Preparation method of nano-silver paste for electric field driven jet micro-nano 3D printing

A nano-silver paste, 3D printing technology, applied in the direction of nanotechnology, nanotechnology, nanotechnology, etc. for materials and surface science, can solve the problem of difficult to achieve ultra-fine, large aspect ratio high-performance conductive pattern manufacturing, nano-silver It is difficult to meet the technical requirements of the slurry, the agglomeration of nano-silver materials and other problems, and achieve the effects of good dispersion performance and electrical conductivity, low cost and short production cycle

Active Publication Date: 2020-05-19
QINGDAO TECHNOLOGICAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the problems existing in the above-mentioned prior art, the purpose of the present invention is to provide a preparation method suitable for electric field-driven jet micro-nano 3D printing nano-silver paste, so as to solve the problem that the existing nano-silver paste is difficult to meet the requirements of electric field-driven jet micro-nano 3D printing. Due to the technical requirements, it is difficult to realize the manufacture of ultra-fine, large aspect ratio and high-performance conductive patterns, especially to solve the problem of unstable performance due to the agglomeration of nano-silver materials

Method used

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  • Preparation method of nano-silver paste for electric field driven jet micro-nano 3D printing
  • Preparation method of nano-silver paste for electric field driven jet micro-nano 3D printing
  • Preparation method of nano-silver paste for electric field driven jet micro-nano 3D printing

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Effect test

Embodiment 1

[0038] A nano-silver paste for electric field-driven spraying micro-nano 3D printing technology, its composition includes: modified nano-silver powder 55wt%, organic vehicle 39wt%, polyurethane resin 3wt%, epoxy resin 3wt%, silver powder A spherical silver powder with a diameter of 300nm.

[0039] Concrete preparation process is as follows:

[0040](1) Preparation of modified nano-silver powder: take a certain proportion of succinic acid and PVP and be dissolved in ethanol solution respectively, obtain succinic acid-ethanol solution as solution I, and PVP-ethanol solution as solution II; The mass ratio of diacid and silver powder is 1:1 and takes by weighing corresponding silver powder, slowly adds the silver powder that takes by weighing in the solution I, is placed on the magnetic stirrer and stirs 30min, pours off supernatant after standing layering, and then Add the prepared solution II, ultrasonically treat for 60 minutes, and stir simultaneously during the ultrasonic st...

Embodiment 2

[0045] Provide a nano-silver paste for electric field-driven spraying micro-nano 3D printing technology, its composition includes: nano-modified silver powder 65wt%, organic vehicle 27wt%, alkyd resin 4wt%, epoxy resin 4wt%, The silver powder is a spherical silver powder with a particle size of 300nm.

[0046] Concrete preparation process is as follows:

[0047] Process one: the preparation of nano-modified silver powder: take a certain proportion of succinic acid and PVP and dissolve them in ethanol solution respectively, and obtain succinic acid-ethanol solution as solution I, and PVP-ethanol solution as solution II; The mass ratio of diacid and silver powder is 1:1 and takes by weighing corresponding silver powder, slowly adds the silver powder that takes by weighing in the solution I, is placed on the magnetic stirrer and stirs 30min, pours off supernatant after standing layering, and then Add the prepared solution II, ultrasonically treat for 60 minutes, and stir simulta...

Embodiment 3

[0052] Provides a nano-silver paste for electric field-driven spraying micro-nano 3D printing technology, its composition by weight includes: silver powder 75wt%, organic vehicle 19wt%, alkyd resin 3wt%, epoxy resin 3wt%, silver powder particle size Spherical silver powder with a size of 300nm.

[0053] Concrete preparation process is as follows:

[0054] Process one: the preparation of modified nano-silver powder: take a certain proportion of succinic acid and PVP and dissolve them in ethanol solution respectively, and obtain succinic acid-ethanol solution as solution I, and PVP-ethanol solution as solution II; The mass ratio of diacid and silver powder is 1:1 to take by weighing corresponding silver powder, slowly add the silver powder that weighs in the solution I, be placed on the magnetic stirrer and stir 30min, pour off the supernatant after standing stratification, put The prepared solution II is poured into the beaker of solution I containing silver powder, ultrasonic...

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Abstract

The invention provides a preparation method of nano-silver paste for electric field driven jet micro-nano 3D printing, and belongs to the technical field of conductive silver paste and micro-nano 3D printing. The nano-silver paste is composed of modified nano-silver powder, an organic carrier and polymer resin, wherein the weight ratio of the modified nano-silver powder to the organic carrier to the polymer resin is 55-75: 15-40: 1-10; and the organic carrier is composed of an organic solvent, a thickener, a plasticizer, a surfactant, a dispersing agent, a leveling agent and an additive, wherein the weight percentage ratio of the organic solvent to the thickener to the plasticizer to the surfactant to the dispersing agent to the leveling agent to the additive is 60-90: 2-10: 3-10: 1-8: 1-10: 1-10: 1-10. By modifying the nano-silver powder and adjusting all the components, the viscosity of the nano-silver powder is matched with electric field driven jet micro-nano 3D printing, ultra-fine large-depth-width-ratio high-performance conductive pattern manufacturing is achieved, and finally, excellent adhesive force and conductive performance are achieved, and particularly, the problem that due to agglomeration of nano silver materials, the use performance is unstable is solved.

Description

technical field [0001] The invention belongs to the technical field of conductive silver paste and micro-nano 3D printing, and in particular relates to a method for preparing nano-silver paste for electric field-driven spraying of micro-nano 3D printing. Background technique [0002] Electric field-driven jet micro-nano 3D printing is a new micro-nano 3D printing and micro-nano additive manufacturing technology that has emerged in recent years. It is based on a self-excited electrostatic field, using electrohydrodynamic jetting and charge-induced self-alignment, combined with pulsed cone jets. , continuous cone jet and micro-extrusion three printing working modes, realize the high-efficiency and low-cost mass production of large-area and complex three-dimensional micro-nano structures, especially in multi-material multi-scale 3D printing, macro / micro cross-scale 3D printing. Unique strengths and potential. At present, it has been applied in many fields such as flexible elec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B1/22H01B13/00B82Y30/00
CPCB82Y30/00H01B1/22H01B13/00
Inventor 兰红波李红轲张广明朱晓阳杨建军
Owner QINGDAO TECHNOLOGICAL UNIVERSITY
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