A Cross-linked Polyethylene with Recyclability and Mechanical Robustness Enabled by Establishment of Multiple Hydrogen Bonds Network via Reactive Melt Blending

Mao, Hongda; Zhang, Tingting; Guo, Zhang; Bai, Dongyu; Wang, Jie; Xiu, Hao; Fu, Qiang

doi:10.1007/s10118-023-2907-5

Cited by 2 publications

(3 citation statements)

References 50 publications

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“…The incorporation of hydrogen bond cross-linking results in a clear enhancement of mechanical properties and creep resistance, while also demonstrating favorable retention of thermal properties and recyclability. 27 Conventional cross-linked polyethylene (PEX) has traditionally lacked reprocessability in the molten state, rendering it unsuitable for recycling in high-value applications. Nevertheless, Fenimore et al recently showcased a method for converting thermoplastic polyethylene (PE) into polyethylene covalent adaptable networks (CANs) via a reactive radicalbased, molten-state processing approach.…”

Section: Recycling Of Cross-linked Polyethylenementioning

confidence: 99%

“…Qiang and colleagues prepared multiple H-bond cross-linked PE successfully by reactively blending maleic anhydride grafted polyethylene (PE- g -MAH) with 3-amino-1,2,4-triazole (ATA) to form amide triazole ring-carboxylic acid units. The incorporation of hydrogen bond cross-linking results in a clear enhancement of mechanical properties and creep resistance, while also demonstrating favorable retention of thermal properties and recyclability …”

Section: Recycling Of Cross-linked Polyethylenementioning

confidence: 99%

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Review on Recycling of Cross-Linked Polyethylene

Selvin,

Shah,

Maria

et al. 2024

Ind. Eng. Chem. Res.

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Cross-linked polyethylene is one of the most widely used thermosetting plastics. Due to its low cost, lightweight, and exceptional insulation properties against electricity and heat, it is frequently used as an insulation material for wires and cables. This polymer attracted interest in several different applications, including building services, piping systems, hydronic radiant heating, cooling systems, etc. However, because XLPE is a thermosetting plastic with limited fluidity and poor moldability, recycling this cross-linked form of polyethylene is extremely important. Due to irreversible covalent cross-linking, recycling XLPE is a very challenging task, and it can contribute to serious environmental issues, including soil and air pollution because most of this industrial waste is buried in landfills or removed by incineration. Therefore, recycling this kind of material with a crosslinked network structure is highly problematic. Therefore, we need an energyefficient, cost-effective, and eco-friendly recycling process to safeguard our ecosystem. In this article, we are systematically reviewing the recent advances in the recycling of XLPE. The major challenges are also discussed.

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Section: Recycling Of Cross-linked Polyethylenementioning

confidence: 99%

Section: Recycling Of Cross-linked Polyethylenementioning

confidence: 99%

Review on Recycling of Cross-Linked Polyethylene

Selvin,

Shah,

Maria

et al. 2024

Ind. Eng. Chem. Res.

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“…Zhang等 [55] 将抗氧剂N-( 4 Zych等 [56] 将脲基嘧啶酮(UPy)引入各种侧链含羟基的PE中, 通过多重氢键使PE产生交联, 交联后的材料可以在150 ℃以下反应挤出加工, 显著改善了PE的热学、流变和力学性能. 然而, UPy具有较差的热稳定性, 不利于大规模工业应用. Caffy和Nicolaÿ [57] 将用于自由基接枝的硝基氧化学和作为缔合交换反应的硼酸酯复分解相结合, 采用反应挤出法制备了具有不同交联度的类玻璃化PE, 证实了该聚合物具有良好的热稳定性, 并且力学性能不会产生明显变化. 此外, Mao等 [58] 通过聚乙烯接枝马来酸酐(PE-g-MAH)与3-氨基图 6 纯LDPE和纳米复合材料热老化前后的图示 [54] Fig.…”

Section: ) Ramu模型 Ramu模型主要是将逆幂定律unclassified

Aging and life control of cross-linked polyethylene as cable insulation material

Wang,

Li,

Zhang

et al. 2024

Acta Phys. Sin.

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Cross-linked polyethylene (XLPE) has been widely applied in the field of power cables because of its excellent mechanical properties and insulating properties. However, during the operation of high voltage cables, XLPE will inevitably be affected by electrical aging, thermal aging and electric-thermal joint aging, which makes the performance and life of the material decline. Therefore, it is necessary to enhance the aging resistance of XLPE without affecting its mechanical properties and insulating properties, so as to achieve the purpose of extending its service life. In this paper, the structural characteristics and cross-linking mechanism of XLPE are introduced, the aging process and influencing mechanism are systematically analyzed, and the life decay problems of XLPE due to aging are explored by using methods such as the temperature Arrhenius equation and the inverse power law of voltage. The regulatory strategies such as grafting, blending, and nano-particle modification, etc., can be applied to improve the thermal stability, antioxidant performance, and thermal aging resistance of XLPE, thereby extending its service life. Finally, the future direction of the strategies for regulating the service life of XLPE cable insulation materials is envisioned, which provides theoretical guidance for the further improvement and long-term stable operation of XLPE cable insulation materials.

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A Cross-linked Polyethylene with Recyclability and Mechanical Robustness Enabled by Establishment of Multiple Hydrogen Bonds Network via Reactive Melt Blending

Cited by 2 publications

References 50 publications

Review on Recycling of Cross-Linked Polyethylene

Review on Recycling of Cross-Linked Polyethylene

Aging and life control of cross-linked polyethylene as cable insulation material

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