一种3D打印用纳米银浆及提升其均一性的分散方法与应用

By controlling the polarity of the reaction liquid and using the cross-linking products of the coating agent, combined with physical dispersion technology, the problems of uneven dispersion and material blockage of conductive silver paste in high-precision 3D printing were solved, achieving high-precision printing and good conductivity, and improving the stability and adhesion of nano silver paste.

CN117038201BActive Publication Date: 2026-07-17ENOVATE3D (HANGZHOU) TECH DEV CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ENOVATE3D (HANGZHOU) TECH DEV CO LTD
Filing Date
2023-08-30
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing conductive silver pastes suffer from uneven dispersion, easy clogging, and incomplete or broken printed circuits in high-precision metal 3D printing processes of 10μm and below, resulting in decreased conductivity.

Method used

By employing specific dispersing solvents and coating agents and their crosslinking products, and by controlling the polarity and dispersion mode of the reaction solution, combined with physical dispersion technology, the uniform dispersion of silver particles in the nano-silver paste is ensured, avoiding agglomeration and sedimentation, and improving adhesion.

Benefits of technology

It achieves smooth material output during high-precision metal 3D printing of nano-silver paste at 10μm and below, complete circuit after high-temperature sintering, good conductivity, strong adhesion, and no need to add additional organic resin.

✦ Generated by Eureka AI based on patent content.

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Abstract

本发明属于导电银浆制备方法技术领域,具体涉及一种3D打印用纳米银浆及提升其均一性的分散方法与应用。本发明采用特定的分散溶剂并控制其用量从而实现有效控制纳米银浆中作为有机配体的包覆剂及包覆剂与有机胺的交联产物保留量稳定,进一步提高银颗粒在纳米银浆中的分散均一性,确保纳米银浆在10μm及以下高精度金属3D打印过程中出料顺畅、高温烧结后导电性好、粘附性强,无需另外添加其他有机树脂。本发明采用超过一定强度的物理分散方式进一步防止银颗粒之间发生二次团聚,促使银颗粒与游离的包覆剂混合均匀,从而提高银颗粒在纳米银浆中的分散均一性,显著改善纳米银浆在10μm以下打印出料过程中的堵料情况,并且在550℃烧结后线路仍能保持完整的线型。
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