Long chain alkyl silicone oil and methyl silicone oil have significant differences in chemical structure and application areas, the following are the main differences between them:
Chemical structure
Long chain alkyl silicone oil: Long chain alkyl silicone oil is a new material that replaces part of the methyl group of the traditional polydimethylsiloxane with an alkane group and grafts the structure. The R in its molecular structure is an alkane group with a carbon atom number greater than 12, which gives it unique properties.
Methylsilicone oil: Methylsilicone oil, also known as polydimethylsiloxane (PDMS), is a colorless, odorless, non-volatile liquid, mainly from the hydrolysis of dimethyldichlorosilane. Its molecular structure is mainly composed of silico-oxygen bonds (Si-O-Si) with methyl (CH3) side groups.
Performance characteristics
Long chain alkyl silicone oil: In addition to the general properties of silicone oil (such as high and low temperature resistance, wetness, flexibility, etc.), it also has better smoothness, wear resistance, better compatibility with other oils, and good moisturizing and preventing cracking functions. In addition, it can also be printed, painted and bonded directly on the surface of the product after stripping, without cleaning.
Methyl silicone oil: has excellent heat resistance, electrical insulation, weather resistance, hydrophobicity, physiological inertia and small surface tension. At the same time, it also has low viscosity temperature coefficient and high resistance to compressibility.
Application field
Long chain alkyl silicone oil: widely used in cosmetics (such as shampoo, cream lubricants), release agents (especially suitable for the release of polyurethane products), lubricating oil, grease, paint, coating defoamer, wetting dispersant and other fields. In addition, it can also be used as an internal release agent and dispersant for organic materials.
Methyl silicone oil: mainly used for insulation, lubrication, shock-proof, dust-proof oil, dielectric fluid and heat carrier. At the same time, it is also a common additive for defoaming, film removal, paint and daily cosmetics. In the textile industry, methyl silicone oil can be used for soft finishing of fabrics to increase the lubricity and smoothness of fabrics.
In summary, there are significant differences between long chain alkyl silicone oil and methyl silicone oil in chemical structure, performance characteristics and application fields. These differences make them have unique advantages and application value in different fields.
