Abstract
The efficacy of the flameproofing effect of alkylphosphonic acid ammonium salt for polyester materials was investigated. It was shown that treating materials with a 12% solution of APAAS (alkylphosphonic acid ammonium salt) resulted in difficultly ignitable materials. Materials characterized by high surface density and thickness acquired higher flameproofing indexes. The study of thermolysis of polyester materials treated with APAAS showed that this flame retardant causes the formation of carbonized residue of a certain mass, composition, and structure which reduces the combustibility of the material. The flameproof properties of polyester fabrics modified with APAAS persisted over multiple chemical cleanings.
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