A novel two-step melt blending method to prepare nano-silanized-silica reinforced crosslinked polyethylene (XLPE) nanocomposites

Gill, Yasir Qayyum; Ehsan, Hira; Mehmood, Umer; Irfan, Muhammad; Saeed, Farhan

doi:10.1007/s00289-021-03989-z

Cited by 12 publications

(15 citation statements)

References 27 publications

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“…The intensity of this peak slightly increases with respect to the DCP content. Peaks around 1593 cm −1 were also observed corresponding to the presence of a mono‐substituted benzene ring 41 . This indicates that DCP was successfully decomposed and crosslinked, and the benzene ring is attached with OH (group); that is, R‐OH (α‐cumyl alcohol).…”

Section: Resultsmentioning

confidence: 89%

“…Initially, the tensile strength and modulus decreased by 3.8% and 37% at 0.5 phr DCP content, while higher variations (44% and 62%) are obtained at 2.5 phr DCP. In addition, the elongation at break also decreases with increasing DCP content 41 . These changes are attributed to the formation of crosslinks between polymer chains restricting their ability to stretch and deform under stress.…”

Section: Resultsmentioning

confidence: 99%

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The effect of chemical crosslinking on the properties of Rotomolded high density polyethylene

Ahmad,

Rostami‐Tapeh‐Esmaeil,

Rodrigue

2023

J of Applied Polymer Sci

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In this study, high density polyethylene (HDPE) was combined with dicumyl peroxide (DCP) to produce crosslinked parts via rotational molding. The effect of DCP content (0.1–2.5 phr) on the crosslinking degree was investigated to determine its effect on the chemical, mechanical, physical, and thermal properties of HDPE. The gel content and crosslink density was found to increase with DCP content. These trends led to a reduction in the degree of crystallinity, melting, and crystallization temperature. Thermogravimetric analysis (TGA) showed that crosslinked HDPE (xHDPE) has higher thermal stability than the neat matrix in both air and nitrogen atmosphere. In addition, a direct relationship was observed between improved thermal resistance and higher impact strength. Finally, relationships between the tensile properties of xHDPE and the degree of crystallinity were observed, which were all controlled by the level of crosslinking. These results have the potential to advance the manufacturing of high performance materials suitable for a wide range of applications such as automotive parts, agricultural products, chemical storage tanks, large waste containers, and fuel tanks in general.

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Section: Resultsmentioning

confidence: 89%

Section: Resultsmentioning

confidence: 99%

The effect of chemical crosslinking on the properties of Rotomolded high density polyethylene

Ahmad,

Rostami‐Tapeh‐Esmaeil,

Rodrigue

2023

J of Applied Polymer Sci

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“…The temperature increment is due to increased interaction between the XLPE matrix and LDH-Al 2 O 3 nanofillers, which lead from restricted mobility of XLPE chains to relaxation of the nanocomposite system at higher temperature. Another reason for increment of about 2 °C is attributed to the introduction of LDH-Al 2 O 3 is that it provides better networking to improve thermal properties [ 47 ]. Donghe and Qingyue concluded the introduction of nanoparticles in XLPE showed two main parameters: first, an increase in the melting point; second, the ability of crystallisation to slow down due to restriction in movement of molecular chain segment [ 40 , 48 ].…”

Section: Resultsmentioning

confidence: 99%

Dielectric, Mechanical, and Thermal Properties of Crosslinked Polyethylene Nanocomposite with Hybrid Nanofillers

et al. 2023

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Crosslinked polyethylene (XLPE) nanocomposite has superior insulation performance due to its excellent dielectric, mechanical, and thermal properties. The incorporation of nano-sized fillers drastically improved these properties in XLPE matrix due to the reinforcing effect of interfacial region between the XLPE–nanofillers. Good interfacial strength can be further improved by introducing a hybrid system nanofiller as a result of synergistic interaction between the nanofiller relative to a single filler system. Another factor affecting interfacial strength is the amount of hybrid nanofiller. Therefore, the incorporation amount of hybridising layered double hydroxide (LDH) with aluminium oxide (Al2O3) nanofiller into the XLPE matrix was investigated. Herein, the influence of hybrid nanofiller content and the 1:1 ratio of LDH to Al2O3 on the dielectric, mechanical, and thermal properties of the nanocomposite was studied. The structure and morphology of the XLPE/LDH-Al2O3 nanocomposites revealed that the hybridisation of nanofiller improved the dispersion state. The dielectric, mechanical, and thermal properties, including partial discharge resistance, AC breakdown strength, and tensile properties (tensile strength, Young’s modulus, and elongation at break) were enhanced since it was influenced by the synergetic effect of the LDH-Al2O3 nanofiller. These properties were increased at optimal value of 0.8 wt.% before decreasing with increasing hybrid nanofiller. It was found that the value of PD magnitude improvement went down to 47.8% and AC breakdown strength increased by 15.6% as compared to pure XLPE. The mechanical properties were enhanced by 14.4%, 31.7%, and 23% for tensile strength, Young’s modulus, and elongation at break, respectively. Of note, the hybridisation of nanofillers opens a new perspective in developing insulating material based on XLPE nanocomposite.

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“…[165][166][167][168][169][170][171][172] Therefore, coupling agents along with nanofillers were used to improve XLPE nanocomposites. For example, Gill et al [173] used a twostep melt blending technique to prepare silica-XLPE nanocomposites (Figure S1). The crosslinker (DCP) was combined with a nanofiller (nano-silanized silica).…”

Section: Manufacturing and Applications Of Xlpe And R-xlpe Productsmentioning

confidence: 99%

“…LLDPE was T A B L E 8 Formulation for the two-step melt blending nanocomposites. [173] used as a base resin and peroxide di-(4-tert-butyl cyclohexyl)-dicarbonate peroxide) was used as a crosslinking agent. The crosslinking agent content was fixed at 1 g per 100 g LLDPE.…”

Section: Manufacturing and Applications Of Xlpe And R-xlpe Productsmentioning

confidence: 99%

Crosslinked polyethylene: A review on the crosslinking techniques, manufacturing methods, applications, and recycling

Ahmad

Rodrigue

2022

Polymer Engineering & Sci

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One of the most used resins in the plastics industry is polyethylene (PE).Although PE has good impact resistance and ductility, its low maximum use temperature and mechanical strength limit some commercial development, especially for load-bearing applications. To get better overall performances, crosslinking is performed to improve the chemical, mechanical, and thermal properties of PE. Although PE can be crosslinked by using various chemical and physical methods, this makes the resulting polymers more difficult to recycle since a three-dimensional (3D) network is created. In this review, we first describe the different crosslinking techniques for PE to manufacture crosslinked PE (XLPE) parts. Then, as more than half of the XLPE-based products are disposed directly after use, we present several options to reuse and recycle these products to overcome this environmental issue and find a sustainable solution. A focus is made on mechanical recycling and de-crosslinking techniques for XLPE to generate recycled-XLPE (r-XLPE). Finally, a conclusion is presented on the current situation and research gaps that must be filled by future works.

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A novel two-step melt blending method to prepare nano-silanized-silica reinforced crosslinked polyethylene (XLPE) nanocomposites

Cited by 12 publications

References 27 publications

The effect of chemical crosslinking on the properties of Rotomolded high density polyethylene

The effect of chemical crosslinking on the properties of Rotomolded high density polyethylene

Dielectric, Mechanical, and Thermal Properties of Crosslinked Polyethylene Nanocomposite with Hybrid Nanofillers

Crosslinked polyethylene: A review on the crosslinking techniques, manufacturing methods, applications, and recycling

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