中文摘要：

以蓝晶石、粘土、氧化镁粉为原料,以淀粉为造孔剂和固化剂,引入适量的硅酸铝陶瓷纤维或多晶莫来石纤维和Al F3,通过莫来石晶须在陶瓷纤维表面的原位形成,制备了具有陶瓷纤维/莫来石晶须互锁结构的堇青石-莫来石轻质隔热材料。研究了陶瓷纤维在Al F3的作用下对材料显微结构观察、常温力学性能和导热系数的影响。研究表明：在Al F3的作用下,莫来石晶须在硅酸铝纤维表面垂直生长,部分穿插在发育良好的堇青石晶粒中;这种具有陶瓷纤维/莫来石晶须互锁结构的的陶瓷材料,其力学性能得以提高并降低了材料的导热系数。

英文摘要：

Cordierite-mullite lightweight thermal insulation materials were prepared by the starch consolidation molding process, using kyanite, clay, magnesium oxide as raw materials, starch as pore forming agent and curing agent, and addition of the suitable amount of ceramic fibers and A1F3. Cordierite-mullite lightweight thermal insulation materials have ceramic fiber/mullite whisker interlocking structure and mullite whiskers in situ formatted on the surface of ceramic fibers. The effects of introducing aluminum silicate fiber under the action of A1F3 on microstructure, mechanical properties at room temperature and thermal conductivity of the synthesized eordierite-mullite lightweight thermal insulation materials were investigated. The results show that ： under the action of A1F3 mullite whisker in the vertical growth of the surface of the aluminum silicon fiber, part interspersed with well-developed cordierite grains; cordierite-mullite lightweight thermal insulation materials with fiber/mullite whisker interlocking structure had good mechanical properties and the minimum thermal conductivity.