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Fast, room-temperature curing system specifically formulated for use with Dow SILASTIC RTV-3081-A base polymer.
Enables high-fidelity replication of fine surface details and complex geometries in silicone moulds.
Low exotherm during cure minimizes distortion risk in large or thick-section moulds.
Excellent compatibility and predictable pot life when mixed at the recommended 1:1 weight ratio with RTV-3081-A.
Produces platinum-cured silicone moulds with outstanding thermal stability and chemical resistance.
Prototyping and low-volume production of polyurethane, epoxy, and polyester resin castings.
Artistic and architectural reproduction, including decorative concrete, gypsum, and wax casting.
Manufacturing of flexible tooling for composite layup and vacuum infusion processes.
Medical device component prototyping requiring biocompatibility-compatible silicone moulds.
Special effects (SFX) and prop-making in film and entertainment industries.
| Chemical Type | Platinum-based addition-cure catalyst |
| Product Form | Low-viscosity liquid |
| Appearance | Clear, colorless to pale yellow liquid |
| Primary Applications | Curing agent for RTV-3081-A silicone elastomer in mould-making |
| Key Features | Room-temperature cure, no by-products, precise stoichiometric balance |
| Benefits | Consistent cure performance, minimal shrinkage, excellent demouldability |
| Storage Conditions | Store at 15–25°C in original sealed container; protect from moisture and contamination |
| Shelf Life | 12 months from date of manufacture when stored as specified |
Q1: What is the primary function of RTV-3081-R in silicone mould-making systems?
A: RTV-3081-R 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-3081-R compatible with all Dow SILASTIC® addition-cure base polymers?
A: RTV-3081-R is specifically formulated for use with Dow’s range of platinum-curable SILASTIC® LSR base polymers, including RTV-3081-A and similar vinyl-terminated silicone gums. Compatibility should be verified experimentally for non-Dow or modified base systems due to potential catalyst poisoning from inhibitors or contaminants.
Q3: How does temperature affect the cure profile when using RTV-3081-R?
A: Cure speed increases with elevated temperature, allowing flexible processing across ambient post-cure, mild heat (e.g., 60–100 °C), or accelerated tooling cycles. Lower temperatures extend working time and improve flow for intricate moulds, while higher temperatures reduce demould time — all without significant post-cure shrinkage or exotherm-related distortion.
Q4: Can RTV-3081-R be used for food-grade or medical-grade mould applications?
A: RTV-3081-R is intended for industrial mould-making and is not itself certified for direct food-contact or implantable medical device manufacturing. Final cured moulds may support such applications only after full validation of the complete silicone formulation, including extraction testing and regulatory compliance verification by the end-user.
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E-mail: wangxingqiang@ericwchem.com
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Building A1, Jiete Industrial Park, Huangpu District, Guangzhou City, Guangdong Province, China
