Polypropylene/clay nanocomposites prepared by <i>in situ</i> grafting‐melt intercalation with a novel cointercalating monomer

Song, Pingan; Tong, Lifang; Fang, Zhengping

doi:10.1002/app.28689

Cited by 21 publications

(27 citation statements)

References 21 publications

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“…From the spectrum of DOPNP, the was assigned to the skeleton vibration of cyclic phosphates. 21,22 The strong absorption peak at 549 cm À1 from the intermediate (DOPC) was assigned to PACl. However, it disappeared completely in the spectrum of DOPNP, and the disappearance of the characteristic absorption band of OAH indicates that the final product was obtained successfully.…”

Section: Resultsmentioning

confidence: 99%

Effect of a novel phosphorus‐containing compound on the flame retardancy and thermal degradation of intumescent flame retardant polypropylene

Zhang

Lin

et al. 2011

J of Applied Polymer Sci

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A novel flame retardant, tetra(5,5-dimethyl-1,3-dioxaphosphorinanyl-2-oxy) neopentane (DOPNP), was synthesized successfully, and its structure was characterized by FT-IR, 1 H NMR, and 31 P NMR. The thermogravimetric analysis (TGA) results demonstrate that DOPNP showed a good char-forming ability. Its initial decomposition temperature was 236.4 C based on 1% mass loss, and its char residue was 41.2 wt % at 600 C, and 22.9 wt % at 800 C, respectively. The flame retardancy and thermal degradation behavior of novel intumescent flame-retardant polypropylene (IFR-PP) composites containing DOPNP were investigated using limiting oxygen index (LOI), UL-94 test, TGA, cone calorimeter (CONE) test, and scanning electron microscopy (SEM). The results demonstrate that DOPNP effectively raised LOI value of IFR-PP. When the loading of IFR was 30 wt %, LOI of IFR-PP reached 31.3%, and it passed UL-94 V-0. TGA results show that DOPNP made the thermal decomposition of IFR-PP take place in advance; reduced the thermal decomposition rate and raised the residual char amount. CONE results show that DOPNP could effectively decrease the heat release rate peak of IFR-PP. A continuous and compact char layer observed from the SEM further proved the flame retardance.

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Section: Resultsmentioning

confidence: 99%

Effect of a novel phosphorus‐containing compound on the flame retardancy and thermal degradation of intumescent flame retardant polypropylene

Zhang

Lin

et al. 2011

J of Applied Polymer Sci

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“…This may be due to the composites with compatibilizers with relatively uniformly dispersed silicate layers, which made the chain conformation of PP molecules to be not easily changed because of the sterical hindrances and the strong interaction between the polymer and the surface of the clay, thus the composites with compatibilizers exhibited a higher T g value. 26 However, there was no significant difference in T g values of composites with compatibilizers with increasing clay content. This was associated with the addition of high melt flow index of compatibilizers that exhibited high mobility of molecules at lower temperature, except for the sterical hindrances and strong interaction between the polymer and the surface of the clay in the matrix.…”

Section: Dynamic Mechanical Behaviorsmentioning

confidence: 95%

Morphology and mechanical properties of polypropylene/ethylene acrylic acid/maleic anhybride-grafted polypropylene/organoclay nanocomposites

Tian

Qin

et al. 2016

Journal of Thermoplastic Composite Materials

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Polypropylene (PP)/ethylene acrylic acid (EAA)/maleic anhybride-grafted PP (PP-g-MA)/ organoclay nanocomposites were prepared using the melt mixing technique, and PP-g-MA and EAA were employed as the compatibilizers. The sodium montmorillonite (MMT) were pretreated with high-speed airflow pulverization method and then grafted using -glycidoxypropyltrimethoxysilane, followed by modification using trihexyltetradecylphosphonium chloride cation with supercritical carbon dioxide as the reaction medium (the obtained product was abbreviated as OGMMT). The modification of MMT was characterized by thermogravimetric analysis, X-ray diffraction (XRD), and scanning electron microscopy. The effect of organoclay content on microstructure and mechanical properties of PP/EAA/PP-g-MA/OGMMT Downloaded from nanocomposites was investigated by XRD, transmission electron microscopy, dynamic mechanical analysis, tensile strength, notched impact strength, flexural strength, and flexural modulus. The results show that the OGMMT has a high weight loss, a large d-spacing increment, and exfoliation predomination structure. The addition of compatibilizers benefited the formation of exfoliated structure and the dispersion of OGMMT in PP matrix, and hence, enhanced the storage modulus (G 0 ) below the glass transition temperature (T g ), storage modulus (G 00 ), T g , tensile strength, flexural strength, and flexural modulus of the nanocomposites. Furthermore, with the increasing OGMMT content, the nanocomposites exhibited very inconsiderable alteration in the clay dispersion level and enhanced G 0 below the T g , G 00 , tensile strength, flexural strength, and flexural modulus of the nanocomposites, whereas the T g was invariant. As a whole, the introduction of compatibilizers and OGMMT led to the reduction of notched impact strength, which also nearly linearly decreased with increasing clay content.

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“…The combustion behavior and flame retarded mechanism are especially focused on [93][94][95][96][97][98]. In the study of multiphase and multicomponent copolymer ABS/clay nanocomposite, clay can intercalate uniformly into multiphase of ABS by balancing the polarity of butadiene (by grafting maleic anhydride) and acrylonitrile-styrene phase, as shown in Figure 2.…”

Section: Flame Retarded Polymer Nanocomposites 21 Flame Retarded Polmentioning

confidence: 99%

Flame retarded polymer nanocomposites: Development, trend and future perspective

Song

Fang

2011

Sci. China Chem.

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Polymer nanocomposites are a new class of flame retarded materials which have attracted much attention and considered as a revolutionary new flame retardant approach. A very small amount of nano flame retardants (normally < 5 wt%) can significantly reduce the heat release rate (HRR) and smoke emission (SEA) during the combustion of polymer materials. Moreover, the addition of nano flame retardants can also improve the mechanical properties of polymer materials compared with the deterioration of traditional flame retardants. This paper reviews the recent development in the flame retardant field of polymer nanocomposites and also introduces the related research in our lab. The challenges and problems are discussed and the future development of flame retarded polymer nanocomposites is prospected.nanocomposite, layered silicate, carbon nanotubes, fullerene, flame retardancy

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Polypropylene/clay nanocomposites prepared by in situ grafting‐melt intercalation with a novel cointercalating monomer

Cited by 21 publications

References 21 publications

Effect of a novel phosphorus‐containing compound on the flame retardancy and thermal degradation of intumescent flame retardant polypropylene

Effect of a novel phosphorus‐containing compound on the flame retardancy and thermal degradation of intumescent flame retardant polypropylene

Morphology and mechanical properties of polypropylene/ethylene acrylic acid/maleic anhybride-grafted polypropylene/organoclay nanocomposites

Flame retarded polymer nanocomposites: Development, trend and future perspective

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