弾力性に富むグラフィティック系摩擦材料の開発とその湿式摩擦特性

概要

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For improving graphitic friction materials used up to now, we have developed and evaluated a new kind of graphitic friction material. The new material has improved properties such as high μ_d, high capacity of energy absorption and low wear. More importantly, the μ_d decreases with the increase of velocity. The new material, produced by powder metallurgy, is composed of NBR, aromatic polyamide fiber, carbon fiber, granulated pulp fiber, graphite, rubber-coated (or rubber-impregnated) exfoliated graphite, CaF_2, SiO_2 and polyimide resin. The results indicate that its μ^- velocity characteristics are similar to that of paper materials ; it possesses porosity as high as 40%, modulus of elasticity as low as 200 MPa and high wear resistance. The capacity of energy absorption is two times higher than that of heavy-duty sintered metallic materials under a wide range of operating conditions.
社団法人日本機械学会の論文
1994-04-25