I-Butyltriethoxysilane: An Overview of Properties and Applications
I-Butyltriethoxysilane, also known as Isobutyltriethoxysilane, is a versatile organosilicon compound that finds applications in a wide range of industries, including adhesives, coatings, plastics, and electronics. As a silane coupling agent, it can bond organic materials with inorganic surfaces, improving adhesion, durability, and performance.
Manufactured and supplied by INNO Specialty Chemicals from China, I-Butyltriethoxysilane is available under various trade names, including Evonik Degussa Dynasylan IBTEO, DOWSIL Z-6403, Degussa Dynasylan IBTEO, Catylen D1200, and others. It has the chemical formula C9H22O3Si and a molecular weight of 206.36 g/mol.
Physical and Chemical Properties
I-Butyltriethoxysilane is a clear, colorless to yellowish liquid with a pungent odor. It has a boiling point of 194-196°C, a flash point of 74°C, and a density of 0.867 g/mL at 25°C. It is soluble in many organic solvents, such as ethanol, acetone, and toluene, but insoluble in water.
The functional group of I-Butyltriethoxysilane is a triethoxysilyl (-Si(OC2H5)3) group, which can react with hydroxyl (-OH) groups on surfaces, forming covalent bonds and creating a strong interfacial adhesion. The isobutyl (-CH(CH3)2) group provides steric hindrance, preventing the silane from hydrolyzing too quickly and promoting a more stable and uniform bond.
Applications
I-Butyltriethoxysilane is used in many applications where improved adhesion, wetting, and dispersion are required. Some of the most common applications are:
1. Adhesives and Sealants: I-Butyltriethoxysilane is added to adhesive and sealant formulations to enhance the bonding strength and durability on various substrates, such as metals, glass, ceramics, and plastics. It can also improve the moisture and chemical resistance of the adhesives.
2. Coatings and Paints: I-Butyltriethoxysilane can be used as a crosslinking agent or a surface modifier in coatings and paints, providing better adhesion and corrosion protection. It can also improve the scratch resistance, gloss, and weatherability of the coatings.
3. Plastics and Composites: I-Butyltriethoxysilane can be used as a compatibilizer or a coupling agent in polymer blends and composites, promoting the dispersion and adhesion of different phases. It can also improve the mechanical properties, such as stiffness, toughness, and impact resistance, of the materials.
4. Electronics and Optics: I-Butyltriethoxysilane can be used as a surface modifier or a dielectric material in electronic devices and optical fibers, improving the adhesion, insulation, and refractive index. It can also reduce the moisture and gas permeability of the materials.
5. Others: I-Butyltriethoxysilane can be used in many other applications, such as textile finishing, leather treatment, paper sizing, and oil recovery. Its versatile properties and compatibility with many substrates make it a valuable additive in various industries.
Safety and Handling
I-Butyltriethoxysilane is a flammable liquid and a skin and eye irritant. It should be handled with care and stored in a cool, dry, and well-ventilated area. Proper protective equipment, such as gloves, goggles, and respirators, should be worn when handling the material. Spills or leaks should be contained and cleaned up immediately with absorbent materials. The material should be kept away from heat, sparks, and open flames.
Conclusion
I-Butyltriethoxysilane is a versatile and useful organosilicon compound that can improve the adhesion, wetting, and dispersion of many materials. Its unique properties, such as the triethoxysilyl and isobutyl groups, make it an effective coupling agent and surface modifier. It has a wide range of applications in various industries, such as adhesives, coatings, plastics, and electronics. INNO Specialty Chemicals is a reliable manufacturer and supplier of I-Butyltriethoxysilane from China, providing high-quality and cost-effective solutions for customers worldwide.
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