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。
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.
作者
贾鑫
毕红杰
任泽春
杨海英
许民
JIA Xin;BI Hongjie;REN Zechun;YANG Haiying;XU Min(Key Laboratory of Bio-based Material Science and Technology of Ministry of Education,Northeast Forestry University,Harbin 150040,China)
出处
《复合材料学报》
EI
CAS
CSCD
北大核心
2021年第11期3799-3807,共9页
Acta Materiae Compositae Sinica
基金
国家重点研发计划(2018YFD0600302)。
关键词
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
conductive ink
carboxymethyl cellulose
multi-wall carbon nanotubes
rheological
conductivity
folding stabality
