Issue 30, 2015

Cost-effective, low density, carbon soot doped resorcinol formaldehyde composite for ablative applications

Abstract

Successful in situ polymerization of highly ablation-resistant composites of resorcinol formaldehyde (RF) modified with carbon soot (CS) was carried out for the first time. The composites exhibited a comparatively high char yield, up to 59.7% at 800 °C, and while undergoing ablation by an oxyacetylene flame displayed exceptionally low linear and mass ablation rates of 0.019 mm s−1 and 0.053 g s−1, respectively. Microstructure analysis of a surface ablated for 60 s revealed a uniform pattern of closely knit carbon nanobead-like structure which ensured enhanced ablation resistance. The formation of turbostratic carbon guaranteed a significantly improved thermal insulation property of the ablative composite at a higher temperature. An XRD graph showed peaks at 24° and 44°, corresponding to carbon nanobeads and insulating turbostratic carbon. The ability of RF to replace conventional phenol formaldehyde (PF) resin was confirmed. A CS/RF ablative composite during ablation also displayed reduced erosive losses and hence can be potentially used as a backbone material of a thermal protection system required for ablative applications.

Graphical abstract: Cost-effective, low density, carbon soot doped resorcinol formaldehyde composite for ablative applications

Article information

Article type
Paper
Submitted
30 Jan 2015
Accepted
17 Feb 2015
First published
03 Mar 2015

RSC Adv., 2015,5, 23622-23634

Cost-effective, low density, carbon soot doped resorcinol formaldehyde composite for ablative applications

Y. Badhe, B. K and R. Gupta, RSC Adv., 2015, 5, 23622 DOI: 10.1039/C5RA01839K

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