Journal
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
Volume 177, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesa.2023.107918
Keywords
A. Carbon fibres; B. Interface/interphase; B. Strength; D. Mechanical testing
Ask authors/readers for more resources
This study reported a novel multi-scale surface modification strategy for carbon fiber (CFs) to enhance interfacial properties. By combining chemical oxidation treatment and in situ grafting of a high-strength polymer network, the interfacial bonding and mechanical strength of CFs were significantly improved. The strategy achieved high-efficiency mechanical enhancement and thermal conductivity improvement in polymer bonded explosives (PBX). The study has important implications for exploring novel surface modification and has the potential application in high-performance polymer composites.
Poor interfacial interaction and strength largely restrict the overall performance and practical application of carbon fibers (CFs) reinforced composites. The favorable interfacial properties were the key to realize superior mechanical properties in composites. Herein, we reported a novel multi-scale surface modification strategy of CFs to strengthen interfacial properties. Based on chemical oxidation treatment, the surface of CFs was further in situ grafted by a crosslinked high-strength polymer network consisting of aromatic diisocyanate, graphene oxide (GO) and polyethylenen glycol (PEG), which significantly improved the interfacial bonding and mechanical strength of interface layer itself. Benefitting from this multi-scale surface treatment, a high-efficiency mechanical enhancement of polymer bonded explosives (PBX) was achieved. With only 0.3 wt% fiber content, the maximum tensile and compressive strength PBX composites were both significantly improved, which were 63 % and 39 % higher than those of pure PBX, respectively. Meanwhile, the thermal conductivity was also enhanced, yielding a significant synergistic enhancement effect. The interface failure mechanism of the composite under stress was clarified by the fracture morphology characterization. This study sheds a light for exploring novel surface modification and has the potential application in in high performance polymer composites.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available