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| | Preheating is used to increase the dimension of ceramics powder, lower the specific surface energy and improve the phenomenon of aggregation. The alumina black porcelain slurries containing 55% solid volume were obtained by using the preheating technique. The effects of the amount of dispersant, solid volume fraction and the R ratio on the rheological behaviors of the slurries were studied. The results indicate that rheological behaviors of alumina black porcelain slurries appear shearing thinning and the o... | | 通过对氧化铝黑瓷粉料进行预烧技术处理,增大颗粒尺寸、降低粉体比表面能、改善其团聚现象,制备出固相体积分数达55%的氧化铝黑瓷稳定料浆,并研究了分散剂用量、体系固相体积分数、R值(塑性剂/粘结剂)对料浆流变性的影响。研究结果表明:浆料的粘度随剪切速率增加而下降,呈剪切稀化的流变学特性,随着固相体积分数的增加,浆料的最佳分散剂用量也相应增加;浆料的粘度随着R值的增加而急剧减小,流变性能得到明显改善。 | | 文摘来源 | | In this paper,Preheating is used to increase the dimension of alumina black porcelain powder,lower the specific surface energy and improve the rheological behavior of slurry,which is favor to obtain a low viscosity of ceramics suspensions with high solid content.The results indicate that the optimum preheating temperature is 900℃ for the dimension and specific surface energy of ceramics powder,and it is clear that the rheological behaviors of alumina black porcelain slurries are improved obviously and solid... | | 通过对氧化铝黑瓷粉料进行预烧处理,增大颗粒尺寸,降低比表面能,改善浆料的流变性能,制备出高固相量、低粘度的氧化铝黑瓷稳定浆料。研究结果表明:随着预烧温度的升高,粉料比表面积减小,预烧使粉料活性略有下降,综合考虑900℃是较合适的预烧温度。预烧处理明显改善了浆料的流变性能,由900℃预烧处理的粉料可制备出55vol%高固相体积分数的浆料。 | | 文摘来源 | | Preheating is used to increase the dimension of ceramics powder,lower the specific surface energy and improve the phenomenon of aggregation.The alumina black porcelain slurries containing 55% solid volume were obtained by using the preheating technique.The effects of the amount of dispersant,solid volume fraction and the R ratio on the rheological behaviors of the slurries were studied.The results indicate that rheological behavior of alumina black porcelain slurries appear shearing thinning and the optimum... | | 通过对氧化铝黑瓷粉料进行预烧技术处理,增大颗粒尺寸、降低粉体比表面能、改善其团聚现象,制备出固相体积分数达55%的氧化铝黑瓷稳定料浆,并研究了分散剂用量、体系固相体积分数、R值(塑性剂/粘结剂)对料浆流变性的影响。结果表明:浆料的粘度随剪切速率增加而下降,呈剪切稀化的流变学特性,随着固相体积分数的增加,浆料的最佳分散剂用量也相应增加;浆料的粘度随着R值的增加而急剧降低,流变性能得到明显改善。 | | 文摘来源 | |   | | << 更多相关文摘 |
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