电磁屏蔽复合纸的制备及其性能研究
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摘要
以机械浆纤维为主原料、碳纳米管为导电填料、纳米纤维素为导电填料分散剂,辅以其他填料及助剂,设计制备了电磁屏蔽复合纸,并对其性能进行研究。结果表明,碳纳米管的添加对所制备的复合纸的电阻率、电磁屏蔽性能、光学性能及力学性能有明显影响。随着碳纳米管的添加量在0～5%范围内增加,复合纸的电阻率下降了0.383Ω·cm,电磁屏蔽性能提升了15.8 dB,说明纸张的导电性能得到显著改善;另外,研究发现,随着碳纳米管的添加,复合纸的外观逐渐变黑、白度下降,同时纸张的不透明度和力学性能也呈现下降趋势。
In this paper, electromagnetic shielding composite paper was designed and prepared using mechanical pulp fiber as the main raw material, carbon nanotube as conductive filler and nanocellulose as dispersing agent. The results show that the addition of carbon nanotubes exerted a significant effect on the resistivity, electromagnetic shielding properties, optical properties and mechanical properties of the as-prepared composite paper. With the addition of carbon nanotubes in the range of 0～5%, the resistivity of the composite paper decreased by 0.383 Ω·cm, and the electromagnetic shielding performance increased by 15.8 dB, indicating a significant improvement in the electrical conductivity of the paper. In addition, it was found that with the addition of carbon nanotubes, the composite paper gradually became black, and exhibited decreased whiteness, opacity and mechanical properties.
In this paper, electromagnetic shielding composite paper was designed and prepared using mechanical pulp fiber as the main raw material, carbon nanotube as conductive filler and nanocellulose as dispersing agent. The results show that the addition of carbon nanotubes exerted a significant effect on the resistivity, electromagnetic shielding properties, optical properties and mechanical properties of the as-prepared composite paper. With the addition of carbon nanotubes in the range of 0～5%, the resistivity of the composite paper decreased by 0.383 Ω·cm, and the electromagnetic shielding performance increased by 15.8 dB, indicating a significant improvement in the electrical conductivity of the paper. In addition, it was found that with the addition of carbon nanotubes, the composite paper gradually became black, and exhibited decreased whiteness, opacity and mechanical properties.
引文
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[3]杨文斌,文月琴,宋剑斌.竹炭/石墨/环氧树脂电磁屏蔽复合材料性能研究[J].林业工程学报,2018(1):65-70.
[4]杨章静,张扬.基于掺杂聚苯胺的核壳型电磁屏蔽/吸波复合材料研究进展[J].高分子材料科学与工程,2018,34(9):181-188.
[5]张永翔,孙晓刚,庞志鹏,等.碳纳米管/纤维素纤维复合纸及其电磁屏蔽性能研究[J].化工新型材料,2017(9):71-73.
[6]钱学仁,宋豪,王立娟.导电纸的开发与应用[J].纸和造纸,2006,25(4):37-40.
[7]钱学仁.聚合物包覆型导电纸研究概述[J].中华纸业,2010,31(23):58-61.
[8]江文萍,胡志军,沈莉.碳纤维纸表面涂布及屏蔽效能分析[J].纸和造纸,2011(3):23-26.
[9]陈影.电磁屏蔽涂布纸的研制[J].纸和造纸,2015,34(3):57-59.
[10]石淑兰,何福望.制浆造纸分析与检测[M].中国轻工业出版社,2003:171-229.
[11]张美云,钟林新,陈均志,等.碳纤维导电纸的性能及应用[J].中国造纸,2008,27(3):13-17.
[12]庞志鹏,孙晓刚,程晓圆,等.碳纳米管导电纸的制备及改性研究[J].功能材料,2015(7):7109-7117.
[13]姬鹤.柔性纳米纤维/金属纳米粒子复合膜的制备及电磁屏蔽性能的研究[D].吉林大学,2018.
[14]高海明,施立才,胡青云,等.原纸白度及颜料配比对涂布纸白度的影响[J].纸和造纸,2016,35(5):20-23.
[15]刘传杰,李玉梅.纸张表面光学特性的研究分析[J].今日印刷,2017(5):63-64.
[16]伍安国,张俊苗,戴晓云.用纤维加填的化学浆与机械浆配抄低定量高不透明度印刷纸[J].纸和造纸,2017(1):10-13.
[17]唐爱民,贾超锋,王鑫,等.热压工艺对对位芳纶纸强度性能的影响[J].造纸科学与技术,2010,22(2):41-43.
[18]杜召梅.超声波预处理改善速生杨化学机械浆性能的研究[J].轻工科技,2016(6):29-32.
[19]汤龙其,张国亮,王士华,等.低电阻率聚吡咯-碳纤维纸基复合材料的制备[J].精细化工,2019,39(2):1-7.