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近年来,南京中环国际广场、北京央视新址附属文化中心、上海胶州路728号教师公寓楼等建筑相继发生建筑外墙保温材料火灾事故,公安部于2011年3月14日下发了“关于进一步明确民用建筑外保温材料消防监督管理有关要求的通知(公消[2011]65号)”中规定:民用建筑外保温材料采用燃烧性能为A级材料。对外墙保温材料燃烧性能提出了更高的要求。喷涂硬泡聚氨酯、挤塑板、聚苯板等传统常用的外墙保温材料使用受到限制。为了提高外墙保温板的防火性能,采用火山熔岩颗粒、玻化微珠等超轻骨料与水泥、胶凝剂、发泡剂等材料进行组合开发的新型保温板材在市场上悄然兴起,这些板材通常具有优良的防火性能、变形与墙体基本一致、具有良好的稳定性和抗老化性等优点,弥补了传统挤塑板、聚苯板等外墙保温材料燃烧性能低,弹性变形大的缺陷,同时,此类材料的容重(200kg/m3)较大、导热系数是挤塑板的2倍,导致板材厚度增加,与传统粘贴类外墙保温板材相比存在脆性大,固定过程中容易破损的现象,安装固定工艺有待进一步完善。
In recent years, Nanjing Central International Plaza, the new site of Beijing CCTV Cultural Center, No. 728 Jiaozhou Road, Shanghai teachers apartment buildings and other buildings have occurred in the building wall insulation fire accident, the Ministry of Public Security on March 14, 2011 issued a “ Further clarify the civil construction thermal insulation materials fire supervision and management of the relevant requirements of the notice (Gongxiao [2011] No. 65) ”provides: civil construction insulation materials used for the combustion performance of A-class materials. On the outer wall of the combustion properties put forward higher requirements. Spray hard foam polyurethane, extruded board, polystyrene board and other traditional wall insulation use limited. In order to improve the fire performance of the external wall insulation board, the use of volcanic lava particles, glass beads and other ultra-light aggregates and cement, gelling agents, foaming agent and other materials for the combination of the development of the new insulation plate quietly rising in the market, these Plate usually has excellent fire resistance, deformation and the wall is basically the same, with good stability and anti-aging and other advantages, to make up the traditional extruded board, polystyrene board and other exterior insulation materials, low combustion performance, elastic deformation Defects, and at the same time, the bulk density (200kg / m3) of such materials is large, and the thermal conductivity is twice that of the extruded board, resulting in the increase of the thickness of the board, which is brittle compared with the traditional sticking type external wall insulation board, Damaged phenomenon, the installation of fixed technology to be further improved.