硼酸锌膨胀型防火涂料阻燃抑烟性能的研究  

Study on the Flame and Smoke Suppression Performance of Zinc Borate Intumescent Fire Retardant Coating

作　　者：宋晓卉[1] 扈中武[1] 谷晓昱[1] 王华进[2] 李志士[2] 张胜[1] 李洪飞[1] 

机构地区：[1]北京化工大学碳纤维及功能高分子教育部重点实验室,北京100029 [2]海洋化工研究院有限公司海洋涂料国家重点实验室,山东青岛266071

出　　处：《电镀与精饰》2014年第7期7-11,共5页Plating & Finishing

基　　金：国家重点基础研究发展计划(973计划;项目编号2012CB724600)

摘　　要：以纯丙乳液为基体,以聚磷酸铵、季戊四醇和三聚氰胺为膨胀阻燃体系,钛白粉为高温填料,硼酸锌为阻燃抑烟协效剂,制备了钢结构膨胀型防火涂料。通过大板燃烧法与热质量损失分析测试了其热性能,通过建材烟密度箱测试了其烟密度值,用数码照片和扫描电镜观察了炭层的宏观与微观结构。结果表明,硼酸锌的加入提高了钢结构防火涂料的抑烟性能和阻燃性能。当添加18.75份硼酸锌时,烟密度等级仅为10.3,耐燃t为126.3min。A fire-retardant coating was prepared with pure acrylic emulsion as binder and ammonium polyphosphate （ APP）, pentaerythritol （PER） and melamine （MEL） as flame-retardant system and zinc borate （ZB） as flame-retardant and smoke suppressant synergist. Fire performance was evaluated by big- panel method and thermo-gravimetric analysis （TGA）, and smoke density was analyzed by smoke density chamber. Digital photograph and scanning electron micro-scope （SEM） were used to investigate the macro-and micro- structure of carbon layer. Results showed that zinc borate adding could significantly improve smoke suppression performance of the fire-retardant coating, and also improved the flame retardancy. When zinc borate adding was 18.75 parts （parts per hundreds of resin）, the smoke density rating was only 10.3 and flame time was 126.3 min.

关 键 词：膨胀型防火涂料 硼酸锌 阻燃抑烟剂 烟密度 

分 类 号：TQ630.4[化学工程—精细化工]