This study fabricated low thermal conductive polyacrylonitrile (PAN)-based carbon fibers containing cellulose particles while maintaining their mechanical properties. The high thermal conductivity of carbon fibers limits their application as a high temperature insulator in various systems such as an insulator for propulsion parts in aerospace or missile systems. By controlling process parameters such as the heat treatment temperature of the cellulose particles and the amount of cellulose added, the thermal and mechanical properties of the PANbased carbon fibers were investigated. The results show that it is possible to manufacture composite carbon fibers with low thermal conductivity. That is, thermal conductivities were reduced by the cellulose particles in the PAN based carbon fibers while at the same time, the tensile strength loss was minimized, and the tensile modulus increased.

• Jee-Woo Yang(Department of Advanced Organic Materials and Textile System Engineering, Chungnam National University)
• Da Young Jin(Department of Advanced Organic Materials and Textile System Engineering, Chungnam National University)
• Ji Eun Lee(Department of Advanced Organic Materials and Textile System Engineering, Chungnam National University)
• Seung Goo Lee(Department of Advanced Organic Materials and Textile System Engineering, Chungnam National University) Corresponding Author
• Won Ho Park(Department of Advanced Organic Materials and Textile System Engineering, Chungnam National University) Corresponding Author