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http://dx.doi.org/10.17702/jai.2019.20.3.96

Flame Retardancy and Physical Properties of Polyurethane Foam with Expandable Graphite  

Bae, Sung-Jun (Korea Institute of Footwear & Leather Technology)
Park, Ji-Hyeon (Korea Institute of Footwear & Leather Technology)
Go, Jae-Wang (Korea Institute of Footwear & Leather Technology)
Choi, Pil-Jun (Korea Institute of Footwear & Leather Technology)
Lee, Jae-Yeon (Korea Institute of Footwear & Leather Technology)
Sur, Suk-Hun (Korea Institute of Footwear & Leather Technology)
Publication Information
Journal of Adhesion and Interface / v.20, no.3, 2019 , pp. 96-101 More about this Journal
Abstract
In this study, the flame retardant and physical properties of the expandable graphite/polyurethane foam composites were considered by the addition of expandable graphite. The tensile strength of expandable graphite/polyurethane foam composites decreased with the content of the expandable graphite and the analysis of cell shape by SEM has shown that as the expandable graphite content increases, the cell becomes uneven and collapses. As the results of the compressive strength, density and air permeability tests, it was found that density and as the content of the expandable graphite increased, the compressive strength of the composites increased but air permeability decreased. When the amount of expandable graphite was added at 10 phr or higher, the foam has excellent flame retardation performance. Analysis of the degree of diffraction by X-ray diffraction (XRD) showed that as the content of the expandable graphite increased, the crystal peak of the graphite appeared near $2{\theta}=26^{\circ}$.
Keywords
Polyurethane foam; Expandable graphite; Flame retardancy; Char length; Cell;
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