纺织学报 ›› 2022, Vol. 43 ›› Issue (08): 107-112.doi: 10.13475/j.fzxb.20210803307

• 染整与化学品 • 上一篇    下一篇

涤纶基纳米铜/还原氧化石墨烯复合材料的制备及其电磁屏蔽性能

杨宏林1(), 项伟1, 董淑秀2   

  1. 1.浙江工业职业技术学院 鉴湖学院, 浙江 绍兴 312000
    2.中国印染行业协会, 北京 100020
  • 收稿日期:2021-08-03 修回日期:2022-01-14 出版日期:2022-08-15 发布日期:2022-08-24
  • 作者简介:杨宏林(1982—),男,副教授,硕士。主要研究方向为清洁染整技术和功能性助剂应用。E-mail: 47108809@qq.com。
  • 基金资助:
    浙江省清洁染整技术研究重点实验室基金项目(QJRZ1908);浙江省新苗人才计划项目(2022R454A005)

Preparation and electromagnetic shielding properties of polyester fabric based nano-copper/reduced graphene oxide composites

YANG Honglin1(), XIANG Wei1, DONG Shuxiu2   

  1. 1. Jianhu Institute, Zhejiang Industry Polytechnic College, Shaoxing, Zhejiang 312000, China
    2. China Dyeing and Printing Association, Beijing 100020, China
  • Received:2021-08-03 Revised:2022-01-14 Published:2022-08-15 Online:2022-08-24

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摘要：

为制备具有电磁屏蔽性能且质轻、柔软的复合材料,以涤纶织物为基材,采用浸轧法将纳米铜乳液和氧化石墨烯负载到织物中,并通过化学法还原氧化石墨烯,制备涤纶基纳米铜/还原氧化石墨烯复合材料。借助扫描电子显微镜、红外光谱仪、X射线衍射仪等对复合材料进行表征,分析了纳米铜乳液粒径、质量分数及氧化石墨烯质量分数对复合材料电磁屏蔽性能的影响。结果表明:在纳米铜乳液平均粒径为93.7 nm、质量分数为20％,氧化石墨烯质量分数为8％条件下制备的复合材料具有良好的电磁屏蔽性能,其最小反射损耗值为–38.06 dB;与普通涤纶织物相比,复合材料亲水性能提高,手感良好,断裂强力略有降低。

关键词: 纳米铜, 还原氧化石墨烯, 涤纶织物, 复合材料, 电磁屏蔽性能

Abstract:

In order to prepare lightweight and flexible materials with electromagnetic shielding properties, nano copper emulsion and graphene oxide were loaded on polyester fabrics by dip-padding, after which the graphene oxide was reduced by a chemical reduction method to achieve polyester fabrics loaded with nano-copper/reduced graphene oxide composite. The materials were characterized by scanning electron microscopy, Fourier transform infrared spectrometer and X-ray diffraction. The effects of particle size of nano-copper emulsion, mass fraction of nano copper emulsion and graphene oxide on electromagnetic shielding properties of the composite materials were studied. The results show that the composite materials have excellent electromagnetic shielding properties with a minimum reflection loss value of –38.06 dB, with the average particle size of nano copper emulsion being 93.7 nm and mass fraction 20％, and mass fraction of the graphene oxide 8％. Compared with untreated polyester fabric, the composite materials have better wettability and handle, but the breaking strength of composite materials reduced slightly.

Key words: nano-copper, reduced graphene oxide, polyester fabric, composite material, electromagnetic shielding property

中图分类号: 

  • TS195.2

图1

涤纶基纳米铜/还原氧化石墨烯复合材料制备过程示意图"

图2

涤纶织物和复合材料表面形态SEM照片(×2 000)"

表1

涤纶织物和复合材料X射线微区分析"

试样 不同元素含量/％
C O Cu
涤纶织物 56.0 44.0 —
涤纶基纳米铜复合材料 48.3 42.8 8.9
涤纶基纳米铜/还原氧
化石墨烯复合材料		 63.7 35.7 0.6

图3

涤纶织物和复合材料的红外光谱"

图4

涤纶织物和复合材料的 XRD谱图"

表2

纳米铜乳液粒径对涤纶基纳米铜复合材料电磁屏蔽性能的影响"

平均粒径/nm 25.4 93.7 237.8 514.6 1 408.6
最小反射损
耗值/dB		 –6.81 –11.22 –10.56 –5.89 –3.65

图5

纳米铜乳液TEM照片"

表3

纳米铜乳液质量分数对复合材料电磁屏蔽性能的影响"

纳米铜乳液质量分数/％ 最小反射损耗值/dB
0 –0.04
5 –4.47
10 –6.78
15 –8.56
20 –11.22
25 –11.65

表4

氧化石墨烯质量分数对复合材料电磁屏蔽性能的影响"

氧化石墨烯质量分数/％ 最小反射损耗值/dB
0 –11.22
2 –17.67
4 –22.34
6 –30.87
8 –38.06
10 –39.39

表5

不同频率下涤纶织物及复合材料的反射损耗值"

频率/MHz 反射损耗值/dB
涤纶织物 涤纶基纳米铜/还原
氧化石墨烯复合材料
0.300 2.87 –1.90
1.001 0.34 –38.06
30.990 –0.04 –1.10
522.157 0.35 –1.54
706.344 0.01 –2.86
982.625 0.05 –6.80
1 335.651 1.64 –2.72
1 995.655 0.01 –0.30
2 931.941 4.39 –0.11

表6

涤纶织物和复合材料的亲水性、Zeta电位、断裂强力及悬垂系数"

试样 亲水
性/s		 Zeta电
位/mV		 断裂强
力/N		 悬垂系
数/％
涤纶织物 >60 –69.8 463 56.38
涤纶基纳米铜/还原
氧化石墨烯复合材料		 4.55 –40.4 451 41.66
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