高分子で被覆したフリット粉末の作成とそのコロナ帯電特性(<小特集>粉体小特集)

概要

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The frit powders coated with methyl methacrylate polymer were prepared by polymerization of monomer. The reaction was carried out under various conditions by adding sulfurous acid solution to the mixed suspensions of methyl methacrylate monomer, powdered frit and water. The relation-ship between the polymer content in the polymer-coated frit and the reaction condition was studied by thermal analysis. The polymer content was found to be affected by the reaction temperature, the methyl methacrylate monomer to frit ratio, the amount of sulfurous acid and dissolved oxygen in water. The surface potential decay was measured in the corona-charged polymer-coated frit layers. The corona-charging properties of the powders were found to depend on the reaction condition. The polymer-coated frit prepared under the dissolved oxygen-free condition generally showed a high surface potential and its initial surface potential was as high as that of the methyl methacrylate polymer powder. On the other hand, the initial surface potential of the polymer-coated frit prepared in the oxygen-containing water was about half of the value of methyl methacrylate polymer powder. This may be attributed to the difference in corona-charging properties of the coatings of methyl methacrylate polymer.
社団法人日本材料学会の論文
1979-09-15