Evaluation of the water absorption content effect on the dielectric properties and tensile strength of polymer composites

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AMINI MOHAMMAD; KHAVANDI ALIREZA

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Journal: Journal of Science and Technology of Composites Year:2019 | Volume:6 | Issue:2 Page(s): 300-309

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Title

Evaluation of the water absorption content effect on the dielectric properties and tensile strength of polymer composites

Author(s)

AMINI MOHAMMAD | KHAVANDI ALIREZA | Issue Writer Certificate

Keywords

Polymer compositeQ2

Water absorptionQ1

Breakdown voltageQ1

Leakage currentQ1

Tensile strengthQ2

MicrostructuralQ1

characterizationQ1

Abstract

Water absorption tests were performed on unidirectional glass/Polymer composite materials used in high voltage composite (nonceramic) insulators. The composites were based on E-glass fibers with polyester resin. The composites were exposed to distilled water at room temperature and their resistance to moisture absorption in terms of the rate of moisture absorption, maximum moisture content and apparent diffusivity was determined. In particular, the effects of specimen geometry (the edge effect) on moisture absorption by the composites were evaluated. It was found that changes in moisture content have a special effect on the mechanical and electrical properties of the composite material. The tensile test was conducted to determine the mechanical properties, Breakdown voltage and the Leakage current were measured to determine the electrical properties and scanning electron microscopy was used to observe the morphological property of Glass Fiber Reinforced Polymer (GFRP) samples. A reduction in both module and Tensile strength was observed with water aging. Module and Tensile strength decline from 491 to 432MPa and from 26. 3 to 21. 5GPa respectively. Furthermore, Water absorbed by composite samples had a detrimental influence on the Breakdown voltage and Leakage current of composite specimens that could be an indicator of degradation. As a result of this degradation, we have a drop of 13V/Cm and an increment of 2μ A in the amount of Breakdown voltage and Leakage current respectively.

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APA: Copy

AMINI, MOHAMMAD, & KHAVANDI, ALIREZA. (2019). Evaluation of the water absorption content effect on the dielectric properties and tensile strength of polymer composites. JOURNAL OF SCIENCE AND TECHNOLOGY OF COMPOSITES (JSTC), 6(2 ), 300-309. SID. https://sid.ir/paper/251601/en

Vancouver: Copy

AMINI MOHAMMAD, KHAVANDI ALIREZA. Evaluation of the water absorption content effect on the dielectric properties and tensile strength of polymer composites. JOURNAL OF SCIENCE AND TECHNOLOGY OF COMPOSITES (JSTC)[Internet]. 2019;6(2 ):300-309. Available from: https://sid.ir/paper/251601/en

IEEE: Copy

MOHAMMAD AMINI, and ALIREZA KHAVANDI, “Evaluation of the water absorption content effect on the dielectric properties and tensile strength of polymer composites,” JOURNAL OF SCIENCE AND TECHNOLOGY OF COMPOSITES (JSTC), vol. 6, no. 2 , pp. 300–309, 2019, [Online]. Available: https://sid.ir/paper/251601/en

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