The types of silicone oil commonly used in car care products (such as dashboard care products, leather care products, tire polishes, etc.) mainly include the following types, which are widely used for their lubricity, hydrophobicity, high temperature resistance and gloss effect:
Dimethicone
Features: The most commonly used type of silicone oil, colorless and odorless, chemically inert, high temperature resistant (-40℃~200℃), with excellent lubricity and film-forming properties.
Applications:
Instrument panel and plastic parts maintenance: Forms a protective film to prevent dust and scratches.
Tire polish: Provides gloss and delays rubber aging.
Leather care agent: Increases softness and water resistance.
In addition, the choice of dimethicone viscosity depends mainly on the specific application scenario and the desired effect. Silicone oils of different viscosities will bring different gloss, film-forming properties and feel.
Cyclomethicone
Features: Volatile silicone oil, evaporates quickly after application, leaving a uniform protective layer without any residue.
Application:
Fast-drying care products (such as spray-type cleaning and maintenance agents).
Avoids greasy feeling, suitable for interior surfaces.
Aminopropyl Silicone
Features: Contains amino functional groups, strong adsorption, provides long-lasting protection and deep moisturizing effect.
Application:
High-end leather care agent: enhances leather softness and wrinkle resistance.
Fabric seat care agent: anti-static, anti-fouling.
Phenyl Trimethicone
Features: High refractive index, more significant gloss effect; good UV resistance.
Applications:
Tire brightener: Enhances reflective effect.
Exterior plastic repair: Restores the color of dark plastics.
Polyether modified silicone oil (PEG/PPG-modified Silicone)
Features: good water solubility, easy emulsification, strong compatibility.
Application:
Water-based car care products (such as environmentally friendly cleaning and maintenance agents).
Improve stability when compounded with other ingredients.
Precautions
Avoid excessive use: Excessive use of silicone oil may cause the surface to be too slippery (such as reflective dashboard) or absorb dust.
Differentiate between uses:
Interior: Volatile or water-soluble silicone oil (such as cyclomethicone oil) is preferred.
Tires/exterior: High gloss type (such as phenyl silicone oil) is optional.
Environmental trend: Some high-end products use plant-derived ingredients (such as palm wax) instead of silicone oil to reduce environmental burden.
