| 摘要: |
| 目的 研究碳纳米管与石墨烯对复合碳系导电油墨性能的影响，开发性能优异的导电油墨。方法 分别探究碳纳米管管径尺寸、碳纳米管与石墨烯的配比、油墨中的碳质量分数及油墨涂层厚度对复合碳系导电油墨导电性的影响，并基于实验数据对各影响因素拟合出相应的预测模型。最终确定油墨的优选配比，并对采用优选配比制备的导电油墨涂层进行电热转换测试。结果 由石墨烯和管径尺寸为25 nm的多壁碳纳米管为导电填料制备的导电油墨涂层综合导电性能最优，当导电油墨中碳质量分数为2.5%(纳米管质量分数为0.125%、石墨烯质量分数为2.375%)、水性丙烯酸树脂质量分数为5.25%、油墨涂层固化后厚度为0.147 mm时，油墨导电涂层电阻率为0.089 3 Ω.cm。在外接电压为5 V的条件下，导电油墨的功率为13.49 W，由室温通电工作至100 ℃仅需13.723 s，油墨涂层发热均匀性满足JG/T 286—2020的要求。结论 采用优选配比制备的油墨涂层内部搭建起均匀丰富的导电网络，极大地提升了油墨的导电性，使得油墨电热性能优异。 |
| 关键词: 石墨烯 碳系电热油墨 电热性能 低压发热 |
| DOI：10.19554/j.cnki.1001-3563.2023.07.003 |
| 分类号:TB332 |
| 基金项目:黑龙江省自然基金重点项目(ZD2021E001);广东省重大专项研发计划项目(2020B020216001) |
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| Preparation and Properties of Composite Carbon-based Conductive Ink |
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ZHANG Zi-hao, YANG Chun-mei, QU Wen, LI Bo, ZHANG Jia-wei
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(Northeast Forestry University, Harbin 150040, China)
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| Abstract: |
| The work aims to study the effect of carbon nanotubes and graphene on the electrothermal properties of composite carbon-based conductive ink, and develop conductive ink with excellent properties. The effects of carbon nanotube diameter size, different ratios of carbon nanotubes to graphene, carbon mass fraction in the ink and coating thickness of the ink on the conductivity of the composite carbon-based conductive ink were investigated, and the corresponding prediction models for each influencing factor were fitted based on the experimental data. The preferred ratios of the ink were determined, and the conductive ink coating prepared according to the preferred ratios were tested for electrical and thermal conversion. The conductive ink coating prepared with graphene and multi-walled carbon nanotubes with a diameter of 25 nm as conductive filler had the best overall conductivity. When the carbon mass fraction in the conductive ink was 2.5% (MWCNTS-0.125%, graphene-2.375%), the amount of water-based acrylic resin added was 5.25%, the coating thickness of the ink after curing was 0.147 mm, the electrical resistivity of the ink conductive coating was 0.089 3 Ω.cm. The power was 13.49 W under the condition of external voltage of 5 V, and the working time from room temperature to 100 ℃ was only 13.723 s. The heating uniformity of the ink coating met the requirements of national standard JG/T 286-2020. The ink coating prepared according to the preferred ratio builds up a uniform and rich conductive network inside the ink, which greatly enhances the conductivity of the ink and contributes to the excellent electrothermal property of the ink. |
| Key words: graphene carbon-based electrothermal ink electrothermal property heating at low voltage |
