Comparative mechanical, fire‐retarding, and morphological properties of high‐density polyethylene/(wood flour) composites with different flame retardants

Aluminum hydroxide, magnesium hydroxide, and 1,2‐bis(pentabromophenyl) ethane were incorporated into high‐density polyethylene (HDPE) and wood flour composites, and their mechanical properties, morphology, and fire‐retardancy performance were characterized. The addition of flame retardants slightly reduced the modulus of elasticity and modulus of rupture of composites. Morphology characterization showed reduced interfacial adhesion among wood flour, HDPE, and flame retardants in the composites compared with control composites (HDPE and wood flour composites without the addition of flame retardants). The flame retardancy of composites was improved with the addition of the flame retardants, magnesium hydroxide and 1,2‐bis(pentabromophenyl) ethane, especially 1,2‐bis(pentabromophenyl) ethane, with a significant decrease in the heat release rate and total heat release. Char residue composition and morphology, analyzed by attenuated total reflectance, Fourier‐transform infrared spectroscopy, and scanning electron microscopy, showed that the char layer was formed on the composite surface with the addition of flame retardants, which promoted the fire performance of composites. The composites with 10 wt% 1,2‐bis(pentabromophenyl) ethane had good fire performance with a continuous and compact char layer on the composite surface. J. VINYL ADDIT. TECHNOL., 24:3–12, 2018. © 2015 Society of Plastics Engineers

[1]  Azman Hassan,et al.  Effects of irradiation on the mechanical, electrical, and flammability properties of (low‐density polyethylene)/(ethylene‐[vinyl acetate] copolymer) blends containing alumina trihydrate , 2014 .

[2]  Min Xu,et al.  Effects of Boron Compounds on the Mechanical and Fire Properties of Wood-chitosan and High-density Polyethylene Composites , 2014 .

[3]  Yongjin Li,et al.  Formation of a Compact Protective Layer by Magnesium Hydroxide Incorporated with a Small Amount of Intumescent Flame Retardant: New Route to High Performance Nonhalogen Flame Retardant TPV , 2014 .

[4]  X. Wang,et al.  Controllable fabrication of zinc borate hierarchical nanostructure on brucite surface for enhanced mechanical properties and flame retardant behaviors. , 2014, ACS applied materials & interfaces.

[5]  Yu-Zhong Wang,et al.  Preparation and flammability of poly(vinyl alcohol) composite aerogels. , 2014, ACS applied materials & interfaces.

[6]  Sun-Young Lee,et al.  Thermal degradation behavior of polypropylene base wood plastic composites hybridized with metal (aluminum, magnesium) hydroxides , 2014 .

[7]  Lei Song,et al.  Effect of Functionalized Graphene Oxide with Hyper-Branched Flame Retardant on Flammability and Thermal Stability of Cross-Linked Polyethylene , 2014 .

[8]  Y. Arao,et al.  Improvement on fire retardancy of wood flour/polypropylene composites using various fire retardants , 2014 .

[9]  C. Guo,et al.  Synergistic effect of intumescent flame retardant and expandable graphite on mechanical and flame-retardant properties of wood flour-polypropylene composites , 2014 .

[10]  Haichang Guo,et al.  Effects of an (Intumescent flame retardant)‐montmorillonite combination on the thermal stability and fire‐retardant properties of LDPE/EVA nanocomposites , 2013 .

[11]  T. Kärki,et al.  Influence of mineral fillers on the fire retardant properties of wood‐polypropylene composites , 2013 .

[12]  Y. Mai,et al.  Recent developments in the fire retardancy of polymeric materials , 2013 .

[13]  Jeffrey W. Gilman,et al.  An overview of flame retardancy of polymeric materials: application, technology, and future directions , 2013 .

[14]  Qingwen Wang,et al.  Effect of zinc borate and wood flour on thermal degradation and fire retardancy of Polyvinyl chloride (PVC) composites , 2013 .

[15]  N. Ayrilmis.  Combined effects of boron and compatibilizer on dimensional stability and mechanical properties of wood/HDPE composites , 2013 .

[16]  M. Wagner,et al.  Residue Stabilization in the Fire Retardancy of Wood–Plastic Composites: Combination of Ammonium Polyphosphate, Expandable Graphite, and Red Phosphorus , 2012 .

[17]  Robert H. White,et al.  Effect of boron and phosphate compounds on physical, mechanical, and fire properties of wood–polypropylene composites , 2012 .

[18]  Jin Kuk Kim,et al.  Effect of flame retardants on mechanical properties, flammability and foamability of PP/wood–fiber composites , 2012 .

[19]  Robert H. White,et al.  Properties of flat‐pressed wood plastic composites containing fire retardants , 2011 .

[20]  Liping Li,et al.  Influence of ammonium polyphosphate modified with 3-(methylacryloxyl) propyltrimethoxy silane on mechanical and thermal properties of wood flour–polypropylene composites , 2011 .

[21]  N. Ayrilmis.  EFFECT OF FIRE RETARDANTS ON SURFACE ROUGHNESS AND WETTABILITY OF WOOD PLASTIC COMPOSITE PANELS , 2011 .

[22]  F. Mengeloglu,et al.  The effects of boron compounds synergists with ammonium polyphosphate on mechanical properties and burning rates of wood-HDPE polymer composites , 2011, European Journal of Wood and Wood Products.

[23]  Robert H. White,et al.  Effects of fire retardants on physical, mechanical, and fire properties of flat-pressed WPCs , 2011, European Journal of Wood and Wood Products.

[24]  Robert H. White,et al.  EVALUATION OF VARIOUS FIRE RETARDANTS FOR USE IN WOOD FLOUR-POLYETHYLENE COMPOSITES , 2010 .

[25]  Z. Ishak,et al.  Flammability and Mechanical Properties of Wood Flour-Filled Polypropylene Composites , 2010 .

[26]  Yunchu Hu,et al.  Influence of ultrafine zinc borate on the thermal degradation behavior of a(low‐density polyethylene)/(intumescent flame retardant) system , 2009 .

[27]  M. Sain,et al.  Flame retardant and mechanical properties of natural fibre–PP composites containing magnesium hydroxide , 2004 .

[28]  Bin Li,et al.  Investigation of mechanical property, flame retardancy and thermal degradation of LLDPE–wood-fibre composites , 2004 .