Ultra-Low Density Fibreboard with Improved Fire Retardance and Thermal Stability using a Novel Fire-Resistant Adhesive
Lili Cai,
Biaorong Zhuang,
Daobang Huang,
Wei Wang,
Min Niu,
Yongqun Xie,
Tingjie Chen,
Xiaodong (Alice) Wang
Affiliations
Lili Cai
Department of Material Science and Engineering, Fujian Agriculture and Forestry University, 350002, Fuzhou, Fujian, China; China
Biaorong Zhuang
Department of Material Science and Engineering, Fujian Agriculture and Forestry University, 350002, Fuzhou, Fujian, China; China
Daobang Huang
Department of Material Science and Engineering, Fujian Agriculture and Forestry University, 350002, Fuzhou, Fujian, China; China
Wei Wang
Department of Material Science and Engineering, Fujian Agriculture and Forestry University, 350002, Fuzhou, Fujian, China; China
Min Niu
Department of Material Science and Engineering, Fujian Agriculture and Forestry University, 350002, Fuzhou, Fujian, China; China
Yongqun Xie
Department of Material Science and Engineering, Fujian Agriculture and Forestry University, 350002, Fuzhou, Fujian, China; China
Tingjie Chen
Department of Material Science and Engineering, Fujian Agriculture and Forestry University, 350002, Fuzhou, Fujian, China; Division of Wood Technology and Engineering, Luleå University of Technology, SE-93187, Forskargatan 1, Skellefteå, Sweden; China
Xiaodong (Alice) Wang
Division of Wood Technology and Engineering, Luleå University of Technology, SE-93187, Forskargatan 1, Skellefteå, Sweden; Sweden
A novel fire-resistant adhesive made from polyvinyl alcohol, urea, phosphoric acid, and starch was demonstrated for use as a binder and fire retardant to produce ultra-low density fibreboard (ULDF) with clear environmental benefits. The results from Fourier transform infrared spectroscopy showed the presence of chemical bonding between fire-resistant adhesives and ULDFs. The limiting oxygen index (LOI), combustion behaviour, and thermal stability were characterized using a LOI text, cone calorimeter, and thermal analyzer, respectively. The results demonstrated that the LOI value of the fire-retardant ULDF can reach up to 34.2 with 300 mL of fire-resistant adhesive. It was established that the additive noticeably reduced the peak of heat release rate, total heat release, and total smoke release of ULDF. Their morphologies after combustion were elucidated using a scanning electron microscope, and a char layer in the condensed phase was observed. Thermal analysis showed that the thermal stability of ULDF improved dramatically and the residual weight increased 4-fold, to 48.32%. Therefore, such ULDFs will be tremendously attractive as renewable, sustainable, and bio-based insulating materials.
