Influence of modified polyethylene compatibilizer on filler dispersion and flammability characteristics of linear low density polyethylene/cyclo olefin copolymer blends containing flame retardant combinations

Sánchez-Valdés, S.; Zapata-Domínguez, A. G.; Graciano-Verdugo, A.Z.; Valle, L.F. Ramos de; Morales‐Cepeda, Ana Beatriz; Ramı́rez-Vargas, E.; Rodríguez‐Fernández, Oliverio; Lozano-Ramírez, T.; Flores-Gallardo, Sergio G.; Espinoza‐Martínez, Adriana B.; Méndez-Nonell, J.; Lafleur, Pierre G.; Karami, Shahir

doi:10.1080/01694243.2018.1430977

Cited by 8 publications

(6 citation statements)

References 36 publications

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“…Few studies [ 46,79–83 ] investigated the flammability of magnesium hydroxide reinforced polymer blends. The flammability properties of the blend composites were found to be affected the type of polymer in the blend, content of magnesium hydroxide, synergistic effect of flame‐retardant fillers and the modification of the filler.…”

Section: Flammability Propertiesmentioning

confidence: 99%

Synthesis, mechanical, and flammability properties of metal hydroxide reinforced polymer composites: A review

Mochane

Mokhothu

Mokhena

2021

Polymer Engineering & Sci

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Burning of plastics present a serious problem for both our health and safety when applied in advanced applications. Based on the above argument, there is need to enhance the flammability resistance of polymers in order to meet the required flammability standards. Various flame-retardant fillers are incorporated into polymers in order to provide a protection against heat into the system and inhibit the diffusion of volatile materials out of the polymer composite system. Different flame-retardant fillers including phosphorusbased materials, carbon-based flame retardants, and inorganic hydrated flameretardant fillers have been added into polymers in order to improve the flame retardancy of the plastics. Amongst the abovementioned flame-retardant fillers, inorganic hydrated fillers have gained popularity, especially magnesium hydroxide (Mg(OH) 2 ) due its high heat absorption capacity, less smoke release, and non-toxic, as a result environmentally friendly flame-retardant filler. However, an effective content of magnesium hydroxide for better flammability retardancy is approximately 60 wt%, which happens to deteriorate the mechanical properties of the magnesium hydroxide/polymer composites. In order to try and compensate for reduction in mechanical properties and improve the flame retardancy of the composites at the same time, magnesium hydroxide is incorporated with another flame-retardant fillers. This review article covers an in-depth discussion on the effect of magnesium hydroxide modification, synergistic effect with other fillers, particle size of the magnesium hydroxide, and the effect of compatibilizer(s) on both mechanical and flammability properties of magnesium hydroxide reinforced polymer composites.

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Section: Flammability Propertiesmentioning

confidence: 99%

Synthesis, mechanical, and flammability properties of metal hydroxide reinforced polymer composites: A review

Mochane

Mokhothu

Mokhena

2021

Polymer Engineering & Sci

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“…On the other hand, a common approach to further improve the flame retardancy effect is to combine MH with other flame retardants such as boron compounds, 22 metal oxides, 23 minerals 24 and carbon based materials 25 . Metal carbonates are widely preferred to be combined with MH to improve flame retardant efficiency 26,27 .…”

Section: Introductionmentioning

confidence: 99%

Improvement of flame retardancy and thermal stability of highly loaded low density polyethylene/magnesium hydroxide composites

Yücesoy,

Balçik Tamer,

Berber

2023

J of Applied Polymer Sci

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This study aims to enhance the flame retardant efficiency and thermal stability of low density polyethylene (LDPE) by using halogen‐free inorganic additives. To prepare the highly loaded flame retardant polymer composites, LDPE melt mixes with magnesium hydroxide and magnesium carbonate at different weight ratios using a twin‐screw extruder. The composites are characterized by thermogravimetric analysis, crystallinity degree, tensile strength, morphological analysis, limiting oxygen index and UL‐94 vertical burning test. An optimum MH/MC weight ratio of 60/40 provides satisfactory composite properties with increased maximum thermal degradation temperature from 472.3 to 483.5°C, the highest LOI value of 32.5% and a UL‐94 V‐0 rating without melt dripping. The homogeneity of this composite is improved by using a polymeric compatibilizer, MAH‐g‐PE and an enhancement in tensile strength, elongation at break and elastic modulus values of 33.68%, 33.02% and 23.55%, respectively, are obtained. In order to create synergism between the flame retardant additives, 1, 3 and 5 wt% zinc borate is added to the composite system. The incorporation of 5 wt% ZB causes a significant delay in the thermal decomposition of MH with an improvement of 51.8°C in maximum degradation temperature. This composite also exhibits a satisfactory flame retardant grade with a UL‐94 V‐0 rating.

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“…As the macromolecular chains of COC resin contain some ethylene segments, it is believed that COC might has some compatibility with SEBS, [ 12,13 ] linear low‐density polyethylene (LLDPE), [ 14,15 ] high density polyethylene (HDPE), [ 16–18 ] polypropylene (PP), [ 19,20 ] and polyolefin elastomer (POE). [ 21–23 ] Among them, Dorigato et al [ 14 ] proved the interface adhesion between LLDPE and COC through scanning and transmission electron microscopy.…”

Section: Introductionmentioning

confidence: 99%

Preparation the composite with high toughness and strength by recycled cyclic olefin copolymer

Ming

Liu

et al. 2022

Polymer Engineering & Sci

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At present, it is of great significance to develop an effective method of recycling cyclic olefin copolymers (rCOC) due to its increasing application. But, its poor toughness is still an important difficulty to limit its effective recycling. In this article, we introduced PA6 into the POE-g-MAH/rCOC composites. Because of the good compatibility of POE-g-MAH between PA6 and rCOC, it just led to an overall improvement in mechanical properties of PA6/POE-g-MAH/rCOC (45/15/40) composites. Its tensile strength reached 42.3 MPa, which was more than 41.9% compared with that of POE-g-MAH/rCOC composites. Its notched impact strength was 11.7 kJ/m 2 , which was higher than 875.0% compared with rCOC. Furthermore, the component of PA6 was wrapped by nonpolar rCOC and POE-g-MAH, resulting in a low water absorption rate (1.0%). So, the strength of the composites only dropped a little after water adsorption. In summary, the addition of PA6 helped the composites effectively utilize the toughness of POE-g-MAH. Thus, we developed an easy method to recycle rCOC and prepare the responding composites with high strength and toughness.compatibility, PA6, POE-g-MAH, recycled cycloolefin copolymer, toughening | INTRODUCTIONCyclic olefin copolymers (COCs) are amorphous transparent material prepared by metallocene polymerization with norbornene or its derivatives and ethylene. [1][2][3][4][5] Compared with traditional transparency plastics such as polycarbonate (PC) and polymethyl methacrylate (PMMA), COC resin has been widely used in high-end lenses, medical equipment, [6] and pharmaceutical packaging [7] due to its high water vapor barrier rate, [8,9] good chemical resistance, [10] and high biocompatibility. [11] But, due to the high requirements for materials in the optical field and pharmaceutical field, recycled COC resin is not permitted to employ again. Thus, the recycling of this stable COC resin becomes more and more urgent. However, the poor toughness of rCOC has greatly limited

show abstract

Influence of modified polyethylene compatibilizer on filler dispersion and flammability characteristics of linear low density polyethylene/cyclo olefin copolymer blends containing flame retardant combinations

Cited by 8 publications

References 36 publications

Synthesis, mechanical, and flammability properties of metal hydroxide reinforced polymer composites: A review

Synthesis, mechanical, and flammability properties of metal hydroxide reinforced polymer composites: A review

Improvement of flame retardancy and thermal stability of highly loaded low density polyethylene/magnesium hydroxide composites

Preparation the composite with high toughness and strength by recycled cyclic olefin copolymer

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