关键词: OMMT, CEPPAAl, 阻燃, 皮革, 纳米复合

Abstract: Aluminum carboxyethyl phenylphosphonate (CEPPAAl) and organic montmorillonite (OMMT) were combined to prepare OMMT-CEPPAAl nanocomposite flame retardant. The structure of the flame retardant was characterized by XRD and FT-TR. The composite flame retardant was used in the retanning section of leather processing. The limiting oxygen index (LOI), vertical combustion and conical calorimetry for flame retarded leather were tested, and the results showed when the OMMT content was 20% in flame retardant, LOI of flame retarded leather reached to 33.0%, flaming and flameless combustion time almost reduced to zero, and comparing with blank leather, the maximum heat release rate was reduced by 25.9% . residual carbon morphology and elements were investigated by SEM, and the results demonstrated that OMMT-CEPPAAl played role in the condensed phase. Mechanical properties and moisture and heat stability of leather were also studied, the results showed flame retarded leather maintained good mechanical properties and wet and heat stability.

Key words: OMMT, CEPPAAl, flame retardant, leather, nanocomposites