Preparation and rheological behavior of lead-free graphite conducting paste
Source abstract
Abstract
A lead-free graphite conducting paste was prepared by using graphite powder, lead-free barium boron low-melting glass and ethyl cellulose solution. By analyzing the sheet resistance, Vickers hardness as well as the adhesion strength of the fired film prepared by the pastes formulated with different composition, the composition of the paste with preferable properties was evaluated in weight percent: organic vehicle 60, graphite powder 15–20, and low-melting glass 20–25. The films, prepared by the pastes using the lead-free glass with a glass transition temperature of 476°C, were perfectly flat and compact after fired at a peak temperature within the range of 540 to 590°C. The sheet resistance of the fired film with glass content of 25 wt% was 135 Ω/mm2 at the film thickness of 25 ± 3 μm, while the Vickers hardness was 12.3 N/mm2 and the adhesion strength to soda lime silicate glass substrate was 45.6 N/mm2. In addition, the rheological, thixotropic, and viscoelasticity behaviors of the typical paste were characterized and the effects on the screen-printing ability were analyzed in detail. It is found that a slight flocculated network structure is formed in the paste at rest, but the flocculated structure is very slight due to the steric effect of the ethyl cellulose macromolecules and good dispersing. The rheological, thixotropic, and viscoelasticity behaviors of the typical paste were similar to those of the screen-printing pastes with a high solid content of filler.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Electrostatics and Colloid Interactions · Electrical and Bioimpedance Tomography · Electrochemical Analysis and Applications
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References (18)
Show source-provided references
1. Linyuan Cao, Jianbo Jia, Zhenhui Wang, Sensitive determination of Cd and Pb by differential pulse stripping voltammetry with in situ bismuth-modified zeolite doped carbon paste electrodes. Electrochim. Acta. 1(53), 2177–2182 (2008). doi: 10.1016/j.electacta.2007.09.02410.1016/j.electacta.2007.09.024 ↗
2. T Aramoto, F Adurodija, Y Nishiyama, T Arita, A Hanafusa, K Omura, A new technique for large-area thin film CdS/CdTe solar cells. Sol. Energy Mater. Sol. Cells. 75, 211–217 (2003). doi: 10.1016/S0927-0248(02)00161-710.1016/S0927-0248(02)00161-7 ↗
3. Hosny Ibrahim, Carbon paste electrode modified with silver thimerosal for the potentiometric flow injection analysis of silver(I). Anal. Chim. Acta. 545, 158–165 (2005) doi: 10.1016/j.aca.2005.04.08310.1016/j.aca.2005.04.083 ↗
4. Huishi Guo, Nongyue He, Shuxun Ge, Di Yang, Jinan Zhang, Molecular sieves materials modified carbon paste electrodes for the determination of cardiac troponin I by anodic stripping voltammetry. Microporous Mesoporous Mater. 85, 89–95 (2005) doi: 10.1016/j.micromeso.2005.06.02210.1016/j.micromeso.2005.06.022 ↗
5. Choi Hyung Do, Cho Kwasngyun, Han Seung, Electromagnetic and electromagnetic wave absorbing properties of the epoxy-carbon black composite. Polym-Korea. 21(1), 119–124 (1997)
6. R Morena, Phosphate glasses as alternatives to Pb-based sealing frits. J. Non-Cryst. Solids. 263 & 264, 382–387 (2000)10.1016/S0022-3093(99)00678-X ↗
7. Supriya A Ketkar, Govind G Umarji, Girish J Phatak, Jalindar D Ambekar, IC Rao, Uttam P Mulik, Dinesh P Amalnerkar, Lead-free photoimageable silver conductor paste formulation for high density electronic packaging. Mater. Sci. Eng. B. 132, 215–221 (2006) doi: 10.1016/j.mseb.2006.02.02710.1016/j.mseb.2006.02.027 ↗
8. Nicolas Roussel, A thixotropy model for fresh fluid concretes: Theory, validation and applications. Cem. Concr. Res. 36, 1797–1806 (2006) doi: 10.1016/j.cemconres.2006.05.02510.1016/j.cemconres.2006.05.025 ↗
9. Hung-Wen Lin, Chang-Pin Chang, Wen-Hwa Hwu, Ming-Der Ger, The rheological behaviors of screen-printing pastes. J. Mater. Sci. Technol. 197, 284–291 (2008)10.1016/j.jmatprotec.2007.06.067 ↗
10. R Lapasin, V Longo, S Rajgelj, Thixotropic behaviour of cement pastes. Cem. Concr. Res. 9, 309–318 (1979) doi: 10.1016/0008-8846(79)90123-610.1016/0008-8846(79)90123-6 ↗
11. R Lapasin, A Papo, S Rajgelj, Flow behaviour of cement pastes. A comparison of different rheological instruments and techniques. Cem. Concr. Res. 13, 349–356 (1983) doi: 10.1016/0008-8846(83)90034-010.1016/0008-8846(83)90034-0 ↗
12. J Assaad, K Khayat, H Mesbah, Assessment of thixotropy of flowable and self-consolidating concrete. ACI Mater. J. 100(2), 99–107 (2003)
13. D Boutelier, C Schrank, A Cruden, Power-law viscous materials for analogue experiments: New data on the rheology of highly-filled silicone polymers. J. Struct. Geol. 30, 341–353 (2008) doi: 10.1016/j.jsg.2007.10.00910.1016/j.jsg.2007.10.009 ↗
14. MS Nasser, AE James, Compressive and shear properties of flocculated kaolinite–polyacrylamide suspensions. Colloids and Surf. A. 317, 211–221 (2008) doi: 10.1016/j.colsurfa.2007.10.02110.1016/j.colsurfa.2007.10.021 ↗
15. Hanshan Wei, Yi Zhang, Jiarui Xu, The dynamic rheology behaviors of reactive polyacrylic acid/nano-Fe3O4 ethanol suspension. Colloids Surf. A. 296, 51–56 (2007) doi: 10.1016/j.colsurfa.2006.09.02110.1016/j.colsurfa.2006.09.021 ↗
16. Daisuke Tatsumi, Hitoshi Kourogi, Bo Chen, Takayoshi Matsumoto, Effect of natural additives on the rheological properties of cellulose fiber disperse systems. Colloids and Surf. A. 316, 151–158 (2008) doi: 10.1016/j.colsurfa.2007.09.00110.1016/j.colsurfa.2007.09.001 ↗
17. CS Choi, BJ Park, HJ Choi, Electrical and rheological characteristics of poly(vinyl acetate)/multi-walled carbon nanotube nanocomposites. Diamond Relat. Mater. 16, 1170–1173 (2007) doi: 10.1016/j.diamond.2006.11.07510.1016/j.diamond.2006.11.075 ↗
18. Su-Dong Park, Dong-Hee Han, Dayong Teng, Younghwan Kwon, Rheological properties and dispersion of multi-walled carbon nanotube (MWCNT) in polystyrene matrix. Curr. Appl. Phys. 8, 482–485 (2008) doi: 10.1016/j.cap.2007.10.06210.1016/j.cap.2007.10.062 ↗