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- Title
Carbon nanotubes in near-infrared laser irradiation for locally controllable surface foaming of polypropylene.
- Authors
Zhang, Zhijun; Xie, Zhixiang; Hu, Zhong; Cheng, Junfeng
- Abstract
In recent years, foam materials have attracted people's attention in many fields. This study reveals the one-step preparation of polypropylene (PP) foam material with very low carbon nanotubes (CNTs) content via laser irradiation technology. A low-energy near-infrared (1064 nm) laser beam is used to scan the laser-sensitive PP/CNTs composite prepared in the air. The controllable instantaneous thermal energy generated by laser irradiation decomposes CNTs and PP, and forms a foaming layer in situ on the surface of the composite material. CNTs content, laser power and laser scanning rate are key parameters for controlling laser-induced foaming. The results show that the rich carbonized structure induced by the laser envelops the gas generated by thermal degradation to form a porous structure, and form a 3D white pattern with the naked eye. This study can provide a positive reference for directly writing 3D foamed structures on the surface of composite materials on a large scale through a simple and efficient one-step laser irradiation method.
- Subjects
POLYPROPYLENE; GAS lasers; LASERS; COMPOSITE materials; CARBON nanotubes; IRRADIATION
- Publication
Bulletin of Materials Science, 2022, Vol 45, Issue 4, p1
- ISSN
0250-4707
- Publication type
Article
- DOI
10.1007/s12034-022-02747-9