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用四种不同粒径的、全稳定的ZrO2粉料进行了燃料电池电解质厚膜的流延实验.结果表明,流延成膜的最佳料浆组成随粉料粒径有很大变化,随着粉料粒径的减少;所需要的分散剂用量相应增加,同时;所需要的粘结剂与塑性剂用量也必须增加,以确保素坯膜有足够的强度与韧性.此外,料浆粘度对成膜的影响也很大,在所研究的料浆系统中,为了得到好的素坯膜,适中的料浆粘度应控制在400~600mpas(剪切速率为350s-1)范围以内.
The casting experiment of fuel cell electrolyte thick film was carried out with four kinds of ZrO 2 powders with different particle sizes and stability. The results showed that the optimum composition of the slurry casting film with the powder particle size has a great change, with the reduction of powder particle size; the amount of dispersant required a corresponding increase in the same time; the required binder and The amount of plasticizer must also be increased to ensure adequate strength and toughness. In addition, the viscosity of the slurry has a great influence on the film formation. In order to obtain a good blank film, the proper viscosity of the slurry should be controlled at 400-600mpas (shear rate of 350s-1 ) Within the range.