J. Ma, X.-P. Lin, Zhenhua Xie, H. Miao, B. Zhang, Yi-Bing Cheng
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Gelcasting of alumina ceramic in mixed PVP–HEMA systems
Abstract Aqueous gelcasting with a low toxicity monomer system has attracted increasing attention. The present study attempts to enhance the flexural strength of green bodies gelcast from a low toxicity hydroxyethyl methacrylate (HEMA) system by introducing an appropriate amount of the water soluble polymer polyvinylpyrrolidone (PVP). The rheological properties and gelling characteristics of PVP–HEMA/Al2O3 suspensions were examined. In addition, the flexural strength and microstructure of the gelcast green and sintered bodies are discussed.
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