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外墙保温材料燃烧等级的提高,引起***空调风管保温材料的讨论,是否有必要把难燃B1级提高到不燃,有没有合适***空调风管的防火保温材料,从以下几方面进行分析。
难燃B1级保温板不会延燃
目前市场上采用保温材料的***复合空调风管有:
一、玻镁复合板风管,采用难燃B1级聚泡沫板保温,泡沫板两边复合玻璃纤维增强氯氧镁水泥。
二、聚氨酯铝箔复合风管,采用难燃B1级聚氨酯泡沫板保温,泡沫板两边复合铝箔。
三、酚醛铝箔复合风管,采用难燃B1级酚醛泡沫板保温,泡沫板两边复合铝箔。
四、彩钢板保温复合风管,采用难燃B1级聚、聚氨酯或酚醛泡沫板,泡沫板两边复合彩钢板。