Reuse of Pan-milled P-XLPE cable powder as additive for asphalt to improve thermal stability and decrease processing viscosity

Sun, Fasen; Yang, Shuangqiao; Bai, Shibing; Wang, Qi

doi:10.1016/j.conbuildmat.2021.122593

Cited by 8 publications

(6 citation statements)

References 45 publications

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“…The Literature and Research Structure 2.1.1. The Literature Research on cables can be divided into various categories: cable conductors and their terminals [17][18][19][20][21][22], cable accessories [23][24][25], cable insulators and their aging, water trees, electrical trees [26][27][28], power-cable fault monitoring [29][30][31][32][33], and submarine cables [34][35][36].…”

Section: Methodsmentioning

confidence: 99%

“…We verified the two methods through physical experiments in this study for both conductors and other types of cables in this experiment. Related studies in the literature [17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35][36] are summarized in Table 1. First, we used formulas for friction force and elastic mechanics to construct two methods for calculating the interface pressure of a cable.…”

Section: Methodsmentioning

confidence: 99%

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Method for Measuring Interface Pressure of High-Voltage Cables

et al. 2022

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In high-voltage cables, because of the close fit of their internal structures, interface pressure is generated between conductor and insulator, which affects the performance of the cable. Studies on the calculation and testing of the interfacial pressure of cable conductors are scarce because of the lack of a unified formula and the difficulty of direct measurement. As such, in this study, we devised two methods for calculating and measuring the interface pressure of cable conductors. In the first, we used two physical experimental methods. We used the friction between cable components to perform the calculation and create an experimental method for determining cable conductor interface pressure; on the basis of the equation of the pressure inside and outside a thick-walled cylinder using elasticity mechanics, we calculated the interface pressure on the basis of the measurement of the strain state of the inner and outer diameters of each layer of the cable under different assembly and stripping conditions. We verified the effectiveness of the methods through physical tests and simulations using a YJLW03 1 × 1200 high-voltage cable. Then, we used simulation software ANSYS and SolidWorks to calculate the interface pressure. With different simulation settings, we obtained results regarding interface pressure. Lastly, these simulated values were individually compared with two physical tests, and the error was calculated. Results obtained in the ANSYS environment showed that interface pressure values determined by the geometric interference normal stress, geometric interference pressure, contact interference normal stress, and contact interference pressure methods were 39.75, 36.84, 5.76, and 36.57 MPa, respectively. In SolidWorks software, we used the contact-stress and X-axis normal stress methods. Results were all 37.36 MPa. Then, simulation results and experimental results were compared, and error was calculated. The comparison showed that the X-axis orthogonal stress method was the most accurate. Errors between the X-axis orthogonal stress method and the two physical experiments were 1.5% and 0.48%. Through the above simulation and physical experiments, we determined the interface pressure between conductors and insulators in a high-voltage power cable. We obtained the cable interface pressure value through two kinds of physical experiments, and these two methods were clearly reliable. Simulation experiments showed that using SolidWorks software to simulate this problem obtained better results. Research results provide technical support and reference for the calculation and measurement of cable interface pressure and the optimization of cable performance.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Method for Measuring Interface Pressure of High-Voltage Cables

et al. 2022

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“…The results depicted that XLPE waste affects the properties of fresh and hardened concrete. (Sun et al, 2021) evaluated the chances of using peroxide cross-linked polyethylene (P-XLPE) cable dust of modified asphalt using solid-state shear milling technology. The test P-XLPE powder and asphalt mix melted together formed a special twisted continuous phase.…”

Section: Introductionmentioning

confidence: 99%

Effects of Waste Crossed-Linked Polyethylene Electrical Waste Coating on the Properties of Bitumen

Abdulfatai

Rabi’u

Abdulhakeem

2023

FJS

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The high cost of construction materials and increased axle loads has motivated researchers to seek alternative cost-effective materials for road construction. Studies on the use of waste thermoplastic polyethylene material to improve bitumen properties have been investigated. However, few studies on the use of thermoset polyethylene (cross-linked polyethylene) to modify bitumen have been carried out. This research investigated the use of waste cross-linked polyethylene (XLPE) cable coating on bitumen properties. An FTIR analysis carried out on waste XLPE cable coating revealed that it is predominantly composed of XLPE material. A comparative study carried out on the bitumen properties revealed that the modifier had a decreasing effect on its penetration and ductility but, had an increasing effect on softening point and specific gravity; Hence, a considerable improvement in the temperature susceptibility and stability of the bitumen. The short-term ageing analysis carried out revealed that the modified bitumen can withstand short-term ageing requirements at 2% and 4% by weight of pure bitumen. FTIR analysis carried out on the pure and modified bitumen revealed that changes observed in bitumen properties with increasing modifier content were a result of physical changes and not chemical changes. A one-way ANOVA carried out on the properties of various bitumen content revealed that the modifier had a significant effect on the properties of pure bitumen with increasing bitumen content. The regression models developed properly described the relationship between the modifier content and the bitumen properties as they expressed very good R2 values.

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“…Recently, we proved the feasibility of the use of de-cross-linked P-XLPE in asphalt-based waterproof materials. 25 However, asphalt-based waterproof materials cannot be used at temperatures above 50 °C, which limited the application of waterproof materials. The addition of asphalt into polymer-based waterproof materials offers potential solutions to this challenge.…”

Section: Introductionmentioning

confidence: 99%

“…Asphalt can flow easily at a certain temperature and is compatible with P-XLPE so that the improvement of P-XLPE powder thermoplastic processing can be realized. Recently, we proved the feasibility of the use of de-cross-linked P-XLPE in asphalt-based waterproof materials . However, asphalt-based waterproof materials cannot be used at temperatures above 50 °C, which limited the application of waterproof materials.…”

Section: Introductionmentioning

confidence: 99%

Using Asphalt as an Additive for Waste Cross-Linked Polyethylene Recycled Materials to Improve Thermoplastic Processing

et al. 2022

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With good insulation, cross-linked polyethylene (XLPE) cables are widely used as an important basic material for power transportation. Due to being insoluble and infused, the cross-linked network structure caused a challenge in the recycling of waste XLPE, which is usually treated by incineration and landfilling. In this research, XLPE was part-de-cross-linked via solid-state shear milling (S 3 M) technology, but the resulting powder was difficult to process. In order to improve the re-processability of XLPE, asphalt with a similar structure was added during the thermoplastic processing. To deeply understand the influence of asphalt on the matrix, the compatibility, dispersion, and rheological properties of the composites were characterized. Due to the good compatibility between de-cross-linked XLPE and asphalt, the viscosity of the composites decreased significantly. Some sea-island structures also formed in composites, which increased the toughness of the composites, so the elongation at break reached as high as 322%. The use of asphalt to achieve the processing performance of part-de-cross-linked XLPE powder was highly effective. Furthermore, the prepared composites showed potential application in the field of waterproofing, which could recycle waste XLPE cables on a large scale.

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Reuse of Pan-milled P-XLPE cable powder as additive for asphalt to improve thermal stability and decrease processing viscosity

Cited by 8 publications

References 45 publications

Method for Measuring Interface Pressure of High-Voltage Cables

Method for Measuring Interface Pressure of High-Voltage Cables

Effects of Waste Crossed-Linked Polyethylene Electrical Waste Coating on the Properties of Bitumen

Using Asphalt as an Additive for Waste Cross-Linked Polyethylene Recycled Materials to Improve Thermoplastic Processing

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