Abstract
Ethylenediamine modified Ammonium polyphosphate (EDA-MAPP), and Charring-Foaming Agents (CFA) was prepared via a simple chemical approach and further utilizes for the preparation of Epoxy resin based intumescent flame retardation coatings. The ratio belongs to MAPP and CFA was fixed at 2:1 ratio. Comparative thermo gravimetric analysis TGA study of Modified Ammonium polyphosphate (MAPP) and Ammonium polyphosphate (APP) investigated. Sb2O3 was introduced into flame retardation coating formulation at various amounts to evaluate the synergistic action of Sb2O3 along with flame retardant coating system. The synergistic action of Sb2O3 on flame retardation coating formulation was studied by vertical burning test (UL-94V), thermo gravimetric analysis (TGA), Limited Oxygen Index (LOI), and Fourier Transform Infra-Red spectroscopy (FTIR). The UL-94V results indicated that adding Sb2O3 effectively increased flame retardancy and meets V-0 ratings at each concentration. The TGA results revealed that the amalgamation of Sb2O3 at each concentration effectively increased the thermal stability of the flame retardant coating system. Cone-calorimeter study results that Sb2O3 successfully minimized the combustion parameters like, Peak Heat Release Rate (PHRR), and Total Heat Release (THR). The FTIR result shows that Sb2O3 can react with MAPP and generates the dense-charred layer which prevents the transfer of heat and oxygen.
Highlights
Wood has been using as primary structural raw material due to its valuable properties, such as complexion, low mass, high strength, and low-level insulation properties
Due to its high flammability, the application of wood is limited in some fields for the purpose of safety [1,2,3]
Flammability of polymers is a big challenge in implement and expands their uses; scientists have established many approaches to overcome with this problem, like as flame retardant filler technology, fire retardant coating technology, fire retardant solution soaking and chemical grafting flame retardant
Summary
Wood has been using as primary structural raw material due to its valuable properties, such as complexion, low mass, high strength, and low-level insulation properties. Polymer-fabricated materials are recognized a days as the major engineering material that involve in aerospace, automobile, shipbuilding, construction, and many other multiple fields are linked with people’s routine lives. Such materials show strength and low weight ratio along with decent stability in terms of physical and chemical behavior, their resistance capacity in terms of corrosion, heat, chemical, etc. The char can be formed by cross-link and cyclization reaction of flame retardant molecules [13] This charred layer slows down the shifting of oxygen and heat in between substrate and its surroundings [14]
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