In:
Journal of Applied Polymer Science, Wiley, Vol. 138, No. 11 ( 2021-03-15)
Abstract:
High reliability and high‐performance electromagnetic interference (EMI) shielding polymeric composite was fabricated by introducing carbon nanotube films (CNT f ) into an epoxy (EP) matrix as mechanical and EMI shielding reinforcement simultaneously. According to the computed tomography (CT) detection recorded by a high‐speed camera, CNT f exhibited excellent mechanical behavior and good energy absorption. While being introduced into laminated EP composite, the CNT f enhanced both the mechanical performance and EMI shielding performance. The damage mechanism of CNT f /EP was studied by CT detection of the impact process, indicating that the CNT f absorbed the impact energy by improving the delamination resistance. Additionally, the multilayered CNT f can trap and attenuate the entered electromagnetic microwaves by repeated adsorption, reflection, and scattering in the composite, resulting in excellent EMI shielding performance. Consequently, the energy absorption and the total shielding effectiveness of the CNT f /EP reached to 4.58 × 10 −3 J and 52.31 dB, respectively. Therefore, we demonstrated that the CNT f was an ideal functional reinforcement for mechanically strong and high‐performance EMI shielding polymeric composites and the CNT f reinforced EP composite is promising in practical EMI‐shielding applications.
Type of Medium:
Online Resource
ISSN:
0021-8995
,
1097-4628
Language:
English
Publisher:
Wiley
Publication Date:
2021
detail.hit.zdb_id:
1491105-X
