| 摘要 |
PURPOSE: A sealant composition for charging the joining part of a car-body panel and adhering a car-body panel is provided, which exhibits an excellent adhesive strength irrespective of the kind of the panel. CONSTITUTION: The sealant composition comprises 10-23 wt% of acryl rubber or nitrile-butadiene rubber modified epoxy resin; 5-15 wt% of silicon modified epoxy resin, amine-terminated butadiene acrylonitrile copolymer modified epoxy resin or carboxy-terminated butadiene acrylonitrile copolymer modified epoxy resin; 3-10 wt% of dimer modified epoxy resin; 5-16 wt% of bisphenol F-type epoxy resin or bisphenol A-type epoxy resin; 1-3 wt% of CaO (95% or more) as a humectant; 15-40 wt% of at least one selected from coated or uncoated calcium carbonate, talc, silica, zinc oxide powdered fillers; 2-6 wt% of glass beads; 2-10 wt% of conductive carbon black; 2-6 wt% of at least one selected from dicyandiamide and modified dicyandiamide; 0.2-3.0 wt% of imidazole as a curing accelerator; and 5-12 wt% of carboxy glycidyl ester as a reactive diluent. |
