Study of Bio-Based Charcoal-Forming Agent Modified Ammonium Polyphosphate Flame Retardant for Enhancing the Fire Safety Performance of Epoxy Resin
A biomass-based charring agent was synthesized and applied to the modification of ammonium polyphosphate(APP)flame retardant to enhance the fire safety performance of epoxy resin(EP).After the reaction of melamine(MA)and vanillin in different ratios to form a carbonized coating(MV),APP was coated to obtain the bio-based charcoal-forming agent modified APP flame retardant(MV@APP),which was added to EP.It was found that the flame retardant obtained from the 1∶2 mass ratio of MA to vanillin in the same flame retardant additive ratio(5%)was the most effective in EP(MV@APP/EP-2),with the peak heat release rate,total heat release and total smoke production reduced by 57.2%,66.4%and 62.7%,respectively.Thermal stability analysis shows that the addition of MV@APP improves the thermal stability as well as the amount of residual carbon.In addition,the compatibility between the flame retardant and EP was improved by the modification of APP by the organic charcoal-forming agent,and the flexural properties of EP were enhanced by the addition of the flame retardant.
万方数据
维普
