Vinyltrimethoxysilane (VTMO), identified by CAS number 2768-02-7, is a vital organosilane that plays a significant role across numerous industrial sectors. As a leading chemical manufacturer and supplier, we specialize in providing high-purity VTMO, enabling advancements in material science and manufacturing processes. This article provides a detailed look at the properties of VTMO and its diverse applications, highlighting why it is a sought-after chemical intermediate.

Vinyltrimethoxysilane is characterized by its chemical formula C5H12O3Si and its designation as a bifunctional organosilane. Its molecular structure features two key reactive components: an organophilic vinyl group (CH2=CH-) and three hydrolyzable methoxy groups (-OCH3) attached to a silicon atom. This dual functionality is the source of its versatility and effectiveness in various applications.

Key Properties of Vinyltrimethoxysilane:

  • Appearance: Typically a colorless, transparent liquid.
  • Purity: High purity, often exceeding 99.0%, is crucial for its performance as a coupling agent and crosslinker.
  • Reactivity: The methoxy groups are susceptible to hydrolysis in the presence of moisture, forming reactive silanol groups (Si-OH). These silanol groups can undergo condensation reactions to form siloxane bonds (Si-O-Si) or bond with hydroxyl-containing surfaces.
  • Vinyl Group Reactivity: The vinyl group can participate in free-radical polymerization or addition reactions with polymers containing appropriate functional groups, or activated by peroxides.
  • Thermal Stability: VTMO exhibits good thermal stability under typical processing conditions.
  • Solubility: It is generally soluble in most organic solvents and has slight solubility in water.

Primary Industrial Applications:

The unique properties of Vinyltrimethoxysilane make it an indispensable component in several key industries:

  • Polymer Modification: VTMO is used as a co-monomer or additive to modify polymers such as polyethylene, polypropylene, and acrylics. It enhances adhesion to inorganic surfaces and enables moisture-triggered crosslinking, leading to improved mechanical strength, thermal stability, and chemical resistance. This is particularly relevant in the production of silane-crosslinked polyethylene (XLPE) for cables.
  • Adhesion Promoter: It acts as a powerful adhesion promoter in coatings, adhesives, and sealants. By creating covalent bonds between organic resins and inorganic substrates (like glass, metal, and fillers), VTMO significantly improves bond strength, durability, and resistance to environmental degradation.
  • Rubber Auxiliary: In the rubber industry, VTMO improves the compatibility of fillers with elastomers, such as silicone rubber. This leads to better filler dispersion, reduced melt viscosity, and enhanced mechanical properties of the final rubber products.
  • Surface Treatment: VTMO can be used to pre-treat inorganic surfaces like glass fibers, minerals, and ceramics. This treatment improves the adhesion of coatings and composites applied to these surfaces, enhancing overall performance and longevity.
  • Moisture Scavenger: In certain formulations, VTMO can act as a moisture scavenger, reacting with and removing trace amounts of water that could otherwise negatively impact curing or product stability.

For businesses seeking to purchase Vinyltrimethoxysilane, partnering with a reliable manufacturer and supplier is essential. We are committed to providing high-quality VTMO at competitive prices, ensuring the performance and reliability of your products. Our extensive experience and dedication to quality make us an ideal partner for your chemical sourcing needs. We encourage you to contact us for inquiries, samples, and bulk orders to discover how our Vinyltrimethoxysilane can benefit your industrial processes.