Flame-Retardant Properties of PP/Al(OH)<sub>3</sub>/Mg(OH)<sub>2</sub>/POE/ZB Nanocomposites

Liang, Ji‐Zhao; Chen, Y.; Jiang, Xiang

doi:10.1080/03602559.2011.639829

Cited by 26 publications

(9 citation statements)

References 22 publications

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“…Liang et al, in [ 17 , 18 ], investigated the flame-retardant properties of a polypropylene-based composite coating with either aluminum hydroxide, magnesium hydroxide or zinc borate. The FR content was added in the range of 10 to 70 phr.…”

Section: Introductionmentioning

confidence: 99%

Flame-Retardant Performance Evaluation of Functional Coatings Filled with Mg(OH)2 and Al(OH)3

Piperopoulos

Atria²,

Calabrese

et al. 2022

Polymers

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In the shipbuilding sector (cruises, ferries, etc.), the design and control constraints applied to improve the fire safety conditions of naval vessels are acquiring important relevance. Research activities have aimed at enhancing the fire resistance of structures and surface coatings to make ships’ working environments safer, trying to combine performance, durability and low costs. In this context, the aim of this paper is to develop and optimize flame-retardant coatings for naval applications. In particular, in an acrylic carrier, Mg(OH)2 and Al(OH)3 fillers were added to exalt the fire resistance capabilities of the coatings. Furthermore, the effect of the particle size of the hydroxides on the coatings’ fire resistance was investigated. The coatings were studied by structural (XRD), thermo-physical (TG) and morphological (SEM) characterization to evaluate their thermal stability and the damage level due to fire exposition. Specifically, fire reaction tests were applied at different fire exposure times (15 s, 30 s) to estimate the fire resistance of the proposed coatings compared to the commercial reference. The results show that the coatings based on aluminum and magnesium hydroxides exhibit favorable fire resistance. Particularly, effective performances were observed for short times of exposure to direct flames. Furthermore, the temperature monitoring of the steel alloy support during the test allowed us to evaluate the degree of insulation of the coating, highlighting a better result for the specimen filled with Mg(OH)2, making this product promising for its optimization in this context.

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Section: Introductionmentioning

confidence: 99%

Flame-Retardant Performance Evaluation of Functional Coatings Filled with Mg(OH)2 and Al(OH)3

Piperopoulos

Atria²,

Calabrese

et al. 2022

Polymers

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“…The screw speed was 60 rotation/min and the extrusion temperature range was from 160 C to 180 C. For investigating the influence of the flame-retardant content on the tensile and combustion behavior of the composites, the weight fractions (' f ) of the Al(OH) 3 /Mg(OH) 2 were, respectively, selected as 9.1, 16.7, 23.1, 28.6, 33.3, 37.5, and 41.2 wt%. It was found in the previous work 4 that the flame-retardant properties were good when the weight ratio between the Al(OH) 3 and the Mg(OH) 2 was 1:2. Thus, the weight ratio between the Al(OH) 3 and the Mg(OH) 2 was selected as 1:2 in the present study.…”

Section: Preparationmentioning

confidence: 91%

“…1,2 Mg(OH) 2 is usually used with Al(OH) 3 to improve the flameretardant properties of polymers such as polypropylene (PP). 3,4 In addition, Mg(OH) 2 and Al(OH) 3 can improve the thermal stability of polymer composites. 5,6 Gwon et al 7 studied the effect of hybridization of wood fibers and metal hydroxides on the thermal stability of PP-based plastic composites through thermogravimetric analysis and found that the thermal stability and the maximum weight loss rate (T-max) of the PP matrix decomposition increased with an increment of the contents of both the Al(OH) 3 and the Mg(OH) 2 fillers.…”

Section: Introductionmentioning

confidence: 99%

“…In general, the improvement of the flame-retardant properties of a polymer needs a high concentration of Mg(OH) 2 and Al(OH) 3 . In previous work, Liang and his colleagues 4 investigated the effects of the filler content (from 10 wt% to 70 wt%) on the flame-retardant properties of PP/Al(OH) 3 /Mg(OH) 2 composites filled with nanometer calcium carbonate (nano-CaCO 3 ); the results showed that the limiting oxygen index (LOI) of the composites increased approximately linearly with an increase of the filler concentration. However, the mechanical properties, such as the tensile, impact, and flexural properties, of the flame-retardant polymer composites are usually weakened in the case of high concentration of Mg(OH) 2 and Al(OH) 3 .…”

Section: Introductionmentioning

confidence: 99%

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Tensile properties and fire residue morphology of flame-retarded-polypropylene composites

Liang

2020

Journal of Thermoplastic Composite Materials

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The polypropylene (PP) composites filled with flame retardants (including aluminum hydroxide (Al(OH)3), magnesium hydroxide (Mg(OH)2), and zinc borate (ZB)) were prepared, and the composites were separately loaded with polyolefin elastomer (POE) and nanometer calcium carbonate (nano-CaCO3). The tensile properties and the fire residue morphology of the specimens after burning for these three groups of composites were measured. The results were shown that the tensile fracture strength and the Young’s modulus increased while the tensile yield strength and the tensile elongation at break ( δ b) decreased with increasing flame-retardant volume fraction. At the same flame-retardant content, the δ b values of the PP/Al(OH)3/Mg(OH)2/ZB/nano-CaCO3/POE composite were the highest in the three groups of composites. The fire residue in the pyrolysis zone of the specimens increased corresponding to the increased flame-retardant volume fraction and with loading the nano-CaCO3 and POE, especially at low-flame-retardant concentration. The reinforcing and the flame-retarded mechanisms of the composites were discussed.

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“…[3][4][5][6] Aluminum hydroxide (Al(OH) 3 ) and magnesium hydroxide (Mg(OH) 2 ), a kind of halogen-free flame retardants, have been widely used in various polymers, such as PP, because of its triple functions as filler, flame retardant, and smoke suppressant. [7][8][9][10][11] Microencapsulated red phosphorus (MRP) is a kind of synergist and is usually used along with Al(OH) 3 and Mg(OH) 2 in producing flame-retardant-filled polymer composites. 12,13 Melt volume flow rate (MVR) is one of the important parameters for characterizing the flow behavior of polymeric materials and filled polymer systems.…”

Section: Introductionmentioning

confidence: 99%

Melt flow properties and morphology of polypropylene composites filled with microencapsulated red phosphorus

Feng

Tsui

et al. 2013

Journal of Thermoplastic Composite Materials

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Microencapsulated red phosphorus (MRP)-filled polypropylene (PP) composites were prepared using a twin-screw extruder. The effects of load and temperature as well as the dispersion or distribution of the filler particles in the matrix on the melt volume flow rate (MVR) and melt density ( m ) of the PP/MRP composites were investigated using a melt flow indexer and a scanning electron microscope. The temperatures and loads were varied from 180 to 205 C and from 2.16 to 12.5 kg, respectively. The results showed that the MVR of the composites increased nonlinearly with increase in temperature and load. The sensitivity of MVR of the composite melts to temperature was significant. The MVR of the composites also decreased slightly with an increase in the MRP weight fraction. However, the values of m of the composites varied slightly with increase in load, temperature, and MRP weight fraction. The findings can provide useful information for optimum processing of these composites.

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Flame-Retardant Properties of PP/Al(OH)₃/Mg(OH)₂/POE/ZB Nanocomposites

Cited by 26 publications

References 22 publications

Flame-Retardant Performance Evaluation of Functional Coatings Filled with Mg(OH)2 and Al(OH)3

Flame-Retardant Performance Evaluation of Functional Coatings Filled with Mg(OH)2 and Al(OH)3

Tensile properties and fire residue morphology of flame-retarded-polypropylene composites

Melt flow properties and morphology of polypropylene composites filled with microencapsulated red phosphorus

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Flame-Retardant Properties of PP/Al(OH)3/Mg(OH)2/POE/ZB Nanocomposites

Cited by 26 publications

References 22 publications

Flame-Retardant Performance Evaluation of Functional Coatings Filled with Mg(OH)2 and Al(OH)3

Flame-Retardant Performance Evaluation of Functional Coatings Filled with Mg(OH)2 and Al(OH)3

Tensile properties and fire residue morphology of flame-retarded-polypropylene composites

Melt flow properties and morphology of polypropylene composites filled with microencapsulated red phosphorus

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Flame-Retardant Properties of PP/Al(OH)₃/Mg(OH)₂/POE/ZB Nanocomposites