Investigation of flame retarded polypropylene by high-speed planar laser-induced fluorescence of OH radicals combined with a thermal decomposition analysis

Geschwindner, Christopher; Goedderz, Daniela; Li, Tao; Köser, Jan; Fasel, Claudia; Riedel, Ralf; Altstädt, Volker; Bethke, Christian; Puchtler, Florian; Breu, Josef; Döring, Manfred; Dreizler, Andreas; Böhm, Benjamin

doi:10.1007/s00348-019-2864-5

Cited by 9 publications

(5 citation statements)

References 25 publications

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“…In general, next to the commercial foam core material KD‐PET, both core materials HFR‐PET and 2‐PSMP‐PET cores show highest potential when combined with DEPAl in a resin for an improved burning behavior of the sandwich structure, because both have gas phase activity 37 …”

Section: Resultsmentioning

confidence: 99%

Fire behavior of flame retarded sandwich structures containing PET foam cores and epoxy face sheets

et al. 2020

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Within this work, the investigation on interactions of a phosphorus-containing flame retardant (FR) DEPAl in epoxy face sheets and five different FRs in the PET-foam core of a sandwich laminate on the fire behavior is focused. Fourteen different combinations of resin face sheets and PET foam cores are produced by vacuum assisted resin infusion (VARI). The combustion behavior of the sandwich laminates is tested by cone calorimetry. The time to ignition is lowered when a FR resin is used while the subsequent burning behavior is mainly influenced by the PET foam core. In order to evaluate the interactions of the flame retardants in the core and face sheet, a total improvement value (TIV) was set up which compares the performance related to the specific FR combinations. The highest TIV value (76%) indicating positive interactions with DEPAl was observed with a 2-PSMP-PET core, the lowest value (−2%) with a DEPZn-PET core.

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Section: Resultsmentioning

confidence: 99%

Fire behavior of flame retarded sandwich structures containing PET foam cores and epoxy face sheets

et al. 2020

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“…24 Copyright 2020, The Royal Society of Chemistry method is widely used to assess the antioxidant capacity of free radical capturers and even the polymeric composites. For instance, Geschwindner et al 29 has successfully monitored the free radical trapping effect of flame retardants (FRs) during the thermal degradation of polypropylene (PP) using high-speed planar laser-induced fluorescence technology.…”

Section: Determination Of Free Radicalsmentioning

confidence: 99%

Recent advances in fire‐retardant carbon‐based polymeric nanocomposites through fighting free radicals

Sai

Ran

Guo

et al. 2022

SusMat

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Polymeric materials are ubiquitously utilized in modern society and continuously improve quality of life. Unfortunately, most of them suffer from intrinsic flammability, significantly limiting their practical applications. Fundamentally, free-radical reaction is a critical "trigger" for their thermal pyrolysis and following combustion process regardless of the anaerobic thermal pyrolysis in the condensed phase or aerobic combustion of polymers in the gaseous phase. The addition of free radical scavengers represents a promising and effective means to enhance the fire safety of polymeric materials. This review aims to offer a state-ofthe-art overview on the creation of fire-retardant polymeric nanocomposites by adding fire retardants with an ability to trap free radicals. Their specific modes of action (condensed-phase action, gaseous-phase action, and dual-phases action) and performances in some typical polymers are reviewed and discussed in detail.Following this, some key challenges associated with these free-radical capturers are discussed, and design strategies are also proposed. This review provides some insights into the modes of action of free radical capturing agents and paves the avenue for the design of advanced fire-retardant polymeric nanocomposites for expanded real-world applications in industries.

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“…It played an important role in preventing the insulation of thermal oxygen. [44,45] Because SiO 2 @MAPP and DPER formed a dense barrier layer, it was benefitted to reduce the mass loss. The heat release rates of pure LDPE and flame-retardant LDPE composites were obtained from DTG analysis, as shown in Figure 9b.…”

Section: Smoke Density Analysismentioning

confidence: 99%

Investigation of novel intumescent flame retardant low‐density polyethylene based on SiO₂@MAPP and double pentaerythritol

Shan

et al. 2020

J of Applied Polymer Sci

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To improve the flame‐retardant property of low‐density polyethylene (LDPE) composites, a novel intumescent flame retardant (IFR) consisting of ammonium polyphosphate (APP) covered by silicon dioxide and 3‐(Methylacryloxyl) propyltrimethoxy silane (KH‐570) (SiO2@MAPP) and double pentaerythritol (DPER) was synthesized. Various methods were applied to structural characterization and property investigations of different samples. The results indicated that the solubility of APP decreased after coating with silicon dioxide (SiO2) and KH‐570. The flame retardancy of LDPE composites was improved with addition of IFR containing SiO2@MAPP/DPER. With 30 wt% addition of IFR containing SiO2@MAPP /DPER, the limiting oxygen index reached 26.8% and the tensile strength was 3.30 MPa. The tensile strength was 7.14% higher than that of 30 wt% IFR without SiO2@MAPP. The smoke density test showed that the flue gas emission was obviously improved. The addition of SiO2@MAPP effectively increased the residual carbon content of composites and thermal stability of the composites.

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Investigation of flame retarded polypropylene by high-speed planar laser-induced fluorescence of OH radicals combined with a thermal decomposition analysis

Cited by 9 publications

References 25 publications

Fire behavior of flame retarded sandwich structures containing PET foam cores and epoxy face sheets

Fire behavior of flame retarded sandwich structures containing PET foam cores and epoxy face sheets

Recent advances in fire‐retardant carbon‐based polymeric nanocomposites through fighting free radicals

Investigation of novel intumescent flame retardant low‐density polyethylene based on SiO₂@MAPP and double pentaerythritol

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Investigation of flame retarded polypropylene by high-speed planar laser-induced fluorescence of OH radicals combined with a thermal decomposition analysis

Cited by 9 publications

References 25 publications

Fire behavior of flame retarded sandwich structures containing PET foam cores and epoxy face sheets

Fire behavior of flame retarded sandwich structures containing PET foam cores and epoxy face sheets

Recent advances in fire‐retardant carbon‐based polymeric nanocomposites through fighting free radicals

Investigation of novel intumescent flame retardant low‐density polyethylene based on SiO2@MAPP and double pentaerythritol

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Investigation of novel intumescent flame retardant low‐density polyethylene based on SiO₂@MAPP and double pentaerythritol