建筑陶瓷复合分散剂的制备与性能研究

在建筑陶瓷工业生产中,坯体的强度、可塑性是直接影响产品的成品率及质量的重要指标。在自制聚合物分散剂PYAS的基础上,加入三聚磷酸钠（STPP）、六偏磷酸钠（SHMP）进行复配,可以研究开发出分散效果更好的,且具有增强、增塑作用的复合分散剂。实验结果表明,当PYAS、STPP、SHMP的比例为25%﹕35%﹕40%,复合分散剂总掺量为0.5%~0.6%时,陶瓷坯体的抗折性能最佳;结合电镜分析发现：浆料中大部分陶土颗粒尺寸在10μm以下,表面光滑,无粘接的片状颗粒,证明复合分散剂分散效果良好。

Preparation and Properties of Compsite Dispersant in Building Ceramic

In the industrial production of architectural ceramics, the strength and plasticity of ceramic body are important indexes which influence the yield and the quality of the products directly. Based on the own product of polymer dispersant named PYAS, two inorganic of ceram- ic dispersants, sodium tripolyphosphate（STPP） and six partial sodium phosphate（SHMP）, were added to prepare the compound dispersant with strengthening and plasticizing effect. The compound dispersant had better dispersion effect. The results show that under the primal condition： m （PYAS）： m （STPP）： m （SHMP） = 25%： 35%： 40% and the composite dispersion agent dosage was 0.5%-0.6%, the flexural strength of ceramic body were the best. SEM analysis showed that the average size of particle was under 10μm and the surface of the particle was smooth.