Studies on the Properties of Epoxy Resins Modified with Novel Liquid Crystalline Polyurethane
Liquid crystal polyurethane (LCPBI) containing biphenylnate and imide units was synthesized and characterized and used to modify the conventional epoxy resin (E-51). Experimental results revealed that the impact strength of the epoxy resin modified with LCPBI was 2.5 times higher than that of unmodified epoxy resin, and the tensile strength as well as the bending strength was also improved. The thermal decomposition temperature of modified systems was also 15-20oC higher than that of the unmodified system, and the fracture structures of the blends was investigated by SEM.
Jinglong Bu, Zhengyi Jiang and Sihai Jiao
Z. Y. Huang et al., "Studies on the Properties of Epoxy Resins Modified with Novel Liquid Crystalline Polyurethane", Advanced Materials Research, Vols. 150-151, pp. 727-731, 2011