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Preparation method of conductive printing ink for gas sensor electrode material

A gas sensor and printing ink technology, applied in the field of printing electronic ink, can solve the problems of complex process and high cost, and achieve the effects of simple production process, low product cost and simple reaction steps

Inactive Publication Date: 2014-12-24
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] This method prepares interdigitated electrodes. Although the electrode accuracy is improved, the thickness of the metal layer formed by magnetron sputtering technology is relatively thin. In order to meet the sensor electrode requirements, gold or platinum is often used as the electrode material, and the process is complicated. and higher cost

Method used

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  • Preparation method of conductive printing ink for gas sensor electrode material
  • Preparation method of conductive printing ink for gas sensor electrode material
  • Preparation method of conductive printing ink for gas sensor electrode material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Dissolve 2.4g of PVA in 5ml of boiling water for activation and place it in a 1L three-neck flask, adjust the pH to 8~9 with 0.1% NaOH solution. Mix 110g of formaldehyde and 110g of urea into the three-necked flask, react at 45°C for 5-8min, about Raise the temperature to 75°C in 30 minutes, keep the temperature for 30 minutes, and adjust the pH value between 7 and 8 with 1% sodium hydroxide solution. Then add 37g of urea, lower the temperature to 70°C, and adjust the pH to 5~6 with 1% NaOH solution. Stop heating after 30 minutes of reaction, and keep warm for 30 minutes. Continue to add 10g of urea and 6.3g of melamine, and adjust the pH to 7~8 with 1% NaOH solution. After reacting for 30 minutes, the system was quickly cooled to below 40°C, and the modified urea-formaldehyde resin was obtained by discharging.

[0035] Mix 110g of formaldehyde and 110g of urea into a three-neck flask, react at 45°C for 5-8min, raise the temperature to 75°C in about 30min, and keep th...

Embodiment 2

[0038] Dissolve 2.4g of PVA in 5ml of boiling water for activation and place it in a 1L three-neck flask, adjust the pH to 8~9 with 0.1% NaOH solution. Mix 110g of formaldehyde and 110g of urea into the three-necked flask, react at 45°C for 5-8min, about The temperature was raised to 75°C in 30 minutes, the pH value was adjusted between 7 and 8 with 1% sodium hydroxide solution, and the temperature was kept constant for 30 minutes. Then add 37g of urea, lower the temperature to 70°C, and adjust the pH to 5~6 with 1% NaOH solution. Stop heating after 30 minutes of reaction, and keep warm for 30 minutes. Continue to add 10g of urea and 6.3g of melamine, and adjust the pH to 7~8 with 1% NaOH solution. After reacting for 30 minutes, the system was quickly cooled to below 40°C, and the modified urea-formaldehyde resin was obtained by discharging.

[0039] Mix 110g of formaldehyde and 110g of urea into a three-neck flask, react at 45°C for 5-8min, raise the temperature to 75°C in ...

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Abstract

The invention belongs to the field of printed electronics and particularly relates to a preparation method of a conductive printing ink for a gas sensor electrode material. The method comprises the following concrete steps: mixing modified urea resin with superconductive carbon black and adding 5wt% of curing agent and a proper amount of active diluent, so as to prepare the conductive printing ink for the sensor electrode material. The conductive printing ink is thermocured to obtain printed patterns, wherein the electrical resistivity of the printed patterns is 1-5 ohm.m, the thermal decomposition temperature exceeds 250 DEG C, and the cured carbon powder particles form a dense net structure by observation of an scanning electron microscope. The conductive ink prepared by the method has the advantage that the viscosity is easy to control and is suitable for various printing technologies, including but not limited to newly-developing addition process technologies such as ink-jet printing, aerosol spray printing and the like, and can also be suitable for traditional processes such as silk-screen printing, intaglio printing and the like, and compared with the method for preparing a chemical sensor electrode material at present, the method can save cost greatly.

Description

technical field [0001] The invention belongs to the technical field of printing inks for electronics, and relates to a method for preparing conductive printing inks for gas sensor electrode materials, which is suitable for printing electronics to prepare sensor electrode materials, and is especially suitable for emerging additive processes such as aerosol jet printing , inkjet printing technology, etc. Background technique [0002] The gas sensor is a very important sensor, which converts the gas type and its concentration-related information into electrical signals, and according to the strength of these electrical signals, information related to the presence of the gas to be measured in the environment can be obtained , so that detection, monitoring, and alarm can be performed; an automatic detection, control, and alarm system can also be composed of an interface circuit and a computer. At present, it is widely used in the detection of carbon monoxide gas, gas gas detecti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/52C09D11/103C09D11/30C08G12/40
Inventor 杨超杨振国
Owner FUDAN UNIV
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