采用全废瓷粉代替传统陶瓷原料,利用瓜尔豆胶高分子多糖凝胶特性湿法浇注成型制备建筑陶瓷坯体,分析了瓜尔豆胶浓度、废瓷粉含量对陶瓷浆料稳定性和样品烧结性能的影响.结果表明:瓜尔豆胶可提高陶瓷浆料的稳定性,增大陶瓷浆料粘度,而聚羧酸分散剂起到较好的陶瓷浆料分散效果.通过控制陶瓷浆料的固含量影响坯体气孔分布,从而影响其烧结性能.经过对瓜尔豆胶浓度和固含量等进行优化,制备出坯体抗折强度为62.08 MPa、烧结收缩率为13.5％、吸水率为0.25％的瓷质建筑陶瓷样品.%Using the properties of guar gum polysaccharide,architectural ceramics were prepared by using waste porcelain powders to replace completely traditional ceramic materials through wet forming process.The influences of the concentration of guar gum and the dosage of waste porcelain powder on the stability of the ceramic slurry and the sintering properties of samples were studied.The results show that the stability of the ceramic slurry and the viscosity of slurries can be increased after adding guar gum.The dispersion effect of slurries can be improved by adding the polycarboxylic acid as a dispersion agent.The sintering properties were influenced by the pore size distribution of green bodies controlled by the solid content of ceramic slurries.The samples of architectural ceramics with the rupture strength of 62.08 Mpa,the sintering shrinkage of 13.5％ and the water absorption of 0.25％ were prepared after optimizing the concentration of guar gum and the solid content of slurries.
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