Methods for Enhancing the Electrical Properties of Epoxy Matrix Composites

Krajewski, Dariusz; Oleksy, Mariusz; Oliwa, Rafał; Bulanda, Katarzyna; Czech, K. R.; Maslowski, Grzegorz

doi:10.3390/en15134562

Cited by 8 publications

(2 citation statements)

References 104 publications

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“…Many other studies and analyses have been conducted and improvements related to wind turbine component maintenance have been proposed [36][37][38][39]. Part of the research is related to protection against lightning strikes and detection of damage to blades that have suffered a lightning strike [40][41][42], since the annual damage in this area is significant. Based on all these findings, a significant increase in the capacity factor of wind turbines is predicted (Table 3).…”

Section: Wind Turbine Maintenancementioning

confidence: 99%

Wind Turbine Technology Trends

et al. 2022

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The rise in prices of traditional energy sources, the high dependence of many countries on their import, and the associated need for security of supply have led to large investments in new capacity of wind power plants. Although wind power generation is a mature technology and levelized cost of electricity low, there is still room for its improvement. A review of available literature has indicated that wind turbine development in the coming decade will be based on upscaling wind turbines and minor design improvements. These include further improvements in rotor blade aerodynamics, active control of the rotor blade rotation system, and aerodynamic brakes that will lead to increased power generation efficiency. Improvements in system maintenance and early diagnosis of transmission and power-related faults and blade surface damage will reduce wind turbine downtime and increase system reliability and availability. The manufacture of wind turbines with larger dimensions presents problems of transportation and assembly, which are being addressed by manufacturing the blades from segments. Numerical analysis is increasingly being used both in wind turbine efficiency analysis and in stress and vibration analysis. Direct drive is becoming more competitive with traditional power transmission through a gearbox. The trend in offshore wind farms is to increase the size of wind turbines and to place them farther from the coast and in deeper water, which requires new forms of floating foundations. Due to the different work requirements and more difficult conditions of the marine environment, optimization methods for the construction of offshore substructures are currently being developed. There are plans to use 66-kV cables for power transmission from offshore wind farms instead of the current 33-kV cables. Offshore wind farms can play an important role in the transition to a hydrogen economy. In this context, significant capacity is planned for the production of “green” hydrogen by electrolysis from water. First-generation wind turbines are nearing the end of their service life, so strategies are being developed to repower them, extend their life or dismantle and recycle them.

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Section: Wind Turbine Maintenancementioning

confidence: 99%

Wind Turbine Technology Trends

et al. 2022

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“…Compared with pure graphene, metal-supported REDOX graphene has a wider range of applications. [8][9][10] Graphene can improve the mechanical, electrical and thermal properties of epoxy resins. After loading nano-metal materials, electrons can be transferred smoothly between nano-metal and graphene, so the electrochemical performance of the composite material is significantly improved.…”

Section: Introductionmentioning

confidence: 99%

Preparation and mechanical properties of Ni/RGO reinforced epoxy resin composites

Yang,

Song,

Zhao

2024

High Performance Polymers

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The graphene/nanonickel composites(Ni/RGO) were prepared by liquid phase reduction method, and the graphene/nanonickel epoxy composites(Ni/RGO/EP) were prepared by in-situ polymerization method. The glass transition temperature (Tg) of the modified epoxy resin was increased by 19°C compared to EP with 2.1 wt% Ni/RGO loading. The tensile strength and hardness increased by 65% and 18%, the impact strength is increased by 10.053 KJ·m−2 compared to EP, and the shear strength reaches 34.78 MPa for the Ni/RGO/EP with 1.7 wt% Ni/RGO loading. It can be seen, that the addition of Ni/RGO greatly improves the heat resistance and mechanical properties of epoxy resin when the Ni/RGO are evenly dispersed into the epoxy resin by emulsion dispersion method.

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