Fabrication of a highly-efficient phosphorus-silicon-containing transparent coating to improve fire safety of poly(methyl methacrylate). (August 2022)

• Record Type: Journal Article
• Authors: Zhang, Kang; Wang, Yan; Xiao, Yuling; Zheng, Yapeng; Lu, Jingyi; Ma, Chao; Hu, Yuan
• Is Part Of: Composites. Volume 159(2022)
• Publication Date: 2022-08
• Subjects: Polymer-matrix composites (PMCs) -- Flame retardancy -- Optical properties; PMMA Poly (methyl methacrylate) -- PHP Phosphorus/nitrogen-containing hyperbranched polyphenylphosphate -- ICPTMOS 3-Isocyanatopropyltrimethoxysilane -- NMR Nuclear magnetic resonance -- FTIR Fourier transform infrared spectroscopy -- GPC Gel permeation chromatography -- TGA Thermogravimetric analysis -- TGIR Thermogravimetric analysis/infrared spectrometry -- SEM Scanning electron microscopy -- XPS X-Ray photoelectron spectroscopy -- THEIC Tris (2-hydroxyethyl) isocyanurate -- PDCP Phenyl dichlorophosphate -- TEA Trimethylamine -- DBTDL Dibutyltin dilaurate -- DMF N, N-dimethylformamide -- HRR Heat release rate -- THR Total heat release -- SPR Smoke production rate -- TSP Total smoke production -- TTI Time to ignition -- PHRR Peak heat release rate -- PSPR Peak smoke production rate -- COY CO yield -- Av-EHC Average effective heat of combustion -- CY Char yield -- FPI Fire potential index -- FGI Fire growth index; Composite materials -- Periodicals; Manufacturing processes -- Periodicals; Composite materials; Manufacturing processes; Periodicals; 620.11805
• DOI: 10.1016/j.compositesa.2022.107004
• Languages: English
• ISSNs: 1359-835X

Abstract

Abstract: A novel phosphorus/nitrogen-containing hyperbranched polyphenylphosphate (PHP) was synthesized and it was used with 3-isocyanatopropyltrimethoxysilane (ICPTMOS) to prepare transparent and flame retardant coating for poly(methyl methacrylate) (PMMA). The content of PHP and ICPTMOS was changed to investigate the influence of silicon content on the performance of PMMA coating complexes. All coated PMMA samples are highly transparent and the pencil hardness of coatings increases with the increment of silicon content. The cone calorimeter test results indicate that the relatively low silicon content in PMMA coatings is conducive to the simultaneous reduction of heat release and smoke production. Moreover, the coatings can effectively protect the PMMA matrix in fire and with only 3.2% PHP replaced by ICPTMOS (0.08 g) in coating formulation, the fire resistance time of corresponding coated PMMA sample is extended to 1500 s. This work provides a highly-efficient strategy to concurrently improve fire safety, transparency and hardness of coating.