带雨淋水膜的非耐热防火玻璃的火灾试验

研究了水膜对防火玻璃耐热性质的影响。用标准试验炉对门窗玻璃做火灾试验，温度高达1000℃。结果表明，对玻璃施用水膜能有效地经受试验的高温，水膜的蒸发潜热被用于保护建筑物的玻璃，免于因火灾造成融熔或炸裂。并且保留其完整性和绝缘性的试验时间由6min延长到100min。值得注意的是，玻璃表面的温度维持在90℃以下可持续100min。结论：用带水膜的防火玻璃替代通常装设的门是可行的。

Fire test on a non-heat-resistant fireproof glass with down-flowing water film

The purpose of this study is to investigate the effects of a water film on the heat-resistant property associated with the insulation of a fireproof glass. The evaporative latent heat of water film could be used to protect the glass of the building from melting or breaking as a fire occurs. In the experiment, the glass panes were fire-tested up to 1 000 ℃ by using a standard testing furnace for doors and windows. Results showed that the application of the water film on the glass pane could effectively resist the intensive heat from the burning in the test;and that the test period with permitted integrity and insulation could be extended from 6 minutes to 100 minutes. It was noted that the temperature of the glass surface could be kept under 90 ℃ for a 100-minute-test. The substitution of the fireproof glass with water film for the overhead door has been proven workable.