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Preparation method of thermosetting carbon/silver composite nano conductive silver paste

A nano-conductive and composite nano-material technology, which is applied in the field of preparation of conductive paste, can solve the problems of increased production costs and silver paste prices, and achieves the effects of low price, easier control of process parameters, and simple preparation process

Active Publication Date: 2014-04-09
IANGSU JINLING SPECIAL PAINT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The rise in price has led to a sharp rise in the price of silver paste, resulting in a substantial increase in production costs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Take C / Ag composite nano conductive powder, the mass accounts for 58 kg of the total silver paste mass, and the average particle diameter is about 60 nm.

[0039] Add rosin modified epoxy resin (L-866) to account for 24 kg of the total silver paste, add 3 n-butanol and 783 slow-drying water

[0040] kg, add 1 kg of silane coupling agent and 10 kg of thickening type association agent 2026, add water to 100kg. The C / Ag composite nano conductive silver paste can be prepared by stirring at a speed of 60 rpm for 20 minutes.

[0041] Print the silver paste on the PET film by 300-mesh screen printing. After screen printing, use infrared drying or hot air curing at 130°C to 150°C for 20 minutes. Its printability is good, and its impedance is about 150 Ω (0.4mm wide line length 1 meter resistance).

Embodiment 2

[0043] Take C / Ag composite nano conductive powder, the mass accounts for 55 kg of the total silver paste mass, and the average particle diameter is about 450 nm, add polyurethane resin (BT1010, the mass accounts for 24 kg of the total silver paste mass), add n-butyl Add 3 kg of alcohol, cyclohexanone, and 783 slow-drying water, add 12 kg of thickening type association agent 2026, and stir at 70 rpm for 20 minutes to prepare C / Ag composite nano-conductive silver paste.

[0044] Print the silver paste on the PET film by 300-mesh screen printing. After screen printing, use infrared drying or hot air curing at 130°C to 150°C for 20 minutes. Its printability is good, and its impedance is about 120 Ω (0.4mm wide line length 1 meter resistance).

Embodiment 3

[0046] Take C / Ag composite nano conductive powder, the mass accounts for 68 kg of the total silver paste mass, and the average particle diameter is about 450 nm, add bisphenol A epoxy resin (E44, the mass accounts for 12 kg of the total silver paste mass), Add 4 kg each of n-butanol, cyclohexanone and 783 slow-dried water, add 6 Kg of thickening type association agent 2026, and the rest is water and stir at 60 rpm for 20 minutes to prepare C / Ag composite nano Conductive silver paste.

[0047] Print the silver paste on the PET film by 300-mesh screen printing. After screen printing, use infrared drying or hot air curing at 130°C to 150°C for 20 minutes. Its printability is good, and its impedance is about 143 Ω (0.4mm wide line length 1 meter resistance).

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Abstract

Thermosetting carbon / silver composite nano conductive silver paste and a preparation method thereof relate to the technical field of printed electronics, and the preparation method particularly relates to a preparation method of conductive paste in silk screen printing. C / Ag composite nano materials, resins, solvents and additives are mechanically and uniformly stirred to prepare the conductive paste; and the C / Ag composite nano materials, the resins, the solvents and the additives account for 55-72%, 10-25%, 10-20% and 6-15% of the total feeding mass respectively when in feeding. The preparation method is simple and convenient in technical process, low in cost and environment-friendly. The conductive silver paste is mainly dried through infrared or cured for 20 minutes in hot air at the temperature ranging from 130 DEG C to 150 DEG C after silk screen printing. The conductive silver paste has fine silk screen printability and electrical conductivity, and further has electrical conductivity controllability. The cost of the conductive silver paste is reduced by about 70% than that of traditional silver paste.

Description

technical field [0001] The invention relates to the technical field of printed electronics, in particular to the preparation process of conductive paste in screen printing. Background technique [0002] Printed electronics technology is an electronic manufacturing technology based on the principle of printing. It mainly uses some well-dispersed or water-soluble inorganic [0003] Or organic materials are printed and patterned to finally realize the manufacture of electronic components. Current printed electronics manufacturing process [0004] The main ink paste used is mainly conductive silver paste, and its main component is Ag nano or micro particles. In recent years, the price of precious metals [0005] The rise in price has led to a sharp rise in the price of silver paste, resulting in a substantial increase in production costs. Contents of the invention [0006] The object of the present invention is to provide a C / Ag composite nano conductive silver paste with l...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B1/22H01B1/24H01B13/00
Inventor 吴伟
Owner IANGSU JINLING SPECIAL PAINT CO LTD