Synergistic effects of iron powder on intumescent flame retardant polypropylene system

Chen, X. L.; Jiao, Chuanmei; Wang, Y.

doi:10.3144/expresspolymlett.2009.45

Cited by 21 publications

(17 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The results from these studies are highly relevant for the design and preparation of IFR additives for polymers, an interesting subject studied so far. Development of a suitable IFR system additive for improving the flame retardant performance of polyolefins is still required …”

Section: Introductionmentioning

confidence: 99%

Epoxy resin/phosphorus‐based microcapsules: Their synergistic effect on flame retardation properties of high‐density polyethylene/graphene nanoplatelets composites

Xia

Tang

Tao

et al. 2018

J of Applied Polymer Sci

View full text Add to dashboard Cite

Two types of microcapsule flame retardants are prepared by coating ammonium polyphosphate (APP) and aluminum diethylphosphinate (ADP) with epoxy resin (EP) as the shell via in situ polymerization, and blended with high density polyethylene (HDPE)/graphene nanoplatelets (GNPs) composites to obtain flame‐retardant HDPE materials. Fourier transform infrared spectroscopy, scanning electron microscopy (SEM), and water contact angle results confirm the formation of core–shell structures of EP@APP and EP@ADP. The limiting oxygen index (LOI), vertical burning test (UL‐94), cone calorimetry, and Raman spectroscopy are employed to characterize the HDPE/GNPs composites filled with EP@APP and EP@ADP core–shell materials. A UL94 V‐0 level and LOI of 34% is achieved, and the two flame retardants incorporated in the HDPE/GNPs composite at 20 wt % in total play a synergistic effect in the flame retardancy of the composite at a mass ratio of EP@ADP:EP@APP = 2:1. According to the cone‐calorimetric data, the compounding composites present much lower peak heat release rate (300 kW/m2) and total heat release (99.4 MJ/m2) than those of pure HDPE. Raman spectroscopic analysis of the composites after combustion reveals that the degree of graphitization of the residual char can reach 2.31, indicating the remarkable flame retarding property of the composites. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46662.

show abstract

Section: Introductionmentioning

confidence: 99%

Epoxy resin/phosphorus‐based microcapsules: Their synergistic effect on flame retardation properties of high‐density polyethylene/graphene nanoplatelets composites

Xia

Tang

Tao

et al. 2018

J of Applied Polymer Sci

View full text Add to dashboard Cite

show abstract

“…In order to enhance the flame retardancy, new intumescent flame retardant systems have been developed rapidly [3,[6][7][8], which has high flame retardant efficiency. In addition, some synergistic agents have also been used to improve further the flame retardant of intumescent flame retardant PP systems, such as nano-Mn 0.4 Zn 0.6 Fe 2 O 4 [9], zeolites [10], montmorillonite [11,12], silica [13], alumina [13], silicotungstic acid [14], lanthanum oxide [15,16], nano-BaWO 4 [17], expandable graphite [18], iron powder [19], nanoflaky manganese phosphate [20], phosphotungstic acid [21], hydroxy silicone oil [22], a-ZrP [23], colemanite [24], zinc borate [25], polysilsesquioxane [26], borosiloxane [27] and other metallic compounds [1]. Sepiolite is a family of fibrous hydrated magnesium silicate with the theoretical half unit-cell formula Si 12 O 30 Mg 8 (OH) 4 (OH 2 ) 4 ·8H 2 O characterized by a needle-like morphology [28].…”

Section: Introductionmentioning

confidence: 99%

Synergistic effects of sepiolite on intumescent flame retardant polypropylene

Huang¹,

Chen²,

Wang³

et al. 2010

Express Polym. Lett.

View full text Add to dashboard Cite

Abstract. In this paper, the effects of sepiolite as a synergistic agent on the flame retardancy of intumescent flame retardant polypropylene (PP/IFR) were studied using the limiting oxygen index (LOI), the UL-94 test, thermogravimetric analysis (TGA), laser Raman spectroscopy (LRS), cone calorimeter test (CCT) and scanning electron microscopy (SEM), and the IFR system mainly consisted of the ammonium polyphosphate modified with γ-aminopropyltriethoxysilane coupling agent, melamine and dipentaerythritol. The results from the LOI and UL 94 tests show that sepiolite added to the PP/IFR system has a synergistic flame retardant effects with the IFR system. The TGA results reveal that sepiolite enhances the thermal stability of the PP/IFR composite and increases the char residue formation. The cone calorimeter results indicate that the heat release rate, mass loss rate, total heat release and average specific extinction area of the PP/IFR/sepiolite composite decrease in comparison with the PP/IFR composite. The LRS measurements provide useful information on the carbonaceous microstructures. The morphological structures observed by SEM have demonstrated that sepiolite promote the formation of the reinforced and homogeneous char barrier on the surface of the composites. Simultaneously, the Young's modulus and flexural modulus of the PP/IFR composites are also much better improved with the increase of sepiolite added.

show abstract

“…All the samples were scanned at the rate of 108C from room temperature to 6008C in an inert (N 2 ) atmosphere [10].…”

Section: Thermogravimetric Analysismentioning

confidence: 99%

Effect of Addition of Hybrid Nanoclay and Nano-Alumina Fillers on the Mechanical and Thermal Performances of Polypropylene Composites

Yadav

Rao

Chand

2011

Journal of Thermoplastic Composite Materials

View full text Add to dashboard Cite

In this study, we made an attempt to improve the mechanical and thermal properties of polypropylene (PP) using clay and alumina fillers. The dispersion of modified clay and alumina fillers in the polymer matrix was improved using (blended with) two different modifiers, maleic anhydride-grafted PP and ethylene-propylene-rubber, along with coupling agent. The effect of different loading levels of clay and alumina, keeping the other compositions constant, on mechanical and thermal properties of the nancomposites was studied and optimized. The dispersion of fillers was supported by X-ray diffraction and high-resolution scanning electron microscopy. Presence and absence of modifier and coupling agent on the mechanical properties were also studied. Nanocomposites with 4% clay along with modifier and coupling agent have shown the best mechanical property. While nanocomposites with 4% alumina along with modifier and coupling agent have shown better thermal properties over the other composition. There is a 20-25% of improvement in both mechanical and thermal properties.

show abstract

Synergistic effects of iron powder on intumescent flame retardant polypropylene system

Cited by 21 publications

References 35 publications

Epoxy resin/phosphorus‐based microcapsules: Their synergistic effect on flame retardation properties of high‐density polyethylene/graphene nanoplatelets composites

Epoxy resin/phosphorus‐based microcapsules: Their synergistic effect on flame retardation properties of high‐density polyethylene/graphene nanoplatelets composites

Synergistic effects of sepiolite on intumescent flame retardant polypropylene

Effect of Addition of Hybrid Nanoclay and Nano-Alumina Fillers on the Mechanical and Thermal Performances of Polypropylene Composites

Contact Info

Product

Resources

About