Thermal Effect on Thin-Film Formation of the Polymer Sheets by the CO<sub>2</sub> Laser with the Copper Base
A method that makes polymer sheets partially thinner with continuous-wave carbon dioxide (CO<sub>2</sub>) lasers has been developed. This method can create thin polymer films by attaching the polymer sheets to the copper base by vacuum suction through the holes in the base. Applying the...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-08-01
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| Series: | Polymers |
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| Online Access: | https://www.mdpi.com/2073-4360/14/17/3508 |
| _version_ | 1797493597597073408 |
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| author | Nobukazu Kameyama Hiroki Yoshida |
| author_facet | Nobukazu Kameyama Hiroki Yoshida |
| author_sort | Nobukazu Kameyama |
| collection | DOAJ |
| description | A method that makes polymer sheets partially thinner with continuous-wave carbon dioxide (CO<sub>2</sub>) lasers has been developed. This method can create thin polymer films by attaching the polymer sheets to the copper base by vacuum suction through the holes in the base. Applying the method to polypropylene (PP), polyethylene terephthalate (PET), polystyrene (PS), and polytetrafluoroethylene (PTFE), the thin-film formation is confirmed in PP, PET, and PS but not PTFE. These polymers have the similar thermal properties. PP, PET, and PS show fluidity with increased temperature, but PTFE does not have fluidity. These characteristics of the polymers indicate that the fluidity of polymer is the important characteristic for film formation. The experiments with PP and PET sheets of different thickness show that thicker sheets make thicker films. The fluid flow of the molten polymer is considered to form the thin film at the bottom of the groove made by laser scribing. The numerical simulation of the 2D thermal model also indicates the week cooling effects of the base on the film formation and importance of polymer fluidity. The results of Fourier transform infrared spectrometer (FT-IR) show thermal degradation of the films. To decrease the heat’s effect on the films, the polymer sheets should be processed at the highest laser-beam scanning speed that can make thin films. |
| first_indexed | 2024-03-10T01:22:19Z |
| format | Article |
| id | doaj.art-c74ea2c5cf0b4e3db4c6293ea398f775 |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-10T01:22:19Z |
| publishDate | 2022-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-c74ea2c5cf0b4e3db4c6293ea398f7752023-11-23T13:58:03ZengMDPI AGPolymers2073-43602022-08-011417350810.3390/polym14173508Thermal Effect on Thin-Film Formation of the Polymer Sheets by the CO<sub>2</sub> Laser with the Copper BaseNobukazu Kameyama0Hiroki Yoshida1Department of Electrical, Electronic and Computer Engineering, Faculty of Engineering, Gifu University, 1-1 Yanagito, Gifu City 501-1193, JapanDepartment of Electrical, Electronic and Computer Engineering, Faculty of Engineering, Gifu University, 1-1 Yanagito, Gifu City 501-1193, JapanA method that makes polymer sheets partially thinner with continuous-wave carbon dioxide (CO<sub>2</sub>) lasers has been developed. This method can create thin polymer films by attaching the polymer sheets to the copper base by vacuum suction through the holes in the base. Applying the method to polypropylene (PP), polyethylene terephthalate (PET), polystyrene (PS), and polytetrafluoroethylene (PTFE), the thin-film formation is confirmed in PP, PET, and PS but not PTFE. These polymers have the similar thermal properties. PP, PET, and PS show fluidity with increased temperature, but PTFE does not have fluidity. These characteristics of the polymers indicate that the fluidity of polymer is the important characteristic for film formation. The experiments with PP and PET sheets of different thickness show that thicker sheets make thicker films. The fluid flow of the molten polymer is considered to form the thin film at the bottom of the groove made by laser scribing. The numerical simulation of the 2D thermal model also indicates the week cooling effects of the base on the film formation and importance of polymer fluidity. The results of Fourier transform infrared spectrometer (FT-IR) show thermal degradation of the films. To decrease the heat’s effect on the films, the polymer sheets should be processed at the highest laser-beam scanning speed that can make thin films.https://www.mdpi.com/2073-4360/14/17/3508polymerpolystyrenepolypropylenepolyethylene terephthalatelaser processingCO<sub>2</sub> laser |
| spellingShingle | Nobukazu Kameyama Hiroki Yoshida Thermal Effect on Thin-Film Formation of the Polymer Sheets by the CO<sub>2</sub> Laser with the Copper Base Polymers polymer polystyrene polypropylene polyethylene terephthalate laser processing CO<sub>2</sub> laser |
| title | Thermal Effect on Thin-Film Formation of the Polymer Sheets by the CO<sub>2</sub> Laser with the Copper Base |
| title_full | Thermal Effect on Thin-Film Formation of the Polymer Sheets by the CO<sub>2</sub> Laser with the Copper Base |
| title_fullStr | Thermal Effect on Thin-Film Formation of the Polymer Sheets by the CO<sub>2</sub> Laser with the Copper Base |
| title_full_unstemmed | Thermal Effect on Thin-Film Formation of the Polymer Sheets by the CO<sub>2</sub> Laser with the Copper Base |
| title_short | Thermal Effect on Thin-Film Formation of the Polymer Sheets by the CO<sub>2</sub> Laser with the Copper Base |
| title_sort | thermal effect on thin film formation of the polymer sheets by the co sub 2 sub laser with the copper base |
| topic | polymer polystyrene polypropylene polyethylene terephthalate laser processing CO<sub>2</sub> laser |
| url | https://www.mdpi.com/2073-4360/14/17/3508 |
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