Understanding the influence of gypsum upon a hybrid flame retardant coating on expanded polystyrene beads

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Bhoite, Sangram P. and Kim, Jonghyuck and Jo, Wan and Bhoite, Pravin H. and Mali, Sawanta S. and Park, Kyu-Hwan and Hong, Chang Kook (2022) Understanding the influence of gypsum upon a hybrid flame retardant coating on expanded polystyrene beads. Polymers, 14 (17). 3570. ISSN 2073-4360 (https://doi.org/10.3390/polym14173570)

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Abstract

A low-cost and effective flame retarding expanded polystyrene (EPS) foam was prepared herein by using a hybrid flame retardant (HFR) system, and the influence of gypsum was studied. The surface morphology and flame retardant properties of the synthesized flame retardant EPS were characterized using scanning electron microscopy (SEM) and cone calorimetry testing (CCT). The SEM micrographs revealed the uniform coating of the gypsum-based HFR on the EPS microspheres. The CCT and thermal conductivity study demonstrated that the incorporation of gypsum greatly decreases the peak heat release rate (PHRR) and total heat release (THR) of the flame retarding EPS samples with acceptable thermal insulation performance. The EPS/HFR with a uniform coating and the optimum amount of gypsum provides excellent flame retardant performance, with a THR of 8 MJ/m2, a PHRR of 53.1 kW/m2, and a fire growth rate (FIGRA) of 1682.95 W/m2s. However, an excessive amount of gypsum weakens the flame retardant performance. The CCT results demonstrate that a moderate gypsum content in the EPS/HFR sample provides appropriate flame retarding properties to meet the fire safety standards.

ORCID iDs

Bhoite, Sangram P., Kim, Jonghyuck, Jo, Wan, Bhoite, Pravin H., Mali, Sawanta S. ORCID logoORCID: https://orcid.org/0000-0002-4973-4203, Park, Kyu-Hwan and Hong, Chang Kook;
  • Item type:Article
    ID code:89984
    Dates:
    Date
    Event
    30 August 2022
    Published
    24 August 2022
    Accepted
    Subjects:Science > Chemistry
    Department:Faculty of Science > Pure and Applied Chemistry
    Depositing user: Pure Administrator
    Date deposited:22 Jul 2024 13:58
    Last modified:11 Nov 2024 14:23
    URI:https://strathprints.strath.ac.uk/id/eprint/89984
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