Journal
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
Volume 131, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesa.2020.105769
Keywords
Electroconductive composite; Electromagnetic interference; Carbon fiber; High temperature resistance; Ceramic
Funding
- National Natural Science Foundation of China [51827803, 51721091, 51790504]
- Program for Sichuan Province Youth Science and Technology Innovation Team [2017TD0006]
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It is greatly important to shield the X-band electromagnetic radiation and meanwhile possess a high temperature resistant performance for the outer sealing materials of hypervelocity air aircrafts. In this work, novel cer-amifiable electro-conductive polymer composites were prepared by incorporating glass powder (GP), mica powder (MP), organo-modified montmorillonite (OMMT), and short carbon fiber (SCF) into ethylene-vinyl acetate (EVA). The prepared EVA/GP/MP/OMMT/SCF displayed excellent electromagnetic interference (EMI) shielding performance before and after treating at 1000 degrees C and also had a high temperature resistant feature via the ceramization. For the EVA/GP/MP/OMMT/SCF composite with a weight ratio of 35/23/17/5/20, its EMI shielding effectiveness (SE) reached 36.0 dB at 2.6 mm thickness, and its ceramic formed at 1000 degrees C possessed about 30.0 dB of EMI SE. Moreover, the formed ceramic did not show any change during a vertical burning test. Mechanism for the high SE before and after high temperatures were revealed.
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