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Soft, skin-friendly durometer (Shore A 10–20) for enhanced tactile comfort and conformability.
Excellent thermal stability across –50 °C to 200 °C, maintaining integrity under repeated thermal cycling.
Low compression set (<20% after 72 h at 150 °C), ensuring long-term sealing and rebound performance.
Good adhesion to common substrates including plastics, metals, and glass without primers.
Biocompatibility aligned with ISO 10993-5 (cytotoxicity) and USP Class VI testing protocols.
Medical wearable devices requiring soft, flexible, and skin-contact-compatible elastomers.
Sealing and gasketing solutions for automotive sensors and EV battery module enclosures.
Consumer electronics housings and protective overmolds for buttons, grips, and interfaces.
Food-grade appliance components including dishwasher seals and blender gaskets.
Industrial soft-touch control panels and human-machine interface (HMI) overlays.
| Chemical Type | Platinum-cured silicone elastomer blend |
| Product Form | Two-part liquid (Part A + Part B), ready-to-mix |
| Appearance | Translucent to slightly hazy viscous liquid |
| Primary Applications | Soft-touch overmolding, medical wearables, sealing, gasketing |
| Key Features | Ultra-low durometer, high elongation (>600%), low compression set |
| Benefits | Improved patient comfort, design flexibility, reduced assembly steps |
| Curing System | Pt-catalyzed addition cure (heat or room temperature) |
| Regulatory Compliance | Meets FDA 21 CFR §177.2600, ISO 10993-5, USP Class VI |
Q1: What is the primary function of DOWSIL 9546 in silicone elastomer formulations?
A: DOWSIL 9546 is designed as a high-performance processing aid and rheology modifier for addition-cure liquid silicone rubber (LSR) systems. It helps improve mold release, reduce viscosity during processing, and enhance surface smoothness and demoldability without compromising final cure properties.
Q2: Is DOWSIL 9546 compatible with platinum-catalyzed LSR systems?
A: Yes, DOWSIL 9546 is formulated for compatibility with standard platinum-catalyzed addition-cure LSR systems. It does not contain inhibitors or contaminants known to interfere with platinum catalysis when used at recommended dosage levels.
Q3: How should DOWSIL 9546 be incorporated into an LSR formulation?
A: It is typically added to the base polymer component prior to mixing with the catalyst. For optimal dispersion, incorporate under low-shear conditions at room temperature or slightly elevated temperatures—avoid prolonged high-shear mixing that may degrade the blend’s performance characteristics.
Q4: Does DOWSIL 9546 affect the thermal stability or compression set of cured elastomers?
A: When used within typical dosage ranges, DOWSIL 9546 does not significantly impair the inherent thermal stability or long-term compression set resistance of well-formulated LSR compounds. Its silicone-based composition ensures compatibility with the cured network structure.
Contact With Us:
E-mail: wangxingqiang@ericwchem.com
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Building A1, Jiete Industrial Park, Huangpu District, Guangzhou City, Guangdong Province, China
