炭黑/芳纶沉析/碳纤维纸的制备及电热性能分析

Fabrication and Analysis of Electric Heating Property of Carbon Black/Aramid Fibrid/ Carbon Fiber-based Paper

关键词:  碳纤维纸  电热  湿法造纸工艺

Key Words:carbon fiber-based paper  electric heating  wet-forming process

摘要:以碳纤维为电热骨架、炭黑为导电桥梁、芳纶沉析纤维为辅助成形浆料，通过湿法成形工艺制备炭黑/芳纶沉析/碳纤维纸。结果表明，炭黑/芳纶沉析/碳纤维纸（炭黑含量10%、芳纶沉析纤维含量20%、碳纤维含量70%）在固含量15%的酚醛树脂浸渍热压处理后性能最佳，抗张强度1989 kN/m、撕裂度1057 mN、方阻1.5 Ω/□；在8 V电压下，所制备的炭黑/芳纶沉析/碳纤维纸电加热后表面温度最高可达242.5℃。

Abstract:Using carbon fiber as electric heating skeleton， carbon black as conductive path， and aramid fibrid as auxiliary forming slurry， the carbon black/aramid fibrid/carbon fiber-based paper was fabricated via wet-forming process. The results showed that the paper comprising of 10% carbon black， 20% aramid fibrid， and 70% carbon fiber after impregnated with 15% phenolic resin and hot-press exhibited the best comprehensive performance. The tensile strength， tearing strength， and sheet resistance of the paper reached 1989 kN/m， 1057 mN， and 1.5 Ω/□， respectively. With supplied voltage of 8 V， the highest surface temperature of the paper after electric heating could reach 242.5℃.