Applications of Silicone Oil in Mold Release Agents, Anti-stick Agents, Smoothing Agents, and Refrigerants
I. Silicone Oil as a Mold Release Agent, Anti-stick Agent, and Smoothing Agent
Silicone oil, as a multifunctional lubricant, is widely used for mold release, anti-sticking, and smoothing processes. It has a long history of use in industries such as rubber, plastics, metal casting, glass, paper, and fiber production, and its application scope and usage continue to expand with technological advancements.
Classification and Properties of Silicone Oils
High-viscosity silicone oils: Provide excellent mold release and anti-sticking properties while maintaining a smooth surface finish.
Low-viscosity silicone oils: Possess excellent coatability and surface affinity, suitable for applications requiring fine coatings.
Typical Applications of Silicone Oils
Dimethyl silicone oil: A commonly used silicone oil with a viscosity range typically between 0.1 and 30 Pa·s, offering a balance between mold release and coating properties.
Methylphenyl silicone oil: Favored in certain specific applications, such as fiber production, due to its thermal stability and low viscosity-temperature coefficient.
Silicone Oil Formulation and Use
Silicone oil can be used alone or formulated into solutions, emulsions, aerosols, or pastes to meet different industrial needs.
Applications of Silicone Oil in the Textile Industry
Oil for Fiber Yarn and Raw Cotton: Low-viscosity dimethyl silicone oil is widely used as an oil due to its temperature resistance and colorfastness.
Oil for Spinning: Oils formulated with dimethyl silicone oil and methylphenyl silicone oil, combined with antistatic agents and emulsifiers, are used in the spinning process of synthetic fibers such as nylon, polyester, and spandex to effectively prevent yarn breakage and loosening.
Applications of Silicone Oil in Metal Casting
Mold Release Treatment: In melt spinning, dimethyl silicone oil is used for nozzle mold release treatment to prevent carbides or molten material from adhering, thereby avoiding yarn breakage.
II. Silicone Oil as a Refrigerant
In the field of refrigerants, branched siloxane oligomers such as methyltris(trimethylsiloxy)silane are widely studied and applied due to their excellent physicochemical properties.
Refrigerant Properties
Chemical Stability: The branched siloxane oligomer methyltris(trimethylsiloxy)silane is non-corrosive and environmentally friendly.
Non-toxic: Non-toxic to humans and the environment, meeting safety standards.
High Boiling Point: Boiling point exceeds 191℃, ensuring stability even at high temperatures.
Temperature Range: Suitable for low-temperature environments from -70℃ to -30℃.
