Flammability, structure and mechanical properties of PP/OMMT nanocomposites

Szustakiewicz, Konrad; Kiersnowski, Adam; Gazińska, Małgorzata; Bujnowicz, K.; Pigłowski, J.

doi:10.1016/j.polymdegradstab.2010.11.001

Cited by 33 publications

(22 citation statements)

References 15 publications

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“…Structural Characterization of Mg-Al-H 2 PO 4 2 LDHs [22]. The characteristic absorption band at 1,365 cm 21 in LDHs was assigned to the carbonate stretching, which disappeared in M-LDHs whereas new peaks at 1,245 and 1,080 cm 21 could be observed.…”

Section: Resultsmentioning

confidence: 99%

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Flammability and thermal behavior of polypropylene composites containing dihydrogen phosphate anion‐intercalated layered double hydroxides

Zhang

Liu

et al. 2014

Polymer Composites

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Dihydrogen phosphate anion‐intercalated layered double hydroxides (M‐LDHs) was prepared by modification of Mg‐Al‐CO32− layered double hydroxides (LDHs) with anion exchange procedure. The structure of the M‐LDHs was characterized by X‐ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and transmission electron microscope (TEM). Polypropylene (PP)/LDHs and PP/M‐LDHs composites were prepared by melt compounding. The morphology of PP composites was investigated by TEM and XRD, which demonstrated that M‐LDHs could be well dispersed in PP matrix to form a nano‐scale exfoliated structure. Thermogravimetric analysis showed that thermal stability of PP composites was improved by the presence of LDHs and M‐LDHs. The flammability of PP composites was characterized by limited oxygen index, vertical burning test (UL‐94), FTIR, and cone calorimeter test, and the result showed the fire performance were significantly improved after the addition of LDHs and/or M‐LDHs which can remarkably decrease the heat release rate, total heat release, and the fire performance index. It was proposed that the lamellar structure of LDHs can block the heat, dilute the flammable gases and decrease the temperature, while the replaced H2PO4− into LDHs molecules can enhance the charred layer formation during burning procedure. Inductively coupled plasma mass spectrometer analysis showed that most phosphorus remained in the char layer, suggesting the replaced H2PO4− in LDHs molecules mainly function in the condensed phase. POLYM. COMPOS., 36:2230–2237, 2015. © 2014 Society of Plastics Engineers

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Section: Resultsmentioning

confidence: 99%

“…Nanocomposite consisting of polymer matrix and nano‐scale particles display improved thermal and combustion properties. PP incorporating with natural or synthetic layered minerals like clays has been demonstrated to be an effective way to enhance its flame retardancy .…”

Section: Introductionmentioning

confidence: 99%

Flammability and thermal behavior of polypropylene composites containing dihydrogen phosphate anion‐intercalated layered double hydroxides

Zhang

Liu

et al. 2014

Polymer Composites

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“…It is composed of joined silica and alumina sheets stacked on the top of one another [4]. The aim of introducing montmorillonite was to improve mechanical, barrier properties and fire retardancy of polymer matrix [5][6]. However it is well known that MMT can influence the photodegradation process of nanocomposites.…”

Section: Introductionmentioning

confidence: 99%

Degradation of polylactide composites under UV irradiation at 254 nm

Olewnik-Kruszkowska

Koter

Skopińska-Wiśniewska

et al. 2015

Journal of Photochemistry and Photobiology A: Chemistry

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“…Recently, OMMT has been added to polymers for flame‐retarding purposes . Before the nanocomposite structure collapses, it can help to hinder the permeability of oxygen and heat in the bulk material.…”

Section: Introductionmentioning

confidence: 99%

Effects of the loading levels of organically modified montmorillonite on the flame‐retardant properties of asphalt

Zhang

Fan²,

Zhang

et al. 2014

J of Applied Polymer Sci

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ABSTRACT:The flame-retardant properties of asphalt for some building applications are very important. In this study, we mainly focused on the influence of organically modified montmorillonite (OMMT) on the flame-retardant and other properties of asphalt in a large content range and explored suitable contents of OMMT for modified asphalts. Modified asphalts with different contents of OMMT from 2 to 15 wt % were prepared by melt blending. The X-ray diffraction results revealed that the intercalated structure was formed in the OMMT-modified asphalt. Rubber processing analysis results indicated the formation of a filler-network structure in the OMMT-modified asphalt. The limiting oxygen index and cone calorimetry results suggested that OMMT could be used as efficient and ideal flame retardants of asphalt. The results also reveal that excess OMMT contents (i.e., >10 wt %) depredated the flameretardant performance of the modified asphalt. We analyzed the mechanism by taking into account of the features of the modified agent for OMMT. The experimental data showed that the viscosity, softening point, and penetration index of the OMMT-modified asphalt increased with increasing OMMT content, but the ductility decreased slightly when the OMMT content was not beyond 7 wt %.

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Flammability, structure and mechanical properties of PP/OMMT nanocomposites

Cited by 33 publications

References 15 publications

Flammability and thermal behavior of polypropylene composites containing dihydrogen phosphate anion‐intercalated layered double hydroxides

Flammability and thermal behavior of polypropylene composites containing dihydrogen phosphate anion‐intercalated layered double hydroxides

Degradation of polylactide composites under UV irradiation at 254 nm

Effects of the loading levels of organically modified montmorillonite on the flame‐retardant properties of asphalt

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