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(1) Drawbacks of Polishing Quality Issues1) The edge of the cavity’s inner hole may have collapsed corners, mixed angles, or bruises, and after polishing, the opening of the inner hole may enlarge (c...
Liquid Silicone Rubber (LSR) is a kind of non-toxic, heat-resistant hot solid material. It is liquid, good fluidity, fast vulcanization, low viscosity. Having these material properties, the ability to combine with various metals and plastics makes LSR widely used. Compared with traditional materials, LSR molding has the advantages of short molding cycle, high automatic molding degree, low vulcanization temperature, no by-products in the vulcanization process, high product accuracy and long service life.
| LSR | ELASTOSIL® LR 3070/50 A/B | ELASTOSIL® LR 3003 / 10 A, B | DSA-7165A | SQUARE® LIM3966-70A/B | Unit | Testing Standard |
| Data sheet | Click to Download | Click to Download | Click to Download | Click to Download | ||
| Manufacturer | WACKER | WACKER | Doneson | SQUARE | ||
| Description | Self-adhesive liquid silicone rubbers of the ELASTOSIL® LR 3070 series are paste-like, easilypigmentable two-component compounds with extremely short curing times. | Liquid silicone rubbers of the ELASTOSIL LR 3003 series are paste-like, easily-pigmentable two-component compounds with very short curing times. Their vulcanizates are noted for their high transparency and excellent mechanical and electrical properties. When heat stabilizers are added, the products can be used within a temperature range of – 55 &C to + 230 &C, and for a short time up to 300 &C. | High transmittance, UV light resistance, High temperature resistance even above 150 °C, Strong color stability,<1% haze | 70 shore A hardness,2-part, 1 to 1 mix, transparent, injection molding grade liquid silicone rubber. | ||
| Appearance | Transparent | Transparent | Water clear | A: Transparent B:Black | ||
| UL Yellow Card | / | / | / | |||
| Physical | Dry | Dry | Dry | Dry | Unit | Test Method |
| Density | 1.1 | 1.08 | 1.08 | 1.13 | g/cm³ | ISO 1183-1 A |
| Viscosity (shear rate 0.9 s) | 940000 | 140000 | 65000 | 750（Pa s） | mPa s | DIN 53019 |
| Hardness | Dry | Dry | Dry | Dry | Unit | Test Method |
| Shore Hardness Shore A | 52 | 12 | 70 | 70 | / | DIN 53505 |
| Mechanical | Dry | Dry | Dry | Dry | Unit | Test Method |
| Tensile strength | 8 | 3 | 7.2（Mpa） | 8.5（Mpa） | N/mm² | DIN 53504 S 1 |
| Tear strength | 20 | 9 | 18 (KN/m) | 32 (KN/m) | N/mm | ASTM D 624 B |
| Elongation at break | 450 | 620 | 240 | 440 | % | DIN 53504 S 1 |
| Thermal | Dry | Dry | Dry | Dry | Unit | Test Method |
| Melting Temperature | / | / | / | / | °C | ISO 11357-3 |
| Flammability | Dry | Dry | Dry | Dry | Unit | Test Method |
| Flame Rating | / | / | / | / | / | UL94 |
