Synergistic Effects of Nano-Fillers on Halogen-Free Fire Retardant Polypropylene Composites

2015 ◽  
pp. 1097-1104
Author(s):  
Karnika De Silva ◽  
Sudip Ray ◽  
Mark Taylor ◽  
Debes Bhattacharyya
Keyword(s):  
Synergistic Effects ◽  
Fire Retardant ◽  
Polypropylene Composites ◽  
Halogen Free

Synergistic Effects of Nano-Fillers on Halogen-Free Fire Retardant Polypropylene Composites

2015 ◽  
pp. 1097-1104
Author(s):  
Karnika De Silva ◽  
Sudip Ray ◽  
Mark Taylor ◽  
Debes Bhattacharyya
Keyword(s):  
Synergistic Effects ◽  
Fire Retardant ◽  
Polypropylene Composites ◽  
Halogen Free

scholarly journals Effects of Graphene Nanoplatelets on Mechanical and Fire Performance of Flax Polypropylene Composites with Intumescent Flame Retardant

Molecules ◽  
2021 ◽  
Vol 26 (13) ◽  
pp. 4094
Author(s):  
Imran Ali ◽  
Nam Kyeun Kim ◽  
Debes Bhattacharyya
Keyword(s):  
Flame Retardant ◽  
Decomposition Rate ◽  
Natural Fiber ◽  
Fire Retardant ◽  
Graphene Nanoplatelets ◽  
Intumescent Flame Retardant ◽  
Fume Hood ◽  
Fire Dynamics ◽  
Polypropylene Composites ◽  
Set Up

The integration of intumescent flame-retardant (IFR) additives in natural fiber-based polymer composites enhances the fire-retardant properties, but it generally has a detrimental effect on the mechanical properties, such as tensile and flexural strengths. In this work, the feasibility of graphene as a reinforcement additive and as an effective synergist for IFR-based flax-polypropylene (PP) composites was investigated. Noticeable improvements in tensile and flexural properties were achieved with the addition of graphene nanoplatelets (GNP) in the composites. Furthermore, better char-forming ability of GNP in combination with IFR was observed, suppressing HRR curves and thus, lowering the total heat release (THR). Thermogravimetric analysis (TGA) detected a reduction in the decomposition rate due to strong interfacial bonding between GNP and PP, whereas the maximum decomposition rate was observed to occur at a higher temperature. The saturation point for the IFR additive along with GNP has also been highlighted in this study. A safe and effective method of graphene encapsulation within PP using the fume-hood set-up was achieved. Finally, the effect of flame retardant on the flax–PP composite has been simulated using Fire Dynamics Simulator.

The Analysis of Synergistic Effects of Zeolites applied in Intumescent Halogen-free Flame-retardant ABS Composites

2008 ◽  
Vol 47 (6) ◽  
pp. 613-618 ◽  
Author(s):  
Y. Xia ◽  
S. Liu ◽  
X. Wang ◽  
Y. Han ◽  
J. Li ◽  
...  
Keyword(s):  
Flame Retardant ◽  
Synergistic Effects ◽  
Halogen Free

HALOGEN FREE FIRE RETARDANT COMPOSITES FOR NAVAL APPLICATIONS

2000 ◽  
pp. 66-73
Author(s):  
Frédérique Le Lay ◽  
Joëlle Gutierrez
Keyword(s):  
Fire Retardant ◽  
Halogen Free

scholarly journals Self-Extinguishing Resin Transfer Molding Composites Using Non-Fire-Retardant Epoxy Resin

Materials ◽  
2018 ◽  
Vol 11 (12) ◽  
pp. 2554 ◽  
Author(s):  
Zhi Geng ◽  
Shuaishuai Yang ◽  
Lianwang Zhang ◽  
Zhenzhen Huang ◽  
Qichao Pan ◽  
...  
Keyword(s):  
Flame Retardant ◽  
Flame Retardants ◽  
Resin Transfer Molding ◽  
Fire Retardant ◽  
Functional Materials ◽  
Building Blocks ◽  
Fire Retardancy ◽  
Limiting Oxygen Index ◽  
Transfer Molding ◽  
Halogen Free

Introducing fire-retardant additives or building blocks into resins is a widely adopted method used for improving the fire retardancy of epoxy composites. However, the increase in viscosity and the presence of insoluble additives accompanied by resin modification remain challenges for resin transfer molding (RTM) processing. We developed a robust approach for fabricating self-extinguishing RTM composites using unmodified and flammable resins. To avoid the effects on resin fluidity and processing, we loaded the flame retardant into tackifiers instead of resins. We found that the halogen-free flame retardant, a microencapsulated red phosphorus (MRP) additive, was enriched on fabric surfaces, which endowed the composites with excellent fire retardancy. The composites showed a 79.2% increase in the limiting oxygen index, a 29.2% reduction in heat release during combustion, and could self-extinguish within two seconds after ignition. Almost no effect on the mechanical properties was observed. This approach is simple, inexpensive, and basically applicable to all resins for fabricating RTM composites. This approach adapts insoluble flame retardants to RTM processing. We envision that this approach could be extended to load other functions (radar absorbing, conductivity, etc.) into RTM composites, broadening the application of RTM processing in the field of advanced functional materials.

Fire retardant behaviour of halogen-free calcium-based hydrated minerals

2017 ◽  
Vol 136 ◽  
pp. 89-97 ◽  
Author(s):  
F. Laoutid ◽  
M. Lorgouilloux ◽  
L. Bonnaud ◽  
D. Lesueur ◽  
P. Dubois
Keyword(s):  
Fire Retardant ◽  
Free Calcium ◽  
Hydrated Minerals ◽  
Halogen Free
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