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IOTA 279 is a reactive modifier featuring a bis-glycidyl phenyl trisiloxane structure, specifically designed to enhance the overall performance of polymers such as epoxy resins, polyurethanes, and polycarbonates. It is not merely an additive but an active component that participates in curing and polymerization reactions, reconstructing material properties at the molecular level to significantly improve toughness, weather resistance, and functional adaptability.
Significantly improves the flexibility and impact resistance of materials like epoxy resins, reducing the risk of brittle fracture.
Provides excellent resistance to high and low temperature cycling, making it suitable for applications in extreme environments.
Enhances dielectric properties and electrical reliability, ideal for electronic encapsulation and insulation applications.
Exhibits outstanding resistance to atomic oxygen erosion in aerospace and specialized environments.
Optimizes internal stress distribution in materials, enhancing process adaptability and product reliability.
Introduces silicone segments to significantly improve hydrophobicity and outdoor durability of materials.
| Parameter | Specification |
|---|---|
| Appearance | Colorless to light yellow transparent liquid |
| Epoxy Equivalent Weight | 260–340 g/equ |
| Refractive Index (25°C) | 1.474 |
| Viscosity | 15–30 cst |
| Main Component | Bis-glycidyl phenyl trisiloxane |
| Solvent Content | Solvent-free |
Epoxy Resin Systems: Electronic encapsulants, structural adhesives, composite materials, coatings
Polyurethane Materials: Elastomers, adhesives, coatings, sealants
Polycarbonate Modification: Copolymer modification, processing aids, high-performance engineering plastics
Specialty Materials: Aerospace materials, atomic oxygen-resistant coatings, high-insulation components
Add directly to the prepolymer to participate in the curing reaction. Recommended dosage: 5–15% by weight of the resin system.
Can be used in synergy with amine chain extenders or react with isocyanate groups via acid ring-opening mechanisms to achieve intramolecular toughening.
Can be directly incorporated during polymerization as a comonomer or added as a reactive additive during processing and molding.
Packaging Specifications: 25 kg/drum, 200 kg/drum (internally coated iron drums)
Storage Requirements: Store sealed, avoid contact with moisture, oxidizers, and catalytic impurities
Shelf Life: 6 months under unopened conditions
Safety Notice: This product is non-hazardous but reactive. It is recommended to operate under professional guidance.