胶体黏度和纤维化工艺条件对80多晶氧化铝纤维性能的影响  

Influence of colloidal viscosity and fiberization process conditions on properties of 80 polycrystalline alumina fiber

作　　者：傅顺德[1] 徐建峰[1] 刘丽彬[1] 贾佳[1] 甘小明[1] 

机构地区：[1]中钢集团洛阳耐火材料研究院有限公司河南省特种耐火材料重点实验室,河南洛阳471039

出　　处：《耐火材料》2010年第2期116-118,122,共4页Refractories

摘　　要：采用溶胶-凝胶法制备80多晶氧化铝纤维。以结晶氯化铝、铝粉和硅溶胶为主要原料制备出黏度分别为8、14、20、26和32Pa.s的甩丝胶体;采用甩丝法进行纤维化试验,控制甩丝盘转速分别为4000、5000、6000、7000和8000r.min-1;热风温度分别为60、70、80、90和100℃;并将甩丝后的纤维坯体于1250℃烧成,检测其平均直径和平均单丝拉伸强度。结果表明:在胶体黏度为20Pa.s、甩丝盘转速为6000r.min-1、热风温度为80℃时,纤维的平均直径为3.8μm,平均单丝拉伸强度超过1000MPa,是一种性能较优异的氧化铝纤维。80 polycrystalline alumina fiber was prepared by sol-gel method：use crystal aluminum chloride,aluminum powder and silica sol as starting materials to prepare spinning colloid with viscosity of 8,14,20,26 and 32 Pa·s,respectively,carry out the fiberization test using spinning method with rotating speed of 4 000,5 000,6 000,7 000 and 8 000 r·min-1 and wind temperature at 60,70,80,90 and 100 ℃,respectively;then fire the formed green fibers at 1 250 ℃.The average diameter and average tensile strength of monofilament were determined.The results show that：a kind of excellent alumina fiber with 3.8 μm of average diameter and over 1 000 MPa of tensile strength of monofilament is prepared under conditions of 20 Pa·s of colloidal viscosity,6 000 r·min-1 of rotating speed and 80 ℃ of wind temperature.

关 键 词：氧化铝晶体纤维 甩丝 黏度 纤维化工艺条件 

分 类 号：TQ342.7[化学工程—化纤工业]