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Phosphorus–, nitrogen- and carbon- containing polyelectrolyte complex: preparation, characterization, and its flame retardant performance on polypropylene
A new polyelectrolyte complex (PEC), containing phosphorus, nitrogen and carbon elements, has been prepared from positively charged polyethylenimine and negatively charged phytic acid. The PEC shows good performance on improving the thermal stability and flame retardancy of polypropylene (PP). When the content of PEC is 20 wt %, the char residues at 600 oC for the PP/PEC composites (PP/20PEC) is 1...
http://www.polymer.cn//ss/zpfang/publicationsshow_7881.html |
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Functionalized multi-walled carbon nanotube for improving the flame retardancy of ramie/poly(lactic acid) composite
Carbon nanotube (CNT) as a candidate of flame retardant additive has raised great interest among researchers. However, the insolubility and the aggregation of CNTs have severely limited their applications. This work aimed to functionalize CNT with a phosphorus-containing flame retardant to improve both flame retardancy and the dispersion. 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10...
http://www.polymer.cn//ss/taoyu/publicationsshow_7576.html |
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Halogen-free flame retardant poly (vinyl alcohol) foams prepared through thermal processing
Novel
halogen-free flame retardant PVA-based composite foams were successfully prepared
through continuous extrusion foaming using water as plasticizer and blowing
agent. The morphology, cellular structure and flame retardancy of
the prepared PVA foams were investigated. It was found that the halogen-free flame retardant containing
nitrogen-phosphorus (NPCs) were well dispersed in PVA matrix due...
http://www.polymer.cn//ss/danielguo/publicationsshow_7254.html |
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Structure and properties of halogen-free flame retardant poly (vinyl alcohol)/melamine phosphate composites
This paper reported the
structure and properties of halogen-free flame retardant poly (vinyl alcohol)
/melamine phosphate (PVA/MP) composites prepared through thermal processing using water as plasticzer.
SEM analysis showed that the halogen-free flame retardant MP was well dispersed in
PVA matrix due to the strong interactions between MP and PVA. Combustion test showed that the
prepared composi...
http://www.polymer.cn//ss/danielguo/publicationsshow_7253.html |
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Poly (vinyl alcohol)/melamine phosphate composites prepared through thermal processing: thermal stability and flame retardancy
Abstract: Poly
(vinyl alcohol)/melamine phosphate composites (PVA/MP) as a novel halogen-free flame retardant foam
matrix were
prepared through thermal processing, and then their
thermal stability and flame retardancy were investigated by thermo-gravimetric
analysis (TGA), micro-scale combustion calorimeter (MCC), cone calorimeter, vertical burning test and limiting oxygen index test
(LOI). It was...
http://www.polymer.cn//ss/danielguo/publicationsshow_7248.html |
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Effect of graphene nanosheets and layered double hydroxides on the flame retardancy and thermal degradation of epoxy resin
Effect of graphene nanosheets (GNS) and layered double hydroxides (LDH) on morphology, flame retardancy and thermal degradation of epoxy resin (ER) was investigated. LDH was exfoliated in ER/GNS/LDH nanocomposites. GNS was partially exfoliated and partially agglomerated to form small clusters. Since not all of the GNS was in good dispersion, the compactness and barrier properties of residual char ...
http://www.polymer.cn//ss/zpfang/publicationsshow_7239.html |
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Phosphorus-containing flame retardant ramie fiber reinforced poly(lactic acid)(PLA) composites
In the present study, APP and DOPO were used to impart flame retardancy to ramie/PLA biocomposites respectively. The flammability of the composites was deeply investigated by UL94, LOI and SEM measurement. The influence of APP and
DOPO on the mechanical properties&nb...
http://www.polymer.cn//ss/taoyu/publicationsshow_7214.html |
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Influence of Ammonium polyphosphate on the flame retardancy of ramie fiber reinforced poly(lactic acid) biocomposites
Fully degradable natural fiber/degradable polymer composites have received much research attention and have various applications such as in automotive components. But flammability limits their application; it is important to improve the flame retardancy of fully degradable composites with environmentally friendly flame retardants. Flame-retarded ramie fiberreinforced poly(lactic acid) (PLA) compos...
http://www.polymer.cn//ss/taoyu/publicationsshow_7203.html |
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Flame-retardant coating by the layer-by-layer assembly of poly(vinylphosphonic acid) and polyethylenimine for ramie fabric
A novel intumescent flame retardant coating, consisting of poly(vinylphosphonic acid) (PVPA) as the acid source and branched polyethylenimine (BPEI) as the blowing agent, was constructed on the surface of ramie fabric by layer-by-layer (LbL) assembly to remarkably improve the flame retardancy of ramie. The PVPA/BPEI coating on the surface of individual fibers of ramie fabric pyrolyzes to form prot...
http://www.polymer.cn//ss/zpfang/publicationsshow_6869.html |
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Synthesis of cerium phenylphosphonate and its synergistic flame retardant effect with decabromodiphenyl oxide in glass-fiber reinforced poly(ethylene terephthalate)
A lamellar cerium phenylphosphonate (CeHPP) was synthetized through reflux method and it was combined with decabromodiphenyl oxide (DBDPO) to prepare flame retarded poly(ethylene terephthalate) (PET) nanocomposites. Scanning electron microscopy (SEM) and X-ray diffraction (XRD) showed that CeHPP was a one-dimensional nanocrystal with the interlamellar distance of 1.57 nm. Thermogravimetric analysi...
http://www.polymer.cn//ss/zpfang/publicationsshow_6867.html |
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