On the use of magnesium hydroxide towards halogen-free flame-retarded polyamide-6/polypropylene blends

Balakrishnan, Harintharavimal; Hassan, Azman; Isitman, Nihat Ali; Kaynak, Cevdet

doi:10.1016/j.polymdegradstab.2012.05.011

Cited by 75 publications

(57 citation statements)

References 28 publications

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“…According to the DTG curve, the greatest mass loss occurs from 250°C to 410°C. These results agree with previous work [18,37,38].…”

Section: Chemical and Thermal Analysis Of Mg(oh) 2 Fillersupporting

confidence: 94%

“…These phenomena depend primarily on homogeneous filler dispersion. For the material modified with maleic anhydride, PP/10% PP-g-MAH/30% Mg(OH) 2 , the rate reduction from 24.3 mm min -1 to 14.1 mm min -1 and the 42% decrease compared to pure polypropylene are significant compared with literature data [11][12][13]37].…”

Section: Flame Retardant and Thermal Properties Of Pp/mg(oh) 2 Composmentioning

confidence: 56%

“…TG and DTG analysis determined the mass loss caused by heat (a basis for evaluation of resistance to thermal decomposition), and to compare temperatures at which decomposition began [13,14,18,37]. The TG and DTG curves shown in Figs.…”

Section: Flame Retardant and Thermal Properties Of Pp/mg(oh) 2 Composmentioning

confidence: 99%

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Functional polypropylene composites filled with ultra-fine magnesium hydroxide

et al. 2014

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Magnesium hydroxide was prepared under controlled conditions from aqueous Mg(NO 3 ) 2 and NaOH solutions. The small, nanoplate-shaped particle size distribution was monomodal from 164 to 459 nm. Functional polypropylene/Mg(OH) 2 and polypropylene/polypropylene 1% maleic anhydride/Mg(OH) 2 composites were prepared containing 10% or 30% Mg(OH) 2 . The composites have a high Young's modulus (twice that of polypropylene) and comparable tensile strength but less ductility. EDX examination of the fractured composite surfaces suggested a homogeneous Mg(OH) 2 distribution for composites produced with the addition of polypropylene grafted with maleic anhydride. The polypropylene/Mg(OH) 2 composites showed good antibacterial activity. The polypropylene/ polypropylene 1% maleic anhydride/Mg(OH) 2 composites were less effective.

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“…According to the DTG curve, the greatest mass loss occurs from 250°C to 410°C. These results agree with previous work [18,37,38].…”

Section: Chemical and Thermal Analysis Of Mg(oh) 2 Fillersupporting

confidence: 94%

Section: Flame Retardant and Thermal Properties Of Pp/mg(oh) 2 Composmentioning

confidence: 56%

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Functional polypropylene composites filled with ultra-fine magnesium hydroxide

et al. 2014

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“…The initial decomposition temperature (T 5 ), the temperature of the maximum mass loss rate (T max ), estimated on the basis of the DTG maximum peak, and the char yield at 700˝C (W I ) measured in both environments are listed in Table 1. The thermal decomposition behavior of neat PA6 and PA6 formulations with different FR systems based on non-meltable melamine derivatives has been well studied [7,[37][38][39][40]. In the nitrogen environment (Figure 2), PA6 has a T 5 value of approximately 388˝C, decomposed in one stage process with T max of about 455˝C, leaving negligible char at 700˝C (0.28 wt %), which can be attributed to the partial decomposition of the cross-linked structure at the final stage of the decomposition process.…”

Section: Thermal Stabilitymentioning

confidence: 99%

“…Within the new non-halogenated FRs, researchers have proposed different types including red phosphorus [5], magnesium hydroxide [6,7], boron [8], organoclay nanocomposites [9,10], glass-fiber [11,12], silicon [13], multiwall carbon nanotubes composites [14][15][16], carbon fiber [17], and melamine-based products [18][19][20] in various combinations. Phosphorus-based FRs are among the most efficient and versatile flame retardants, and most of them can act through a combination of vapor-(inhibition of active species in gas phase) and condensed-phase reactions (promotion of the polymer carbonization and char formation) [21,22].…”

Section: Introductionmentioning

confidence: 99%

Effect of Meltable Triazine-DOPO Additive on Rheological, Mechanical, and Flammability Properties of PA6

et al. 2015

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Through a straightforward approach, a new meltable, halogen-free, nitrogen-phosphorus-based flame retardant (FR), 6-(2-(4,6-diamino-1,3,5-triazin-2-yl)ethyl) dibenzo [c,e][1,2]oxaphosphinine 6-oxide (DTE-DOPO) was synthesized and incorporated in polyamide 6 (PA6).It was proved that a very low phosphorus content of 1.46 wt % for DTE-DOPO additive improved the flame retardancy of PA6, leading to a non-flammable material. The performance of the new additive was compared to that of the commercially-available Exolit OP 1230. The PA6 formulations were evaluated by measuring the rheological, mechanical, and flammability behavior. Using compounding by melt extrusion, 17 wt % additives was introduced into PA6 matrix and the corresponding formulations were characterized. The results evidenced a higher homogeneity of DTE-DOPO with PA6, a high thermal stability with a catalyzing decomposition effect on PA6 caused by the presence of the new developed FR, enhanced elasticity for the PA6/DTE-DOPO formulation and a V0 rating for both formulations. Thermal and fire analysis indicated a primary gas-phase activity, combined with a complete suppression of the self-sustained burning for the PA6/DTE-DOPO formulation.Polymers 2015, 7 1542

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