Synthesis of Co3 (HPO4 )2 (OH)2 nanosheets and its synergistic effect with intumescent flame retardants in ethylene-vinyl acetate copolymer

2016 ◽  
Vol 39 (1) ◽  
pp. 238-246 ◽  
Author(s):  
Jiajia Liu ◽  
Keqing Zhou ◽  
Gang Tang ◽  
Bibo Wang ◽  
Zhou Gui ◽  
...  
Keyword(s):  
Synergistic Effect ◽  
Vinyl Acetate ◽  
Flame Retardants ◽  
Ethylene Vinyl Acetate ◽  
Intumescent Flame Retardants ◽  
Acetate Copolymer ◽  
Ethylene Vinyl Acetate Copolymer

Thermal Degradation Behavior of Polypropylene and Ethylene Vinyl Acetate Copolymer Treated with Intumescent Flame Retardants Containing Caged Bicyclic Phosphates

2014 ◽  
Vol 936 ◽  
pp. 17-22
Author(s):  
Xin Li ◽  
Yu Xiang Ou
Keyword(s):  
Thermal Degradation ◽  
Vinyl Acetate ◽  
Flame Retardants ◽  
Ethylene Vinyl Acetate ◽  
Formation Mechanisms ◽  
Thermal Degradation Behavior ◽  
Flame Retarded ◽  
Intumescent Flame Retardants ◽  
Acetate Copolymer ◽  
Ethylene Vinyl Acetate Copolymer

Polypropylene (PP) and ethylene vinyl acetate copolymer (EVA) were treated with intumescent flame retardants containing caged bicyclic phosphates. The behavior of thermal degradation of the flame-retarded PP and EVA were studied by TG, DSC, and the FTIR spectra of PP’s residues at different temperature were recorded. In addition, the possible thermal degradation and char formation mechanisms were analyzed and discussed.

scholarly journals Enhanced Flame Retardancy in Ethylene–Vinyl Acetate Copolymer/Magnesium Hydroxide/Polycarbosilane Blends

Polymers ◽  
2021 ◽  
Vol 14 (1) ◽  
pp. 36
Author(s):  
Tiefeng Zhang ◽  
Chunfeng Wang ◽  
Yongliang Wang ◽  
Lijun Qian ◽  
Zhidong Han
Keyword(s):  
Synergistic Effect ◽  
Flame Retardant ◽  
Vinyl Acetate ◽  
Magnesium Hydroxide ◽  
Ethylene Vinyl Acetate ◽  
Infrared Spectrometry ◽  
Limiting Oxygen Index ◽  
Blending Method ◽  
Acetate Copolymer ◽  
Ethylene Vinyl Acetate Copolymer

A polymer ceramic precursor material—polycarbosilane (PCS)—was used as a synergistic additive with magnesium hydroxide (MH) in flame-retardant ethylene–vinyl acetate copolymer (EVA) composites via the melt-blending method. The flame-retardant properties of EVA/MH/PCS were evaluated by the limiting oxygen index (LOI) and a cone calorimeter (CONE). The results revealed a dramatic synergistic effect between PCS and MH, showing a 114% increase in the LOI value and a 46% decrease in the peak heat release rate (pHRR) with the addition of 2 wt.% PCS to the EVA/MH composite. Further study of the residual char by scanning electron microscopy (SEM) proved that a cohesive and compact char formed due to the ceramization of PCS and close packing of spherical magnesium oxide particles. Thermogravimetric analysis coupled with Fourier-transform infrared spectrometry (TG–FTIR) and pyrolysis–gas chromatography coupled with mass spectrometry (Py–GC/MS) were applied to investigate the flame-retardant mechanism of EVA/MH/PCS. The synergistic effect between PCS and MH exerted an impact on the thermal degradation products of EVA/MH/PCS, and acetic products were inhibited in the gas phase.

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