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Submicron graphene silver powder suitable for 5G field and preparation method and application thereof

A sub-micron, silver powder technology, applied in the field of electronics and micro-nano, can solve the problem of uneven doping of graphene-doped silver powder, and achieve excellent physical and chemical properties and electrical conductivity, good dispersion, and uniform doping.

Pending Publication Date: 2022-04-01
SHAANXI COAL & CHEM TECH INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the problem of uneven doping of graphene-doped silver powder in the above-mentioned prior art, realize easy reaction and easy product handling, etc., and provide a submicron graphene silver powder suitable for 5G field and its preparation method and application

Method used

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  • Submicron graphene silver powder suitable for 5G field and preparation method and application thereof
  • Submicron graphene silver powder suitable for 5G field and preparation method and application thereof
  • Submicron graphene silver powder suitable for 5G field and preparation method and application thereof

Examples

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Embodiment 1

[0031] A method for preparing submicron RGO-doped silver powder applicable to the 5G field, comprising the steps of:

[0032] Step 1) Solution A: Add 1 g of RGO prepared into 1 L of ultrapure water, use a probe-type ultrasonic oscillator to sonicate for 30 minutes, and cool to room temperature for later use;

[0033] Solution B: Add 300g of silver nitrate into 1L of ultrapure water, stir continuously to dissolve it, and heat it to 30°C in a constant temperature water bath for later use;

[0034] Solution C: 166g of 80% hydrazine hydrate was added to solution A;

[0035] Solution D: add 100g polyvinyl alcohol and 5g oleylamine to solution C respectively, stir evenly, and heat to 30°C in a constant temperature water bath for later use;

[0036] In the case of uniform stirring, use a peristaltic pump to add solution B to solution D at a uniform speed, and the addition time is 5 minutes;

[0037] After the dropwise addition of the solution, continue to stir for 1 h, then filter,...

Embodiment 2

[0039] A method for preparing submicron RGO-doped silver powder applicable to the 5G field, comprising the steps of:

[0040] Step 1) Solution A: Add 1 g of RGO prepared into 1 L of ultrapure water, use a probe-type ultrasonic oscillator to sonicate for 30 minutes, and cool to room temperature for later use;

[0041] Solution B: Add 300g of silver nitrate into 1L of ultrapure water, stir continuously to dissolve it, and heat it to 30°C in a constant temperature water bath for later use;

[0042] C solution: the ascorbic acid of 233g is added in the A solution;

[0043] Solution D: Add 100g of Span 60 and 5g of Tween 80 into solution C, stir well, and heat to 30°C in a constant temperature water bath for later use;

[0044] In the case of uniform stirring, use a peristaltic pump to add solution B to solution D at a uniform speed, and the addition time is 3 minutes;

[0045] After the dropwise addition of the solution, continue stirring for 1.5 h, then filter, and freeze-dry f...

Embodiment 3

[0047] A method for preparing submicron RGO-doped silver powder applicable to the 5G field, comprising the steps of:

[0048] Step 1) Solution A: Add 1 g of RGO prepared into 1 L of ultrapure water, use a probe-type ultrasonic oscillator to sonicate for 30 minutes, and cool to room temperature for later use;

[0049] Solution B: Add 300g of silver nitrate into 1L of ultrapure water, stir continuously to dissolve it, and heat it to 30°C in a constant temperature water bath for later use;

[0050] Solution C: add 50g of formaldehyde to solution A;

[0051] Solution D: Add 100g of triethanolamine and 5g of sodium stearate into solution C, stir well, and heat to 30°C in a constant temperature water bath for later use;

[0052] In the case of uniform stirring, use a peristaltic pump to add solution B to solution D at a uniform speed, and the addition time is 1min;

[0053] After the dropwise addition of the solution, continue to stir for 2 hours, then filter, and freeze-dry for 1...

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Abstract

The invention discloses submicron graphene silver powder suitable for the 5G field and a preparation method and application of the submicron graphene silver powder, and belongs to the electronic field and the micro-nano field. Graphene oxide and silver nitrate are reduced at the same time through a liquid phase reduction method, graphene oxide can obtain a reduction product graphene and achieve uniform doping of graphene silver powder, in addition, graphene oxide of different sizes is selected, and the flake structure of the graphene oxide can play roles in controlling the particle size of the silver powder and dispersing the silver powder in the reaction process; the graphene doped silver powder which is uniform in doping and good in particle size and dispersity is further obtained, the silver powder prepared through the method not only has the characteristics of traditional precious metal, but also has the excellent physicochemical property and conductivity of graphene, and the prepared micro-nano silver powder has the characteristics of high conductivity, high adhesive force, good weldability and the like. The method is suitable for preparation of ceramic filters in the 5G field and preparation of conductive paste in other fields.

Description

technical field [0001] The invention belongs to the fields of electronics and micro-nano, and relates to a submicron graphene silver powder suitable for the 5G field and its preparation method and application. Background technique [0002] With the advent of the 5G era, various countries and manufacturers are vigorously developing 5G technology. As the core of wireless communication - an important part of the RF front-end, filters are particularly important to follow the development of 5G technology. At present, most of the 5G filters are ceramic filters, and the conductive silver paste is the key factor affecting the ceramic filter. The main components of conductive silver paste are: conductive phase-silver powder, bonding phase-glass powder and organic phase-carrier, in which silver powder is used as the conductive phase, which plays a decisive role in the overall performance of the silver paste, so how to improve the performance of silver powder materials to important. ...

Claims

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Application Information

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IPC IPC(8): B22F9/24B22F1/052B22F1/12H01B1/16H01B1/18H01B1/22H01B1/24
Inventor 兰峰毛磊磊陈静升赵超杨文
Owner SHAANXI COAL & CHEM TECH INST
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