羧甲基纤维素对多壁碳纳米管导电墨水性能的影响

贾鑫; 毕红杰; 任泽春; 杨海英; 许民

doi:10.13801/j.cnki.fhclxb.20210104.002

羧甲基纤维素对多壁碳纳米管导电墨水性能的影响

doi: 10.13801/j.cnki.fhclxb.20210104.002

东北林业大学　生物质材料科学与技术教育部重点实验室，哈尔滨 150040

基金项目: 国家重点研发计划(2018YFD0600302)

详细信息

通讯作者:
许民，教授，博士生导师，研究方向为生物质复合材料等　 E-mail：xumin1963@126.com

中图分类号: TB332
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出版历程
- 收稿日期: 2020-11-13
- 录用日期: 2020-12-21
- 网络出版日期: 2021-01-05
- 刊出日期: 2021-11-01

Effect of carboxymethyl cellulose on the properties of multi-wall carbon nanotube conductive ink

Key Laboratory of Bio-based Material Science and Technology of Ministry of Education, Northeast Forestry University, Harbin 150040, China

摘要

摘要: 传统中性墨水多用丙烯酸树脂做增稠剂，且不具备导电能力，因此将羧甲基纤维素(CMC)与多壁碳纳米管(MWCNT)混合，使制备墨水书写后具备导电能力。采用超声制得CMC-MWCNT导电墨水，通过中性笔书写于纸上，对制备导电墨水的稳定性能、流变性能、书写性能和书写字迹的耐腐蚀性能、导电性能、折叠稳定性能进行分析，并与市场上晨光中性笔墨水(CG)进行对比。当添加CMC为0.3wt%、0.6wt%时，导电墨水的Zeta电位、屈服应力、屈服黏度均较低，书写时出现漏墨，书写后电阻较小，但折叠一百次后电阻增大较多，分别增大32.3%、17.9%。当添加CMC为0.9wt%、1.2wt%、1.5wt%时，导电墨水的Zeta电位绝对值均大于30 mV，体系处于稳定态；屈服应力与屈服黏度随CMC添加量增大而增大；CMC为0.9wt%和1.2wt%的导电墨水书写正常，书写后电阻分别为14.9 kΩ/cm、15.6 kΩ/cm，折叠100次后电阻分别增大8.7%、7.8%；1.5wt%CMC的导电墨水书写时有断墨，书写后电阻为28.3 kΩ/cm，折叠100次后电阻增大9.5%。与CG相比，1.2wt%CMC的导电墨水具有相似的稳定性能、流变性能、书写性能，并具备导电能力，可点亮LED灯。
- 导电墨水 /
- 羧甲基纤维素 /
- 多壁碳纳米管 /
- 流变性能 /
- 导电性能 /
- 折叠稳定性
Abstract: Thetraditional neutral ink is mostly made of acrylic resin as thickener, and does not have the ability to conduct electricity. Therefore, this study explored the mixing of carboxymethyl cellulose (CMC) and multi-wall carbon nanotubes (MWCNT) to make the prepared ink conductive after writing. CMC-MWCNT conductive ink was prepared by ultrasonic and written on paper with a neutral pen. The stability, rheological property, writing property, corrosion resistance, electrical conductivity, and folding stability of the prepared conductive ink were analyzed, and compared with Chenguang neutral ink (CG) on the market. When the amount of CMC is 0.3wt% and 0.6wt% respectively, the Zeta potential, yield stress and yield viscosity of conductive ink are all low, ink leakage occurred during writing. And the line resistance of writing is small, but the resistance increases a lot after 100 times of folding, increasing by 32.3% and 17.9%, respectively. When CMC is added at 0.9wt%, 1.2wt% and 1.5wt%, respectively, the absolute value of Zeta potential of conductive ink is greater than 30 mV, and the system is in a stable state. The yield stress and viscosity increased with the increase of CMC. When CMC content is 0.9wt% and 1.2wt%, respectively, the conductive ink writing is normal, the resistance of the writing lines are 14.9 kΩ/cm, 15.6 kΩ/cm, and the resistance increases by 8.7% and 7.8% after 100 times of folding. The conductive ink of 1.5wt% CMC content is broken when writing, the resistance after writing is 28.3 kΩ/cm, and the resistance increases by 9.5% after 100 times of folding. Compared with CG, conductive ink of 1.2wt% CMC has similar stable performance, rheological performance, and writing performance. In addition, conductive ink of 1.2wt% CMC has electrical conductivity and can light up LED lights.
- conductive ink /
- carboxymethyl cellulose /
- multi-wall carbon nanotubes /
- rheological /
- conductivity /
- folding stabality

HTML全文

图 1 导电线段折叠平展循环

Figure 1. Folding and unfolding cycle of a conductive wire

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图 2 墨水的Zeta电位

Figure 2. Zeta potential of ink

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图 3 (a) 羧甲基纤维素-多壁碳纳米管(CMC-MWCNT)和晨光中性笔墨水(CG)的剪切应力-剪切速率曲线; (b) CMC-MWCNT-1.2剪切黏度-剪切应力曲线

Figure 3. (a) Carboxymethyl cellulose-multi-wall carbon nanotubes (CMC-MWCNT) and Chenguang neutral ink (CG) shear stress-shear rate curve; (b) CMC-MWCNT-1.2 shear viscosity-shear stress curve

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图 4 CG和不同CMC含量CMC-MWCNT的屈服应力和屈服黏度

Figure 4. Yield stress and yield viscosity of CG and CMC-MWCNT with different CMC contents

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图 5 不同CMC含量CMC-MWCNT和CG书写字迹

Figure 5. Different CMC contents CMC-MWCNT and CG handwriting

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图 6 不同CMC含量CMC-MWCNT和CG耐腐蚀处理

Figure 6. Different CMC contents CMC-MWCNT and CG corrosion resistance treatment

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图 7 不同CMC含量CMC-MWCNT书写导电线段电阻值

Figure 7. Resistance values of conductive line written by CMC-MWCNT with different CMC content

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图 8 不同CMC含量CMC-MWCNT导电线段折叠100次电阻变化

Figure 8. Different CMC content CMC-MWCNT conductive line folded 100 times resistance changes

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图 9 CMC-MWCNT-1.2导电线段折叠100次纸基电路图

Figure 9. Paper-based circuit diagram of CMC-MWCNT-1.2 conducting line segment folding 100 times

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表 1 耐腐蚀测试条件

Table 1. Corrosion resistance test conditions

Testing agent Accepting surface Immersion time

H₂O A4 paper 24 h
50wt%C₂H₅OH 10 min
10wt%HCl 24 h
10wt%NH₃·H₂O 24 h

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