漆器研磨炭(駿河炭)の物性と研磨性能(<小特集>木質材料小特集)

概要

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Abrasive charcoal for Japan lacquer ware, called Surugazumi, is made from Aleurites species and the portion with narrow annual ring width is selected based on many years experience. The physical properties of the abrasive charcoals which were made in various processing conditions and their performance evaluation for sanding were investigated. (1) DSC (Differential Scanning Calorimetry) analysis of thermal decomposition on abrasive charcoal was effective to evaluate the carbonization degree. W-ray analysis showed that the carbonizing temperature had a direct effect upon crystallites of charcoal contributing to hardness. (2) A good abrasive charcoal could be classified by hardness pencil and frequency of sound in sanding the surface of Japan lacquer ware. (3) The good abrasive charcoal, which was selected from the portion with narrow annual ring width and was charred at 800℃, had a larger coefficient in sanding the surface of Japan lacquer and led the sanding depth to be deeper. (4) The good abrasive charcoal might be easier to sand even in water with sanding residue because it has a large amount of vessels.
社団法人日本材料学会の論文
1988-05-15