Synergistic effect of a hypophosphorous acid-based ionic liquid and expandable graphite on the flame-retardant properties of wood–plastic composites

Abstract Polystyrene-based wood plastic composites (WPCs) containing ammonium polyphosphate (APP) and iron (Fe) powder were prepared in this work by solution blending with the aid of an alternating magnetic field. The mechanical, electrical, thermal and fire performances of the WPCs were analyzed through mechanical testing, thermogravimetry and CONE calorimeter. The addition of Fe powder decreased the tensile strength and increased the impact strength. The APP promoted the formation of sufficient char on the material’s surface and enhanced the flame retardant properties. Furthermore, an alternating magnetic field was used to align the Fe powders. After the magnetic treatment, the electrical conductivity and thermal properties were found to increase considerably compared with those without treatment. The Agari model presented the most reasonable prediction of thermal conductivity as a function of Fe content among three classical thermal conduction models. According to the morphological observations, the iron particles in the composites tended to rearrange along the direction of the magnetic field after treatment, resulting in the enhancement of both thermal and electrical conductivities. The prepared WPCs in this study exhibited good flame retardant properties together with the acceptable mechanical properties of the composites.

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Synergistic effect of ammonium polyphosphate and expandable graphite on flame-retardant properties of acrylonitrile-butadiene-styrene

Journal of Applied Polymer Science ◽

10.1002/app.36997 ◽

2012 ◽

Vol 126 (4) ◽

pp. 1337-1343 ◽

Cited By ~ 47

Author(s):

Lan-Lan Ge ◽

Hong-Ji Duan ◽

Xiao-Guang Zhang ◽

Chen Chen ◽

Jian-Hua Tang ◽

...

Keyword(s):

Synergistic Effect ◽

Flame Retardant ◽

Acrylonitrile Butadiene Styrene ◽

Ammonium Polyphosphate ◽

Expandable Graphite ◽

Flame Retardant Properties ◽

Butadiene Styrene

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Preparation and performance of high-density polyethylene-based wood–plastic composites reinforced with red pottery clay

Journal of Reinforced Plastics and Composites ◽

10.1177/0731684417693698 ◽

2017 ◽

Vol 36 (12) ◽

pp. 853-863

Author(s):

Qingde Li ◽

Xun Gao ◽

Wanli Cheng ◽

Guangping Han ◽

Jiye Han

Keyword(s):

Flame Retardant ◽

High Density Polyethylene ◽

Comprehensive Evaluation ◽

Flexural Modulus ◽

High Density ◽

Wood Plastic Composites ◽

Plastic Composites ◽

Available Carbon ◽

Flame Retardant Properties ◽

And Performance

In this study, by preparing red pottery clay according to unearthed red pottery clay pieces and using red pottery clay to reinforce high-density polyethylene-based wood–plastic composites, the effects of the amount of red pottery clay on the properties of the fabricated wood–plastic composites were investigated. The results indicated that when the amount of red pottery clay increased, flexural strength and impact strength of the composite initially increased and then decreased; flexural modulus increased and tensile strength and elongation at break decreased. The cone calorimeter tests studied the effects of red pottery clay on the flame retardant and smoke suppressant behaviors of high-density polyethylene-based wood–plastic composites. Red pottery clay formed a ceramic structure on the surface and inside high-density polyethylene, thus preventing high-density polyethylene from interacting with oxygen and increasing the amount of available carbon. As a result, the flame retardant properties of wood–plastic composites were improved due to the addition of red pottery clay. A comprehensive evaluation of the properties of high-density polyethylene-based wood–plastic composites reinforced with red pottery clay showed that addition of 5% of red pottery clay resulted in the most optimal mechanical properties: the addition of red pottery clay improved the density of the composite, decreased the shrinkage rate, and enhanced the flame retardant properties.

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Synergistic Effect and Flame-retardant Properties of Small Molecular Organic Amines and Phosphates

Fibers and Polymers ◽

10.1007/s12221-021-9789-3 ◽

2021 ◽

Author(s):

Xin Chen ◽

Junkang Guo ◽

Limei Ren ◽

Shenyong Ren ◽

Baojian Shen ◽

...

Keyword(s):

Synergistic Effect ◽

Flame Retardant ◽

Flame Retardant Properties ◽

Organic Amines

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Synergistic effect of the inclusion of glass fibers and halloysite nanotubes on the static and dynamic mechanical, thermal and flame retardant properties of polypropylene

Materials Research Express ◽

10.1088/2053-1591/aac67d ◽

2018 ◽

Vol 5 (6) ◽

pp. 065308 ◽

Cited By ~ 10

Author(s):

A Jenifer ◽

N Rasana ◽

K Jayanarayanan

Keyword(s):

Synergistic Effect ◽

Flame Retardant ◽

Glass Fibers ◽

Halloysite Nanotubes ◽

Dynamic Mechanical ◽

Flame Retardant Properties

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The Study of Melamine Modified by Imidazolium Based Ionic Liquid [BMIM]PF6 on the Flame Retardancy of Rigid Polyurethane Foam

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1030-1032.241 ◽

2014 ◽

Vol 1030-1032 ◽

pp. 241-245 ◽

Cited By ~ 1

Author(s):

Yan Wei Li

Keyword(s):

Ionic Liquid ◽

Flame Retardant ◽

Polyurethane Foam ◽

Fire Retardant ◽

Rigid Polyurethane Foam ◽

Flame Resistance ◽

Initial Decomposition Temperature ◽

Noticeable Effect ◽

Rigid Foam ◽

Flame Retardant Properties

In this paper, the effect of C3H6N6modified by imidazolium based Ionic Liquid 1-butyl-methylimidazolium hexafluorophosphate ([BMIM]PF6) on polyurethane rigid foam flame retardant properties was conducted.The results show that the flame retardant properties of C3H6N6 modified with Ionic Liquid significantly increased and the LOI increased form 22.3 to 24.5. In the modification process, the ionic liquid mass have a very noticeable effect to the flame retardant property and when [BMIM]PF6 and C3H6N6 in quality was 4:6, Fire-retardant effect was best.Compared with the prior to the modification, C3H6N6 modified can increase effective Flame resistance of materials, horizontal burning speed from 67.6mm/min down to 33.4mm/min.Thermal degradation data show that C3H6N6 modified could improve initial decomposition temperature and reminder yield of rigid polyurethane foam,and then heat release reduced, the decomposition controlled,thermal stability increased.

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