Method for manufacturing metal microparticle paste

JP7864298B2Active Publication Date: 2026-05-25HOKKAIDO UNIVERSITY +1
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
HOKKAIDO UNIVERSITY
Filing Date
2022-03-31
Publication Date
2026-05-25

AI Technical Summary

Benefits of technology

【0013】 本発明に係る製造方法によれば、攪拌装置における周壁の内周面および回転羽根の外周面の少なくともいずれか一方に複数の凹部が設けられることで、周壁の内周面と回転羽根の外周面との隙間にある原料ペーストには、飛躍的に強いせん断力が付加される。これにより、金属微粒子の凝集物の解砕を促進させ、ペーストの分散安定性を高めることができる。原料ペーストが高濃度の金属微粒子を含有する場合においても、強固に凝集した金属微粒子の凝集物を十分に解砕し、数分から10分程度の短時間の処理で所望の分散状態を得ることができる。したがって、本発明によれば、高濃度の金属微粒子が適切に分散した金属微粒子ペーストを製造することができる。

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Abstract

To provide a manufacturing method for a metallic fine particle paste suitable for dispersion treatment of a raw material paste containing high concentration of metal particulates.SOLUTION: In a manufacturing method in which a raw material paste obtained by mixing metallic fine particles with a solvent are stirred to manufacture a metallic fine particle paste in which the metallic fine particles are dispersed in the solvent, by using a stirring device A1 comprising a stirring tank 1 having a cylindrical peripheral wall 11, a cylindrical rotary vane 4 arranged in the stirring tank 1 through a gap with the peripheral wall 11, and a drive source (a drive motor 5 and a drive shaft 3) for rotating the rotary vane 4 concentrically with the stirring tank 1, an inner circumferential surface 111 of the peripheral wall 11 is provided with a plurality of recesses 111a, and the manufacturing method comprises a stirring process of supplying the raw material paste to the stirring tank 1 and rotating the rotary vane 4 to stir the raw material paste while pressing it into a thin film on the inner circumferential surface 111.SELECTED DRAWING: Figure 2
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