Abstract
In this work, a simple and efficient method to fabricate carbon foams from bisphenol A cyanate ester (CE) was developed. Pyrolysis behavior of the CE resin was investigated by thermogravimetric analysis (TGA), Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM). Results show that the carbon foam with an average pore size of 200μm can be directly prepared by pyrolysis of the resin at ambient pressure. The resin has self-foaming characteristics at high temperatures, and its development of pore structures is mainly in the temperature range of 400–600̊C. The resultant carbon foam possesses a compressive strength of 3.15MPa at a bulk density of 0.26g/cm3, which is due to its well-developed pore structures without obvious cracks or voids.
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