HEAT CURED SILICONE RUBBER IOTA HCR 1640 U
Description: IOTA HCR 1640 U is a silicone master-batch, heat curing after the addition of a vulcanizing agent (chosen according to the processing method).
Applications: IOTA HCR 1640 U is recommended for moulding, has good compromise of mechanical properties.
Special properties:
Easy to process, non-stick to rollers, easy to release;
Good mechanical properties;
Good heat stability, up to 200°C;
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…………………………………………………………… 1.13
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℃.
Typical property:
1.After a vulcanization
Shore A hardness, approx…………………………………41
Tensile strength, MPa, approx………………………… 8.8
Elongation at break, %, approx…………………… …. 650
Modulus at 100% elongation, MPa, approx……….0.83
Tear strength, kN/m, approx……………………………. 14
Rebound resilience, %, approx………………………… 57
2. Properties after post-cure for 4 hours at 200°C
Shore A hardness, approx………………………………… 36
Tensile strength, MPa, approx………………………….. 6.6
Elongation at break, %, approx………………………… 547
Modulus at 100% elongation, MPa, approx…………0.72
Tear strength, kN/m, approx……………………………… 14
Rebound resilience, %, approx…………………………… 46
Notes: The technical data listed in the table as a typical performance, can not be used as a technical parameter for IOTA HCR 1640 U special applications.
Packaging: IOTA HCR 1640 U is delivered in 20 kg carton boxes.
Storage and shelf life: IOTAHCR 1640 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.
