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Nanosheet silver paste capable of magnetic conduction and orientation and preparation method thereof

A technology of nanosheets and silver pastes, applied in nanotechnology for materials and surface science, equipment for manufacturing conductive/semiconductive layers, magnetic materials, etc., can solve the problem that the advantages of nanosheet silver cannot be displayed, nano The application of sheet silver is not common, and the arrangement hinders the application of nano-sheet silver, so as to achieve the effect of no combination resistance and good combination

Active Publication Date: 2020-06-05
SHANGHAI TRANSCOM ELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in actual use, no matter whether nanosheet silver is used independently as a high-solid paste or mixed with resin to form a conductive adhesive, it is impossible to achieve a regular arrangement of silver sheets. Therefore, the shape advantage of nanosheet silver cannot be achieved. show that the application of nanosheet silver is not common, and the arrangement problem seriously hinders the application of nanosheet silver

Method used

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  • Nanosheet silver paste capable of magnetic conduction and orientation and preparation method thereof

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Effect test

Embodiment 1

[0031] The nanosheet silver paste that can be magnetically directed orientated includes nanosheet silver particles, and the nanosheet silver particles are nanometer-thick membranes with a structure of "silver-alloy-silver", wherein:

[0032] The monolayer thickness of described silver is 6nm;

[0033] The single layer thickness of the alloy is 8nm;

[0034] The total thickness of the nanosheet silver particles is 20 nm, and the particle size (d50) is 0.4 μm.

[0035] In this embodiment, the alloy is made of the alloy target material in the following weight percentages:

[0036] Iron 79.0%, Chromium 18.0%, Nickel 2.1%, Manganese 0.9%

[0037] In this embodiment, the silver is made of a silver target with a purity greater than 99.99%.

[0038] In this embodiment, the nanosheet silver paste that can be magnetically guided and oriented has a dark gray paste appearance, and it is composed of the following components by weight percentage:

[0039] Nanosheet silver particles 60% ...

Embodiment 2

[0049] The nanosheet silver paste that can be magnetically directed orientated includes nanosheet silver particles, and the nanosheet silver particles are nanometer-thick membranes with a structure of "silver-alloy-silver", wherein:

[0050] The monolayer thickness of described silver is 14nm;

[0051] The single layer thickness of the alloy is 12nm;

[0052] The total thickness of the nanosheet silver particles is 40 nm, and the particle size (d50) is 0.8 μm.

[0053] In this embodiment, the alloy is made of the alloy target material in the following weight percentages:

[0054] Iron 79.0%, Chromium 18.0%, Nickel 2.1%, Manganese 0.9%

[0055] In this embodiment, the silver is made of a silver target with a purity greater than 99.99%.

[0056]In this embodiment, the nanosheet silver paste that can be magnetically guided and oriented has a gray slurry appearance, and it is composed of the following components by weight percentage:

[0057] Nanosheet silver particles 50% sol...

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Abstract

A magnetically-conductive alignable nano-sheet silver paste comprising nano-sheet silver particles, wherein the nano-sheet silver particles are nano-thick film sheets having a structure of silver-alloy-silver, wherein the single layer thickness of the silver is 5 to 20 nm; The thickness of the single layer of the alloy is 5-20nm; The total thickness of the nanosheet silver particles is 15 to 60 nm, and the particle size (d50) is 0.3 to 1. M u.m. Compared with the prior art, the nano-sheet silver paste has the following beneficial effects: the multi-element alloy in the nano-sheet silver particles has magnetic conductivity, and the nano-sheet silver is arranged in a regular manner under the guidance of a magnetic mode, so that the shape advantage of the nano-sheet silver is fully brought into play, and a nano-sheet silver paste with high electric conductivity is obtained.

Description

technical field [0001] The invention relates to a nano-sheet silver paste capable of magnetic conduction and orientation, and also relates to a preparation method of the nano-sheet silver paste capable of magnetic conductance and orientation. Background technique [0002] At present, nano-conductive silver is a key material for the production of high-end electronic components. Nano silver mainly has three shapes: nano spherical silver, nano wire silver and nano flake silver. Nano flake silver refers to flake silver paste or silver powder with a thickness of 10 nm to tens of nm. Advantages in shape, silver flakes can be arranged in parallel, and the surface contact of silver particles makes the electrical conductivity better; the surface energy of flake silver is lower, the oxidation resistance is better, and the reliability of the electronic devices made is better; the coating of flake silver The area is larger, so the amount is less and the lines are finer. [0003] In or...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B1/02H01B1/22H01B13/00H01F1/44B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00H01B1/02H01B1/22H01B13/00H01B13/0026H01F1/442
Inventor 瞿晓岳
Owner SHANGHAI TRANSCOM ELECTRONICS TECH
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