combustibility of loose fiber fill cellulose insulation: the role of borax and boric acid
The influence of borax and boric acid on the resistance of cellulose insulation to smouldering and flaming combustion has been examined using material treated by a wet application process. Boric acid has been shown to be required at an add-on level of at least 11.6 parts to 100 parts (by weight) of cellulose if resistance to smouldering combustion by cigarette ignition is to be achieved. In order to increase the resistance of the material to flaming combustion, however, it has been shown that borax is required in the formulation. Moreover, in order to maintain the resistance to smouldering combustion it has been found necessary subsequently to increase the add-on of boric acid. the relationship between the amount of boric acid required to maintain resistance to smouldering combustion while providing for resistance to flaming combustion with borax is given by: boric acid required (pph) = 11.6 + (0.185 x (borax used)).
- Research Organization:
- National Research Council, Ottawa, Canada
- OSTI ID:
- 6335473
- Journal Information:
- J. Therm. Insul.; (United States), Journal Name: J. Therm. Insul.; (United States) Vol. 2; ISSN JTIND
- Country of Publication:
- United States
- Language:
- English
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36 MATERIALS SCIENCE
360603* -- Materials-- Properties
42 ENGINEERING
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BORIC ACID
CARBOHYDRATES
CELLULOSE
CHEMICAL REACTIONS
COMBUSTION
DATA
DATA FORMS
EXPERIMENTAL DATA
FIRE RESISTANCE
GRAPHS
HYDROGEN COMPOUNDS
INFORMATION
INORGANIC ACIDS
NUMERICAL DATA
ORGANIC COMPOUNDS
OXIDATION
PERFORMANCE TESTING
POLYSACCHARIDES
SACCHARIDES
TABLES
TESTING
THERMAL INSULATION
THERMOCHEMICAL PROCESSES