HEAT CURED SILICONE RUBBER IOTA HCR 1660 U
Description: IOTA HCR 1660 U is a silicone master-batch, heat curing after the addition of a vulcanizing agent (chosen according to the processing method).
Applications: IOTA HCR 980 U is recommended for moulding, has good compromise of mechanical properties.
Special properties
Easy to process, non-stick to rollers,un- easy to release
Good mechanical properties
Good heat stability, up to 200°C
Major potential for blending with other master batches
Characteristics
Type (in accordance with GB/T 5576-1997) ………………………………………… VMQ
Density at 25°C, g/cm3, approx…………………………………………………………… 1.19
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.Properties after a vulcanization
Shore A hardness, approx…………………………………60
Tensile strength, MPa, approx………………………… 8.4
Elongation at break, %, approx…………………… …. 466
Modulus at 100% elongation, MPa, approx……….1.90
Tear strength, kN/m, approx……………………………. 16
Rebound resilience, %, approx………………………… 47
2. Properties after post-cure for 4 hours at 200°C
Shore A hardness, approx…………………………………………… 60
Tensile strength, MPa, approx…………………………………….. 7.6
Elongation at break, %, approx………………………………… 380
Modulus at 100% elongation, MPa, approx……………… 1.98
Tear strength (ASTM D 624 Die B)，kN/m, approx…… 14
Rebound resilience, %, approx…………………………………… 43
Notes: The technical data listed in the table as a typical performance, can not be used as a technical parameter for IOTA HCR 1660 U special applications.
Packaging: IOTA HCR 1660 U is delivered in 20 kg carton boxes.
Storage and shelf life: IOTAHCR 1660 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.
