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 3 347.16 m2 to 1 688.66 m2.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.
维普
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