Radiation effects of a 1.5 MeV electron beam on bisphenol A epoxy resin
Bisphenol A epoxy resin was irradiated in air by a 1.5 MeV electron beam accelerator at dose rates of 18 kGy/h and 2 250 kGy/h to achieve the total absorbed doses of 135 kGy, 270 kGy, 500 kGy, and 1 000 kGy. The effects of the dose rates and the absorbed doses on the surface morphology, chemical str...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | zho |
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Science Press
2022-04-01
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| Series: | Fushe yanjiu yu fushe gongyi xuebao |
| Subjects: | |
| Online Access: | http://www.fs.sinap.ac.cn/thesisDetails#10.11889/j.1000-3436.2021-0203&lang=zh |
| _version_ | 1797900512557793280 |
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| author | JI Zhenyan ZHANG Fan CHEN Hongbing HE Weirong SHEN Rongfang XING Zhe WU Guozhong |
| author_facet | JI Zhenyan ZHANG Fan CHEN Hongbing HE Weirong SHEN Rongfang XING Zhe WU Guozhong |
| author_sort | JI Zhenyan |
| collection | DOAJ |
| description | Bisphenol A epoxy resin was irradiated in air by a 1.5 MeV electron beam accelerator at dose rates of 18 kGy/h and 2 250 kGy/h to achieve the total absorbed doses of 135 kGy, 270 kGy, 500 kGy, and 1 000 kGy. The effects of the dose rates and the absorbed doses on the surface morphology, chemical structure, and thermal properties of the epoxy resin were systematically investigated. The results showed that high dose rates induced vein-like cracks in the epoxy resin, while the total absorbed dose significantly affected the thermal stability and mechanical properties of the resin. Moreover, the epoxy resin exhibited a radiation cross-linking tendency at low absorbed doses, while radiation degradation dominated at high doses. An electron spin resonance analysis indicated that the free radical signals generated during the irradiation were from alkyl radicals and peroxy radicals. The concentration of free radicals was positively correlated with the absorbed dose. Furthermore, the stability of the free radicals in air was studied. The concentration of the generated free radicals reached a plateau at longer storage times. |
| first_indexed | 2024-04-10T08:47:16Z |
| format | Article |
| id | doaj.art-bfc8c0ea932c4908b6296545180d2dd2 |
| institution | Directory Open Access Journal |
| issn | 1000-3436 |
| language | zho |
| last_indexed | 2024-04-10T08:47:16Z |
| publishDate | 2022-04-01 |
| publisher | Science Press |
| record_format | Article |
| series | Fushe yanjiu yu fushe gongyi xuebao |
| spelling | doaj.art-bfc8c0ea932c4908b6296545180d2dd22023-02-22T07:24:00ZzhoScience PressFushe yanjiu yu fushe gongyi xuebao1000-34362022-04-01402182610.11889/j.1000-3436.2021-02031000-3436（2022）02-0018-09Radiation effects of a 1.5 MeV electron beam on bisphenol A epoxy resinJI Zhenyan0ZHANG Fan1CHEN Hongbing2HE Weirong3SHEN Rongfang4XING Zhe5WU Guozhong6Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800,ChinaShanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800,ChinaInstitute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang 621900, ChinaShanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800,ChinaShanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800,ChinaShanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800,ChinaShanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800,ChinaBisphenol A epoxy resin was irradiated in air by a 1.5 MeV electron beam accelerator at dose rates of 18 kGy/h and 2 250 kGy/h to achieve the total absorbed doses of 135 kGy, 270 kGy, 500 kGy, and 1 000 kGy. The effects of the dose rates and the absorbed doses on the surface morphology, chemical structure, and thermal properties of the epoxy resin were systematically investigated. The results showed that high dose rates induced vein-like cracks in the epoxy resin, while the total absorbed dose significantly affected the thermal stability and mechanical properties of the resin. Moreover, the epoxy resin exhibited a radiation cross-linking tendency at low absorbed doses, while radiation degradation dominated at high doses. An electron spin resonance analysis indicated that the free radical signals generated during the irradiation were from alkyl radicals and peroxy radicals. The concentration of free radicals was positively correlated with the absorbed dose. Furthermore, the stability of the free radicals in air was studied. The concentration of the generated free radicals reached a plateau at longer storage times.http://www.fs.sinap.ac.cn/thesisDetails#10.11889/j.1000-3436.2021-0203&lang=zhbisphenol a epoxy resinelectron beam irradiationmechanical propertiesfree radicals |
| spellingShingle | JI Zhenyan ZHANG Fan CHEN Hongbing HE Weirong SHEN Rongfang XING Zhe WU Guozhong Radiation effects of a 1.5 MeV electron beam on bisphenol A epoxy resin Fushe yanjiu yu fushe gongyi xuebao bisphenol a epoxy resin electron beam irradiation mechanical properties free radicals |
| title | Radiation effects of a 1.5 MeV electron beam on bisphenol A epoxy resin |
| title_full | Radiation effects of a 1.5 MeV electron beam on bisphenol A epoxy resin |
| title_fullStr | Radiation effects of a 1.5 MeV electron beam on bisphenol A epoxy resin |
| title_full_unstemmed | Radiation effects of a 1.5 MeV electron beam on bisphenol A epoxy resin |
| title_short | Radiation effects of a 1.5 MeV electron beam on bisphenol A epoxy resin |
| title_sort | radiation effects of a 1 5 mev electron beam on bisphenol a epoxy resin |
| topic | bisphenol a epoxy resin electron beam irradiation mechanical properties free radicals |
| url | http://www.fs.sinap.ac.cn/thesisDetails#10.11889/j.1000-3436.2021-0203&lang=zh |
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