摘要
本研究以经过3-甲基丙烯酰氧基丙基三甲氧基硅烷(MPS)改性的纳米结晶纤维素(NCC)为造孔剂制备多孔陶瓷,并测定了该多孔陶瓷的孔隙结构、孔径分布、显气孔率以及抗压强度。结果表明:(1)以改性NCC为造孔剂可以制备出孔隙结构分布均匀的多孔陶瓷;(2)当改性NCC的用量低于10.0wt.%时,多孔陶瓷的孔径主要稳定在0.8-4μm之间,造孔剂含量的升高会导致孔径轻微增大;(3)多孔陶瓷的显气孔率受NCC用量影响显著,但在NCC用量达到10.0wt.%以后增加速率逐渐减慢;(4)抗压强度则会受到多孔陶瓷内部孔隙结构分布和尺寸的综合影响。
In this study, nanocrystalline cellulose (NCC) modified by 3-glycidoxypropyltrimethoxysilane (MPS) was used as the poreformingagent for the porous ceramics. The pore structure, pore diameter distribution, apparent porosity and linear shrinking percentage ofthe porous ceramics were determined. The results showed that the modified NCC used as the pore-forming agent resulted in the uniform porestructure of the porous ceramics. The pore diameters are mainly between 0.8 and 4 μm when the concentration of the modified-NCC was lessthan 10.0wt.%. And the increase of the content of the pore-forming agent leads to the slight enlargement of the pore diameters. The apparentporosity of the porous ceramics is influenced by the content of the modified NCC significantly, while the increase of the apparent porosity isunconspicuous when the content of NCC is more than 10.0wt.%. The compressive strength of the porous ceramics is affected by the dispersestate and size of the pore structure.
作者
张浩
王娜
邓倩
李姝汶
仝瑞芳
ZHANG Hao;WANG Na;DENG Qian;LI Shuwen;TONG Ruifang(Henan Institute of Engineering, College of Materials and Chemical Engineering, Zhengzhou 450000, Henan, China)
出处
《陶瓷学报》
CAS
北大核心
2016年第3期265-270,共6页
Journal of Ceramics
基金
河南省高等学校重点科研项目(15A430019)
关键词
多孔陶瓷
孔隙结构
孔径分布
显气孔率
抗压强度
porous ceramics
pore structure
pore diameter distribution
apparent porosity
compressive strength
