| 摘要 |
PURPOSE:To provide a vibration damper which is suitable for use in spray application, can be used over a wide working temp. range and has excellent resistance to corrosion and impact and adhesion in cold heat cycle, consisting of an epoxy acrylate resin, a scaly inorg. material, a curing agent and a thixotropic agent. CONSTITUTION:100pts.wt. epoxy acrylate (A) obtd. by dissolving a prepolymer composed of an epoxy compd. having at least one epoxy group per molecule (e.g., a bisphenol A type epoxy compd.) and an acrylic acid compd. in a crosslinking agent (e.g., styrene), is blended with 10-80pts.wt. scaly inorg. material (B) having a particle size of 16-325 mesh (e.g., mica), 0.3-4.0pts.wt. curing agent (C) (e.g., methyl ethyl ketone peroxide), 0.2-5pts.wt. thixotropic agent (D) (e.g., asbestos fiber having a diameter of 0.01-0.1mu) and optionally, a filler, an accelerator, etc., (E) to obtain a vibration damper having a coefficient of composite loss of not lower than 0.1 at 70-140 deg.C as measured by B&K complex viscoelasticity measuring method. |
