The Study Of Modified Y₂O₃ Reinforced Rubber Material

In this dissertation, Rare earth oxide (REO) reinforced rubber with goodproperties was prepared by means of mill-mixing in solid state, with NR and BRused as substrate and modified REO as the reinforce agent.It had been found that the Y₂O₃ content and coupling agents content havestrongly influence on rubber properties. Besides, the reaction mechanismbetween Y₂O₃ and coupling agent had been explained.Further investigation on the mechanical performances of rubber had beenmade. The results indicated that, the tensile strength property was optimal whilerubber filled with 10wt%¹5wt% Y₂O₃ which modified by 3wt% couplingagents. The wear resistance of the rubber was improved obviously, nearly morethan twice when 10wt% modified Y₂O₃ was filled. Worn Surfaces was examinedby SEM. Wear mechanisms of REO reinforced rubber could be concluding as:abrasive wear along with roll wear and thermo-chemical degradation wear.Filled with 10wt% modified Y₂O₃ into the rubber is advantageous toimprove the stress relax properties of the rubber. And qualitative analysisindicated that, creep properties improved as well as stress relax rate decreasing.The parallel connection Maxwell model was used to give reasonable explainsfor this problem.Y₂O₃ accelerated crystallization capacity and confined the rubber chainmovement, so the anti-corrosion property in oil and machine oil was improved.While in different liquate the Y₂O₃ showed different.