| |
Density Effect on Flame Retardancy, Thermal Degradation, and Combustibility of Rigid Polyurethane Foam Modified by Expandable Graphite or Ammonium Polyphosphate
The current study aims at comparatively investigating the effect of apparent density on flame retardancy, thermal degradation and combustion behaviors of rigid polyurethane foam (RPUF), RPUF/ expandable graphite (EG) and RPUF/ ammonium polyphosphate (APP). A series of RPUF, RPUF/EG and RPUF/APP samples with different apparent densities (30, 60 and 90 kg/m) were prepared. The flame retardancy, ther...
http://www.polymer.cn//ss/yanghongyu/publicationsshow_14344.html |
| |
Fire retardance and smoke suppression of polypropylene with a macromolecular intumescent flame retardant containing caged bicyclic phosphate and piperazine.
A macromolecular intumescent flame retardant (FR) named PPPAP was designed and synthesized with phosphorus chloride (the acid source), 2,6,7-trioxal-phosphabicyclo[2.2.2]-octane-4-methanol (the charring agent), and anhydrous piperazine (the blowing agent). Then, it was used to prepare an intumescent flame-retardant polypropylene (FR-PP). The thermal stability, flame retardancy, and fire performa...
http://www.polymer.cn//ss/yangrong/publicationsshow_14160.html |
| |
A facile way to prepare phosphorus-nitrogen-functionalized graphene oxide for enhancing the flame retardancy of epoxy resin
In this paper, we have reported a facile way to functionalize graphene oxide (GO) via assembling a supermolecular aggregate of piperazine (PiP) and phytic acid (PA) onto the GO surface (PPGO) without using any organic solvent. The functionalization of GO is confirmed by the X-ray photoelectron spectrum (XPS), transmission electron micrographs (TEM) and Raman spectrum. The introduction of 3 wt% PPG...
http://www.polymer.cn//ss/zpfang/publicationsshow_13814.html |
| |
Enhancing the Flame Retardancy of Polyamide 6 by Guanidine Sulfamate Modified Carbon Nanoparticles: Carbon Nanotubes versus Graphite Oxide
Not available
http://www.polymer.cn//ss/zhangshengfrml/publicationsshow_13576.html |
| |
The preparation of fully bio‐based flame retardant poly(lactic acid) composites containing casein
In this work, a bio-based flame retardant, casein, was incorporated into poly(lactic acid) (PLA) matrix by melt compounding in order to improve the fire resistance and sustain the biodegradable character of PLA simultaneously. The fire performance of PLA composites was evaluated by limiting oxygen index, UL-94 vertical burning, and cone calorimeter tests, respectively. The results indicated that...
http://www.polymer.cn//ss/zhangshengfrml/publicationsshow_13572.html |
| |
Flame‐retardant expandable polystyrene foams coated with ethanediol‐modified melamine–formaldehyde resin and microencapsulated ammonium polyphosphate
Melamine–formaldehyde resin was modified by ethylene glycol to decrease the amount of free formaldehyde and extend the storage time. The modified resin (EMF) was further used to prepare microencapsulated ammonium polyphosphate (MCAPP). The structures of both EMF and MCAPP were well characterized. Afterward, EMF and MCAPP were mixed and coated on the surface of pre‐expanded polystyrene particles ...
http://www.polymer.cn//ss/zhangshengfrml/publicationsshow_13571.html |
| |
Synergistic effects of modified hydrotalcite on improving the fire resistance of ethylene vinyl acetate containing intumescent flame retardants
The NH2SO3?1 intercalated MgAl‐LDH (SA‐LDH) was prepared and then introduced into ethylene vinyl acetate (EVA) in association with intumescent flame retardants (IFR) in order to improve the flame retardancy of the composite. The structure and thermal stability of SA‐LDH was characterized by Fourier transform infrared, X‐ray diffraction, transmission electron microscopy, and thermogravimetry an...
http://www.polymer.cn//ss/zhangshengfrml/publicationsshow_13570.html |
| |
Improving the flame resistance and thermal conductivity of ethylene‐vinyl acetate composites by incorporating hexachlorocyclotriphosphazene‐modified graphite and carbon nanotubes
Graphite has been regarded as a promising additive for improving the fire safety and thermal conductivity (TC) of polymers. In this article, graphite was modified by grafting with hexachlorocyclotriphosphazene to prepare a novel modified graphite oxide (M‐GO). M‐GO in association with multiwalled carbon nanotubes (MWNT) were introduced into ethylene‐vinyl acetate (EVA) by melt compounding to pr...
http://www.polymer.cn//ss/zhangshengfrml/publicationsshow_13568.html |
| |
Improvement of flame retardancy and thermal stability of polypropylene by P-type hydrated silica aluminate containing lanthanum
Phosphotungstic acid is a typical kind of superior catalysts, and it is hardly to intercalate into the layered double hydroxides (LDH) by ion-exchange process because of its low negative charge. In this work, a phosphotungstic acid intercalated MgAl-LDH (PWA-LDH) was prepared by reconstruction method, and it was then introduced into poly (lactic acid) (PLA) resin in association with intumescent fl...
http://www.polymer.cn//ss/zhangshengfrml/publicationsshow_13566.html |
| |
Effect of Zeolites on Morphology and Properties of Water-blown Semi-rigid Ammonium Polyphosphate Intumescent Flame-retarding Polyurethane Foam
ABSTRACT: Water-blown semi-rigid polyurethane foams (SPFs) were prepared by a one-shot, free-rise method. Effect of zeolites (ZEO) on morphology, flame retardancy, mechanical properties, damping properties, and thermal properties of ammonium polyphosphate (APP) intumescent flame-retarding SPFs was studied through the analysis of rotary viscosity test, limiting oxygen index (LOI), horizontal-vert...
http://www.polymer.cn//ss/zouhuawei/publicationsshow_13553.html |
| |