Measurement of V50 Behavior of a Nylon 6-Based Polymer-Layered Silicate Nanocomposite

2001 ◽  
Author(s):  
David Ostermayer ◽  
Frederick L. Beyer ◽  
Peter G. Dehmer ◽  
Melissa A. Klusewitz
Keyword(s):  
Layered Silicate ◽  
Nylon 6

Thermal transitions of the drawn film of a nylon 6/layered silicate nanocomposite

2005 ◽  
Vol 13 (2) ◽  
pp. 156-161 ◽  
Author(s):  
Soo-Young Park ◽  
Yang-Hwan Cho
Keyword(s):  
Layered Silicate ◽  
Nylon 6 ◽  
Thermal Transitions

Condensed-phase flame retardation in nylon 6-layered silicate nanocomposites: Films, fibers, and fabrics

2008 ◽  
Vol 48 (4) ◽  
pp. 662-675 ◽  
Author(s):  
Kadhiravan Shanmuganathan ◽  
Sarang Deodhar ◽  
Nicholas A. Dembsey ◽  
Qinguo Fan ◽  
Prabir K. Patra
Keyword(s):  
Condensed Phase ◽  
Layered Silicate ◽  
Nylon 6 ◽  
Silicate Nanocomposites ◽  
Flame Retardation

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

scholarly journals Fire Retardancy and Morphology of Nylon 6-Clay Nanocomposite Compositions

2005 ◽  
Vol 887 ◽  
Author(s):  
Kadhiravan Shanmuganathan ◽  
Sandeep Razdan ◽  
Nick Dembsey ◽  
Quinguo Fan ◽  
Yong K Kim ◽  
...  
Keyword(s):  
Mass Loss Rate ◽  
Layered Silicate ◽  
Nylon 6 ◽  
Decomposition Temperature ◽  
Nanocomposite Films ◽  
Zinc Borate ◽  
Additive Concentration ◽  
Nanocomposite Sample ◽  
Cone Calorimeter Test ◽  
Burn Rate

ABSTRACTWe investigated the effect of organically modified clay on the thermal and flammability behavior of nylon 6 nanocomposites. We also used zinc borate along with layered silicate with an aim of achieving synergistic effect in flame retardancy. It is found that addition of 10 wt% clay reduced the onset decomposition (5% wt loss) temperature of nylon 6 by 20°C, while addition of 5 wt% zinc borate and 5 wt% clay in combination reduced it by around 10°C. Differential thermogravimetric analysis indicated that the peak decomposition temperature was not affected by the addition of clay, but the rate of weight loss decreased with increasing clay concentration. The horizontal burning behavior of the nanocomposite films of approximately 0.5mm thickness changed with additive concentration. The nanocomposites with 2.5 wt% and 5 wt% clay burned for almost the same duration as neat nylon 6 but dripping was reduced. The 10 wt% clay nanocomposite sample burned without any dripping and the flame spread rate was reduced by 25-30%. The burn rate of 5 wt % zinc borate/5 wt% clay nanocomposite sample was about 20% higher than that of 10 wt% clay nanocomposite sample, which could be attributed to varying char morphology. Scanning electron microscopy images of the 10wt% clay nanocomposite char surface and cross- section revealed an integrated layer of clay platelets with increasing density gradient from the center to the surface, while the 5 wt% zinc borate/5 wt% clay nanocomposite char appeared foamy and porous. The 5 wt% zinc borate and 5 wt% clay sample developed into a very good intumescent system in cone calorimeter test, swelling about 10-13mm height prior to ignition forming a cellular char structure. This was as effective as the 10wt% clay nanocomposite sample in reducing the heat release and mass loss rate of nylon 6 by around 65%. Fourier transform infrared spectroscopy of the 10 wt% clay nanocomposite char showed the presence of amides, indicating possible residual polymer within the shielded char.

Fabrication and Properties of Nylon-6/Layered Silicate Nanocomposites by Melt Blending

2008 ◽  
Author(s):  
Walid Awad ◽  
Amal Esawi ◽  
Adham Ramadan
Keyword(s):  
Layered Silicate ◽  
Nylon 6 ◽  
Polymer Materials ◽  
Melt Blending ◽  
Single Screw Extrusion ◽  
Transmission Electron ◽  
Onium Salts ◽  
Wide Range ◽  
Screw Extrusion ◽  
Clay Layers

Polymer/clay nanocomposites currently attract immense interest from both research and industrial communities. By dispersing at the molecular level a tiny amount of clay within a polymeric matrix, a wide range of properties can be significantly improved. The efficiency of the clay (layered silicate) in improving the properties of the polymer materials is primarily determined by the degree of its dispersion in the polymer matrix. To promote the molecular and stable dispersion of the clay layers, the clays should be organically-modified with onium salts. In this work, nylon-6 nanocomposites based on two types of commercial organoclays were prepared by melt blending via single-screw extrusion. The good dispersion of clay in the nylon-6 nanocomposites was confirmed by X-ray diffraction and transmission electron microscopy. The influence of the dispersed nano-clay fillers on the thermal and mechanical properties of the resulting nanocomposites was characterized using thermogravimetric analysis and nanoindentation.

scholarly journals Crystal Structure of Nylon 6/Inorganic Layered Silicate Nanocomposite Film.

2000 ◽  
Vol 57 (7) ◽  
pp. 433-439 ◽  
Author(s):  
Koji FUJIMOTO ◽  
Masaki YOSHIKAWA ◽  
Shinichiro KATAHIRA ◽  
Kenji YASUE
Keyword(s):  
Crystal Structure ◽  
Nanocomposite Film ◽  
Layered Silicate ◽  
Nylon 6

Nylon-6 and Montmorillonite-Layered Silicate (MLS) Nanocomposites

2003 ◽  
Vol 19 (4) ◽  
pp. 271-285 ◽  
Author(s):  
Ajit Ranade ◽  
Nandika Anne D’Souza ◽  
Bruce Gnade ◽  
Amit Dharia
Keyword(s):  
Layered Silicate ◽  
Nylon 6

Study on the Structure and Properties of the Low Melting Point of Nylon 6 Modified by Organic Montmorillonite

2013 ◽  
Vol 423-426 ◽  
pp. 301-306 ◽  
Author(s):  
Min Zhang ◽  
Sheng Jun Lu ◽  
Jie Yu ◽  
En Hui Xu ◽  
Min He ◽  
...  
Keyword(s):  
Melting Point ◽  
Crystallization Behavior ◽  
Layered Silicate ◽  
Polyamide 6 ◽  
Nylon 6 ◽  
Complexation Reaction ◽  
Structure Property ◽  
Organic Montmorillonite ◽  
The Matrix ◽  
Twin Screw

The Lower-melting point polyamide-6 (LPA6),with the melting point of 198°C,were a produced in a corotating twin screw extruder. The low melting point PA6/Organic montmorillonite (OMMT) composites were obtained by the method of melt extrusion.The effect of the content of OMMT on melting, morphology, crystallization behavior,mechanical properties of the composites was investigated by TEM, DSC, XRD. This work deals with combination of both components, which are the structure-property relationship of polymer/layered silicate nanocomposites, and the effects of complexation reaction on the montmorillonite dispersion in the matrix. Results showed that the complexation reaction have little effects on the exfoliation and dispersion of OMMT, and completely exfoliated with the content of OMMT was 5wt%.But it have significantly effects on the crystallization behavior of nylon 6,lead to the decraresd of the crystallinity. It was demonstrated that OMMT has a higher exfoliation degree lead to a balanced and enhanced mechanical behaviour.

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