The Effect of Soluble Ammonium Polyphosphate on the Properties of Water Blown Semirigid Polyurethane Foams

<div>The SEM micrographs of SPUF and SPUF/APP<sub>19</sub>.</div>

Advances in Materials Science and Engineering

Figure 6: The Effect of Soluble Ammonium Polyphosphate on the Properties of Water Blown Semirigid Polyurethane Foams 