Enhanced thermal resistance of carbon/phenolic composites by addition of novel nano-g-C3N4
Source abstract
Abstract
Abstract Effects of a novel carbon/phenolic (CF/PR) ablator filled with acidified graphitic carbon nitride (ag-C3N4) on ablative resistance were evaluated. Ablative properties of CF/PR composites were significantly enhanced by 69.23% with incorporating 0.2 wt% ag-C3N4, ascribing to the formation of the dense carbon layer over the fibers, increased graphitization degree and more pyrolysis gases. Molecular dynamics simulations of ag-C3N4 inside the matrix confirm the origins of improved ablation resistance arising from the fact that ag-C3N4 alters the breaking patterns and spatial distribution of the polymer fragments, and reduces the graphitic growth temperature by 400 K. And the decomposition of ag-C3N4 and phenolic at the fiber-matrix interface collides the fibers' surfaces to undermine the structural integrity, which induces the phase transformation from short-range to long-range order of the matrix carbon because of the templating effect (transverse) and the interlayer π-π stacking (longitudinal) of the fibers at extremely high temperature.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Diamond and Carbon-based Materials Research · Advanced ceramic materials synthesis · Graphene research and applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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