Product name: Vinyltrimethoxysilane / A-171 CAS 2768-02-7
Brand: Entrepreneur
Cas No.: 2768-02-7
Purity: 96% min
Grade: A-171 / KBM-1003 / Y-4302 / SZ-6300
Country of Origin: China
Delivery Time: Within 3-10 working days according to the quantity
Appearance: Colorless liquid
Flash point: 31℃
Boiling point: 123℃ at 760mmHg
Other names: Silane, ethenyltrimethoxy- / Silane, trimethoxyvinyl- / Ethenyltrimethoxysilane

Description:

Vinyltrimethoxysilane, also known as A-171, KBM-1003 or Y-4302, is an organosilicon compound with the chemical formula CH?=CHSi(OCH?)?. It is a clear, colorless liquid that belongs to the class of organosilanes, which are silicon compounds containing organic functional groups. Vinyltrimethoxysilane is widely used in various industrial applications, particularly in the fields of materials science, coatings, adhesives, and surface treatments.

One of the key properties of vinyltrimethoxysilane is its ability to undergo hydrolysis in the presence of water. This hydrolysis reaction results in the formation of silanol groups (-SiOH) on the surface of the material being treated. These silanol groups can further condense with other silanol groups or react with other functional groups, allowing for the cross-linking and polymerization of the compound.

The vinyl functional group (CH?=CH-) in vinyltrimethoxysilane provides it with unique characteristics. It enables the compound to participate in a range of chemical reactions, such as copolymerization and grafting onto polymer surfaces. This reactivity makes it a valuable precursor for the synthesis of various polymers, coatings, and adhesives, allowing for enhanced material properties, such as improved adhesion, durability, and chemical resistance.

Vinyltrimethoxysilane finds applications in industries such as automotive, electronics, construction, and textiles. It is commonly used as a coupling agent, which promotes adhesion between organic polymers and inorganic surfaces, such as glass, metal, or mineral fillers. By forming a strong bond between the organic and inorganic phases, it enhances the mechanical properties and stability of composite materials.

Moreover, vinyltrimethoxysilane is employed as a surface treatment agent, promoting the hydrophobicity and oleophobicity of various substrates. This can lead to water repellency, stain resistance, and anti-fouling properties in coatings and textiles.

However, it is important to note that vinyltrimethoxysilane is a reactive compound and requires careful handling. It is sensitive to moisture and should be stored in a dry environment to prevent premature hydrolysis. Adequate safety precautions and good ventilation should be maintained when working with this chemical.

Overall, vinyltrimethoxysilane is a versatile and valuable organosilane compound, widely utilized in industrial applications to improve material properties, enhance adhesion, and provide surface modifications. Its unique reactivity and functionality make it an essential component in the development of advanced materials and technologies.

Features:

1. Hydrolysis: Vinyltrimethoxysilane is susceptible to hydrolysis, meaning it reacts with water molecules. This property enables it to form silanol (-SiOH) groups on surfaces, facilitating adhesion and surface modification.
2. Reactivity: The vinyl functional group (CH?=CH-) in vinyltrimethoxysilane allows it to engage in various chemical reactions. It can undergo copolymerization, grafting, and cross-linking reactions, leading to the synthesis of polymers with enhanced properties.
3. Adhesion Promotion: Vinyltrimethoxysilane acts as a coupling agent, promoting adhesion between organic polymers and inorganic surfaces, such as glass, metals, or mineral fillers. It forms strong bonds at the interface, enhancing the mechanical strength and durability of composite materials.
4. Surface Modification: By treating surfaces with vinyltrimethoxysilane, hydrophobic (water-repellent) and oleophobic (oil-repellent) properties can be imparted. This makes it useful for creating water-resistant coatings, stain-resistant surfaces, and anti-fouling treatments.
5. Material Compatibility: Vinyltrimethoxysilane exhibits compatibility with various materials, including polymers, metals, ceramics, and glass. This broad compatibility allows for its widespread application across different industries.
6. Thermal Stability: Vinyltrimethoxysilane demonstrates good thermal stability, making it suitable for use in applications that involve high temperatures.
7. Volatility: Vinyltrimethoxysilane has moderate volatility, meaning it can evaporate or sublime at a relatively low rate. This characteristic can be advantageous for certain applications, such as thin-film deposition processes.
8. Chemical Resistance: The presence of the trimethoxysilyl groups in vinyltrimethoxysilane contributes to its chemical resistance. It can withstand exposure to acids, bases, and various solvents, enhancing the durability and longevity of treated materials.

Applications:

1. Adhesion Promoter
Vinyltrimethoxysilane is widely used as an adhesion promoter or coupling agent. It improves the adhesion between organic polymers and inorganic surfaces, such as glass, metals, and minerals. It is employed in the production of composites, coatings, and adhesives to enhance the bonding strength and durability of materials.
2. Surface Treatment
The hydrolysis of vinyltrimethoxysilane generates silanol groups on surfaces, allowing for surface modifications and functionalization. It is used as a surface treatment agent to enhance the hydrophobicity, oleophobicity, and chemical resistance of substrates. This property is utilized in coatings, textiles, and various surface protection applications.
3. Polymer Modification
Vinyltrimethoxysilane acts as a reactive monomer in polymerization processes. It can be copolymerized with other monomers to introduce vinyl groups into the polymer backbone, resulting in enhanced properties such as improved adhesion, flexibility, and chemical resistance. It is used in the production of resins, elastomers, and polymer composites.
4. Silane Cross-Linking Agent
Vinyltrimethoxysilane is employed as a cross-linking agent for silane-based systems. It reacts with other silanes or silanol groups, facilitating the cross-linking and polymerization of polymers, coatings, and sealants. This cross-linking process enhances the mechanical strength, heat resistance, and chemical stability of the final products.
5. Water-Repellent Coatings
Due to its hydrophobic properties, vinyltrimethoxysilane is utilized in the formulation of water-repellent coatings. It can be applied to various surfaces, including glass, ceramics, and textiles, to create protective coatings that repel water, prevent staining, and provide easy-to-clean properties.
6. Concrete and Construction Industry
Vinyltrimethoxysilane is employed as an additive in concrete formulations. It enhances the bonding between cement and aggregates, improving the strength, durability, and water resistance of concrete structures. It is also used in the construction industry as a surface treatment agent for protecting and waterproofing building materials.
7. Electronics and Electrical Industry
Vinyltrimethoxysilane is utilized in electronics and electrical applications as a coating material, especially for electronic components and circuit boards. It provides moisture resistance, insulation, and adhesion properties, improving the reliability and performance of electronic devices.
8. Textile Industry
Vinyltrimethoxysilane is used in the textile industry to impart water repellency and stain resistance to fabrics. It enhances the durability and functionality of textiles, making them suitable for outdoor and technical applications.

Specification:

Cas No.	2768-02-7
Molecular Formula	C5H12O3Si
Molecular Weight	148.23
Appearance	Colorless liquid
Flash point, Tag closed cup	31℃
Boiling point at 760mmHg	123℃
Refractive index	1.393
Density	0.97g/mL
Purity	96% Min

Storage: Store in a tightly sealed container and put it in a cool, dry, ventilated place.

Package: 200kg/drum or as your special request.