HEAT CURED SILICONE RUBBER IOTA HCR 2930 U
Description: IOTA HCR 2930 U is a silicone master-batch, heat curing after the
addition of a vulcanizing agent (chosen according to the processing method).
Applications: IOTA HCR 2930 U is recommended for buttons, O-rings, gaskets, seals, rubber rollers and
other requirements of high resilience and low compression set products.
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…………………………………………………………
1.07
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…………………………………………………… 33
Tensile strength, MPa, approx……………………………………………… 4.8
Elongation at break, %, approx……………………………………………. 437
Modulus at 100% elongation, MPa, approx…………………………. 1
Tear strength, (ASTM D 624 Die B) kN/m, approx…………………. 9.2
Rebound resilience, %, approx……………………………………………… 66
1.2 Properties after post-cure for 4 hours at 200°C
Shore A hardness, approx………………………………………………… 32
Tensile strength, MPa, approx………………………………………….. 4.4
Elongation at break, %, approx………………………………………
412
Modulus at 100% elongation, MPa, approx………………………… 0.7
Tear strength (ASTM D 624 Die B)，kN/m, approx………………… 8.5
Compression set , (22 h/177℃/25%) %, approx…………………… 6.19
Rebound resilience, %, approx………………………………………… 65
Packaging: IOTA HCR 2930 U is delivered in 20 kg carton boxes.
Storage and shelf life: IOTA HCR 2930 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.
