POS3-0780
Simultaneous Resin Impregnation and CNT Network Formation via VANCI Process for Nanoconfined Epoxy-CFRP with Superior Thermal Stability
When and Where
Nov 30, -0001
12:00am - 12:00am
Presenter(s)
Yuha Jang (Pusan National University)
Co-Author(s)
Abstract
Carbon fiber reinforced polymers (CFRPs) are increasingly adopted as replacements for metallic components in various applications, valued for their high specific strength, stiffness, and low density. However, the thermal performance of CFRPs is primarily governed by the polymer matrix, which undergoes significant stiffness reduction near its glass transition temperature (Tg) due to increased segmental chain mobility. Incorporating carbon nanotube (CNT) networks into the matrix has been demonstrated to suppress this mobility through a nanoconfinement effect, thereby raising Tg. However, achieving uniform CNT network formation concurrent with resin impregnation remains a significant processing challenge, particularly for high-viscosity resin systems. To address this, the vacuum-assisted nano-network co-infiltration (VANCI) process was developed to enable concurrent resin infiltration and CNT network formation. In the present work, VANCI was adapted for an epoxy-based CFRP system using a surfactant-assisted aqueous CNT dispersion. Impregnation quality was evaluated against that of CFRP fabricated by conventional compression molding. The effect of the embedded CNT nano-network on Tg enhancement via nanoconfinement was further characterized, confirming the applicability of the VANCI process as a versatile fabrication method for thermally stable epoxy-based CFRPs.
