scholarly journals EG/TPU composites with enhanced flame retardancy and mechanical properties prepared by microlayer coextrusion technology

RSC Advances ◽  
2019 ◽  
Vol 9 (41) ◽  
pp. 23944-23956 ◽  
Author(s):  
Chao Zhang ◽  
Meinong Shi ◽  
Youchen Zhang ◽  
Weimin Yang ◽  
Zhiwei Jiao ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Flame Retardancy ◽  
Thermoplastic Polyurethane ◽  
Expandable Graphite ◽  
Two Dimensional ◽  
Plane Orientation ◽  
Dimensional Plane

In this work, expandable graphite (EG)/thermoplastic polyurethane (TPU) composites with excellent exfoliation, dispersion and two-dimensional plane orientation of the EG fillers were manufactured by microlayer coextrusion technology.

scholarly journals Simultaneously enhanced mechanical properties and flame retardancy of UHMWPE with polydopamine-coated expandable graphite

RSC Advances ◽  
2019 ◽  
Vol 9 (37) ◽  
pp. 21371-21380 ◽  
Author(s):  
Huaming Wang ◽  
Jingshi Cao ◽  
Fubin Luo ◽  
Changlin Cao ◽  
Qingrong Qian ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Polymer Composites ◽  
Flame Retardancy ◽  
Expandable Graphite

The potential prospect of expandable graphite (EG) in the development of polymer composites is severely limited by required large additions and poor interface compatibility with the polymer.

scholarly journals Modification and Compounding of CaMgAl-Layered Double Hydroxides and Their Application in the Flame Retardance of Acrylonitrile-Butadiene-Styrene Resin

Polymers ◽  
2019 ◽  
Vol 11 (10) ◽  
pp. 1623 ◽  
Author(s):  
Bai-nian Wang ◽  
Ming-yang Chen ◽  
Bao-jun Yang
Keyword(s):  
Mechanical Properties ◽  
Particle Size ◽  
Flame Retardancy ◽  
Layered Double Hydroxides ◽  
Acrylonitrile Butadiene Styrene ◽  
Expandable Graphite ◽  
Gravimetric Analysis ◽  
Limiting Oxygen Index ◽  
Double Hydroxides ◽  
Butadiene Styrene

CaMgAl-layered double hydroxides (CaMgAl-LDHs) were synthesized by a co-precipitation method to prepare sodium oleate-modified, borate-intercalated CaMgAl-LDHs (O-CaMgAl-LDHs) using in-situ intercalation and modification, and the LDHs samples were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), field emission scanning electron microscopy (FESEM), and thermal gravimetric analysis (TGA). The FESEM observations showed that the as-prepared CaMgAl-LDHs had a lamellar structure with a particle size of 200~500 nm, while the O-CaMgAl-LDHs had a plate-like structure with a particle size of about 100 nm. TGA showed that O-CaMgAl-LDHs resulted in higher thermal stability at high temperature compared to CaMgAl-LDHs. O-CaMgAl-LDHs/ABS composites were prepared by adding O-CaMgAl-LDHs to acrylonitrile-butadiene-styrene resin (ABS) to test the resulting flame retardancy and mechanical properties, and the results showed that the limiting oxygen index (LOI) could increase from 18% to 26%, while the mechanical properties decreased significantly when the added fraction was 40% (relative to ABS). O-CaMgAl-LDHs, ammonium polyphosphate (APP) and expandable graphite (EG) were added into the ABS to prepare ABS composites, and the effects of different compositions on the flame retardancy and mechanical properties of the ABS composites were investigated. The results showed that, when adding 5 g of O-CaMgAl-LDHs, 1 g of APP, and 14 g of EG into 40 g of ABS, the LOI of the ABS composite reached 28.8%, and the composite prepared could meet the V-0 grade requirements of the UL-94 combustion test, while the flexural strength decreased only 21.9% compared to pure ABS, the smallest decrease compared to all of the other composites.

Impact of expandable graphite on flame retardancy and mechanical properties of rigid polyurethane foam

2018 ◽  
Vol 40 (S2) ◽  
pp. E1705-E1715 ◽  
Author(s):  
Pablo Acuña ◽  
Mercedes Santiago‐Calvo ◽  
Fernando Villafañe ◽  
Miguel Angel Rodríguez‐Perez ◽  
Javier Rosas ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Polyurethane Foam ◽  
Flame Retardancy ◽  
Expandable Graphite ◽  
Rigid Polyurethane Foam
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