The fabrication of phytate and LDH-based hybrid nanosheet towards improved fire safety properties and superior smoke suppression of intumescent flame retardant LDPE

Liu, Yingru; Hu, Xiaoping; Han, Shihu; Wang, Yiqing; Wu, Zhenzhong; Qian, Lijun

doi:10.1016/j.tca.2022.179271

Cited by 15 publications

(2 citation statements)

References 68 publications

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“…[24][25][26] Therefore, researchers have shifted their focus to developing new IFR systems, which can be constructed by combining with other flame retardants, using microencapsulation technology, or synthesizing single-component IFRs. [27][28][29][30][31][32][33][34][35] For instance, Huang et al prepared a core-shell IFR with poly(melamine-coformaldehyde) as the char-forming agent and melamine cyanurate encapsulated with melamine formaldehyde resin. The modified flame retardant system showed excellent flame retardancy, achieving a LOI value of 28 and a V0 rating.…”

Section: Introductionmentioning

confidence: 99%

Ammonium polyphosphate@melamine phytate-layered double hydroxides: a loaded core–shell flame retardant for flame retardancy and smoke suppression in polypropylene

Li,

Feng,

Cai

et al. 2024

New J. Chem.

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Section: Introductionmentioning

confidence: 99%

Ammonium polyphosphate@melamine phytate-layered double hydroxides: a loaded core–shell flame retardant for flame retardancy and smoke suppression in polypropylene

Li,

Feng,

Cai

et al. 2024

New J. Chem.

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“…Among the types of PE, low‐density polyethylene (LDPE) has a global market size of $42.02 billion and is expected to grow to $69.56 billion in 2026 2 . With this high market size, LDPE has been extensively used in many industrial fields such as films, packaging materials, pipes, wires, and cables due to its outstanding properties of high mechanical stability, good chemical resistance, excellent electric insulation, low toxicity, easy processability and cost efficiency 3,4 . However, its low melting and decomposition temperatures, as well as high flammability and burning with dripping, cause it to lose some valuable and critical physical properties at higher temperatures, and also rapid flame spread and smoke emission limit the processability and application of LDPE 1 .…”

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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Improving the flame retardancy efficiency and mechanical properties of the intumescent flame retarded low‐density polyethylene by the dual actions of polyurea microencapsulation and aluminum hypophosphite

Lan

Gao

Xiao

et al. 2023

J of Applied Polymer Sci

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The use of intumescent flame retardants to retard polyethylene usually had the disadvantages of low flame retardancy efficiency and poor compatibility between intumescent flame retardants and low-density polyethylene (LDPE), which led to the reduction of mechanical properties of materials. In order to solve these issues, the microencapsulated ammonium polyphosphate (MAPP) and microencapsulated aluminum hypophosphite (MAHP) with polyurea were prepared through the interfacial polymerization of water-in-oil (W/O) microemulsions. The flame retarded polyethylene composites with MAPP and MAHP were manufactured. The LDPE composites with 17.3 wt% of MAPP and 3.9 wt% of MAHP possessed a LOI value of 27.3% and achieved the V-0 standard. The PHRR and THR were remarkably decreased by 30.3% and 31.1% compared with that of the LDPE. Furthermore, the tensile strength of LDPE/MAPP-MAHP was 19.1% higher than that of LDPE/APP-AHP because of good dispersion and compatibility of MAPP and MAHP with LDPE. This work provides a new method to prepare flame-retardant LDPE with high performance and the related mechanisms were discussed in detail.

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The fabrication of phytate and LDH-based hybrid nanosheet towards improved fire safety properties and superior smoke suppression of intumescent flame retardant LDPE

Cited by 15 publications

References 68 publications

Ammonium polyphosphate@melamine phytate-layered double hydroxides: a loaded core–shell flame retardant for flame retardancy and smoke suppression in polypropylene

Ammonium polyphosphate@melamine phytate-layered double hydroxides: a loaded core–shell flame retardant for flame retardancy and smoke suppression in polypropylene

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

Improving the flame retardancy efficiency and mechanical properties of the intumescent flame retarded low‐density polyethylene by the dual actions of polyurea microencapsulation and aluminum hypophosphite

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