Recently, a new generation of silicone tougheners represented by PARALOID TMS-2672 and TMS-2670J has been officially launched, successfully solving the industry pain point of high brittleness of epoxy resins after curing. While maintaining their original strength, chemical resistance and insulation, the toughness is significantly improved, bringing technological innovation to fields such as coatings, adhesives and composite materials. Epoxy resins are widely used in various industries due to their excellent performance, but after curing, they have high crosslinking density and limited movement of molecular chains, with elongation at break less than 2% and fracture toughness only 0.8-1.0 MPa·m¹/², which are prone to cracking under extreme environments or impacts. Traditional toughening solutions such as adding CTBN rubber can improve flexibility but sacrifice heat resistance and modulus. The new generation of silicone tougheners adopts an innovative "core-shell structure" design. The internal polysiloxane phase can efficiently absorb impact energy, and the shell has excellent compatibility with the epoxy matrix. Produced through a low-temperature process, it avoids particle agglomeration and forms a uniform nano-elastomer network in liquid epoxy. Tests show that adding 5% TMS-2670J can increase the fracture toughness of epoxy resin to 2.4 MPa·m¹/², which is 3 times that of unmodified products, while the Tg value remains basically stable without affecting the temperature resistance of the system. This series of products is environmentally friendly without volatile solvents, has little impact on viscosity, and is easy to process even at high addition levels. It is suitable for high-performance coatings, epoxy structural adhesives, composite materials and other scenarios, and can improve the impact resistance of automotive primers, the peel resistance of structural adhesives and the service life of wind turbine blade composites. The recommended addition amount is 5%-15% of the total epoxy resin, which can be fully dispersed by high-shear mixing after preheating. The launch of this innovative product removes obstacles for the application of epoxy resins in high-stress and high dynamic load scenarios, and promotes the upgrading of related downstream industries. For more information, you can click: https://www.tiktok.com/@mia_iot