Ding, Haohao published the artcileA phosphorus/sulfur-containing compound toward simultaneously endowing epoxy resin with good flame retardancy and high transparency, Computed Properties of 80-09-1, the publication is Journal of Applied Polymer Science (2022), 139(26), e52431, database is CAplus.
A phosphorus/sulfur-containing compound (sulfonylbis(3,1-phenylene) bis(diphenyl-phosphinate), named as SBPDPP) is designed and synthesized by nucleophilic substitution reaction between diphenylphosphinyl chloride and 4,4-dihydroxydiphenylsulfone, and its chem. structure is verified by Fourier transform IR, 1H and 31P NMR. The incorporation of SBPDPP accelerates the curing process but decreases the glass transition temperature and the crosslinking d. of the epoxy resin (EP). The cured EP with 6 wt% SBPDPP passes UL-94 V0 rating and gives limited oxygen index value of 38.8%, meanwhile maintaining 90% of the transmittance of the pure EP. Its peak heat release rate, total heat release, total smoke production, and total smoke rate are reduced by 40.8%, 42.0%, 26.3%, and 21.9% in comparison with the pure EP, demonstrating that the SBPDPP improved simultaneously the fire safety and smoke suppression. The comprehensive anal. of the char residues after cone calorimeter test and the volatile gasses during the pyrolysis demonstrates that the SBPDPP exerted dual flame retardant effect in the gas and condensed phase. The cured FREPs have promising applications that requiring flame retardancy and maintaining transparency.
Journal of Applied Polymer Science published new progress about 80-09-1. 80-09-1 belongs to alcohols-buliding-blocks, auxiliary class Ploymers, name is 4,4′-Sulfonyldiphenol, and the molecular formula is C12H10O4S, Computed Properties of 80-09-1.
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