Kinetic and chemorheological evaluation on the crosslinking process of peroxide-initiated low-density polyethylene

Li, Jiacai; Si, Zhicheng; Shang, Kai; Feng, Yujun; Wang, Shihang; Li, Shengtao

doi:10.1016/j.polymer.2022.125627

Cited by 6 publications

(4 citation statements)

References 36 publications

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“…The shear viscosity equation is deduced by combining Equations ( 4) and ( 5), as given by Equation (7). Thus, the deformation history tensor equation can be described by Equation (5).…”

Section: Coupling Effect Of Ldpe Molecular Chain Structure and Additi...mentioning

confidence: 99%

“…The shear viscosity equation is deduced by combining Equations ( 4) and ( 5), as given by Equation (7).…”

Section: Coupling Effect Of Ldpe Molecular Chain Structure and Additi...mentioning

confidence: 99%

“…The unentanglement rate and entanglement rate of PEDA materials increase and the entanglement strength decreases, so the additive can reduce the entanglement concentration of macromolecular chains. According to Equation (7), it is concluded that the additives can reduce the shear viscosity of melt, and the higher the shear frequency, the more obvious the reduction degree.…”

Section: Coupling Effect Of Ldpe Molecular Chain Structure and Additi...mentioning

confidence: 99%

“…During the dynamic extrusion process, the rheological behaviors of PEDA melt determine its dynamic extrusion molding and insulation structure under high temperature and shear action [4][5][6]. Given that PEDA materials are made of low-density polyethylene (LDPE) by introducing crosslinking agents and antioxidants, the rheological behaviors of PEDA melt are more mysterious and complex [3,7]. Therefore, it is extremely important to reveal the rheological behaviors of PEDA melt for improving the extrusion molding and insulation structure of HV cables.…”

Section: Introductionmentioning

confidence: 99%

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Coupling Effect of LDPE Molecular Chain Structure and Additives on the Rheological Behaviors of Cable Insulating Materials

Shang

et al. 2023

Polymers

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The rheological behaviors of low-density polyethylene doped with additives (PEDA) determine the dynamic extrusion molding and structure of high-voltage cable insulation. However, the coupling effect of additives and molecular chain structure of LDPE on the rheological behaviors of PEDA is still unclear. Here, for the first time, the rheological behaviors of PEDA under uncross-linked conditions are revealed by experiment and simulation analysis, as well as rheology models. The rheology experiment and molecular simulation results indicate that additives can reduce the shear viscosity of PEDA, but the effect degree of different additives on rheological behaviors is determined by both chemical composition and topological structure. Combined with experiment analysis and the Doi–Edwards model, it demonstrates that the zero-shear viscosity is only determined by LDPE molecular chain structure. Nevertheless, different molecular chain structures of LDPE have different coupling effects with additives on the shear viscosity and non-Newtonian feature. Given this, the rheological behaviors of PEDA are predominant by the molecular chain structure of LDPE and are also affected by additives. This work can provide an important theoretical basis for the optimization and regulation of rheological behaviors of PEDA materials used for high-voltage cable insulation.

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“…The shear viscosity equation is deduced by combining Equations ( 4) and ( 5), as given by Equation (7). Thus, the deformation history tensor equation can be described by Equation (5).…”

Section: Coupling Effect Of Ldpe Molecular Chain Structure and Additi...mentioning

confidence: 99%

“…The shear viscosity equation is deduced by combining Equations ( 4) and ( 5), as given by Equation (7).…”

Section: Coupling Effect Of Ldpe Molecular Chain Structure and Additi...mentioning

confidence: 99%

Section: Coupling Effect Of Ldpe Molecular Chain Structure and Additi...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Coupling Effect of LDPE Molecular Chain Structure and Additives on the Rheological Behaviors of Cable Insulating Materials

Shang

et al. 2023

Polymers

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Temperature-dependent synergistic antioxidants for high-efficiency modulation of anti-scorch performance and crosslinking degree in peroxide-initiated low-density polyethylene

Li,

Shang,

Wang

et al. 2024

Materials Letters

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Kinetic and thermodynamic investigation on diffusion-limited crosslinking reaction behaviors of peroxide-induced low-density polyethylene

Shang

et al. 2023

Polymer Testing

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Kinetic and chemorheological evaluation on the crosslinking process of peroxide-initiated low-density polyethylene

Cited by 6 publications

References 36 publications

Coupling Effect of LDPE Molecular Chain Structure and Additives on the Rheological Behaviors of Cable Insulating Materials

Coupling Effect of LDPE Molecular Chain Structure and Additives on the Rheological Behaviors of Cable Insulating Materials

Temperature-dependent synergistic antioxidants for high-efficiency modulation of anti-scorch performance and crosslinking degree in peroxide-initiated low-density polyethylene

Kinetic and thermodynamic investigation on diffusion-limited crosslinking reaction behaviors of peroxide-induced low-density polyethylene

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