YT - 3353 is a liquid core - shell toughening agent with polybutadiene rubber as the core and cycloaliphatic epoxy resin as the carrier. The proportion of the core - shell component is 30%, and its viscosity ranges from 6000 to 10000 mPa·s at 50℃. It can enhance the toughness of products in the fields of composite materials, adhesives, electronic materials and 3D printing materials.