Flame retardant and mechanical properties of polyethylene/magnesium hydroxide/montmorillonite nanocomposites

2014 ◽  
Vol 20 (4) ◽  
pp. 2401-2408 ◽  
Author(s):  
Sung-Po Liu
Keyword(s):  
Mechanical Properties ◽  
Flame Retardant ◽  
Magnesium Hydroxide ◽  
Montmorillonite Nanocomposites

scholarly journals Basalt Fiber Modified Ethylene Vinyl Acetate/Magnesium Hydroxide Composites with Balanced Flame Retardancy and Improved Mechanical Properties

Polymers ◽  
2020 ◽  
Vol 12 (9) ◽  
pp. 2107
Author(s):  
Dongwei Yao ◽  
Guangzhong Yin ◽  
Qingqing Bi ◽  
Xu Yin ◽  
Na Wang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Flame Retardant ◽  
Vinyl Acetate ◽  
Magnesium Hydroxide ◽  
Performance Enhancement ◽  
Basalt Fiber ◽  
Ethylene Vinyl Acetate ◽  
Limiting Oxygen Index ◽  
Cone Calorimeter Test ◽  
Flame Retardant Properties

In this study, we selected basalt fiber (BF) as a functional filler to improve the mechanical properties of ethylene vinyl acetate (EVA)-based flame retardant materials. Firstly, BF was modified by grafting γ-aminopropyl triethoxysilane (KH550). Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), scanning electron microscope (SEM), and energy dispersive X-ray spectroscopy (EDS) were used to comprehensively prove the successful modification of the BF surface. Subsequently, the modified BF was introduced into the EVA/magnesium hydroxide (MH) composites by melt blending. The limiting oxygen index (LOI), UL-94, cone calorimeter test, tensile test, and non-notched impact test were utilized to characterize both the flame retardant properties and mechanical properties of the EVA/MH composites. It was found that the mechanical properties were significantly enhanced without reducing the flame retardant properties of the EVA/MH composites. Notably, the surface treatment with silane is a simple and low-cost method for BF surface modification and the pathway designed in this study can be both practical and effective for polymer performance enhancement.

The Optimum Technological Parameters and Properties of LDPE/LLDPE/Nano-Mg(OH)2 Systems

2011 ◽  
Vol 239-242 ◽  
pp. 437-440 ◽  
Author(s):  
Yu Hua Guo ◽  
Jian Jun Guo ◽  
Zhen Huang ◽  
Li Jun Teng
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Impact Strength ◽  
Flame Retardant ◽  
Young’S Modulus ◽  
Magnesium Hydroxide ◽  
Rotational Speed ◽  
Technological Parameters ◽  
Technological Route ◽  
Pressure Changes

Nano-structured magnesium hydroxide (nano-MH) has been added into LDPE/LLDPE, the technological parameters, flame and mechanical properties, M.F.R. of LDPE/LLDPE/nano-MH samples have been examined. It is indicated two time extruder pelletization is a good technological route, which can make nano-MH disperse evenly in PE. The optimum rotational speed of screws changes from 37 to 42 rad/min, the die pressure changes from 35 to 61.5 bar. Nano-MH has good flame retardant and smoke suppressing properties. The samples added 60% nano-MH can reach UL94 FV-0 flame retardant rating. When nano-MH content is more than 40%, no smoke emits. With nano-MH content increases, the tensile strength, impact strength, elongation and M.F.R decreases, Young’s modulus increases.

Magnesium hydroxide sulfate hydrate whisker flame retardant polyethylene/montmorillonite nanocomposites

2006 ◽  
Vol 41 (2) ◽  
pp. 363-367 ◽  
Author(s):  
Hongdian Lu ◽  
Yuan Hu ◽  
Junfeng Xiao ◽  
Zhengzhou Wang ◽  
Zuyao Chen ◽  
...  
Keyword(s):  
Flame Retardant ◽  
Magnesium Hydroxide ◽  
Sulfate Hydrate ◽  
Montmorillonite Nanocomposites ◽  
Magnesium Hydroxide Sulfate Hydrate

Studies on the flame retardant, mechanical and thermal properties of ternary magnesium hydroxide/clay/EVA nanocomposites

2011 ◽  
Vol 44 (3) ◽  
pp. 251-261 ◽  
Author(s):  
A. Ahamad ◽  
C. B. Patil ◽  
P. P. Mahulikar ◽  
D. G. Hundiwale ◽  
V. V. Gite
Keyword(s):  
Mechanical Properties ◽  
Flame Retardant ◽  
Magnesium Hydroxide ◽  
Ethylene Vinyl Acetate ◽  
Tensile Tests ◽  
Mechanical And Thermal Properties ◽  
Melt Blending ◽  
X Ray Diffraction ◽  
Flame Retardant Properties ◽  
Acetate Copolymer

Ethylene vinyl acetate copolymer (EVA) nanocomposites were prepared by melt blending of EVA with nano-sized magnesium hydroxide [Mg(OH)2] and modified montmorilonite clay. Nano Mg(OH)2 was synthesized in the laboratory by matrix-mediated growth and controlled technique. Particle size of Mg(OH)2 crystals was performed using X-ray diffraction technique and was found to be in nanometer range. Ternary EVA, clay and Mg(OH)2 nanocomposites were prepared by melt blending using Brabender Plastograph EC. The prepared samples were characterized by flame test, tensile tests and thermogravimetric analysis (TGA). Morphological study of the composites was studied by scanning electron microscopy (SEM). Flame retardant properties of samples were significantly improved in the EVA/clay/Mg(OH)2 nanocomposites without losing its mechanical properties. Ternary system showed better thermal, flame retardant and mechanical properties compared with nanocomposites of EVA filled only with the nano Mg(OH)2.

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