Synthesis and characterization of a functional polyhedral oligomeric silsesquioxane and its flame retardancy in epoxy resin

Wu, Kun; Song, Lei; Hu, Yuan; Lu, Hongdian; Kandola, Baljinder K.; Kandare, Everson

doi:10.1016/j.porgcoat.2009.04.008

Cited by 184 publications

(109 citation statements)

References 29 publications

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“…As shown in Figure 7, the gaseous products of PLA at maximum decomposition rate include characteristic bands of [17][18][19] And the main gaseous products for PLA/15% PCPP at the maximum decomposition rate are similar to that of PLA. Moreover, new absorption bands at 1260 cm 21 (P@O) and 1121 cm 21 (APAOAPAO) indicate that the polyphosphate structures are formed by decomposition of PCPP.…”

Section: Determination Of the Degradation Mechanism Using Criado Methodsmentioning

confidence: 92%

Thermal degradation behavior and gas phase flame‐retardant mechanism of polylactide/PCPP blends

Lin

Han

Dong

2014

J of Applied Polymer Sci

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The thermal degradation behavior of the blend based on polylactide (PLA) and poly(1,2-propanediol 2-carboxyethyl phenyl phosphinate) (PCPP) was investigated by the thermogravimetric analysis (TGA). Thermal degradation activation energies (E a ) of neat PLA and PLA/15% PCPP blend were calculated via the Flynn-Wall-Ozawa method. The E a of the blends increased with the addition of PCPP increasing when the conversion was higher than 10%. In addition, the appropriate conversion models for the thermal degradation process of PLA and PLA/15% PCPP were studied via the Criado method. At the same time, the main gaseous decomposition products of PLA and its blend were identified by TGA/infrared spectrometry (TGA-FTIR) analysis. And it revealed that the PCPP improved the flame-retardant property of PLA via altering the release of the flammable gas and nonflammable gas. Moreover, the PCPP improved the flame-retardant property of PLA by inhibiting exothermic oxidation reactions in the combustion, which was further proved by pyrolysis-gas chromatography-mass spectrometry analysis.

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Section: Determination Of the Degradation Mechanism Using Criado Methodsmentioning

confidence: 92%

Thermal degradation behavior and gas phase flame‐retardant mechanism of polylactide/PCPP blends

Lin

Han

Dong

2014

J of Applied Polymer Sci

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“…6 C for the EP in nitrogen atmosphere, which indicates that the thermal stability of EP was enhanced by the PMPSQ. Meanwhile, PMPSQ widens the temperature range of EP thermal degradation process and the peak rate of weight loss curves decreases with the rising of PMPSQ content.…”

Section: Thermal Analysis Of Ep/pmpsq Systemsmentioning

confidence: 91%

Nonisothermal degradation kinetics for epoxy resin systems containing polymethylphenylsilsesquioxane

Wang¹,

Zhan²,

Fang³

et al. 2011

J of Applied Polymer Sci

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ABSTRACT:The thermal degradation behaviors of polymethylphenylsilsesquioxane/epoxy resin (PMPSQ/EP) systems were investigated by thermogravimetric analysis (TGA) under nonisothermal conditions in nitrogen atmosphere. During nonisothermal degradation, Kissinger's and Flynn-Wall-Ozawa's methods were both used to analyze the thermal degradation process. The results showed that a remarkable increase of activation energy was observed in the presence of PMPSQ, which indicated that the addition of PMPSQ retarded the thermal degradation of EP.Flynn-Wall-Ozawa's method further revealed that PMPSQ significantly increased the activation energy of EP thermal degradation especially in the early and final stage of thermal degradation process, which illustrated that the PMPSQ stabilized the char layer and improved the flame retardancy of EP.

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“…The authors related an increase of 6 °C in the T g value of the epoxy/silsesquioxane system with the incorporation of 5 wt% silsesquioxane, however, the addition of 15 and 20 wt% of silsesquioxane reduced the epoxy T g values in 4 and 6 °C, respectively. Wu and co-workers 12 produced a functional polyhedral oligomeric silsesquioxane (POSS) with two epoxy groups, which was incorporated in an epoxy resin, resulting in a hybrid material with improved flame retardancy and thermal stability. Furthermore, the authors proposed the degradation mechanism of this hybrid material, suggesting that the POSS is responsible to retard the movement and scission of epoxy polymeric chains, forming a stable charred layer that prevents the underlying materials from further combustion.…”

Section: Introductionmentioning

confidence: 99%

Hybrid Nanocomposites Based on Epoxy/silsesquioxanes Matrices Reinforced with Multi-walled Carbon Nanotubes

2015

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Synthesis and characterization of a functional polyhedral oligomeric silsesquioxane and its flame retardancy in epoxy resin

Cited by 184 publications

References 29 publications

Thermal degradation behavior and gas phase flame‐retardant mechanism of polylactide/PCPP blends

Thermal degradation behavior and gas phase flame‐retardant mechanism of polylactide/PCPP blends

Nonisothermal degradation kinetics for epoxy resin systems containing polymethylphenylsilsesquioxane

Hybrid Nanocomposites Based on Epoxy/silsesquioxanes Matrices Reinforced with Multi-walled Carbon Nanotubes

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