An Investigation on Synergism of an Intumescent Flame Retardant Based on Silica and Alumina
Source abstract
Abstract
Silicon-based materials appear potentially to be attractive flame-retardants because of the protective coatings formed in fire, which decreases the rate of heat release. But few reports were presented about inorganic materials, such as SiO 2 , Al 2 O 3 , used as additive flame-retardants. In this paper the degradation process of the intumescent system, polypropylene (PP)/Ammonium Polyphosphate (APP)-Pentaerythritol (PER), with and without SiO 2 , Al 2 O 3 or blend of SiO 2 and Al 2 O 3 was investigated by means of cone calorimetry, TGA, LOIs measured at ambient and elevated temperature (represented by a t and TI, respectively). For PP/APP-PER system with the blend of SiO 2 and Al 2 O 3 a maximal synergy was observed at the highest LOI of 35.5%, 17 units higher than the virgin PP. Its excellent flame-retardance was also evidenced by the highest residue char measured from TGA and parameters (MRL, PK-HRR, etc.) from Cone calorimetry.
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Research context
OpenAlex topics: Flame retardant materials and properties · Polymer Nanocomposites and Properties · Synthesis and properties of polymers
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Chemistry and Chemical Engineering Shanghai Jiaotong University 800, Dong Chuan Road Min Hang, 200240 Shanghai, China
National Laboratory of Flame Retardant Materials School of Chemical Engineering and Materials Beijing Institute of Technology 100081, Beijing, China
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