ガラスセラミックスグリーンシート特性に及ぼす湿式粉砕方法の影響

概要

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In this study, the cause of the variation of strength and elongation of glass ceramics green sheet as a function of the dispersion medium of wet milling was investigated. Green sheets were made from a mixture of glass powders ground by wet milling, ceramic fillers, plastic binder and solvent. The used glass was consisted of MgO, Al_2O_3, SiO_2, B_2O_3 and K_2O. In case of using water as a dispersion medium, wet milled glass powder became porous, because MgO and B_2O_3 ingredients were highly dissolved into water solvent. Therefore, it was considered that a mechanical adhesion between glass powder and binder was enhanced, and green sheet with high tensile modulus and with low elongation was produced. On the other hand, in case of using xylene as a dispersion medium, the surface area of glass powder was much smaller than that by using water, because components of the glass did not dissolve. It was considered that the adhesive strength between glass powder and binder was low so that the elongation of green sheet was the almost same as that of binder only.
社団法人日本セラミックス協会の論文
1998-11-01