将粒径分别为1.5和25μm的堇青石粉体按一定比例球磨混匀,添加适当的粘结剂和造孔剂,经捏合、陈腐、挤出成型及烘坯处理后,程序升温至一定温度烧结2h制备膜支撑体.结果表明,细粉含量20%(质量分数)、1400℃烧结所得的支撑体综合性能较好:钝水通量为10.3m3/(m2·h);爆破压力为2.21MPa.其浸渍于5%(质量分数)NaOH中、置于100℃烘箱36h后,爆破压力仍为1.85MPa,表明其还具有良好的耐碱性能,适合碱性条件下的工业应用.
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