广州化学2024，Vol.49Issue(2)：12-15,4.DOI:10.16560/j.cnki.gzhx.20240213
硼酸锌对腐植酸基膨胀型防火涂层阻燃性能的影响
Effect of Zinc Borate on Flame Retardancy of Humic Acid-based Intumescent Fire Retardant Coatings
李同兵 1邵文龙 2肖飞2
作者信息
- 1. 广东安拓普聚合物科技有限公司,广东 东莞 523125
- 2. 武汉理工大学 安全科学与应急管理学院,湖北 武汉 430070
- 折叠
摘要
Abstract
Biomass humic acid(HA),ammonium polyphosphate(APP),melamine(MEL)and zinc borate(ZB)were used to prepare intumescent coatings via melt-mixing,and then applied to the surface of steel structure for fire protection.The thermal stabilities of intumescent coatings were determined by thermogravimetric analysis(TGA),and the fire-retardancy were characterized and analyzed by cone calorimeter.The results showed that the coating(C4)with 2%ZB replacing the intumescent component of APP-MEL-HA exhibited the best fire performance.The peak heat release rate(PHRR)and total heat release(THR)were 53.2 kW/m2 and 22.7 MJ/m2,respectively,showing a reduction of 86%and 61%as compared to the control coating(C1).The mechanism of action was revealed according to the analysis of SEM and Raman results of char residue after cone calorimeter test.The combination of APP,MEL,HA and ZB promoted the formation of a continuous and dense graphitized expanded char layer on the surface of the steel plate,effectively preventing the heat and mass transfer,thereby improving the performance of the intumescent coating.关键词
生物质/腐殖酸/膨胀阻燃/硼酸锌/防火涂层Key words
biomass/humic acid/intumescent flame retardant/zinc borate/fire protection coating分类
化学化工引用本文复制引用
李同兵,邵文龙,肖飞..硼酸锌对腐植酸基膨胀型防火涂层阻燃性能的影响[J].广州化学,2024,49(2):12-15,4.
