Polymer/polyhedral oligomeric silsesquioxane (POSS) nanocomposites: An overview of fire retardance

Zhang, Wenchao; Camino, Giovanni

doi:10.1016/j.progpolymsci.2016.09.011

Cited by 371 publications

(184 citation statements)

References 220 publications

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“…It is in accordance with the results of previous investigations [23,28,29]. However, the fire behavior of foamed polyurethane materials is strongly influenced by their cellular structure that is modified in the presence of POSS nanocages.…”

Section: Flammability Studiessupporting

confidence: 92%

Thermal stability and flammability of polyurethane foams chemically reinforced with POSS

Michałowski

Hebda

Pielichowski

2017

J Therm Anal Calorim

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This work reports on the thermal stability and flammability of a novel class of rigid polyurethane foams chemically modified by functionalized 1,2-propanediolisobutyl POSS (PHI-POSS) as a pendant group and octa (3-hydroxy-3-methylbutyldimethylsiloxy) POSS (OCTA-POSS) as a chemical cross-link. The foamed hybrid materials were prepared in a three-step process using a sorbitol-based polyether polyol, polymeric 4,4 0 -diphenylmethane diisocyanate and dimethyl propane phosphonate as a flame retardant. The addition of the POSS modifier influences the PU cellular structure as evidenced by a change in anisotropy index of the cross section parallel to the growth direction. Based on thermogravimetric data and flammability results, one can suggest that there is char formation at the surface and the formed layer acts as an insulating barrier limiting heat and mass transfer with flame retardant and thus leading to decreased heat release rate, especially for systems containing OCTA-POSS.

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Section: Flammability Studiessupporting

confidence: 92%

Thermal stability and flammability of polyurethane foams chemically reinforced with POSS

Michałowski

Hebda

Pielichowski

2017

J Therm Anal Calorim

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“…Silsesquioxanes are widely used as components for the preparation of such materials [1][2][3][4][5][6][7][8][9][10]. Commonly reactive, functionalized polyhedral oligomeric silsesquioxanes of well-defined, 3D structure, bearing one or more functional groups were applied for this purpose [11][12][13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Polyurethane composites based on silsesquioxane derivatives of different structures

Szołyga

Dutkiewicz

Marciniec

2018

J Therm Anal Calorim

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A series of siloxane-silsesquioxane resins with Q 8 structures, as network nodes containing reactive Si-H groups in the siloxane backbone, connecting silsesquioxane moieties, were prepared in a hydrolytic condensation process and successfully functionalized by hydrosilylation of allyl alcohol. The proposed material being an alternative to the well-defined silsesquioxanes has been characterized and used for preparation of a series of polyurethane (PU)-based composites by simple reaction of 3-hydroxypropyl groups of siloxane-silsesquioxane resin with 1,6-diisocyanatohexane and subsequently with 1,6-hexanediol to get polyurethane composite. A series of composites based on PU and octakis(3-hydroxypropyldimethylsiloxy)octasilsesquioxane were prepared in the same manner to investigate the influence of the filler amount (1, 3 or 5%) and its structure on thermal properties of the obtained materials.

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“…5b) were measured (FAS:TEOS was 1:10). As the high-efficient fire retardants, during the flaming process, APP and POSS could not only form a thin membrane that wrapped tightly around the materials to isolate oxygen, but it also performed a dehydration and carbonization reaction with the combustion materials to decrease the temperature and reduced the release of flammable gases (Song et al 2012;Zhang et al 2017). Typically, when melt-blended with polymers, APP acted as a nucleating agent, decreasing tensile strength (Douglas et al 2014).…”

Section: Flame Retardancymentioning

confidence: 99%

Novel Medium-density Fibreboard Produced by Ultrasonic-assisted Pulp with Superhydrophobic and Flame-Resistant Properties

Zhang

Xing

et al. 2017

BioResources

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A novel medium-density fibreboard produced by an ultrasonic-assisted wheat straw pulp (UWP) was obtained without adhesives. It was then coated with a superhydrophobic sol solution integrated with an in vitro addition of two fire retardants (polyhedral methyl-silsesquioxane and ammonium polyphosphate) during the process of sol-gel reaction involving the two silane precursors tetraethyl orthosilicate (TEOS) and tridecafluorooctyltriethoxysilane (FAS). The coated UWP medium-density fibreboard (UPB) had good strength properties and possessed excellent hydrophobicity (water contact angle (WCA) above 150°), and flameresistant properties (limiting oxygen index (LOI) improved by 5% compared with the original sample with a LOI of 18%). Meanwhile, the fibreboard also exhibited outstanding anti-permeability towards water (kept constant WCA for more than 1 h).

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Polymer/polyhedral oligomeric silsesquioxane (POSS) nanocomposites: An overview of fire retardance

Cited by 371 publications

References 220 publications

Thermal stability and flammability of polyurethane foams chemically reinforced with POSS

Thermal stability and flammability of polyurethane foams chemically reinforced with POSS

Polyurethane composites based on silsesquioxane derivatives of different structures

Novel Medium-density Fibreboard Produced by Ultrasonic-assisted Pulp with Superhydrophobic and Flame-Resistant Properties

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