The Development of Epoxy Foam Resin Grinding Wheel

摘要

In this study, grafting modification silicon carbide powders were manufactured successfully by KH-550 and acrylamide monomer in nitrogen atmosphere, and the modified silicon carbide epoxy foam resin grinding wheels were prepared by mixing epoxy resin with silicon carbides. The structure of the modified silicon carbide was characterized by using scanning electron microscopy (SEM) and laser particle size distribution analyzer. The cross section morphology of the resin grinding wheels with different types of blowing agents were observed by optical microscope. Besides, the mechanical properties, life-span and grinding performance of resin grinding wheel were systematically analyzed and studied with different dosage of blowing agent. The results were shown that mechanical properties were related to greatly the blowing agent content. The life-span and grinding performance both initially increased with blowing agent, but begin to decrease after exceeding a certain value. Their maximum values were obtained when 8-wt% OBSH blowing agent, the life-span is 89h, the grinding ratio is 70.20 and abrasion rate is 0.00025.