CAJ | 학술논문

为制备性能优异的氧化铝-氧化锆纤维，获得相对稳定的氧化铝-氧化锆复合胶体至关重要。以氧氯化锆、醋酸锆、铝粉、盐酸为主要原料，聚乙烯醇作纺丝助剂，采用溶胶-凝胶法，制备氧化铝-氧化锆复合胶体，并用Zetasizer Nano Zs90纳米粒度分析仪、AR 1500EX流变仪等对其稳定性进行分析研究。结果表明：胶粒粒径集中分布在4nm～30nm，pH为3，且储能模量G'高于耗能模量G'，两个模量几乎都与震荡频率相互独立时，胶体才不太可能在陈化过程中发生沉降；当胶体温度在25～30℃、含水率在45.7%～48.3%、剪切速率大于5001/s时，胶体才能稳定的牵伸成纤。
위제비성능우이적양화려-양화고섬유，획득상대은정적양화려-양화고복합효체지관중요。이양록화고、작산고、려분、염산위주요원료，취을희순작방사조제，채용용효-응효법，제비양화려-양화고복합효체，병용Zetasizer Nano Zs90납미립도분석의、AR 1500EX류변의등대기은정성진행분석연구。결과표명：효립립경집중분포재4nm～30nm，pH위3，차저능모량G'고우모능모량G'，량개모량궤호도여진탕빈솔상호독립시，효체재불태가능재진화과정중발생침강；당효체온도재25～30℃、함수솔재45.7%～48.3%、전절속솔대우5001/s시，효체재능은정적견신성섬。
A metastable alumina-zirconia composite colloid is crucial for preparing the alumina-zirconia fiber with excellent performance. By taking the zirconium oxychloride, zirconium acetate, aluminum powder and hy-drochloric acid as the main raw materials, the polyvinyl alcohol as spinning finish aid, this paper prepares alumi-na-zirconia binary precursor colloid by using sol-gel method, researches and analyzes its stability with Zetasizer Nano Zs90 nano particle size analyzer, AR 1500EX rheometer and so on. The results show that when colloid with the rubber particle size of 4~30nm and a pH value of 3, the storage modulus G ' higher than the loss modulus G", and when both of them are independent from oscillation frequency, the colloid tends to be stable during aging pro-cess;When the temperature of colloid is 25~30 ℃,with the moisture content of 48.3~45.7% and the shear rate greater than 500 1/s, the colloid will be stable during fiber-forming process.