| 摘要 |
A flame-retardant polypropylene composition comprises a modified polypropylene-based polymer, antimony oxide or sodium antimonate, and a halogenated organic compound or, in lieu thereof, a phosphorous-containing compound. The polypropylene-based polymer is modified in the presence of a free-radical generator source which typically is an organic peroxide so that it has a narrow polydispersity range, improved flow, and lower compounding and molding temperatures so that temperature-sensitive components are protected from thermal degradation. The modification of the polypropylene-based polymer generally occurs in situ in the processing apparatus and the composition can also contain various fillers, fibers, and the like.
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