摘要
为了探究芳纶基镀银电磁屏蔽织物的制备工艺及其性能,采用复合镀工艺对芳纶1414进行化学镀银,制备一种芳纶基镀银电磁屏蔽织物。根据芳纶的理化特性,对织物进行表面处理,研究了在不同工艺阶段银盐和稳定剂的质量浓度对镀液稳定性、反应活性及镀样增重率的影响,对纤维表面形貌、结晶结构、电磁屏蔽效能等进行表征和测试。结果表明:前处理粗化工艺试样减重率控制在2%~3%,初镀银盐质量浓度为5 g/L,复镀银盐质量浓度为8 g/L,硫代硫酸钠作镀银稳定剂的质量浓度为初镀0.4 mg/L、复镀0.7 mg/L时,镀样增重率可达到87%以上;镀层致密均匀,镀样手感柔软,织物纹路清晰;在2 GHz~18 GHz频率范围内屏蔽效能在54 dB~67 dB。认为:该研究的施镀工艺稳定可靠,所制备的芳纶基镀银电磁屏蔽织物具有良好的电磁屏蔽效能。
In order to explore preparation processing of aramid based silver plated electromagnetic shielding fabric and its property,composite plating process was adopted for chemical silver plating of aramid 1414.An aramid based silver plated electromagnetic shielding fabric was prepared.Based on the physical and chemical property of aramid,the surface treatment of the fabric was carried out.The effects of the mass concentration of silver salt and stabilizer at different process stages on the stability,reaction activity and sample weight gain of the plating solution were studied.The surface morphology,crystalline structure,electromagnetic shielding effectiveness,etc.of the fiber were evaluated and tested.The results showed that the weight reduction rate of the pre-treatment roughening process sample was controlled between 2%and 3%,with initial silver salt dosage of 5 g/L and re-silver salt dosage of 8 g/L.When the amount of sodium thiosulfate as silver plating stabilizer was 0.4 mg/L in the initial plating stage and 0.7 mg/L in the re-plating stage,respectively,the weight gain rate of the plating sample could be reached above 87%.The coating was dense and uniform,the sample felt soft,and the fabric texture was clear.The shielding efficiency was 54 dB~67 dB in the frequency range of 2 GHz to 18 GHz.It is considered that the plating process is stable and reliable.The prepared aramid based silver plated electromagnetic shielding fabric has excellent electromagnetic shielding effectiveness.
作者
牛淑璘
郑茜璞
李朝龙
付中平
刘玉
杨明璇
郭森茂
NIU Shulin;ZHENG Xipu;LI Chaolong;FU Zhongping;LIU Yu;YANG Mingxuan;GUO Senmao(Hebei Textile Science Research Institute Co.,Ltd.,Shijiazhuang,050031,China;Chinese Academy of Sciences Chongqing Green Intelligent Technology Research Institute,Chongqing,400700,China)
出处
《棉纺织技术》
CAS
北大核心
2023年第12期34-39,共6页
Cotton Textile Technology
基金
石家庄市重点研发计划项目(211190181A)。
关键词
芳纶织物
化学镀银
复镀工艺
电磁屏蔽效能
表面处理
aramid fabric
chemical silver plating
composite plating process
electromagnetic shielding effectiveness
surface modification
