Constructing hydrophobic interfaces in aluminophosphate adhesives with reduced graphene oxide to improve the performance of wood-based boards. (1st October 2020)

• Record Type: Journal Article
• Authors: Chen, Tingjie; Wu, Zhenzeng; Hu, Xiaokang; Aladejana, John Tosin; Niu, Min; Liu, Zhiyong; Wei, Qihua; Peng, Xiangfang; Xie, Yongqun; Wu, Binghui
• Is Part Of: Composites. Number 198(2020)
• Publication Date: 2020-10-01
• Subjects: Environmental adhesive -- Graphene oxide -- Aluminophosphate -- Hydrophobic interface -- Mechanical properties; Composite materials -- Periodicals; Materials science -- Periodicals; Composite materials; Periodicals; Electronic journals; 620.118
• DOI: 10.1016/j.compositesb.2020.108168
• Languages: English
• ISSNs: 1359-8368

Abstract

Abstract: Due to the hydrophilic nature of the aluminophosphate (AP) adhesives, their application in the wood-based board (WBB) industries is rarely considered. Herein, the AP adhesives with reduced graphene oxide (AP@ r GO) were developed for the construction of hydrophobic surface, mainly for the improvement of the water resistance of AP-based WBB interface as well as their mechanical properties and fire resistance. Results indicated that there is an excellent interfacial adhesion between the AP@ r GO and fibers, making the APW@ r GO achieved a high dry bonding strength of 2.77 MPa. Utilizing the advantages of r GO network with outstanding water resistance, the WBB engineered the comparable wet bonding strength as high as 1.65 MPa, meeting the minimum requirement of the plywood standard stated in GB/T9846.3–2004. Also, AP@ r GO exhibited an excellent fire resistance properties and smoke suppression ability. Benefiting from these remarkable results, the AP@ r GO could be broadly developed for practical applications in related wood-based products. Highlights: The synthesis of AP adhesive is featured with simplicity and environment friendliness. A hydrophobic interface was constructed by using rGO nanosheets. The AP@GO could provide good interfacial adhesion by the covalent and hydrogen bond connections. The APW@GO possess favorable mechanical and fire-resistant performance.