TY - GEN
T1 - INFLUENCE OF PYROLYSIS RAMP RATE ON CHAR YIELD FOR DIFUNCTIONAL FURAN BASED BENZOXAZINE
AU - Chauby, Michael J.
AU - Palmese, Giuseppe R.
N1 - Funding Information:
We would like to acknowledge financial support of the U.S. Army Research Laboratory through Cooperative Agreement W911NF-19-2-0152. The views and conclusions contained in this document are those of the authors and should not be interpreted as representing the official policies, either expressed or implied, of the U.S. Army Research Laboratory or the U.S. government. The U.S. Government is authorized to reproduce and distribute reprints for Government purposes notwithstanding any copyright notation herein.
Publisher Copyright:
Copyright 2022. Used by the Society of the Advancement of Material and Process Engineering with permission.
PY - 2022
Y1 - 2022
N2 - Polybenzoxazines are novel phenolic polymers that have found application as the precursor matrix in carbon-carbon composites due to their high char yield. A furan-based difunctional benzoxazine was selected for this study due to its high theoretical char yield of 74 %. The furan-based difunctional benzoxazine was synthesized using bisphenol A, furfurylamine and paraformaldehyde. Temperature ramp rate during carbonization was investigated to determine its influence on char yield and carbon microstructure. A maximum char yield of 54.8 % was observed for pyrolysis ramp rate of 1 °C min-1. The char yield decreased 6 % between ramp rates of 1 and 20 °C min-1. The carbon microstructure was investigated using scanning electron microscopy (SEM). As pyrolysis ramp rate increases, an increase in the microporosity can be seen. The results show that slower ramp rates increase char yield and decrease microporosity for a furan-based difunctional benzoxazine.
AB - Polybenzoxazines are novel phenolic polymers that have found application as the precursor matrix in carbon-carbon composites due to their high char yield. A furan-based difunctional benzoxazine was selected for this study due to its high theoretical char yield of 74 %. The furan-based difunctional benzoxazine was synthesized using bisphenol A, furfurylamine and paraformaldehyde. Temperature ramp rate during carbonization was investigated to determine its influence on char yield and carbon microstructure. A maximum char yield of 54.8 % was observed for pyrolysis ramp rate of 1 °C min-1. The char yield decreased 6 % between ramp rates of 1 and 20 °C min-1. The carbon microstructure was investigated using scanning electron microscopy (SEM). As pyrolysis ramp rate increases, an increase in the microporosity can be seen. The results show that slower ramp rates increase char yield and decrease microporosity for a furan-based difunctional benzoxazine.
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M3 - Conference contribution
AN - SCOPUS:85136280525
T3 - International SAMPE Technical Conference
BT - SAMPE 2022 Conference and Exhibition
PB - Soc. for the Advancement of Material and Process Engineering
T2 - SAMPE 2022 Conference and Exhibition
Y2 - 23 May 2022 through 26 May 2022
ER -