Study on diffusion mechanism and failure behavior of epoxy coatings focusing on synergistic effect of temperature and water molecules
The research on the diffusion of water in coatings has been a hot topic in many fields, such as chemistry, coating structure and hydrogen bonding. In this paper, DGEBA epoxy coating was used as a sample to explore the diffusion process of 3 wt.% NaCl solution at different temperatures. Two-stage dif...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Taylor & Francis Group
2021-01-01
|
| Series: | Designed Monomers and Polymers |
| Subjects: | |
| Online Access: | http://dx.doi.org/10.1080/15685551.2021.1904581 |
| _version_ | 1811306168833802240 |
|---|---|
| author | Chao Yang Qing Han Anquan Wang Wei Han Liang Sun Laishun Yang |
| author_facet | Chao Yang Qing Han Anquan Wang Wei Han Liang Sun Laishun Yang |
| author_sort | Chao Yang |
| collection | DOAJ |
| description | The research on the diffusion of water in coatings has been a hot topic in many fields, such as chemistry, coating structure and hydrogen bonding. In this paper, DGEBA epoxy coating was used as a sample to explore the diffusion process of 3 wt.% NaCl solution at different temperatures. Two-stage diffusion was established by immersion experiment and MD simulation. The synergistic effect of temperature and water on DGEBA properties was revealed by FTIR method and adsorption-desorption cyclic testing. The results showed that as the temperature increased, the saturation water content in coatings increased. At different temperatures, the diffusion process of water presented two-phase characteristics, and the influence of temperature on the diffusion process was mainly manifested in the cross-linking density at higher locations. Based on the variation law of swelling coefficient in per unit time (24 h), the conditions for water-coating interaction and formation of water clusters in this paper were proposed. The synergistic effect of water and temperature on DGEBA properties was reflected in two aspects: at lower temperature (20 °C), water would only change the physical structure of the coatings, while the water broke the DGEBA chains at higher temperature (60 °C). |
| first_indexed | 2024-04-13T08:39:33Z |
| format | Article |
| id | doaj.art-04d00d4bd81440e0aa1cb4b066c86508 |
| institution | Directory Open Access Journal |
| issn | 1385-772X 1568-5551 |
| language | English |
| last_indexed | 2024-04-13T08:39:33Z |
| publishDate | 2021-01-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Designed Monomers and Polymers |
| spelling | doaj.art-04d00d4bd81440e0aa1cb4b066c865082022-12-22T02:53:56ZengTaylor & Francis GroupDesigned Monomers and Polymers1385-772X1568-55512021-01-01241738810.1080/15685551.2021.19045811904581Study on diffusion mechanism and failure behavior of epoxy coatings focusing on synergistic effect of temperature and water moleculesChao Yang0Qing Han1Anquan Wang2Wei Han3Liang Sun4Laishun Yang5Postdoctoral Scientific Research Workstation of Shengli Oilfield Company, SINOPECSINOPECSINOPECSINOPECSINOPECShandong University of Science and TechnologyThe research on the diffusion of water in coatings has been a hot topic in many fields, such as chemistry, coating structure and hydrogen bonding. In this paper, DGEBA epoxy coating was used as a sample to explore the diffusion process of 3 wt.% NaCl solution at different temperatures. Two-stage diffusion was established by immersion experiment and MD simulation. The synergistic effect of temperature and water on DGEBA properties was revealed by FTIR method and adsorption-desorption cyclic testing. The results showed that as the temperature increased, the saturation water content in coatings increased. At different temperatures, the diffusion process of water presented two-phase characteristics, and the influence of temperature on the diffusion process was mainly manifested in the cross-linking density at higher locations. Based on the variation law of swelling coefficient in per unit time (24 h), the conditions for water-coating interaction and formation of water clusters in this paper were proposed. The synergistic effect of water and temperature on DGEBA properties was reflected in two aspects: at lower temperature (20 °C), water would only change the physical structure of the coatings, while the water broke the DGEBA chains at higher temperature (60 °C).http://dx.doi.org/10.1080/15685551.2021.1904581temperatureepoxy coatingstwo-stage diffusionadsorption-desorption cyclesswelling coefficient |
| spellingShingle | Chao Yang Qing Han Anquan Wang Wei Han Liang Sun Laishun Yang Study on diffusion mechanism and failure behavior of epoxy coatings focusing on synergistic effect of temperature and water molecules Designed Monomers and Polymers temperature epoxy coatings two-stage diffusion adsorption-desorption cycles swelling coefficient |
| title | Study on diffusion mechanism and failure behavior of epoxy coatings focusing on synergistic effect of temperature and water molecules |
| title_full | Study on diffusion mechanism and failure behavior of epoxy coatings focusing on synergistic effect of temperature and water molecules |
| title_fullStr | Study on diffusion mechanism and failure behavior of epoxy coatings focusing on synergistic effect of temperature and water molecules |
| title_full_unstemmed | Study on diffusion mechanism and failure behavior of epoxy coatings focusing on synergistic effect of temperature and water molecules |
| title_short | Study on diffusion mechanism and failure behavior of epoxy coatings focusing on synergistic effect of temperature and water molecules |
| title_sort | study on diffusion mechanism and failure behavior of epoxy coatings focusing on synergistic effect of temperature and water molecules |
| topic | temperature epoxy coatings two-stage diffusion adsorption-desorption cycles swelling coefficient |
| url | http://dx.doi.org/10.1080/15685551.2021.1904581 |
| work_keys_str_mv | AT chaoyang studyondiffusionmechanismandfailurebehaviorofepoxycoatingsfocusingonsynergisticeffectoftemperatureandwatermolecules AT qinghan studyondiffusionmechanismandfailurebehaviorofepoxycoatingsfocusingonsynergisticeffectoftemperatureandwatermolecules AT anquanwang studyondiffusionmechanismandfailurebehaviorofepoxycoatingsfocusingonsynergisticeffectoftemperatureandwatermolecules AT weihan studyondiffusionmechanismandfailurebehaviorofepoxycoatingsfocusingonsynergisticeffectoftemperatureandwatermolecules AT liangsun studyondiffusionmechanismandfailurebehaviorofepoxycoatingsfocusingonsynergisticeffectoftemperatureandwatermolecules AT laishunyang studyondiffusionmechanismandfailurebehaviorofepoxycoatingsfocusingonsynergisticeffectoftemperatureandwatermolecules |