Synthesis of a New-type Carbonific and Its Application in Intumescent Flame-retardant (IFR)/Polyurethane Coatings

This work deals in the first part, with the synthesis and characterization of a new-type carbonific. Two steps were used in the synthesis of the carbonific. Meanwhile, the structure was characterized by Fourier transform infrared spectroscopy (FTIR), magic-angle spinning nuclear magnetic resonance (MAS-NMR) 13C spectroscopy and elemental analysis. The addition of ammonium-polyphosphate (APP) and the carbonific into polyurethane (PU) varnish leads to a great improvement in its carbonization and flame-retardant (FR) performances. The second part deals with choosing the most effective combination of APP, carbonific and PU varnish. The last part deals with the evaluation of characteristic performances such as FR property, thermal stability of IFR/PU-based coatings, rheology of IFR/PU-based coating solutions and mechanical properties such as hardness, adhesion, flexibility of IFR/PU-based dry coating films.

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