Effect of Epoxy Resin Content on Properties of Porous Coal Series Kaolin Ceramics Prepared by Selective Laser Sintering

Abstract

Abstract: At present, the low level of kaolin resources deep processing technology in China leads to the resources waste and environmental pollution. In this paper, epoxy resin and coal series kaolin powder were used as the binder and raw materials, respectively, and porous coal series kaolin ceramics were prepared by selective laser sintering (SLS). The effect of epoxy resin content on the properties of porous coal series kaolin ceramics were investigated. The results show that the main phases of porous coal series kaolin ceramicswith evenly distributed pores are mullite and cristobalite. With a increase of epoxy resin mass content from 10% to 25%, it is found that the bending strength of porous coal series kaolin ceramic green parts increases continuously from 0.17 MPa to 0.32 MPa, the bending strength of porous coal series kaolin ceramics decreases from 2.81 MPa to 0.82 MPa, and the porosity increases from 50.37% to 59.69%. The preparation of porous ceramics from coal series kaolin by SLS is of great significance to the development and utilization of coal series kaolin resources.

Key words: selective laser sintering, coal series kaolin, porous ceramics, microscopic morphology, mechanical property

CLC Number:

TB321

HE Yining, DAI Gaoshang, WU Jiamin, ZHANG Jie, PAN Mingzhu, CHEN Jingyan, CHEN Ying, WANG Yongjun, ZHANG Hongxing. Effect of Epoxy Resin Content on Properties of Porous Coal Series Kaolin Ceramics Prepared by Selective Laser Sintering[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2021, 40(6): 1950-1956.

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