Journal
PLASTICS RUBBER AND COMPOSITES
Volume 42, Issue 6, Pages 239-243Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1179/146580113X13650753142022
Keywords
Silicone rubber; Flame retardant; Red phosphorus; Alumina trihydrate
Categories
Funding
- National Natural Science Foundation of China [51106078]
- Outstanding Young Scientist Research Award Fund from Shandong Province [BS2009CL015, BS2011CL018]
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The synergistic flame retardant effects between red phosphorus (RP) and alumina trihydrate (ATH) in silicone rubber (SR) composites were evaluated using limiting oxygen index, UL 94 rating, cone calorimeter, thermogravimetric analysis and digital photographs. It has been found that the SR composite containing only ATH does not show good flame retardancy at 39.0 wt-% loading. The cone calorimeter results showed that the heat release rate, mass loss rate, mass and total heat release of SR/ATH/RP composites decrease greatly in comparison with the SR/ATH composites. The digital photographs demonstrated that 1.0 wt-% RP could promote the formation of the homogenous and compact char layer. Thus, a suitable amount of RP has a synergistic effect with ATH in the flame retardant SR composite system.
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