Relaxation Model of the Relations between the Elastic Modulus and Thermal Expansivity of Thermosetting Polymers and FRPs
This research was completed in the development of studies devoted to relations between the elastic modulus (MoE) and thermal expansivity (CTe) of different materials. This study, based on experimental data, confirmed the models of the relations between MoE and CTe under normal and heating temperatur...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-01-01
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| Series: | Polymers |
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| Online Access: | https://www.mdpi.com/2073-4360/15/3/699 |
| _version_ | 1797623421904879616 |
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| author | Alexander Korolev Maxim Mishnev Dmitrii Ulrikh Alexander Zadorin |
| author_facet | Alexander Korolev Maxim Mishnev Dmitrii Ulrikh Alexander Zadorin |
| author_sort | Alexander Korolev |
| collection | DOAJ |
| description | This research was completed in the development of studies devoted to relations between the elastic modulus (MoE) and thermal expansivity (CTe) of different materials. This study, based on experimental data, confirmed the models of the relations between MoE and CTe under normal and heating temperatures for thermosetting epoxy polymers and glass-fiber FRPs in two variants (unfilled and filled by mineral additives), after the usual glassing and prolonged thermal conditioning (thermo-relaxation). The experiment was based on dilatometric and elastic deformation testing. Two models of MoE/CTe were tested: Barker’s model and our authors relaxation model (MoE = f(CTe)), which is based on previous modelling of the non-linearity of the physical properties of polymers’ supramolecular structures. The result show that the models’ constants depend on composition; Barker’s model is applicable only to polymers with satisfying agreement degrees in the range 10–20%; our model is applicable to polymers and FRPs with satisfying agreement degrees in the range of 6–18%. |
| first_indexed | 2024-03-11T09:28:46Z |
| format | Article |
| id | doaj.art-b8a7f3b5bb3045759c95818150ba57e4 |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-11T09:28:46Z |
| publishDate | 2023-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-b8a7f3b5bb3045759c95818150ba57e42023-11-16T17:49:19ZengMDPI AGPolymers2073-43602023-01-0115369910.3390/polym15030699Relaxation Model of the Relations between the Elastic Modulus and Thermal Expansivity of Thermosetting Polymers and FRPsAlexander Korolev0Maxim Mishnev1Dmitrii Ulrikh2Alexander Zadorin3Department of Building Construction and Structures, South Ural State University, 454080 Chelyabinsk, RussiaDepartment of Building Construction and Structures, South Ural State University, 454080 Chelyabinsk, RussiaDepartment of Town Planning, Engineering Systems, and Networks, South Ural State University, 454080 Chelyabinsk, RussiaDepartment of Building Construction and Structures, South Ural State University, 454080 Chelyabinsk, RussiaThis research was completed in the development of studies devoted to relations between the elastic modulus (MoE) and thermal expansivity (CTe) of different materials. This study, based on experimental data, confirmed the models of the relations between MoE and CTe under normal and heating temperatures for thermosetting epoxy polymers and glass-fiber FRPs in two variants (unfilled and filled by mineral additives), after the usual glassing and prolonged thermal conditioning (thermo-relaxation). The experiment was based on dilatometric and elastic deformation testing. Two models of MoE/CTe were tested: Barker’s model and our authors relaxation model (MoE = f(CTe)), which is based on previous modelling of the non-linearity of the physical properties of polymers’ supramolecular structures. The result show that the models’ constants depend on composition; Barker’s model is applicable only to polymers with satisfying agreement degrees in the range 10–20%; our model is applicable to polymers and FRPs with satisfying agreement degrees in the range of 6–18%.https://www.mdpi.com/2073-4360/15/3/699polymerspolymer compositesglass-fiber-reinforced plasticselasticitymodulus of elasticitythermal expansivity |
| spellingShingle | Alexander Korolev Maxim Mishnev Dmitrii Ulrikh Alexander Zadorin Relaxation Model of the Relations between the Elastic Modulus and Thermal Expansivity of Thermosetting Polymers and FRPs Polymers polymers polymer composites glass-fiber-reinforced plastics elasticity modulus of elasticity thermal expansivity |
| title | Relaxation Model of the Relations between the Elastic Modulus and Thermal Expansivity of Thermosetting Polymers and FRPs |
| title_full | Relaxation Model of the Relations between the Elastic Modulus and Thermal Expansivity of Thermosetting Polymers and FRPs |
| title_fullStr | Relaxation Model of the Relations between the Elastic Modulus and Thermal Expansivity of Thermosetting Polymers and FRPs |
| title_full_unstemmed | Relaxation Model of the Relations between the Elastic Modulus and Thermal Expansivity of Thermosetting Polymers and FRPs |
| title_short | Relaxation Model of the Relations between the Elastic Modulus and Thermal Expansivity of Thermosetting Polymers and FRPs |
| title_sort | relaxation model of the relations between the elastic modulus and thermal expansivity of thermosetting polymers and frps |
| topic | polymers polymer composites glass-fiber-reinforced plastics elasticity modulus of elasticity thermal expansivity |
| url | https://www.mdpi.com/2073-4360/15/3/699 |
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