HCR 1670 U is a silicone master-batch, heat curing after the addition of a vulcanizing agent (chosen according to the processing method).
Details
HEAT CURED SILICONE RUBBER HCR 1670 U
Description: HCR 1670 U is a silicone master-batch, heat curing after the addition of a vulcanizing agent (chosen according to the processing method).
Applications: HCR 1670 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
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…………………………………………………………… 1.23
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 Properties before post-cure
Shore A hardness, approx………………………………………………… 71
Tensile strength, MPa, approx………………………………………… 7.9
Elongation at break, %, approx…………………………………… …. 346
Modulus at 100% elongation, MPa, approx………………………. 2.91
Tear strength, (ASTM D 624 Die B)kN/m, approx…………………. 16
Rebound resilience, %, approx……………………………………………… 44
2. Properties after post-cure for 4 hours at 200°C
Shore A hardness, approx…………………………………………………… 73
Tensile strength, MPa, approx…………………………………………….. 7.6
Elongation at break, %, approx…………………………………………… 288
Modulus at 100% elongation, MPa, approx………………………… 3.06
Tear strength (ASTM D 624 Die B),kN/m, approx……………… 13
Rebound resilience, %, approx…………………………………………… 42
Notes: The technical data listed in the table as a typical performance, can not be used as a technical parameter for HCR 1670 U special applications.
Packaging: HCR 1670 U is delivered in 20 kg carton boxes.
Storage and shelf life: HCR 1670 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, no longer guarantees that the product meets the sales specifications.
Anhui ZINCA Silicone Technologies Co., Ltd.
phone:+86-15395202093
Email:wfffff666666@163.com
Whatsapp: +8615395202093
Wechat:Wufan-7777777