Preparation of Crystal Violet Lactone Complex and Its Effect on Discoloration of Metal Surface Coating
In this paper, a thermochromic complex was prepared from crystal violet lactone (CVL), bisphenol A (BPA) and tetradecanol. The color-changing temperature of the color-changing compound was found to be 25 °C by orthogonal experiment. Microcapsules coated with a thermochromic compound were added into...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-10-01
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| Series: | Polymers |
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| Online Access: | https://www.mdpi.com/2073-4360/14/20/4443 |
| _version_ | 1797470159912304640 |
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| author | Wenbo Li Xiaoxing Yan Wenting Zhao |
| author_facet | Wenbo Li Xiaoxing Yan Wenting Zhao |
| author_sort | Wenbo Li |
| collection | DOAJ |
| description | In this paper, a thermochromic complex was prepared from crystal violet lactone (CVL), bisphenol A (BPA) and tetradecanol. The color-changing temperature of the color-changing compound was found to be 25 °C by orthogonal experiment. Microcapsules coated with a thermochromic compound were added into alkyd resin at different mass concentrations. With the increase in temperature and mass fraction of microcapsules in the coating, the color difference of the coating showed an upward trend. The highest variation in the coating’s color difference occurs when there were 10% microcapsules. When the mass fraction of microcapsules was 15.0~25.0%, there was little change to the gloss of the coating. With the increase in the mass fraction of the coating microcapsules, the hardness of the coating gradually increased. The hardness was at its best when the microcapsule concentration was 25%. When the microcapsule concentration was 20%, the impact resistance of the coating was at its best. The coating had good cold-liquid resistance to acetic acid, ethanol, and NaCl solutions, and there was basically no mark on the coating surface before and after the cold-liquid-resistance test. The addition of microcapsules did not change the chemical composition of the coating, and it improved the performance of the coating. When the microcapsule concentration was 10%, the overall performance of the coating was at its best, which laid the technical foundation for thermochromic coating on the metal surface. |
| first_indexed | 2024-03-09T19:32:48Z |
| format | Article |
| id | doaj.art-837dfbdf8270448f8d9308e9576499b8 |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-09T19:32:48Z |
| publishDate | 2022-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-837dfbdf8270448f8d9308e9576499b82023-11-24T02:09:33ZengMDPI AGPolymers2073-43602022-10-011420444310.3390/polym14204443Preparation of Crystal Violet Lactone Complex and Its Effect on Discoloration of Metal Surface CoatingWenbo Li0Xiaoxing Yan1Wenting Zhao2Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing 210037, ChinaCo-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing 210037, ChinaCo-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing 210037, ChinaIn this paper, a thermochromic complex was prepared from crystal violet lactone (CVL), bisphenol A (BPA) and tetradecanol. The color-changing temperature of the color-changing compound was found to be 25 °C by orthogonal experiment. Microcapsules coated with a thermochromic compound were added into alkyd resin at different mass concentrations. With the increase in temperature and mass fraction of microcapsules in the coating, the color difference of the coating showed an upward trend. The highest variation in the coating’s color difference occurs when there were 10% microcapsules. When the mass fraction of microcapsules was 15.0~25.0%, there was little change to the gloss of the coating. With the increase in the mass fraction of the coating microcapsules, the hardness of the coating gradually increased. The hardness was at its best when the microcapsule concentration was 25%. When the microcapsule concentration was 20%, the impact resistance of the coating was at its best. The coating had good cold-liquid resistance to acetic acid, ethanol, and NaCl solutions, and there was basically no mark on the coating surface before and after the cold-liquid-resistance test. The addition of microcapsules did not change the chemical composition of the coating, and it improved the performance of the coating. When the microcapsule concentration was 10%, the overall performance of the coating was at its best, which laid the technical foundation for thermochromic coating on the metal surface.https://www.mdpi.com/2073-4360/14/20/4443thermochromic compoundpreparation technologycoating process |
| spellingShingle | Wenbo Li Xiaoxing Yan Wenting Zhao Preparation of Crystal Violet Lactone Complex and Its Effect on Discoloration of Metal Surface Coating Polymers thermochromic compound preparation technology coating process |
| title | Preparation of Crystal Violet Lactone Complex and Its Effect on Discoloration of Metal Surface Coating |
| title_full | Preparation of Crystal Violet Lactone Complex and Its Effect on Discoloration of Metal Surface Coating |
| title_fullStr | Preparation of Crystal Violet Lactone Complex and Its Effect on Discoloration of Metal Surface Coating |
| title_full_unstemmed | Preparation of Crystal Violet Lactone Complex and Its Effect on Discoloration of Metal Surface Coating |
| title_short | Preparation of Crystal Violet Lactone Complex and Its Effect on Discoloration of Metal Surface Coating |
| title_sort | preparation of crystal violet lactone complex and its effect on discoloration of metal surface coating |
| topic | thermochromic compound preparation technology coating process |
| url | https://www.mdpi.com/2073-4360/14/20/4443 |
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