TY - JOUR
T1 - Flexible Ag/BaFe12O19 microfiber/polyimide composite film with high electromagnetic interference shielding and low reflection
AU - Zou, Kangkang
AU - Li, Nan
AU - Pan, Xinghai
AU - Shi, Junfeng
AU - Pu, Junhong
AU - Yan, Ding Xiang
AU - Wang, Haolun
N1 - Publisher Copyright:
© 2023, Science China Press.
PY - 2023/12
Y1 - 2023/12
N2 - Advanced electromagnetic interference (EMI) shielding materials with high EMI shielding efficiency (SE) and low reflection have significant potential for reducing the secondary electromagnetic radiation contamination. In this study, a gradient-conductive Ag/BaFe12O19 microfiber/polyimide (GCABP) composite film with exceptional EMI SE is fabricated by blow spinning. The gradient-conductive structure effectively minimizes electromagnetic wave reflection. The incorporation of BaFe12O19 microfiber further enhances the EMI SE of the film. At a thickness of 100 µm, the EMI SE of the composite film can reach 98.9 dB with an absorption coefficient of 0.75, confirming the GCABP film as an absorbing EMI shielding material. The polyimide safeguards the Ag microfiber and BaFe12O19 microfiber, ensuring the stability of the GCABP film in extreme environments. Additionally, the GCABP film exhibits exceptional thermal management performance, such as achieving a high surface temperature of 315°C at a low supply voltage of 1.4 V, rapid response time of 5.4 s, reliable cyclic heating stability, and good overall reliability. Given its outstanding comprehensive properties, the GCABP film holds significant potential for diverse applications in the national defense industry and aerospace sector.[Figure not available: see fulltext.].
AB - Advanced electromagnetic interference (EMI) shielding materials with high EMI shielding efficiency (SE) and low reflection have significant potential for reducing the secondary electromagnetic radiation contamination. In this study, a gradient-conductive Ag/BaFe12O19 microfiber/polyimide (GCABP) composite film with exceptional EMI SE is fabricated by blow spinning. The gradient-conductive structure effectively minimizes electromagnetic wave reflection. The incorporation of BaFe12O19 microfiber further enhances the EMI SE of the film. At a thickness of 100 µm, the EMI SE of the composite film can reach 98.9 dB with an absorption coefficient of 0.75, confirming the GCABP film as an absorbing EMI shielding material. The polyimide safeguards the Ag microfiber and BaFe12O19 microfiber, ensuring the stability of the GCABP film in extreme environments. Additionally, the GCABP film exhibits exceptional thermal management performance, such as achieving a high surface temperature of 315°C at a low supply voltage of 1.4 V, rapid response time of 5.4 s, reliable cyclic heating stability, and good overall reliability. Given its outstanding comprehensive properties, the GCABP film holds significant potential for diverse applications in the national defense industry and aerospace sector.[Figure not available: see fulltext.].
KW - flexible microfiber film
KW - gradient-conductive
KW - high EMI shielding
KW - low reflection
UR - http://www.scopus.com/inward/record.url?scp=85178878793&partnerID=8YFLogxK
U2 - 10.1007/s40843-023-2650-8
DO - 10.1007/s40843-023-2650-8
M3 - Journal article
AN - SCOPUS:85178878793
SN - 2095-8226
VL - 66
SP - 4825
EP - 4833
JO - Science China Materials
JF - Science China Materials
IS - 12
ER -