Flame-retardant Polyamide 11 and 12 Nanocomposites: Processing, Morphology, and Mechanical Properties

Lao, S.; Wang, Yong; Nguyen, Khiet; Moon, Tessie J; Koo, Joseph H.; Pilato, Louis A.; Wissler, G.

doi:10.1177/0021998310369580

Cited by 45 publications

(45 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…All formulations were processed using a ThermoScientific Process 11 parallel co-rotating twin screw extruder (L/D=40). The co-rotating twin screw extruder provides high shear mixing which ensures proper dispersion of the nano-fillers [20]. Materials were melted and mixed at 240 o C, with screw speed at 150 rpm.…”

Section: Compoundingmentioning

confidence: 99%

Self-Extinguishing and Non-Drip Flame Retardant Polyamide 6 Nanocomposite: Mechanical, Thermal, and Combustion Behavior

Ortiz

Correa

et al. 2018

Flame Retardancy and Thermal Stability of Materials

View full text Add to dashboard Cite

Incorporation of flame-retardant (FR) additives and nanoclay fillers into thermoplastic polymers effectively suppresses materials flammability and melt dripping behavior. However, it largely affects other properties, such as toughness and ductility. In order to recover the lost toughness and ductility of flame retardant polyamide 6, various loadings of maleic anhydride modified SEBS elastomer were added and processed by twin screw extrusion. TEM images showed exfoliated nanoclay platelets and reveals that the clay platelets well dispersed in the polymer matrix. By balancing the ratio of flame retardants, nanoclay and elastomers, formulation with elongation at break as high as 76% was achieved. Combining conventional intumescent FR and nanoclay, UL-94 V-0 rating and the LOI value as high as 32.2 were achieved. In conclusion, effective self-extinguishing and non-drip polyamide 6 nanocomposite formulations with significant improvement in toughness and ductility were achieved.

show abstract

Section: Compoundingmentioning

confidence: 99%

Self-Extinguishing and Non-Drip Flame Retardant Polyamide 6 Nanocomposite: Mechanical, Thermal, and Combustion Behavior

Ortiz

Correa

et al. 2018

Flame Retardancy and Thermal Stability of Materials

View full text Add to dashboard Cite

show abstract

“…New flame retardant approaches for polymer materials have been developed using nanoadditives [4][5][6]. To date, many researches focus on nanoclay [7,8], carbon nanotubes [9,10], carbon nanofibers [11,12], graphene [13,14], nano silica [15,16], and polyhedral oligomeric silsesquioxanes [17]. Generally, the addition of inorganic nanoadditives to polymer materials results in the following: (i) the ability to promote flame retardancy and thermal stability of a polymer at very low filling levels, (ii) significant improvement to the physical properties of the polymer rather than degradation, (iii) no environmental or toxicity problem, and (iv) no obvious increase in the weight of the polymer materials.…”

Section: Introductionmentioning

confidence: 99%

Flame Retardancy Effects of Graphene Nanoplatelet/Carbon Nanotube Hybrid Membranes on Carbon Fiber Reinforced Epoxy Composites

Zhuo

Wang

et al. 2013

Journal of Nanomaterials

View full text Add to dashboard Cite

Carbon nanotube/graphene nanoplatelet (MWCNT/GNP) hybrid membranes with lower liquid permeability and better barrier effect compared to MWCNT membranes were successfully synthesized by vacuum filtering. Their morphologies, water permeability, and pore structures were characterized by a scanning electron microscope (SEM) and nitrogen adsorption isotherms. Furthermore, MWCNT/GNP membranes were used to improve the flame retardancy of carbon fiber reinforced polymer (CFRP) composites, and the influence of weight percentage of GNPs on the permeability and flame retardancy of MWCNT/GNP membranes was systematically investigated. Results show that incorporation of MWCNT/GNP membranes on CFRP composite plates can remarkably improve the flame retardancy of CFRP composites. Specifically, the incorporation of hierarchical MWCNT/GNP membrane with 7.5 wt% of GNP displays a 35% reduction in the peak heat release rate (PHRR) for a CFRP composite plate with the epoxy as matrix and a 11% reduction in PHRR compared with the incorporation of MWCNT membrane only. A synergistic flame retarding mechanism is suggested to be attributed to these results, which includes controlling the pore size and penetrative network structure.

show abstract

“…When 0.1wt% MWCNTs resin was used, tensile strength increased by 7.5% while the fracture stress increased by 33%. Bai et al [66] investigated an experiment on metal nanoparticles. They created a silver nano suspension by mixing silver nanoparticles of diameter 30nm and binder solution.…”

Section: Nanocomposites Using Additive Manufacturingmentioning

confidence: 99%

A Review on Properties of Aerospace Materials Through Additive Manufacturing

2017

IJMTER

View full text Add to dashboard Cite

Abstract-Additive Manufacturing (AM) process has been effective in producing materials that are being utilized by the aerospace industry in order to improve their performance by increasing their properties. Industry now opts for this technique over conventional methods as it has enormous advantages and applications. This Additive Manufacturing process is capable of producing complex near net shape of parts. The materials that are produced by this technique for aerospace industries are metal alloys, metal matrix composites, polymer matrix composites, ceramic matrix composites and nano-composites. Many of the composite materials are still under research and development. In this study, a literature review on the mechanical properties of the materials that are used in the aerospace industry by AM process is discussed and these properties are also compared with the materials produced by conventional methods. The purpose of this review is to highlight the importance of Additive Manufacturing technique and also understand the effect of this process on the materials tested. During this work, the evolution of materials in the aerospace sector, the basic concept of AM technique, the application of the materials, the properties obtained when processing is done, the limitations and the scope for research are given.

show abstract

Flame-retardant Polyamide 11 and 12 Nanocomposites: Processing, Morphology, and Mechanical Properties

Cited by 45 publications

References 36 publications

Self-Extinguishing and Non-Drip Flame Retardant Polyamide 6 Nanocomposite: Mechanical, Thermal, and Combustion Behavior

Self-Extinguishing and Non-Drip Flame Retardant Polyamide 6 Nanocomposite: Mechanical, Thermal, and Combustion Behavior

Flame Retardancy Effects of Graphene Nanoplatelet/Carbon Nanotube Hybrid Membranes on Carbon Fiber Reinforced Epoxy Composites

A Review on Properties of Aerospace Materials Through Additive Manufacturing

Contact Info

Product

Resources

About