CONDENSATION CURE SILICONE also called Tin-based silicone rubber, which are two-part (Part A & Part B), room temperature curing system. It is used primarily in the mold-making industry with POURING or BRUSHING onto models to make the molds.
They are available in a variety of harnesses. Molds made from these rubbers offer high tear strength, good release properties, and resistance to high temperatures.
Inno Silica offers Pourable and Brush-able types for mold making.
Features
High tear strength and tensile strength.
Self-release when casting.
Excellent chemical and aging resistance.
Low shrinkage.
Long library life
Typical Uses & Casting Materials
Resin casting (polyurethane, polyester, epoxy)
Foam casting
Wax casting
Sculpture reproduction
Soap and candle making
Plaster casting
Cold cast bronze art
Low-melt metals
Concrete, Cement, GRC casting
Craft, toy casting
Pourable type (IS-CR Series)
Key Features: Very Flow; Easy Mixing; Less bubble; Penetrate fine details
※Thickener (TIN-THI) could also be offered to thicken these silicone rubber for brush-on molds.
Physical Properties @25’C |
IS-CR10 |
IS-CR15 |
IS-CR20 |
IS-CR25 |
IS-CR30 |
IS-CR35 |
IS-CR40 |
Hardness (shore A) |
10 |
15 |
20 |
25 |
30 |
35 |
40 |
Flexibility |
Very soft |
Soft |
Soft |
Medium |
Medium |
Medium |
Hard |
Mixing ratio (by weight) |
100:2~5 |
100:2~5 |
100:2~5 |
100:2~5 |
100:2~5 |
100:2~5 |
100:2~5 |
Color |
White |
White |
White |
White |
White |
White |
White |
Mixing Viscosity (cps) |
10,000 |
10,000- 13,000 |
15,000- 18,000 |
18,000- 20,000 |
20,000- 22,000 |
20,000- 23,000 |
15,000- 18,000 |
Working time (Mins) |
Fast type:10-15Mins Standard type:30-40Mins Slow type: 60-90Mins |
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Cure time (Hrs) |
Fast type:1-2hrs Standard type:5-8hrs Slow type:10-12hrs |
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Tear strength (N/mm) |
≥18 |
≥22 |
≥25 |
≥27 |
≥26 |
≥23 |
≥20 |
Tensile Strength (Mpa) |
≥4.5 |
≥4.2 |
≥4.2 |
≥4.0 |
≥4.2 |
≥3.7 |
≥3.5 |
Elongation (%) |
≥500% |
≥480% |
≥450% |
≥430% |
≥400% |
≥380% |
≥350% |
Shrinkage % |
≤0.2 |
≤0.2 |
≤0.2 |
≤0.2 |
≤0.2 |
≤0.2 |
≤0.2 |
Need more information, please contact:
Steve