CAJ | 학술논문

用应力控制流变仪考察了合成温度和分散时间对SiO 2/PEG分散体系流变性能的影响，实验结果表明，随着合成温度的升高，分散体系的表观粘度增大，剪切增稠行为显著；随着分散时间的延长，分散体系的表观粘度减小，剪切增稠行为不明显。进一步探讨了工艺参数影响SiO 2/PEG分散体系流变性能的机理，研究表明，合成温度和分散时间主要是通过改变分散体系中气相成分的量而产生影响，体系中气相成分越多，其粘度越大，剪切增稠的特性也更加明显。
용응력공제류변의고찰료합성온도화분산시간대SiO 2/PEG분산체계류변성능적영향，실험결과표명，수착합성온도적승고，분산체계적표관점도증대，전절증주행위현저；수착분산시간적연장，분산체계적표관점도감소，전절증주행위불명현。진일보탐토료공예삼수영향SiO 2/PEG분산체계류변성능적궤리，연구표명，합성온도화분산시간주요시통과개변분산체계중기상성분적량이산생영향，체계중기상성분월다，기점도월대，전절증주적특성야경가명현。
In this paper,the influence of synthesis temperature and dispersion time on the rheological properties of silica dispersions was studied with a stress controlled rheometer.The results show that as the synthesis tem-perature increases,the systems shows more obvious shear thickening and higher apparent viscosity,mean-while,over dispersion time the systems shows less obvious shear thickening and smaller apparent viscosity,the mechanism about the effect of the synthesis temperature and dispersion time on the rheological properties of sili-ca dispersions was explored by future study,and the study shows that synthesis temperature and the dispersion time can change the content of the gas phase,which has some influence on the rheological properties of the dis-persions,the properties of shear thickening improvemed and the apparent viscosity increased as the gas phase in the system increased.