Flame retardant and mechanical properties of a copolymer PP/PE containing brominated compounds/antimony trioxide blends and magnesium hydroxide or talc

1997 ◽  
Vol 21 (6) ◽  
pp. 245-252 ◽  
Author(s):  
F. Montezin ◽  
J.-M. Lopez Cuesta ◽  
A. Crespy ◽  
P. Georlette
Keyword(s):  
Mechanical Properties ◽  
Flame Retardant ◽  
Magnesium Hydroxide ◽  
Antimony Trioxide ◽  
Brominated Compounds

Infrared Analysis on Pyrolysis Products of Flame Retardant Rigid Polyurethane Foam

2014 ◽  
Vol 1033-1034 ◽  
pp. 900-906
Author(s):  
Ze Jiang Zhang ◽  
Li Jun Li ◽  
Feng Li ◽  
Jin He ◽  
Zi Qiong Gan
Keyword(s):  
Flame Retardant ◽  
Polyurethane Foam ◽  
Magnesium Hydroxide ◽  
Hydrogen Cyanide ◽  
Flame Retardants ◽  
Fire Retardant ◽  
Infrared Analysis ◽  
Antimony Trioxide ◽  
Stretching Vibration ◽  
Flame Retarded

Infrared spectra of the pyrolysis gases of polyurethane foam flame retarded by MPOP, MP, MC, magnesium hydroxide, or antimony trioxide flame retardants was analyzed online by FTIR method. At 600°C, the polyurethane foam flame retarded by MPOP, MP, MC, magnesium hydroxide or antimony trioxide flame retardants released more hydrogen cyanide than the pure polyurethane foam, proved that the MPOP, MP, MC and magnesium hydroxide flame retardants could change the law that the polyurethane released hydrogen cyanide. At 600 °C, the peak of C=O stretching vibration at 1730cm-1did not appear for the flame-retardant polyurethane, indicating that the flame retardants can make the polyurethane rapidly carbonize and the fewer C=O intermediate was produced. The absorbent peaks of the fire-retardant samples at 1604cm-1, 1538 cm-1, 1250 to 1230 cm-1and 1450cm-1implied that the flame retardants could delay the oxidative decomposition of the polyurethane component at 600 °C, so that more components may be carbonized. When increasing the pyrolysis temperature, the perlite would make polyurethane foam release fewer hydrogen cyanide.

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.

Flame Retardancy in UL-94 V-0 and in UL-94 5VA High Impact Polystyrene

1997 ◽  
Vol 15 (5) ◽  
pp. 375-389 ◽  
Author(s):  
Lev Utevski ◽  
Michael Scheinker ◽  
Pierre Georlette ◽  
Shoshana Lach
Keyword(s):  
Flame Retardant ◽  
Magnesium Hydroxide ◽  
Flame Retardancy ◽  
High Impact ◽  
Antimony Trioxide ◽  
High Impact Polystyrene ◽  
Ul 94

The feasibility of producing HIPS of UL-94 5V flammability rating has been demonstrated. Results of TGA, XRD and SEM enable the role of such components as brominated organic flame retardant, antimony trioxide, chlorin ated polyethylene and magnesium hydroxide in flame retardancy of 5VA HIPS to be evaluated.

Utilization of Raw Gypsum as Hydrated Filler in Bagasse Particleboard Bonded with a Formaldehyde-Free Epoxidized Natural Rubber Adhesive

2012 ◽  
Vol 626 ◽  
pp. 44-49
Author(s):  
Bencha Thongnuanchan ◽  
Somporn Suwanpetch ◽  
Charoen Nakason
Keyword(s):  
Mechanical Properties ◽  
Natural Rubber ◽  
Flame Retardant ◽  
Burning Rate ◽  
Flame Retardancy ◽  
Flame Retardants ◽  
Modulus Of Rupture ◽  
Epoxidized Natural Rubber ◽  
Antimony Trioxide ◽  
Elapsed Time

The present study described the feasibility of using raw gypsum as filler to improve the flame retardant and mechanical properties of particleboard (PB) prepared from bagasse. The PB was made with a formaldehyde-free adhesive based on epoxidized natural rubber (ENR) latex via a hot pressing process. The effect of gypsum loading on the mechanical properties of the PB was initially investigated. Both the tensile strength and modulus of rupture (MOR) of the PB tended to increase with increasing gypsum loading and reached the maximum values at 150 phr. The incorporation of gypsum into the PB beyond this loading level brought about a decrease in the corresponding properties. A horizontal burning test was conducted to determine the flame retardant properties of the PB (i.e., elapsed time and burning rate). The PB containing 150 phr of gypsum (PB-150G) was found to have a much shorter elapsed time and a lower burning rate than the PB with no gypsum added. The lower values of the corresponding properties indicated the better flame retardancy of PB. It was also found that the PB-150G exhibited a comparable level of flame retardancy to the PB containing 8 wt% of total flame retardants (i.e., 5 wt% magnesium chloride in combination with 3 wt% antimony trioxide) based on the combined weight of bagasse and ENR contained in the PB. These results revealed that the use of an appropriate amount of gypsum as filler could significantly enhance the flame retardancy with considerable improvement in the mechanical properties of BP.

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