FIREPROOF STRUCTURES FOR WOOD ON THE BASIS OF PRODUCTS OF DESTRUCTION OF POLYURETHANES BY DIETHYLENETRIAMINE
Journal: Pozharovzryvobezopastnost/Fire and Explosion Safety (Vol.24, No. 4)Publication Date: 2015-04-25
Authors : BALAKIN V. M. Candidate of Chemistry Sciences of Pulp; Paper Production; Processing of Polymers Department GALLYAMOV A. A. Postgraduate Student SMOLNIKOV M. I. Student POSTNIKOV S. V. Student;
Page : 23-29
Keywords : polyurethane; diethylenetriamine; ammonium salts of a-aminomethylenephosphonic acids; fire-retardant efficiency; destruction;
Abstract
The purpose of this paper is to obtain nitrogen phosphorus flame retardants for wood-based products of destruction of polyurethanes by diethylenetriamine and study their properties. Destruction products are a mixture consisting of diamines, glycols, and also, the diamide of adipic acid and an excess of diethylenetriamine. Destruction products used in the reaction Kabachnik – Fields as amine component to synthesize -aminomethylenephosphonic acids, and aliphatic aromatic. The reaction mass after phosphorylation containing mixture -aminomethylenephosphonic acids neutralized with aqueous ammonia solution to pH = 7 to give a mixture of ammonium salts of -aminomethylenephosphonic acids. The resulting solution of ammonium salts of -aminomethylenephosphonic acid was tested as a flame retardant for wood. Initial evaluation of the efficiency of nitrogen phosphorus flame retardants based on destruction products of polyurethanes by diethylenetriamine showed that at a rate of more than 140 gm2 all flame retardants provide weight loss samples revesiny less than 9 %.
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