Flame retardation of polypropylene: Effect of organoantimony compounds on the flammability and thermal behavior

✍ Scribed by N. K. Jha; P. Bajaj; A. C. Misra; P. L. Maurya

• Publisher: John Wiley and Sons
• Year: 1986
• Tongue: English
• Weight: 521 KB
• Volume: 32
• Category: Article
• ISSN: 0021-8995
• DOI: 10.1002/app.1986.070320409

✦ Synopsis

Triphenylstibinedibromide and its derivatives with tribromo-, trichloro-, and pentachlorophenols have been used as flame-retardant additives for polypropylene. Maximum limiting oxygen index of 31.5 against 18.2 for unfilled polypropylene was obtained in a sample containing 10 phr of triphenylstibinedibromide. However, V-0 rating in UL-94 test was observed in 20 phr flame-retardant-filled polypropylene sample, while V-2 rating was obtained even at 5 phr flame-retardant level. Thermal behavior of flame-retardant-filled polypropylene was also studied in air atmosphere by thermogravimetric analysis, and a n attempt has been made to correlate the flammability with the thermal behavior. The residue obtained in isothermal treatment a t 450°C for ?h hour in air was analyzed for antimony and halogen which establishes the role of these flame retardants in vapor phase.