Ablation properties of aluminum silicate ceramic fibers and calcium carbonate filled silicone rubber composites

摘要: The ablative performance of aluminum silicate ceramic fiber (ASF) and calcium carbonate (CaCO3) filled silicone rubber composites prepared through a two-roll mill was examined. properties the were investigated by thermogravimetry, thermal conductivity measurements, oxyacetylene torch testing. After material burnt, structure composition char analyzed Fourier transform infrared spectroscopy, X-ray diffraction, scanning electron microscopy (SEM). results ablation test showed that resistance improved greatly in an appropriate filler scope. Combined with SEM, it proven firm, dense, insulation layer, which formed on surface during test, critical factor determining properties. Thermogravimetric analysis revealed stability enhanced incorporation ASF CaCO3. measurements had very low ranging from 0.206 to 0.442 W m−1 K−1; this significantly prevented heat transferring into inner matrix at beginning burning process. proportion 20/40 phr (ASF/CaCO3) optimum for improving composites. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 41619.