Radiation Modification of Commercial Polyvinylidene Fluoride (PVDF) Backsheet Film for Mechanical and Thermal Properties Enhancement

Abstract:

Photovoltaic (PV) modules are supposed to be a reliable source of power for at least 25 years. Its component needs to work very efficiently to ensure electrical panels continue to perform. Backsheet film has been used to help insulating electrical components of PV modules to ensure PV can operate safely and protect them over their servicing life. PV modules are usually produced using encapsulated polymer such as polyvinylidene fluoride (PVDF), ethylene-vinyl acetate (EVA), polyamide (PA) or polyethylene terephthalate (PET). However, under continuous environmental stresses the components of solar panel including backsheet film are prone to malfunctions and failure after long term services. Thus, the service lifetime of PV systems may be shorter than the predicted lifetime. To overcome these issues, efforts have been made to enhance the performance of backsheet films by using radiation crosslinking method. The effects of electron-beam irradiation on mechanical and thermal properties for PVDF commercial backsheet film were studied. It was found that degree of crosslinking increased as irradiation dose increased. Irradiated PVDF has adequate mechanical properties to be used as backsheets for solar cells according to industrial reference. The result of SEM resulted in increased strength and stiffness of irradiated PVDF, which support the result of tensile test. In addition, the TGA analysis showed a good thermal stability with no degradation below 400°C. These studies help in quantifying long-term behavior and estimate a module lifetime especially in specific environment such as tropical country like Malaysia.

• Periodical: Key Engineering Materials (Volume 908)
• Pages: 62-67
• DOI: https://doi.org/10.4028/p-5y49mo
• Online since: January 2022
• Authors: Muhamad Fairush Shaharudin*, Nor Azwin Shukri, Siti Nurul Syafika Sheikh Ibrahim, Mohd Fareqdzul Naim Abd Lah, Nor Azillah Fatimah Othman, Muhammad Hazim Muhammad Sayuti, Nurakram Ilham Soh
• Keywords: Backsheet, Electron-Beam, Radiation, Solar Photovoltaic

References

[1] Hughes R, Plugging into the future - Electric vehicles. Energy Malaysia (2017) 12: 287.

[2] Rahman R, Renewable Energy : An Ideal Solution of. 13.

[3] Jiang P, Fan Y Van, Impacts of COVID-19 on energy demand and consumption : Challenges, lessons and emerging opportunities. 285. Epub ahead of print 2021.

DOI: 10.1016/j.apenergy.2021.116441

[4] Sharma S, Jain KK, Sharma A, Solar Cells : In Research and Applications - A Review. (2015) 1145-1155.

[5] Ma T, Yang H, Lu L, Solar photovoltaic system modeling and performance prediction. Renew Sustain Energy Rev (2014) 36: 304–315.

[6] Felder T, Hu H, Gambogi W, et al., Field study and analysis of backsheet degradation in 450MW + PV installations. Atlas-NIST Work.

[7] Moharram KA, Abd-Elhady MS, Kandil HA, et al., Enhancing the performance of photovoltaic panels by water cooling. Ain Shams Eng J (2013) 4: 869–877.

DOI: 10.1016/j.asej.2013.03.005

[8] Akbarzadeh A, Wadowski T, Heat Pipe-Based Cooling Systems For Photovoltaic Cells Under Concentrated Solar Radiation. (1996).

DOI: 10.1016/1359-4311(95)00012-3

[9] Charfi W, Chaabane M, Mhiri H, et al., Performance evaluation of a solar photovoltaic system. Energy Reports (2018) 4: 400–406.

DOI: 10.1016/j.egyr.2018.06.004

[10] Chin CS, Gao Z, Han M, et al., Enhancing performance of photovoltaic panel by cold plate design with guided channels. IET Renew Power Gener (2020) 14: 1606–1617.

DOI: 10.1049/iet-rpg.2019.1042

[11] Yoshii F, Makuuchi K, Kikukawa S, et al., High‐melt‐strength polypropylene with electron beam irradiation in the presence of polyfunctional monomers. J Appl Polym Sci (1996) 60: 617–623.

DOI: 10.1002/(sici)1097-4628(19960425)60:4<617::aid-app16>3.0.co;2-w

[12] Forsythe JS, Hill DJT, Radiation chemistry of fluoropolymers. Prog Polym Sci (2000) 25: 101–136.

[13] Gao Y, Tan Z, Song Z, et al., Efficient sensitizer-supported electron beam irradiation induced crosslinking of polyvinylidene fluoride for shape memory applications. Polym Test (2021) 99: 107202.

DOI: 10.1016/j.polymertesting.2021.107202

[14] Abdul Rahaman MH, Khandaker MU, Khan ZR, et al., Effect of gamma irradiation on poly(vinyledene difluoride)-lithium bis(oxalato)borate electrolyte. Phys Chem Chem Phys (2014) 16: 11527–11537.

DOI: 10.1039/c4cp01233j

[15] Korostynska O, Arshak K, Morris D, et al., Radiation-induced changes in the electrical properties of carbon filled PVDF thick films. Mater Sci Eng B Solid-State Mater Adv Technol (2007) 141: 115–120.

DOI: 10.1016/j.mseb.2007.06.025

[16] Oreski G, Eder GC, Voronko Y, et al., Performance of PV modules using co-extruded backsheets based on polypropylene. Sol Energy Mater Sol Cells (2021) 223: 110976.

DOI: 10.1016/j.solmat.2021.110976

[17] Tan Z, Fu C, Gao Y, et al., Modifications of Gamma poly (vinylidene fluoride) (γ-PVDF) films by high-energy electron beam irradiation. Radiat Phys Chem (2018) 153: 258–268.

DOI: 10.1016/j.radphyschem.2018.06.051

[18] Jaleh B, Gavar N, Fakhri P, et al., Characteristics of PVDF membranes irradiated by electron beam. Membranes (Basel) (2015) 5: 1–10.

DOI: 10.3390/membranes5010001

[19] Wang Y, Lin H, Xiong Z, et al., A silane-based interfacial crosslinking strategy to design PVDF membranes with versatile surface functions. J Memb Sci (2016) 520: 769–778.

DOI: 10.1016/j.memsci.2016.08.029