Study On The Properties And Rheological Behavior Of PE/CaO Composites

In this paper, the PE/CaO composites were prepared by blending PE and CaO modified withrare earth complexes. The effects of CaO contents,coupling agents and photoconductive agentson the mechanic property of PE/CaO composites were investigated. The degradability of PEfilms, which was under the high-pressured mercury lamp artificial accelerated aging and naturalinsolation exposes to the sun, was also investigated by FTIR, SEM. In chapter 3, The rheologicalbehaviors of the PE/CaO composites were investigated by Melt Flow Rate Instrument, HAAKERotational Viscometer and AR2000 Torque Rheometer. The thermal degradable dynamics ofPE/CaO composites was preliminary analysed. Finally, the mechanism of photodegradable ofPE/CaO composites was analysed by IR,SEM and AR2000 Torque Rheometer.The results showed that the mechanic property of PE/CaO composites can meet thestandard.The PE/CaO composites can be photodegradable, bumt and compostable.The analysisof TG showed that the apparent activation energy of PE was 224.0 kJ/mol, lower than theapparent activation energy of PE/CaO composites with 30% CaO content, close to the apparentactivation energy of other PE/CaO composites.The main chemical reaction of PE/CaOcomposites illuminated a long time was the degradable reaction of the chief chain.With theilluminated time prolonged, the viscoelastic response of PE/CaO composites transform fromquasi-liquid to quasi-solide.