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材料研究学报  2017, Vol. 31 Issue (8): 585-590    DOI: 10.11901/1005.3093.2016.547
  研究论文 本期目录 | 过刊浏览 |
芳纶纤维表面银金属化的性能
余帆, 滕翠青(), 秦明林, 刘百花, 张康, 倪加其, 余木火
东华大学材料学院 上海 201620
Performance of Silver-deposited Aramid Fibers
Fan YU, Cuiqing TENG(), Minglin QIN, Baihua LIU, Kang ZHANG, Jiaqi NI, Muhuo YU
College of Materials Science & Engineering, Donghua University, Shanghai 201620, China
引用本文:

余帆, 滕翠青, 秦明林, 刘百花, 张康, 倪加其, 余木火. 芳纶纤维表面银金属化的性能[J]. 材料研究学报, 2017, 31(8): 585-590.
Fan YU, Cuiqing TENG, Minglin QIN, Baihua LIU, Kang ZHANG, Jiaqi NI, Muhuo YU. Performance of Silver-deposited Aramid Fibers[J]. Chinese Journal of Materials Research, 2017, 31(8): 585-590.

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摘要: 

用NaOH粗化处理芳纶纤维,然后用化学镀方法实现了芳纶纤维表面Ag金属化。使用扫描电子显微镜(SEM)、原子力显微镜(AFM)和X射线光电子能谱仪(XPS)等手段对纤维的表面形貌和元素组成进行了表征,使用X射线衍射仪(XRD)分析了镀银前后纤维的晶体结构变化,使用纤维强伸度仪和热重分析仪(TG)测量了芳纶纤维在镀银前后的力学性能和热稳定性,用万用表测试了镀层的导电性能。结果表明:Ag金属层均匀致密地包裹在纤维的表面,结合牢固度较高。镀银使纤维的热稳定性有所提高,对力学性能的影响较小,电阻达到0.52 Ω/cm,在冷热水循环和盐水环境下银层的稳定性较好。

关键词 材料表面与界面芳纶纤维表面银金属化化学镀氢氧化钠    
Abstract

Silver nano-particles were deposited on the surface of aramid fibers by a two-step process i.e. firstly coarsening the surface of aramid fibers with sodium hydroxide and then Ag electroless plating. The Ag-plated aramid fibers were characterized by scanning electron microscope (SEM), atomic force microscope (AFM), X-ray photoelectron spectrometer (XPS) and X-ray diffractometer (XRD). The mechanical properties, thermal stability, and electrical resistance of the Ag-plated aramid fibers were examined by thermogravimetric analyzer (TG) and digital multimeter. The results show that the plated Ag is homogeneous and compact; The plating process had little impact on the mechanical properties of the aramid fiber, while the Ag-plating could enhance its thermal stability; The electrical resistivity is as low as 0.52 Ω/cm. And the Ag-layer exhibits good stability in hot- and cold-water cyclic test or in salt solution.

Key wordssurface and interface in the materials    Ag-plated aramid fiber    electroless plating    sodium hydroxide
收稿日期: 2016-09-18     
ZTFLH:  TB333  
基金资助:国家重点基础研究发展计划(2011CB606100)
作者简介:

作者简介 徐 帆,女,1992年生,硕士生

Materials Molecular formula Content Role
Silver nitrate AgNO3 0.15 mol/L silver salt
Sodium hydride NaOH 6 g/L pH adjuster
Ammonia NH3H2O right amount complexing agents
Glucose C6H12O6 0.15 mol/L reducers
Potassium sodium tartrate C4H4O6KNa6H2O 2.5 g/L complexing agent
Polyethylene glycol PEG2000 75 mg/L wetter
Ethanol C2H5OH 40 mL/L stabilizer
表1  化学镀银的镀液组成
图1  镀银前后芳纶纤维的SEM和AFM图
图2  镀银后芳纶纤维的XPS全谱和Ag 3d分谱
图3  镀银前后芳纶纤维的XRD谱
图4  芳纶原丝和镀银后芳纶纤维在N2气氛下的TG曲线
图5  芳纶纤维原丝以及粗化后、敏化后、活化后、镀银后的断裂强度和断裂伸长率
Test Ag-plated aramid fiber Thermal cycling treatment 10%NaCl (mass fraction) 10%NaOH (mass fraction) 10%HCl (mass fraction)
Resistance/Ωcm-1 0.52 0.65 0.63 1.03 24.06
CV/% 4.92 4.81 7.36 5.01 2.37
表2  镀银后纤维及镀银后不同条件处理下芳纶纤维的电阻值
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