CaCl2-induced interfacial deposition for the preparation of high-strength and flame-retardant plywood using geopolymer-based adhesive

Widely used formaldehyde-based resins for modern wood-based panels are toxic to humans and the environment. Geopolymer-based adhesives (GA) are abundant environmentally inorganic materials with wide applications in engineering fields. However, the modification and design of GA with excellent properties for practical applications remain a major challenge. Here, calcium chloride (CaCl2) solution was used to coat the wood surface, which quickly...