In this section, you can access to the latest technical information related to the FUTURE project topic.

The preparation of starch derivatives reacted with urea-phosphoric acid and effects on fire performance of expandable polystyrene foams

A novel bio-based flame retardant, ammonium phosphate starch carbamates (APSC) was synthesized from starch, phosphoric acid and urea to achieve better thermal stability and char formation. Flame retardant expandable polystyrene foams (EPS) were prepared by coating method with APSC. The fire resistance evaluation of EPS composites by limiting oxygen index (LOI), vertical burning (UL-94) and cone calorimeter tests indicated that the addition of 47?wt.% of APSC enhanced the LOI from 17.6%?35.2%, with V-0 rating in UL-94, and decreased the peak heat release rate from 666?kW/m2 to 316?kW/m2. Moreover, the total smoke production was also sharply decreased from 70?m2 of pure EPS to 17?m2. By the presence of APSC, the substantial char formation prevented the heat and oxygen transfer, and interrupted the releasing of flammable products, thus protecting the EPS foam from burning.

» Author: Wenfei Ji, Di Wang, Jia Guo, Bin Fei, Xiaoyu Gu, Hongfei Li, Jun Sun, Sheng Zhang

» Reference: 10.1016/j.carbpol.2020.115841

» Publication Date: 01/04/2020

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