FIRE PROTECTION PROPERTIES OF WOOD IN WATERBORNE EPOXY COATINGS CONTAINING FUNCTIONALIZED GRAPHENE OXIDE. (3rd September 2019)

• Record Type: Journal Article
• Authors: Chen, Xuexi; Li, Junfei; Gao, Ming; Yue, Lina; Zhou, Xuan
• Is Part Of: Journal of wood chemistry and technology. Volume 39:Number 5(2019)
• Page Start: 313
• Page End: 328
• Publication Date: 2019-09-03
• Subjects: Graphene oxide -- intumescent flame retardant coating -- waterborne epoxy resin -- TG; Wood -- Chemistry -- Periodicals; Wood; Wood -- Chemistry; Periodicals; 674.13
• DOI: 10.1080/02773813.2019.1601740
• Languages: English
• ISSNs: 0277-3813

Abstract

Abstract : Functionalized graphene oxide (FGO) modified by H3 BO3 and (C2 H5 O)3 –Si–(CH2 )3 NH2 was prepared and applied as an intumescent flame retardant (IFR) coating to reduce thermal transmission to a substrate and enhance fire resistance. Its structural features were tested using Fourier transform infrared (FTIR) spectroscopy, transmission electron microscopy (TEM), X-ray diffraction (XRD), and energy-dispersive X-ray spectrometry (EDS). The IFR coating presented here is based on melamine pyrophosphate (MPP), pentaerythritol (PER), and melamine-formaldehyde resin (MF), with waterborne epoxy resin (WEP) used as an adhesive. The flame retardancy of the coatings was tested on a small scale using the "big panel method" and cone calorimeter test (CCT). The coatings structure and thermostability were investigated using thermogravimetric analysis (TGA), and scanning electron microscopy (SEM), respectively. The results show that the addition of 0.083 phr FGO into the IFR system provided effective fire protection. The SEM results show that the char residues have better morphology, height, and structure, making them useful as a protective shield. Significantly, the IFR coating containing 0.05 g of FGO has proved effective in protecting plywood from fire.