HEAT
CURED SILICONE RUBBER IOTA HCR 2960 U
Description: IOTA HCR 2960 U is a silicone master-batch, heat curing after the addition of a vulcanizing agent (chosen according to the processing method).
Applications:
IOTA HCR 2960 U is recommended for moulding, has
good compromise of mechanical properties.
Special
properties:
High resilience, low compression set;
Good appearance,anti-yellowing;
Good mechanical properties;
Easy processing, non-stick rollers, easy release;
Not
easy to structured after long-term storage;
Good thermal stability;
Wide
possibilities for blending with other master batch.
Characteristics:
Type
(in accordance with GB/T 5576-1997) ………………………………………… VMQ
Density
at 25°C,
g/cm3, approx………………………………………………………… 1.17
Natural
color……………………………………………………………………… translucent
Properties
after working:
After addition of 1.1%
2,5-dimethyl-2,5-di(tert-butylperoxy)hexane (at 45%), and vulcanization for 5
minutes at 175℃.
1.Mechanical property:
1.1 Without post-cure
Shore
A hardness, approx…………………………………………………… 64
Tensile
strength, MPa, approx……………………………………………… 8.8
Elongation at break, %, approx……………………………………………. 363
Modulus at 100% elongation, MPa, approx……………………………. 2.27
Tear strength, (ASTM D 624 Die B) kN/m, approx……………………. 15
Rebound resilience, %, approx……………………………………………… 56
1.2 Properties
after post-cure for 4 hours at 200°C
Shore
A hardness, approx…………………………………………………… 66
Tensile strength, MPa, approx………………………………………………. 8.1
Elongation at break, %, approx…………………………………………… 314
Modulus at 100% elongation, MPa, approx…………………………… 2.45
Tear strength (ASTM D 624 Die B)，kN/m,
approx…………………… 13
Compression set , (22 h/177℃/25%)
%, approx……………………… 15
Rebound
resilience, %, approx…………………………………………… 54
Packaging:
IOTA HCR 2960 U is delivered in 20 kg carton boxes.
Storage and shelf life: IOTA HCR 2960 U may be stored in its
original unopened packaging at a temperature below 40°C for up to 6 months from the date of manufacture marked clearly on the
packaging.
Past this date, IOTA no longer guarantees that the product
meets the sales specifications.
