壳聚糖盐酸盐改性锂辉石基地质聚合物阻燃涂料的制备及表征  

Preparation and characterization of chitosan hydrochloride modified spodumene-based geopolymer flame-retarding coatings

作　　者：刘小丽 Liu Xiaoli(Guangdong Polytechnic of Science and Technology,Guang-dong Zhuhai 519090,China)

机构地区：[1]广东科学技术职业学院建筑工程学院,广东珠海519090

出　　处：《消防科学与技术》2024年第10期1419-1423,1428,共6页Fire Science and Technology

基　　金：智能绿色建筑技术与海绵城市建设工程中心(K01057058)。

摘　　要：面向锂辉石尾矿堆放造成的环境污染和提高建材被动防火性能的需求,本研究基于化学改性技术,制备了壳聚糖盐酸盐改性锂辉石基地质聚合物Si-C-P阻燃涂料。锥形量热仪测试结果表明:适量的壳聚糖盐酸盐(质量分数0.8%)改性使复合涂层的阻燃性能指数(FRI)从1.00增加到3.52,总产烟量(TSP)由3347.16 m^(2)减少至1688.66 m^(2)。壳聚糖盐酸盐促使形成针状无定形碳,增加了残留物的比表面积,形成了更具弹性和强韧的Si-C-P复合材料残留物,增强了地质聚合物涂层的阻燃性。In view of the pollution caused by spodumene tailings stacking and improving passive fire resistance of building materi-als,this study prepared spodumene-based geopolymer Si-C-P flame-retarding coatings through chitosan hydrochloride modification technology.Cone calorimeter test results show that:Appropriate amount of chitosan hydrochloride(mass fraction of 0.8%)enhanced the flame retardant index(FRI)of the compos-ite coating increasing from 1.00 to 3.52,and the total smoke pro-duction(TSP)decreased from 3347.16 m^(2)to 1688.66 m^(2).The acicular amorphous carbon formed by chitosan hydrochloride in-creased the specific surface area of the residue.The more resilient and robust Si-C-P composite residues formed,improving the flame retardancy of the geopolymer coating.

关 键 词：锂辉石 阻燃 壳聚糖 地质聚合物 微结构 

分 类 号：X913.4[环境科学与工程—安全科学] TU541[建筑科学—建筑技术科学]