In glass fiber manufacturing, the sizing formulation plays a critical role in the performance of the final composite. Among all the ingredients, silane coupling agents are the key because they create a strong bond between inorganic glass fibers and organic resin systems such as epoxy, polyamide (PA), and polyurethane (PU).
Two of the most widely used silanes are KH-550 (Amino Silane) and KH-560 (Epoxy Silane). Each has its own strengths, but using them together often delivers better overall performance by combining high mechanical strength with improved processing stability.
Key Benefits
Excellent adhesion to a wide range of resins
Improves both dry and wet mechanical strength
