TY  - BOOK
AU  - Kannan P
AU  - Kishore K
TI  - Polyphosphoramido sulphides: A new class of flame retardant for HTPB
PY  - 1993///
PB  - Indian Journal of Natural Rubber Research
KW  - Flame retardant
KW  - HTPB
KW  - Limiting oxygen index
KW  - Polyphosphoramido sulphides
N2  - Polyphosphoramido sulphides were synthesized from aryl phosphoramidic dichlorides and aryl thiophosphoramidic dichlorides with sodium polysulphide in aqueous acetone medium at room temperature. These polymers were characterized by elemental analysis and IR spectroscopy.  Their thermal and flammability characteristics were evaluated by thermogravimetry and limiting oxygen index data respectively. These polymers were used as flame retardant for hydroxyl terminated polybutadiene rubber. The flammability and mechanical properties were studied for the cured HTPB rubbers. Higher sulphur content in the structure enhances the LOI and thus the flame retardancy. Polynaphthiophosphoramido sulphide emerges as a promising flame retardant amongsta four such polymer
ER  -