COATING TYPE BODY PANEL REINFORCEMENT SEALER COMPOSITION FOR REDUCING SHRINKAGE OF BODY PANEL UPON CURING TO INCREASE RIGIDITY OF OUTSIDE PANEL FOR CARS

摘要

PURPOSE: Provided is a coating type body panel reinforcement sealer composition, which reduces the shrinkage of the panel when curing the panel to increase the rigidity of an outside panel for cars, and improves low-temperature impact resistance. CONSTITUTION: The coating type body panel reinforcement sealer composition comprises an epoxy resin as main component, a curing agent, curing accelerator, filler, conductive agent, stabilizer and other additives, wherein the epoxy resin comprises 5-30 wt% of a dimer modified epoxy resin and 20-40 wt% of glycidyl ether type epoxy resin and the composition further comprises 3-15 wt% of a polyester resin. The dimer modified epoxy resin is a rubber polymerized epoxy resin selected from acrylic rubber modified resin and NBR modified epoxy resin.