Description: This series is a premixed compound of silicone rubber with platinumcuring series with good balanced properties, vulcanizing under heat afteraddition of a vulcanizing agent that could be chosen according to processingrequirement.
Special properties:
Ø Platinum curing adapted to process of molding, extrusion and calendaring.
Ø Excellent operation time (after adding platinum curing agent)
Ø Good balanced properties.
Ø Good appearance.
Ø Easy to process and demold, not sticky to rolls.
Ø Good stability up to 200℃.
Ø Slight replastification after prolonged storage.
Ø Wild range of reloading or blending.
Ø Bright colors easily obtained
Main applications:
ØMolding articlerequired Platinum cured,molded general miscellaneous articles,kitchenware,extrusions such as cable, seals, sheet, tube, etc,Siliconecalendering cloth& sheet & plate etc.
Characteristics:
Type (according to GB/T 5576-1997)................................VMQ
Naturalcolor...................................................................... translucent
Curing Condition:
After addition of 1.1% of 2,5-dimethyl-2-5-di(tert-butylperoxy)hexane (at 45%) and vulcanization for 5min at 175°C.
Mechanical properties
Item | Testing Method | Unit | Technical Data |
SR340U | SR350U | SR360U | SR370U | SR380U |
Appearance | Visual Observation |
| Translucent | Translucent | Translucent | Translucent | Translucent |
Density | ASTM D792 | g/cm3 | 1.13 | 1.16 | 1.19 | 1.12 | 1.23 |
Hardness | ASTM D2240 | Shore A | 39 | 50 | 59 | 71 | 80 |
Tensile Strength | ASTM D412 | Mpa | 6.9 | 7.2 | 6.8 | 8.2 | 7.1 |
Elongation | ASTM D412 | % | 562 | 430 | 348 | 248 | 202 |
100% Modulus | ASTM D412 | Mpa | 0.81 | 1.33 | 2.12 | 3.61 | 2.65 |
Tear Strength | ASTM D624 Die B | N/mm | 13 | 14 | 16 | 18 | 17 |
Rebound | ASTM D395 Method B | % | 70.1 | 64.9 | 57.5 | 56.5 | 55.2 |
