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A kind of conductive ink and preparation method thereof
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A technology of conductive ink and conductive carbon, which is applied in the direction of ink, coating, household utensils, etc., can solve the problems of silver particle sedimentation, affecting the conductive performance of products, and affecting printing effects, etc.
Active Publication Date: 2021-11-05
QILU UNIV OF TECH
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[0003] At present, the conductive ink mainly includes conductive silver ink, but the weight of silver in the conductive silver ink is relatively heavy. When the silver content in the conductive silver ink is high, the silver particles will settle, resulting in uneven dispersion of the ink and affecting the printing effect; and when the silver content in the ink is high When it is low, it will affect the conductivity of the conductive silver ink, and then affect the conductivity of the printed product
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[0026] The present invention also provides a preparation method of the conductive ink described in the above technical solution, comprising the following steps:
[0027] Conductive polymer, conductive carbon material, dispersant, surface active agent and organic solvent are ground and subjected to ultrasonic treatment to obtain conductive ink.
[0028] In the present invention, the grinding is preferably carried out in a planetary ball mill, the revolution speed of the grinding is preferably 300-400r / min, more preferably 320-380r / min; the rotation speed of the grinding is preferably 600-700r / min, more preferably 620-680r / min; the grinding time is preferably 5-10h, more preferably 6-8h.
[0029] In the present invention, after the grinding is completed, ultrasonic treatment is performed on the ground mixture. In the present invention, the power of the ultrasonic treatment is preferably 600-700W, more preferably 620-680W; the time of the ultrasonic treatment is preferably 5-10...
Embodiment 1
[0033] After mixing 5g polyaniline, 2g polythiophene, 3g graphene, 4g conductive carbon black, 10g hydroxymethyl cellulose and 70g N,N-dimethylformamide (abbreviated as DMF), grind it in a planetary ball mill for 5h , wherein the revolution speed is 300r / min, and the rotation speed is 600r / min. After the grinding is completed, the ultrasonic treatment is carried out under the condition of 600W power for 5h, and the conductive ink with good dispersibility is obtained.
Embodiment 2
[0035] After mixing 5g polythiophene, 3g polypyrrole, 4g carbon nanotube, 5g conductive carbon black, 8g hydroxymethyl cellulose, 5g hydroxyethyl cellulose and 90g N,N-dimethylacetamide (abbreviated as DMA) , Grind in a planetary ball mill for 6 hours, wherein the revolution speed is 400r / min, and the rotation speed is 700r / min. After the grinding is completed, ultrasonic treatment is carried out under the condition of 700W power for 6 hours to obtain conductive ink with good dispersibility.
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Abstract
The invention provides a conductive ink and a preparation method thereof, belonging to the field of printing materials. The conductive ink provided by the invention comprises the following components in parts by mass: 5-10 parts of conductive polymer, 5-20 parts of conductive carbon material, 5-20 parts of dispersant and 60-90 parts of organic solvent. The conductive ink provided by the present invention contains conductive polymer and conductive carbon material at the same time. The existence of conductive polymer avoids the sedimentation of conductive carbon material on the one hand, and effectively improves the conductive performance of conductive ink on the other hand; Under the action, the sedimentation of the conductive carbon material is further avoided, so that the conductive ink provided by the invention has the characteristics of uniform dispersion, not easy to sedimentation, and good conductivity.
Description
technical field [0001] The invention relates to the field of printing materials, in particular to a conductive ink and a preparation method thereof. Background technique [0002] Conductive ink is a new type of material, and the development of conductive ink has solved the problem of complex process when photolithography is used to prepare conductive circuits and electronic components in the prior art. The development of conductive ink is expected to make it possible to prepare various conductive circuits and electronic components by printing. [0003] At present, the conductive ink mainly includes conductive silver ink, but the weight of silver in the conductive silver ink is relatively heavy. When the silver content in the conductive silver ink is high, the silver particles will settle, resulting in uneven dispersion of the ink and affecting the printing effect; and when the silver content in the ink is high When it is low, it will affect the conductivity of the conductiv...
Claims
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