I. Superior Softening Performance: Imparting a Silky Touch to Fabrics
The core advantage of aminosilicone oil lies in its unique molecular structure. Its backbone is a stable siloxane chain, with amino groups incorporated into the side chains, creating a "hard segment-soft segment" block structure. This structure enables aminosilicone oil to form a uniform lubricating film on the fiber surface, significantly reducing the static and kinetic friction coefficients between fibers. Experimental data shows that the static friction coefficient of cotton fabric treated with aminosilicone oil can be reduced to 0.12-0.15 and the kinetic friction coefficient to 0.08-0.10, significantly lower than the 0.3-0.4 of untreated fabric. This imparts a silky, soft feel, making it particularly suitable for finishing high-end apparel and home textiles.

II. Strong Adsorption and Washability: Ensuring Lasting Softness
The polarity of amino groups allows for strong adsorption to fiber surfaces, allowing them to adhere securely to fibers through hydrogen bonds, van der Waals forces, and other interactions. Compared to conventional silicone softeners, amino silicone oils offer 30%-50% greater fiber bonding strength. Even after 50 home washes, fabrics retain over 85% of their initial softness. This washability makes them an ideal choice for frequently laundered fabrics, such as bedding and curtains.

III. Functional Scalability: Meeting Diverse Needs
Amino silicone oils can be customized by adjusting the type (e.g., primary, secondary, or tertiary amines) and content of the amino group. For example, products with high amino content enhance fabric elasticity and are suitable for sportswear. Modification with epoxy groups increases crosslinking with fibers, further enhancing washability. Polyether-modified amino silicone oils exhibit hydrophilic properties, addressing the problem of traditional silicone oils often causing fabrics to lose moisture absorption. They are widely used in applications requiring high comfort, such as underwear and baby wear. Their multifunctional properties make them a versatile additive among textile auxiliaries.