Mechanical, thermal, and ablative properties between graphene oxide and graphitic carbon nitride based carbon/phenolic composites: a comparative study

Abstract

In this article, we investigated the interfacial, thermal and ablative properties of two nanofillers‐filled carbon/phenolic (CF/PR) composites. In particular, graphene oxide (GO) and graphitic carbon nitride (g‐C3N4) were used to produce lowly loaded (0.1 wt%) composites. The ablative properties of the composites were researched through an oxygen–acetylene flame torch test and were characterized through analysis of the post‐burning morphology, ablation depth and width. GO‐ and g‐C3N4‐filled composites showed 62.02 and 22.36% improvement in ablation resistance compared with the pristine, respectively, even with different mechanisms. The proposed mechanism of GO‐filled composite is that GO may significantly contribute to increasing the graphitization of the fiber surface and further improving the thermal resistance to high‐temperature ablation. However, thicker fiber diameter and charred layer of ablative zone in g‐C3N4‐filled composite can dissipate the flammable gases and improve the anti‐oxidation. POLYM. COMPOS., 39:E1928–E1938, 2018. © 2018 Society of Plastics Engineers

Improved Performances of SiBCN Powders Modified Phenolic Resins-Carbon Fiber Composites

“…A decrease in the ILSS strength of SiBCN-phenolic/C composites can be attributed to that the effective interfacial area and fiber-resin adhesion between resins and fibers were reduced. Therefore, the load transfer capacity of the matrix decreases, which can result in lower ILSS properties [33]. As shown in Figure 13b, bending strengths of SiBCN-phenolic/C composites were higher than that of phenolic/C composites.…”

Effect of ceramic nano‐particles on the properties of a carbon‐phenolic ablator

“…[24] This characterization test is specifically designed to determine the relative thermal insulation effectiveness of the different ablators. [25] The facility used for performing this test was designed and engineered by the Laboratory of Materials and Surface Engineering of Sapienza University of Rome. The same facility was used for previous works [8,10,11,26] but it was gradually improved to obtain more and more accurate results.…”

Intumescent flame retardancy and smoke suppression of Eucommia ulmoides gum/natural rubber blends based on synergistic g-C3N4@Fe3O4 nanocomposites

“…22 However, g-C 3 N 4 is far from achieving satisfactory results when it is applied alone as a ame retardant. 23,24 Fortunately, owing to the huge specic surface area of g-C 3 N 4 , 25 the introduction of metal nanoparticles into the layered structure of g-C 3 N 4 can not only exert the blocking effect of g-C 3 N 4 but also catalyze the formation of a stable cross-linked char layer effectively, thus preventing the release of smoke and further pyrolysis of polymers. 26 In this study, we presented the preparation of the g-C 3 N 4 @Fe 3 O 4 nanocomposites by in situ co-precipitation and introduced it as a ame retardant synergist together with an IFR into the EUG/NR blend system, aiming to improve its ame retardancy.…”

“…22 However, g-C 3 N 4 is far from achieving satisfactory results when it is applied alone as a flame retardant. 23,24 Fortunately, owing to the huge specific surface area of g-C 3 N 4 , 25 the introduction of metal nanoparticles into the layered structure of g-C 3 N 4 can not only exert the blocking effect of g-C 3 N 4 but also catalyze the formation of a stable cross-linked char layer effectively, thus preventing the release of smoke and further pyrolysis of polymers. 26…”