| 초록 |
Recently, melt blends of liquid crystal polymers (LCPs) and conventional thermoplastics have extensively investigated because their polymer composites exhibited high mechanical properties, good thermal stability and processability. Poly(butylene terephthalate) (PBT) is a semicrystalline polymer, and has been used as the structural materials in the automotive, electrical, and electronic industries due to its high mechanical strength and good processability. In this research, rheological, morphological, thermal, and mechanical properties of the blends based on main chain LCP (MCLCP) and PBT were investigated, and the predetermined compositions of their blends were 5/95, 90/10, 80/20, 50/50, and 30/70 in weight ratio, respectively. The physical properties of MCLCP/PBT molecular composites were analyzed by DSC, DMTA, TGA, XRD, ARES, SEM, and tensile testing, and the properties of those were affected by the blend composition and fibril formation. The MCLCP formed finely dispersed spherical domains in PBT matrix, and the size of their domains was increased with MCLCP content. Mechanical properties of MCLCP/PBT composites were improved by MCLCP reinforcing effect in PBT matrix with good dispersion. |
