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Fast, room-temperature curing for rapid mold turnaround and improved production efficiency.
Excellent adhesion to a wide range of substrates including plaster, wood, concrete, and cured silicone molds.
Low viscosity and high flowability for precise replication of fine surface details and complex geometries.
Non-corrosive formulation compatible with platinum-cure silicone systems without inhibition.
Stable shelf life when stored under recommended conditions (unopened, cool, dry environment).
Artistic casting and sculpture reproduction in foundries and fine art studios.
Prototyping and low-volume production tooling for automotive and aerospace components.
Architectural precast concrete mold making for façade elements and decorative panels.
Jewelry investment casting using lost-wax patterns requiring high-fidelity replication.
Industrial pattern duplication for composite part manufacturing and resin transfer molding (RTM) tools.
| Chemical Type | Platinum-based catalyst system |
| Product Form | Liquid concentrate |
| Appearance | Clear, colorless to pale yellow liquid |
| Primary Applications | Curing agent for addition-cure silicone elastomers in mold-making |
| Key Features | Room-temperature cure, non-inhibiting, low odor |
| Benefits | Enables fast demolding, excellent dimensional stability, and minimal shrinkage |
| Storage Conditions | Store at 5–25°C; protect from moisture and direct sunlight |
| Packaging | 1 kg and 5 kg sealed HDPE containers |
Q1: What is the primary function of RTV-3087-S in silicone mould-making systems?
A: RTV-3087-S is a platinum-based curing agent designed to initiate and accelerate the hydrosilylation reaction in addition-cure liquid silicone rubber (LSR) formulations, enabling rapid, low-heat vulcanization for high-fidelity mould reproduction.
Q2: Is RTV-3087-S compatible with all Dow XIAMETER® RTV-2 silicone bases?
A: RTV-3087-S is specifically formulated for use with Dow’s addition-cure RTV-2 silicone elastomer bases, including but not limited to RTV-3087-A and similar platinum-curable systems. Compatibility should always be verified through small-scale formulation trials prior to full-scale production.
Q3: How does RTV-3087-S affect cure speed and final physical properties of the cured mould?
A: Increasing the dosage of RTV-3087-S generally reduces pot life and accelerates cure onset, while maintaining excellent dimensional stability and surface detail replication. Final tensile strength, elongation, and tear resistance are primarily governed by the base polymer system, though optimal catalyst loading ensures full crosslink density without residual inhibition or incomplete cure.
Q4: What handling precautions should be observed when working with RTV-3087-S?
A: As a platinum complex, RTV-3087-S is sensitive to contamination from sulfur-, nitrogen-, phosphorus-, and heavy metal-containing substances (e.g., certain release agents, latex gloves, or pigments), which may inhibit cure. Use clean, dedicated equipment and nitrile or polyethylene gloves; avoid exposure to ambient dust or uncured condensation-cure silicones.
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