| 초록 |
The thermotropic liquid crystal polymer (LCP) represents an anisotropic molten state above the melting point of the polymer. With various properties of LCPs such as high mechanical strength and excellent chemical as well as heat resistance, they are widely used in mechanical and electrical fields. The most widely used LCP based on p-hydroxybenzoic acid shows drawbacks of high temperature processing temperature due to its high melting point. In order to decrease the melting point of LCPs, introduction of non-linear monomers, aliphatic monomers and lateral substituents have been proposed. In this study, several compositions of p-hydroxybenzoic acid, resorcinol, 4,4’-biphenol and terephthalic acid were copolymerized to easily control melting point and to provide optimized mechanical properties. The synthesized LCPs were characterized using differential scanning calorimetry (DSC), melting point analyzer, thermogravimetric analysis (TGA) and wide angle x-ray scattering (WAXS). |
