水性膨胀型钢结构防火涂料耐火性能研究  

Fire resistance property of waterborne intumescent fireproof coating for steel structure

作　　者：张凡[1] 赵东林[1] 张磊[2] 马晓娜[1] 

机构地区：[1]北京化工大学化工资源有效利用国家重点实验室,碳纤维及功能高分子教育部重点实验室,北京100029 [2]中国建筑科学研究院,北京100013

出　　处：《功能材料》2012年第19期2694-2697,共4页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(50672004);国家高技术研究发展计划(863计划)资助项目(2008AA03Z513)

摘　　要：以水性乳液为基体,聚磷酸铵(APP)、三聚氰胺(MEL)、季戊四醇(PER)为膨胀阻燃体系,通过添加可膨胀石墨(EG)和绢云母制备了水性膨胀型钢结构防火涂料;研究了基体拼合、膨胀阻燃体系配比、EG与绢云母配比对钢结构防火涂料性能的影响。结果表明,氯偏乳液与纯丙AC261P乳液质量比为22∶3,APP/MEL/PER的质量比为4∶3∶3,可膨胀石墨和绢云母的质量比为5∶3时,制备的防火涂料受热后形成的炭质层与钢板粘附性好、强度高,膨胀倍率大,持续耐火性能最好,受热4500s后钢板背面温度维持在223℃。An intumescent flame-retardant coating was prepared with binder, solvent and flame retardant system composed of ammonium polyphosphate （APP）, melamine （MEL） and pentaerythritol （PER）. The modifiers expandable graphite （EG） and sericite were used to improve the performances of the APP-PER-MEL coating. The effects of the compose of the binder; the ratio of the flame retardant system; the ratio of EG and serieite on the fire-retardant property and char formation of the coating were investigated by using self-made high tempera- ture furnace. The results showed that, when the binder composed of chloride latex and acrylic latex AC261P by the percentage of 22 ： 3; APP, MEL, PER conducted by the percentage of 4 ： 3 ： 3; the ratio of EG/serieite was 5 ： 3, the char layer with compact and well-distributed pores was formed, the char structure showed good adhesive properties and was tough enough to protect the steel structure. And the steel structure reached only 223℃ at 4500s.

关 键 词：防火涂料 可膨胀石墨 绢云母 

分 类 号：TQ637.8[化学工程—精细化工]