| 摘要 |
PURPOSE:To provide the title material capable of being formed into a molding having a low water absorption, a low liability to undergo a dimensional change due to water absorption and an excellent appearance, by admixing a bisphenol A epoxy resin with a modified alicyclic amine, a modified alicyclic polyamine and a rubber component. CONSTITUTION:The title material is an outer packaging RIM material comprising a bisphenol A epoxy resin (A) as the main component, and admixed therewith 5-70wt.% modified alicyclic amine (B) of formula I, 5-20wt.% modified alicyclic polyamine (C) and 5-30wt.% rubber component (D) of formula II. The main component A serves to secure the mechanical strength of a molding formed from the material, while the components B and C serve to improve the impact resistance and heat resistance, respectively, of the molding. The component D serves to improve the creep characteristics as well as impact resistance of the molding. The above-mentioned components are mixed together in a mixing head and injected into a rubber or resin mold placed in a vacuum chamber, followed by molding. Thus, a molding having the above-mentioned characteristics provided by the respective components is obtd. |
