The Composition of Combustion Gases of Polyurethane Foams and Polycarbonate,
Abstract
The combustion gases of polyurethane (hard and soft) and of polycarbonate were investigated. The materials used were polycarbonate foil, hard polyurethane foam (fireproof), and polyurethane foam (soft) made from an isomeric mixture of 2, 4- and 2, 6-toluene diisocyanate and a linear polyester of adipinic acid and diethylene glycol. Pyrolysis temperature corresponded to a wire resistance of 4 ohms and current intensity of 1.44 amp between 530-580 C. The gas-chromatographic demonstration of carbon dioxide was made in a silica gel column. Polar substances were separated in a silicon column. The decomposition gases of the soft polyurethane contain very poisonous isocyanate. The products determined in the decomposition products of the three substances are: carbon monoxide (1,2,3), carbon dioxide (1,2,3), hydrocarbons (1) hydrogen cyanide (2,3), aromatic amines (2,3), dicarbonic acids (none), formaldehyde (1,2,3), acetaldehyde (1,2,3), acetone (1,2,3), propionaldehyde (2,3), m-cresol (2), O-cresol (1), dian (1), p-alkylphenol (1), phenol (1), and isocyanate (3) (1 equals polycarbonate, 2 equals hard polyurethane, 3 equals soft polyurethane). (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 04, 1969
- Accession Number
- AD0863434
Entities
People
- E. Hagen
Organizations
- National Air and Space Intelligence Center