Experimental and quantitative assessment of flame retardancy by the shielding effect in layered silicate epoxy nanocomposites

2012 ◽  
Vol 159 (12) ◽  
pp. 3616-3623 ◽  
Author(s):  
Guang Mei Wu ◽  
Bernhard Schartel ◽  
Horst Bahr ◽  
Malte Kleemeier ◽  
Dan Yu ◽  
...  
Keyword(s):  
Flame Retardancy ◽  
Quantitative Assessment ◽  
Layered Silicate ◽  
Shielding Effect ◽  
Epoxy Nanocomposites

Compatible cyclophosphazene-functionalized graphene hybrids to improve flame retardancy for epoxy nanocomposites

2020 ◽  
Vol 155 ◽  
pp. 104697
Author(s):  
Lijie Qu ◽  
Yanlong Sui ◽  
Chunling Zhang ◽  
Peihong Li ◽  
Xueyan Dai ◽  
...  
Keyword(s):  
Flame Retardancy ◽  
Functionalized Graphene ◽  
Epoxy Nanocomposites

scholarly journals Improving flame retardancy of in-situ silica-epoxy nanocomposites cured with aliphatic hardener: Combined effect of DOPO-based flame-retardant and melamine

2020 ◽  
Vol 2 ◽  
pp. 100022
Author(s):  
Aurelio Bifulco ◽  
Dambarudhar Parida ◽  
Khalifah A. Salmeia ◽  
Sandro Lehner ◽  
Rolf Stämpfli ◽  
...  
Keyword(s):  
Flame Retardant ◽  
Flame Retardancy ◽  
Combined Effect ◽  
Epoxy Nanocomposites ◽  
In Situ Silica

Hydrated and anhydrous zinc borate fillers for tuning the flame retardancy of epoxy nanocomposites

2020 ◽  
Vol 137 (34) ◽  
pp. 48987 ◽  
Author(s):  
Dhiraj S. Mahajan ◽  
Tushar D. Deshpande ◽  
Mahendra L. Bari ◽  
Ujwal D. Patil ◽  
Jitendra S. Narkhede
Keyword(s):  
Flame Retardancy ◽  
Zinc Borate ◽  
Epoxy Nanocomposites

Influence of silicon dioxide addition and processing methods on structure, thermal stability and flame retardancy of EVA/NR blend nanocomposite foams

2020 ◽  
pp. 147776062095343
Author(s):  
Alif Walong ◽  
Bencha Thongnuanchan ◽  
Tadamoto Sakai ◽  
Natinee Lopattananon
Keyword(s):  
Thermal Stability ◽  
Silicon Dioxide ◽  
Flame Retardant ◽  
Flame Retardancy ◽  
Layered Silicate ◽  
Melt Mixing ◽  
Limiting Oxygen Index ◽  
Char Layer ◽  
Nanocomposite Foams ◽  
Silicon Based

Rubber nanocomposite foams based on 60/40 ethylene vinyl acetate (EVA)/natural rubber (NR) were melt-mixed with flame retardant silicon dioxide (SiO2) (20 parts per hundred rubber, phr), and foamed by compression molding process. In this study, the effect of mixing phenomena of SiO2 through two different compounding techniques such as direct mixing (DM) and phase selective mixing (PSM) methods on structure, thermal stability, combustility and flame retardancy of EVA/NR blend nanocomposite foams were investigated. DM method is a melt mixing of EVA, NR, layered silicate and SiO2, followed by foaming. PSM is a new method based on pre-mixing EVA with SiO2, then melt mixing of EVA/SiO2 masterbatch with NR and layered silicate, and finally foaming. Based on TEM technique, it was found that the SiO2 was exclusively located in dispersed NR phase for the sample prepared by DM method, and the SiO2 was preferably dispersed in continuous EVA matrix when PSM method was employed. However, the different mixing methods did not significantly alter their cellular structures. The thermal stability and char residue content of foamed samples with SiO2 increased obviously when compared with those of corresponding foams without SiO2. The results based on limiting oxygen index (LOI) test and oxygen bomb calorimetry indicated that the foams combined with SiO2 had better combustion resistance and flame retardancy due to barrier effect of thermally stable silicon-based char layer. Further, the SiO2 filled foamed system obtained from the PSM method showed a higher degree of improvement in thermal stability, combustion resistance and flame retardancy than that of DM method because the homogeneous dispersion of SiO2 in EVA matrix rather than the selective dispersion in NR phase. This resulted in the continuity of flame retardant EVA/SiO2 phase in the 60/40 EVA/NR nanocomposite foams, which exerted more efficient fire barrier of the silicon-based char layer.

E-beam-cured layered-silicate and spherical silica epoxy nanocomposites

2007 ◽  
Vol 106 (3) ◽  
pp. 2132-2139 ◽  
Author(s):  
Chenggang Chen ◽  
David P. Anderson
Keyword(s):  
Layered Silicate ◽  
Epoxy Nanocomposites ◽  
Spherical Silica

Flame retardancy and char microstructure of nylon-6/layered silicate nanocomposites

2007 ◽  
Vol 104 (3) ◽  
pp. 1540-1550 ◽  
Author(s):  
Kadhiravan Shanmuganathan ◽  
Sarang Deodhar ◽  
Nicholas Dembsey ◽  
Qinguo Fan ◽  
Paul D. Calvert ◽  
...  
Keyword(s):  
Flame Retardancy ◽  
Layered Silicate ◽  
Nylon 6 ◽  
Silicate Nanocomposites

Synthesis and Characterization of Layered Silicate-Epoxy Nanocomposites

1994 ◽  
Vol 6 (10) ◽  
pp. 1719-1725 ◽  
Author(s):  
Phillip B. Messersmith ◽  
Emmanuel P. Giannelis
Keyword(s):  
Layered Silicate ◽  
Synthesis And Characterization ◽  
Epoxy Nanocomposites

Factors Influencing the Morphology Development of Epoxy Nanocomposites

2006 ◽  
Author(s):  
Chenggang Chen
Keyword(s):  
High Performance ◽  
Layered Silicate ◽  
Aromatic Diamine ◽  
Epoxy Nanocomposites ◽  
Epoxy Nanocomposite ◽  
Molecular Weights ◽  
X Ray Scattering ◽  
Factors Influencing ◽  
Morphology Development

Polymer nanocomposites draw great interest due to their unique nanostructures and improved properties [1–2]. Epoxy is a widely-used thermosetting material. The research on the epoxy layered-silicate epoxy nanocomposite has exploded in the last decade [3–9]. The morphology of nanocomposites is the key to making high-performance nanocomposites. In this presentation, the factors influencing the morphology development behavior of epoxy nanocomposites will be discussed. The factors to be investigated include organoclay, epoxide, and curing agent. In this study, the aliphatic diamine (Jeffamines) with different molecular weights and aromatic diamine were selected as the curing agents, S30B (quaternary onium-montmorillonite) and SC18 (primary oniummont-morillonite) as the organoclays, and Epon 862 and Epon 828 as epoxides. In situ small-angle x-ray scattering (SAXS) was utilized to study the morphology development of the epoxy nanocomposite.

An overview of multifunctional epoxy nanocomposites

2016 ◽  
Vol 4 (25) ◽  
pp. 5890-5906 ◽  
Author(s):  
Hongbo Gu ◽  
Chao Ma ◽  
Junwei Gu ◽  
Jiang Guo ◽  
Xingru Yan ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Flame Retardancy ◽  
The State ◽  
Epoxy Nanocomposites ◽  
State Of Art

The state-of-art multifunctions of epoxy nanocomposites including magnetization, electrical and thermal conductivity and flame retardancy are critically reviewed.

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