Flammability and thermal degradation behavior of ethylene-vinyl acetate/layered double hydroxides/zinc borate composites

2016 ◽  
Vol 28 (3) ◽  
pp. 353-361 ◽  
Author(s):  
Yi Qian ◽  
Shaojie Zhou ◽  
Xilei Chen
Keyword(s):  
Thermal Degradation ◽  
Vinyl Acetate ◽  
Layered Double Hydroxides ◽  
Ethylene Vinyl Acetate ◽  
Zinc Borate ◽  
Degradation Behavior ◽  
Thermal Degradation Behavior ◽  
Double Hydroxides

scholarly journals Improving the flame retardancy of ethylene vinyl acetate composites by incorporating layered double hydroxides based on Bayer red mud

e-Polymers ◽  
2019 ◽  
Vol 19 (1) ◽  
pp. 129-140 ◽  
Author(s):  
Yi Qian ◽  
Kangjia Jiang ◽  
Long Li
Keyword(s):  
Vinyl Acetate ◽  
Flame Retardancy ◽  
Layered Double Hydroxides ◽  
Red Mud ◽  
Ethylene Vinyl Acetate ◽  
Precipitation Method ◽  
Infrared Spectrometry ◽  
Cone Calorimeter Test ◽  
Bayer Red Mud ◽  
Double Hydroxides

AbstractNowadays, reducing the hazards of bayer red mud (BRM) is an important research direction in the fields of environmental and safety. In this article, Mg/Al/Fe ternary layered double hydroxides (Mg/Al/Fe-LDHs) were synthesized successfully by a co-precipitation method based on introducing Mg2+ into the BRM suspension. The thermogravimetric analysis (TGA) results showed that the decomposition rate of LDHs is higher than that of BRM, which indicates that LDHs can absorb more heat than BRM during the decomposition process. Subsequently, BRM and LDHs were added into the ethylene vinyl acetate (EVA) to investigate its effects on reducing flammability of the composites. The cone calorimeter test (CCT) results demonstrated that 50 wt% LDH-B can make the peak value of HRR (PHRR) decrease from 1694.8 kW/m2 (EVA) to 199.2 kW/m2 (ELDH2). The smoke density test (SDT) results showed that the luminous flux of ELDH2 is nearly 95% at the end of test with a pilot flame, which is much higher than that of EVA and EBRM. The thermogravimetry-Fourier transform infrared spectrometry (TG-FTIR) results confirmed that LDHs can improve the thermal stability of composites and reduce the production of some toxic gases. Compared with BRM, the improved flame retardancy of Mg/Al/Fe-LDHs is ascribed to the introduction of Mg2+, which offering an enhanced catalytic carbonization capability, as well as the physical barrier effect of char residue layer catalyzed by the lamellar LDHs

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 Synthesis and characterization of two-component acidic ion intercalated layered double hydroxide and its use as a nanoflame-retardant in ethylene vinyl acetate copolymer (EVA)

RSC Advances ◽  
2017 ◽  
Vol 7 (84) ◽  
pp. 53064-53075 ◽  
Author(s):  
Xiuhua Zhou ◽  
Hong Chen ◽  
Qinghua Chen ◽  
Qidan Ling
Keyword(s):  
Vinyl Acetate ◽  
Layered Double Hydroxides ◽  
Ethylene Vinyl Acetate ◽  
Synthesis And Characterization ◽  
Two Component ◽  
Double Hydroxide ◽  
Double Hydroxides ◽  
Acetate Copolymer ◽  
Ethylene Vinyl Acetate Copolymer

A series of two-component acidic ion intercalated layered double hydroxides (MgAlZn-X1/X2-LDHs) were synthesized by coprecipitation under microwave crystallization, and were further used as novel nanoflame-retardants for ethylene vinyl acetate (EVA).

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