Evonik Dynasylan SILFIN80 is a sophisticated silane crosslinking system specifically engineered for one-step polyethylene and ethylene copolymer cable production. This integrated formulation combines vinyl silane, grafting initiator, and moisture-curing catalyst in optimal proportions, delivering exceptional processing stability and enhanced crosslinking efficiency for superior cable performance.
Integrated Formulation - Pre-mixed system ensures precise component balance
Enhanced Thermal Stability - Superior resistance to premature crosslinking
Optimized Processing - Improved grafting efficiency and production throughput
Moisture-Activated Curing - Accelerated crosslinking under various conditions
Transport Safety - Excellent stability during storage and transportation
Power Cable Manufacturing - Medium and low voltage cable insulation
Wire & Cable Production - Crosslinked polyethylene insulation materials
Polymer Modification - Enhanced thermal stability for engineering polymers
Electrical Components - High-performance insulation systems
Industrial Materials - Crosslinked polymer products for various applications
| Product Type | Silane crosslinking system |
| Appearance | Light yellow clear liquid |
| Main Components | Vinylsilane, Initiator, Catalyst |
| Active Content | > 98% |
| Decomposition Temperature | 75°C (SADT) |
| Density (25°C) | 0.92-0.96 g/cm³ |
| Viscosity (25°C) | 10-30 mPa·s |
| Flash Point | > 60°C |
| Storage Stability | 12 months at room temperature |
Q1: What is the primary functional mechanism of Dynasylan SILFIN80 in composite systems?
A: Dynasylan SILFIN80 acts as a bifunctional coupling agent, with its organofunctional group reacting with organic polymer matrices (e.g., polyolefins, polyesters, or thermosets), while its hydrolyzable alkoxy groups condense with hydroxyl-rich inorganic surfaces (e.g., glass fibers, silica, or mineral fillers) to form stable siloxane bonds.
Q2: How is Dynasylan SILFIN80 typically incorporated into formulations?
A: It is commonly added directly to the resin phase or pre-mixed with fillers/fibers via dry-blending or slurry treatment. Due to its reactivity, it is recommended to avoid prolonged exposure to moisture prior to processing and to use it shortly after opening the container.
Q3: Is Dynasylan SILFIN80 compatible with common thermoplastic and thermoset resins?
A: Yes — it demonstrates broad compatibility with polypropylene (PP), polyethylene (PE), unsaturated polyesters (UP), epoxy resins, and phenolic systems. Performance optimization may require adjustment of process conditions (e.g., temperature, residence time) depending on the matrix chemistry.
Q4: What are key handling and storage recommendations for this silane?
A: Store in tightly sealed original containers under dry, cool conditions (below 30 °C) and protect from humidity and direct sunlight. Once opened, minimize air exposure and consider inert gas blanketing for extended shelf life. Always follow Evonik’s Safety Data Sheet for occupational hygiene and PPE guidance.
Q5: Can Dynasylan SILFIN80 improve mechanical properties in filled polymer compounds?
A: Yes — when properly applied, it enhances interfacial adhesion between fillers and the polymer matrix, often leading to improved tensile strength, flexural modulus, impact resistance, and long-term durability — especially under humid or thermal aging conditions.
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