Effect of thermal aging on mechanical performance of GF/PBT composites for high voltage bushing
Abstract The present work aims to study the mechanical performance of glass fiber reinforced polybutylene terephthalate (GF/PBT) composite materials used for high-pressure casing under different thermal aging temperatures. With the increasing demand for durable materials in high-temperature environm...
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| Format: | Article |
| Language: | English |
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Springer
2025-03-01
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| Series: | Discover Applied Sciences |
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| Online Access: | https://doi.org/10.1007/s42452-025-06655-5 |
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| author | Qianli Wang Liying Zhou Xin Shang Tianxiang Duanmu Huimin Ma |
| author_facet | Qianli Wang Liying Zhou Xin Shang Tianxiang Duanmu Huimin Ma |
| author_sort | Qianli Wang |
| collection | DOAJ |
| description | Abstract The present work aims to study the mechanical performance of glass fiber reinforced polybutylene terephthalate (GF/PBT) composite materials used for high-pressure casing under different thermal aging temperatures. With the increasing demand for durable materials in high-temperature environments, it is crucial to understand how thermal aging affects the structural integrity of these composites. Both tensile and three-point bending tests are conducted on the thermally aged GF/PBT samples. Meanwhile, the stress analysis is performed using the finite element method, and the tensile fracture morphology and mode are observed using a scanning electron microscope. The findings delineate a marked reduction in tensile strength by up to 22% and bending strength by up to more than 5% as the aging temperature increased. The specimens exhibit diminished plasticity, while the elastic modulus remains largely invariant (2.4 GPa) across the tested temperature range, demonstrating resilience to thermal aging. High-resolution SEM microscopy of the tensile fracture surfaces confirms that the fracture behavior of the thermally aged composite leans towards brittleness. Moreover, thermal aging accentuates the detachment of glass fibers from the PBT matrix during tension, manifesting as pits on the matrix surface and interfacial discrepancies and fissures between the glass fibers and the matrix. |
| format | Article |
| id | doaj-art-d6a14377cd454db7b96800a7fb474ca0 |
| institution | OA Journals |
| issn | 3004-9261 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Springer |
| record_format | Article |
| series | Discover Applied Sciences |
| spelling | doaj-art-d6a14377cd454db7b96800a7fb474ca02025-08-20T01:57:49ZengSpringerDiscover Applied Sciences3004-92612025-03-017311010.1007/s42452-025-06655-5Effect of thermal aging on mechanical performance of GF/PBT composites for high voltage bushingQianli Wang0Liying Zhou1Xin Shang2Tianxiang Duanmu3Huimin Ma4State Grid Chifeng Power Supply CompanyState Grid East Inner Mongolia Electric Power Research InstituteState Grid East Inner Mongolia Electric Power Research InstituteState Grid East Inner Mongolia Electric Power Research InstituteState Grid East Inner Mongolia Electric Power Research InstituteAbstract The present work aims to study the mechanical performance of glass fiber reinforced polybutylene terephthalate (GF/PBT) composite materials used for high-pressure casing under different thermal aging temperatures. With the increasing demand for durable materials in high-temperature environments, it is crucial to understand how thermal aging affects the structural integrity of these composites. Both tensile and three-point bending tests are conducted on the thermally aged GF/PBT samples. Meanwhile, the stress analysis is performed using the finite element method, and the tensile fracture morphology and mode are observed using a scanning electron microscope. The findings delineate a marked reduction in tensile strength by up to 22% and bending strength by up to more than 5% as the aging temperature increased. The specimens exhibit diminished plasticity, while the elastic modulus remains largely invariant (2.4 GPa) across the tested temperature range, demonstrating resilience to thermal aging. High-resolution SEM microscopy of the tensile fracture surfaces confirms that the fracture behavior of the thermally aged composite leans towards brittleness. Moreover, thermal aging accentuates the detachment of glass fibers from the PBT matrix during tension, manifesting as pits on the matrix surface and interfacial discrepancies and fissures between the glass fibers and the matrix.https://doi.org/10.1007/s42452-025-06655-5GF/PBTThermal agingTensileBendingMechanical performanceFinite element |
| spellingShingle | Qianli Wang Liying Zhou Xin Shang Tianxiang Duanmu Huimin Ma Effect of thermal aging on mechanical performance of GF/PBT composites for high voltage bushing Discover Applied Sciences GF/PBT Thermal aging Tensile Bending Mechanical performance Finite element |
| title | Effect of thermal aging on mechanical performance of GF/PBT composites for high voltage bushing |
| title_full | Effect of thermal aging on mechanical performance of GF/PBT composites for high voltage bushing |
| title_fullStr | Effect of thermal aging on mechanical performance of GF/PBT composites for high voltage bushing |
| title_full_unstemmed | Effect of thermal aging on mechanical performance of GF/PBT composites for high voltage bushing |
| title_short | Effect of thermal aging on mechanical performance of GF/PBT composites for high voltage bushing |
| title_sort | effect of thermal aging on mechanical performance of gf pbt composites for high voltage bushing |
| topic | GF/PBT Thermal aging Tensile Bending Mechanical performance Finite element |
| url | https://doi.org/10.1007/s42452-025-06655-5 |
| work_keys_str_mv | AT qianliwang effectofthermalagingonmechanicalperformanceofgfpbtcompositesforhighvoltagebushing AT liyingzhou effectofthermalagingonmechanicalperformanceofgfpbtcompositesforhighvoltagebushing AT xinshang effectofthermalagingonmechanicalperformanceofgfpbtcompositesforhighvoltagebushing AT tianxiangduanmu effectofthermalagingonmechanicalperformanceofgfpbtcompositesforhighvoltagebushing AT huiminma effectofthermalagingonmechanicalperformanceofgfpbtcompositesforhighvoltagebushing |