Silane Coupling Agent for FIR Fiber Bonding

The patent introduces a silane coupling agent as an intermediary substance between the inorganic silicon dioxide particles and the organic polymer matrix. This coupling agent contains both inorganic-binding groups (such as alkoxy groups that bond to SiO2) and organic-binding groups (such as alkyloxy groups that bond to the polymer), creating a chemical bridge that significantly improves interfacial adhesion. The coupling agent forms covalent bonds with both the inorganic filler and the polymer matrix, preventing particle separation during washing while maintaining the far infrared radiation generation capability of the silicon dioxide.

The silane coupling agent serves as a durable intermediary that anchors the inorganic silicon dioxide particles to the polymer matrix through strong chemical bonds. This intermediary layer prevents the inorganic particles from detaching during washing cycles, thereby maintaining the far infrared radiation capability throughout the product's service life. The coupling agent's dual functionality ensures both the functional performance (FIR emission) and the durability (washing resistance) are preserved simultaneously.

The silane coupling agent acts as a compatibilizer that bridges the incompatible inorganic and organic phases. The inorganic-binding portion of the coupling agent interacts with the silicon dioxide surface, while the organic-binding portion interacts with the polymer matrix, thereby improving interfacial adhesion and dispersion. This intermediary substance enables the effective incorporation of inorganic fillers into organic polymers, achieving both enhanced far infrared emissivity and improved material compatibility.