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Vinyl POSS IOTA 66965, launched by IOTA, is a high-purity cage-type polyhedral oligomeric silsesquioxane product. Its molecular core consists of an inorganic Si8O12 cage framework, with eight reactive vinyl functional groups attached to the periphery, forming a typical organic-inorganic nano-hybrid structure. The product appears as a white powder with a purity of greater than or equal to 98%, featuring a well-defined molecular structure and a single molecular weight. It is an ideal nano-scale functional monomer for high-performance modification of polymeric materials.
Chinese Name: Vinyl POSS, Octavinylsilsesquioxane English Name: Octavinylsilsesquioxane, Octavinyl POSS CAS Number: 69655-76-1 Molecular Formula: C16H24O12Si8 Molecular Weight: 633.03
Appearance: White powder Purity: Greater than or equal to 98 percent
First, molecular-level uniformity: Unlike conventional polymers, POSS has a well-defined cage molecular structure and a single molecular weight, offering high batch-to-batch stability and precisely designable, reproducible modification results. Second, high reactivity: The eight vinyl groups provide abundant reactive sites, participating in various reaction systems including addition, free-radical, and peroxide cross-linking, with high cross-linking efficiency. Third, organic-inorganic hybrid structure: The inorganic siloxane cage core provides outstanding heat resistance, flame retardancy, and rigidity, while the peripheral organic groups ensure good compatibility with the resin matrix. Fourth, nano-scale effect: With molecular dimensions at the nanometer scale, uniform dispersion can significantly improve mechanical strength and thermal stability without sacrificing transparency or toughness. Fifth, high purity and low impurities: With a purity of greater than or equal to 98 percent and a white powder appearance, it meets the requirements of high-end applications sensitive to impurities, such as electronic-grade and optical-grade materials.
Silicone rubber and liquid silicone rubber modification: Used as a cross-linking and reinforcing agent in vinyl silicone rubber or addition-cure liquid silicone rubber systems to improve hardness, tear strength, heat resistance, and compression set resistance. Nano-additive for polymeric materials: Used in epoxy resin, polyurethane, acrylic resin, polyolefin, and engineering plastic systems to enhance modulus, heat resistance, and flame retardancy. Coupling agent and interfacial modification: Serves as an organic-inorganic interfacial coupling agent to improve the bonding between inorganic fillers and the resin matrix. High-end functional materials: Applied in specialty fields such as electronic encapsulation materials, insulation materials, optically transparent materials, heat-resistant coatings, and composite films.
This product is a white powder solid. It is recommended to store it in a dry, cool, and well-ventilated environment in sealed packaging, and under an inert atmosphere to prevent moisture absorption and oxidation. During use, select appropriate solvents for dissolution or dispersion according to the target system, and combine with suitable initiators or catalysts to ensure complete reaction. It is recommended to conduct small-scale trials first to determine the optimal dosage and process conditions.
The following are general physical and chemical parameters of this compound from public chemical databases, for reference only and not IOTA's product quality inspection specifications: Melting Point: Greater than 350 degrees Celsius Density: Approximately 1.22 g per cubic cm Flash Point: Greater than 200 degrees Celsius Storage Conditions: Inert atmosphere, room temperature
IOTA is committed to providing high-purity POSS series functional materials with well-defined structures. If you need to obtain samples, certificates of analysis, or application formulation guidance for Vinyl POSS IOTA 66965, please feel free to contact our technical support team.
