RJL-200 is two-component liquid silicone rubber for injection moulding processes. The liquid silicone rubber shows a high tear resistance and a high reactivity. Therefore, it can be cured under a lower temperature while maintaining a standard crosslinking rate.
Typical Physical Properties
Typical properties of the uncured rubber: | ||||||||
Property | method | Value | Value | Value | Value | Value | Value | |
Appearance | A-part | Transparent | Transparent | Transparent | Transparent | Transparent | Transparent | |
B-part | Transparent | Transparent | Transparent | Transparent | Transparent | Transparent | ||
Viscosity (20°C) | DIN 53018 | A-part | (120-180)×104 mPa•s | (130-190)×104 mPa•s | (130-190)×104 mPa•s | (70-90)×104 mPa•s | (110-190)×104 mPa•s | (200-300)×104 mPa•s |
B-part | (120-180)×104 mPa•s | (130-190)×104 mPa•s | (130-190)×104 mPa•s | (70-90)×104 mPa•s | (110-190)×104 mPa•s | (200-300)×104 mPa•s | ||
The pot-life of the mixture of the two components (closed vessel) at 20 ºC is five days. Increased temperatures reduce the pot-life. Typical properties of the Vulcanisate: Mixing ratio of components A : B = 1 : 1. Vulcanisation: 10 min. at 150 ºC | ||||||||
Shore A hardness | DIN 53 505 | 15±2 | 22±2 | 41±2 | 51±2 | 60±2 | 65±2 | |
Density | 1.08 g/cm3 | 1.08 g/cm3 | 1.09 g/cm3 | 1.09 g/cm3 | 1.13 g/cm3 | 1.13 g/cm3 | ||
Tensile strength | DIN 53 504 52 | ≧5.5 MPa | ≧8.5 MPa | ≧9.0 MPa | ≧9.0 MPa | ≧9.5 MPa | ≧8.5 MPa | |
Elongation at break | DIN 53 504 52 | ≧1000 % | ≧1050 % | ≧750 % | ≧750 % | ≧450 % | ≧400 % | |
Tear strength | ASTM D 624 die B | ≧9 N/mm | ≧20 N/mm | ≧30 N/mm | ≧30 N/mm | ≧30 N/mm | ≧35 N/mm | |
Resilience | DIN 53512 | ≧45% | ≧41% | ≧55% | ≧62% | ≧62% | ≧65% | |
Compression set | DIN 53 517(22 J A 175 ºC) | - | - | 24% | 22% | 22% | ≦22% | |
Typical properties are only for reference.