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Nitrogen-abundant compounds are generally regarded as perfect precursors toward in situ synthesis of nitrogen-doped carbon materials. In this study, we demonstrate a facile one-pot procedure to synthesize polyaniline-coated melamine fiber (PANI@MF) as the precursor, in which melamine fiber (MF) acts as both scaffold and nitrogen source. After high-temperature pyrolysis, wrinkled nitrogen-doped carbon...
Natural bioinspired hierarchically ordered architectures from the nanoscale to the macroscale are achieved in graphene/ZrB2 hybrid composites to improve their toughness using graphene oxide. Two types of films containing different volumes of graphene oxide are self-assembled with ZrB2 or SiC micro particles through a vacuum-assisted filtration method. Scanning electron microscopy images show that...
Carbon-bonded carbon fiber (CBCF) composites consist of chopped carbon fibers network by vitreous carbon at the intersections with high porosity, low thermal conductivity and high-temperature resistance. To further enhance mechanical properties of CBCF composites, nanostructured modification can inspire the creation of CBCF composites with tunable mechanical properties. Here, we report an self-grown...
Hierarchical structure consisting of graphene oxide (GO) grafted onto carbon fiber (CF) has been synthesized to improve the interfacial properties between the CFs and polymer matrix. The modified CFs are coated with siliconborocarbonitride (SiBCN) preceramic polymer by in situ polymerization to enhance their antioxidant and ablation properties. X-ray photoelectron spectroscopy were used to monitor...
Carbon-bonded carbon fiber composites were produced by a simple pressure filtration technique. This method consists of dispersing carbon fibers and phenolic resin to make a slurry and then pressing the water out through a filter cloth, and finally carbonizing the composites at 1000°C in nitrogen. A homogeneous microstructure without agglomeration and layering was achieved. The compressive strength...
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