We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
UV‐Curable 3D‐Printable Microwave‐Absorbing Material with a Sword‐Sheath Structure Based on Multiwalled Carbon Nanotube/Polypyrrole Nanotube/Fe<sub>3</sub>O<sub>4</sub> Composites.
- Authors
Liu, Chuangji; Xu, Yingjie; Huang, Beiqing; Zhang, Wan; Zhao, Xingyu; Wang, Yuxin
- Abstract
Multiwalled carbon nanotube (MWCNT)/polypyrrole nanotube (PPyNT)/triiron tetraoxide (Fe3O4) composites with a sword‐sheath structure are added to a UV‐curable resin to form a unique highly microwave‐absorbing material with a low absorbent content. Specifically tailored for high‐precision stereolithography three‐dimensional (3D) printers, the low absorbent content ensures an efficient curing and molding of the photosensitive resin. The conducting polymer polypyrrole is coated on the MWCNTs via free‐radical polymerization, forming a sheath structure. The initiator of the free‐radical polymerization, FeCl3, is converted into Fe3O4 and loaded onto the sheath structure. This ternary composite material is uniformly dispersed in the photosensitive resin with interconnected sword‐sheath structures, ensuring a favorable dielectric loss performance even at a low absorbent content. Importantly, the material exhibits both dielectric loss and magnetic loss properties. Using a UV‐cured microwave‐absorbing material with an absorbent content of 0.5 wt%, an electromagnetic loss of −22.5 dB can be achieved with a thickness of 1 mm. This UV‐cured microwave‐absorbing material facilitates the high‐precision 3D printing of microwave structures with various intricate shapes, broadening the application scope of microwave‐absorbing materials.
- Subjects
ADDITION polymerization; MAGNETIC flux leakage; DIELECTRIC loss; THREE-dimensional printing; CONDUCTING polymers; POLYPYRROLE; NANOTUBES; CARBON nanotubes
- Publication
Advanced Engineering Materials, 2024, Vol 26, Issue 12, p1
- ISSN
1438-1656
- Publication type
Article
- DOI
10.1002/adem.202400059