基于离子交联橡胶的电磁屏蔽复合材料的制备及其性能  

Preparation and performance of electromagnetic shielding composites based on ionic cross-linked rubber

作　　者：何选盟[1] 李蓓君 韦晗丹 邵亮[2] HE Xuan-meng;LI Bei-jun;WEI Han-dan;SHAO Liang(School of Material Science and Engineering,Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials,Shaanxi University of Science&Technology,Xi′an 710021,China;College of Chemistry and Chemical Engineering,Key Laboratory of Chemical Additives for China National Light Industry,Shaanxi University of Science&Technology,Xi′an 710021,China)

机构地区：[1]陕西科技大学材料科学与工程学院陕西省无机材料绿色制备与功能化重点实验室,陕西西安710021 [2]陕西科技大学化学与化工学院中国轻工业轻化工助剂重点实验室,陕西西安710021

出　　处：《陕西科技大学学报》2023年第3期85-92,共8页Journal of Shaanxi University of Science & Technology

基　　金：陕西省科技厅重点研发计划项目(2021GY-238);陕西省创新能力支撑计划项目(2021TD-15);陕西省咸阳市科技重大专项基金项目(2018k01-46);陕西科技大学轻化工助剂化学与技术教育部重点实验室开放基金项目(KFK72020-09)。

摘　　要：以四硫-丙烯酸锌(SZDA)和碳纳米管(CNTs)制备了离子交联碳纳米管/丁苯橡胶复合材料,采用溶液共混和机械共混法解决了碳纳米管在橡胶基体中因团聚而造成电导率降低的可能,获得了具有电磁屏蔽性和可回收性的双功能复合材料,加入20 wt%CNTs时材料的屏蔽效能达27.29 dB.还探究了厚度对屏蔽性能的影响,当厚度由1 mm增至3 mm时,10 wt%CNTs/SBR材料的屏蔽性能从21.01 dB增至33.42 dB.此外,通过溶剂回收法对交联橡胶进行回收,再以ZnO作为交联剂对回收橡胶重新加工,虽然再加工复合材料的屏蔽性能有所降低,但降低幅度不超过10 dB,仍具有良好电磁屏蔽性.In this paper,ionic cross-linked carbon nanotubes/butadiene rubber composites were prepared using tetrasulfide-zinc acrylate(SZDA)and carbon nanotubes(CNTs).The solution blending and mechanical blending methods were used to solve the potential reduction of conductivity due to agglomeration of carbon nanotubes in the rubber matrix,that to obtained bi-functional composites with electromagnetic shielding and recyclability.The shielding efficiency of the material reached 27.29 dB at 20 wt%CNTs/SBR.The effect of thickness on the shielding performance was also explored,when the thickness increased from 1 mm to 3 mm,the shielding effectiveness of 10 wt%CNTs/SBR increased from 21.01 dB to 33.42 dB.In addition,the shielding performance of the cross-linked rubber was reduced by solvent recycling and reprocessing of the recycled rubber with ZnO,the reduction was not more than 10 dB,which still had good electromagnetic shielding properties.

关 键 词：四硫-丙烯酸锌 离子交联 可再加工 电磁屏蔽 

分 类 号：TB333.2[一般工业技术—材料科学与工程]