为了解决SiO2纳米微孔隔热板成本较高的问题，将硅灰与高铝纤维按高铝纤维占二者总质量的0、5％、10％和15％的配比配料，以酚醛树脂为结合剂，分别加入占硅灰和高铝纤维总质量0和0．5％的遮光剂氧化锌制成试样，检测试样的高温体积稳定性和热导率（平板法），并利用多功能模拟设备研究不同厚度试样的隔热性能。结果表明：1）随着高铝纤维加入量的增加，试样的线收缩率减小，但热导率变化不大；2）加入氧化锌遮光剂能显著降低试样的热导率；3）高铝纤维质量分数为15％（w）的含氧化锌遮光剂的试样，在1000℃模拟试验2 h后其冷面温度几乎不再升高，厚度最薄（2 cm）的试样的冷面温度也未超过180℃。
The specimens were prepared with high alumina fiber accounting for 0,5%,10%or 15%in mass of the total amount of amorphous silica and high alumina fiber,using phenolic resin as binder,and extra-adding 0 or 0.5% ZnO as sunscreen to cut the cost of SiO2 nanoporous insulation board.The hot volume stability and thermal conductivity (flat plate method)of the specimens were tested and multi-function simu-lation equipment was used to study the thermal insulation performance.The results show that:1)with high alumina fiber addition increasing,the linear shrinkage rate decreases,but thermal conductivity changes a lit-tle;2)adding ZnO can decrease thermal conductivity obviously;3)for the specimen with ZnO and 15% of high alumina fiber,its cold face temperature hardly rises during the simulation experiment at 1 000℃for 2 h, and the cold face temperature of the specimen with the smallest thickness of 2 cm doesn’t exceed 180 ℃.
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