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研究了SL型聚合(高分子)电解质分散剂对含石墨掺杂高岭土粉体的胶体稳定性影响.结果表明该分散剂能使碳易在水中溶解并使溶液粘度快速降低,同样在高岭土 水系统中也发现类似现象.通过粒度分布的分析,所测试的粉体均具有多峰行为,其有利于颗粒微观内力作用下的颗粒紧密堆积.因此基于低粘度与高固相含量的控制,可获得具有高密度的精细复合坯体,其包括高岭土/石墨以及飞灰/石墨/高岭土.从悬浮体制备到素坯形成的一系列胶态成型工艺中,其重要因素主要包括混合粉体的组分配比、分散剂含量、各种粉体的粒度分布以及固相质量分数等,它们对流变性、生态性与力学性能均产生直接地影响.
The effect of SL type polymeric electrolyte dispersant on the colloidal stability of graphite-doped kaolin powder was studied.The results show that the dispersant can make carbon easy to dissolve in water and rapidly reduce the solution viscosity, and also in kaolin water system Also found a similar phenomenon.According to the analysis of particle size distribution, the tested powders all have multimodal behavior, which is conducive to the close accumulation of particles under the effect of the micro-internal force of the particles.Therefore, based on the control of low viscosity and high solid content, Fine composite bodies with high density, including kaolin / graphite and fly ash / graphite / kaolin An important factor in a series of colloidal forming processes from the preparation of suspensions to the formation of blanks consists essentially of the composition of the mixed powder Ratio, dispersant content, particle size distribution of various powders and solid mass fraction, etc., they have a direct impact on the rheological, ecological and mechanical properties.