very marked yield at elongations
of the order of about 100% and a complete break at about 200%.
30, tensile strength at yield of 8600 psi, elongation
at break of 65%, flexural strength of 12,000 psi, flexural modulus of 374,000 psi, notched Izod of 0.
Higher modulus related to lower elongation
, with all but the lowest levels of peroxide and coagent giving higher modulus and lower elongation
values than the sulfur cure.
Formerly a plot (stress values at a given elongation
Therefore, the coagents which decreased elongation
the most also gave the most increase in modulus.
Tradeoffs in physical properties such as heat resistance, compression set, elongation
, tear, water and oil aging will also be evaluated.
The elasticity of a rubber is very different from the elasticity in a metal since it is still present at high elongations
Modulae at different strains namely 300, 400 and 500% elongations
for samples cured for different time durations at three curing temperatures namely [160, 170, 180 degrees C] are presented in figures 1-3 respectively.
The present studies were limited to comparisons of 100 and 200% modulus because many of the breaking elongations
were below 300%.
A mark was made on the chart paper when various known elongations
of the gage length were reached.
On the other hand, the elongations
of ACM-1 and ACM-2 decreased continuously, and after aging of 1,000 hours, they reached the minimum level.