乙炔端基砜基Semi-IPN的性能和破坏形态

NEW SEMI-INTERPENETRATING POLYMER NETWORKS FROM ACETYLENE- TERMINATED SULFONE AND THERMOPLASTIC RESIN——THE PROPERTIES AND FRACTURE MORPHOLOGIES

制备了由热固性乙炔端基砜(ATS)低聚物与热塑性树脂聚砜(PSF)、酚酞型聚砜(PES-C)、酚酞型聚醚酮(PEK-C)组成的半互穿聚合物网络(Semi-IPN)。并对其熔融指数(MI)、热变形温度(HDT)、抗溶剂性、热稳定性、力学性能和破坏形态进行了研究。ATS能提高未固化共混物的MI和降低其HDT;固化后Semi-IPN具有与纯热塑性树脂相同的HDT,抗溶剂性能明显提高,热稳定性和力学性能与ATS含量有关。

A series of high performance semi-interpenetrating polymer networks (Semi-IPNs) have been synthesized from acetylene-terminated sulfone (ATS) and thermoplastic bisphenol A polysulfone (PSF) ,polyethersulfone with carbo group (PES-C),polyetherketone with carbo group(PEK-C). The melt index (MI), heat distorsion temperature (HDT), solvent resistance, thermal stability, mechanical properties and fracture morphologies were presented. The addition of ATS dramatically increases the melt index and decreases the heat distorsion temperature of thermoplastic resin. Semi-IPNs posses the same HDT as thermoplastic resin. Notable improvements in solvent resistance over the unmodified PSF,PEK-C and PES-C neat resin were realized. But the thermal stability and impact resistance of Semi-interpenetrating polymer networks were decreased as the ATS concentration increased.