ZHANG Hao, WANG Na, DENG Qian, LI Shuwen, TONG Ruifang
(Henan Institute of Engineering, College of Materials and Chemical Engineering, Zhengzhou 450000, Henan, China)

Abstract: In this study, nanocrystalline cellulose (NCC) modified by 3-glycidoxypropyltrimethoxysilane (MPS) was used as the poreforming agent for the porous ceramics. The pore structure, pore diameter distribution, apparent porosity and linear shrinking percentage of the porous ceramics were determined. The results showed that the modified NCC used as the pore-forming agent resulted in the uniform pore structure of the porous ceramics. The pore diameters are mainly between 0.8 and 4 μm when the concentration of the modified-NCC was less than 10.0wt.%. And the increase of the content of the pore-forming agent leads to the slight enlargement of the pore diameters. The apparent porosity of the porous ceramics is influenced by the content of the modified NCC significantly, while the increase of the apparent porosity is unconspicuous when the content of NCC is more than 10.0wt.%. The compressive strength of the porous ceramics is affected by the disperse state and size of the pore structure.

Key words: porous ceramics; pore structure; pore diameter distribution; apparent porosity; compressive strength