Fabrication of Micro-Structured Polymer by Micro Injection Molding Based on Precise Micro-Ground Mold Core
Precise micro-grinding machining was proposed to fabricate regular and controllable micro-grooved array structures on the surface of mold cores to realize the mass production and manufacturing of micro-structured polymer components by micro injection molding in this paper. First, the 3D topographies...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2019-04-01
|
| Series: | Micromachines |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2072-666X/10/4/253 |
| _version_ | 1818356958267179008 |
|---|---|
| author | Yanjun Lu Fumin Chen Xiaoyu Wu Chaolan Zhou Yan Lou Liejun Li |
| author_facet | Yanjun Lu Fumin Chen Xiaoyu Wu Chaolan Zhou Yan Lou Liejun Li |
| author_sort | Yanjun Lu |
| collection | DOAJ |
| description | Precise micro-grinding machining was proposed to fabricate regular and controllable micro-grooved array structures on the surface of mold cores to realize the mass production and manufacturing of micro-structured polymer components by micro injection molding in this paper. First, the 3D topographies and section profiles of micro-ground mold cores and micro-formed polymers with different micro-structure parameters were presented. Then, the surface roughness of mold cores and polymers were compared. Next, the relationships between machining accuracy of mold core ground by micro-grinding and filling rates of micro-structured polymer formed by micro injection molding were investigated. Finally, the influences of micro injection molding parameters on the filling rate of micro-structures polymer were investigated. It is shown that the micro-structured polymer can be effectively and rapidly fabricated using the proposed method. The experimental results indicate the highest form accuracy of the micro-grooved mold core and the filling rate of micro-structured polymer can reach to 4.05 µm and 99.30%, respectively. It is found that the filling rate of the micro-structured polymer roughly increased with increasing machining accuracy of the mold core. The injection pressure had the greatest influence on the filling rate of the injection formed polymer, while the melt temperature had the least influence. |
| first_indexed | 2024-12-13T20:05:29Z |
| format | Article |
| id | doaj.art-9a43517b1b1945c7ae5a67d39500bed9 |
| institution | Directory Open Access Journal |
| issn | 2072-666X |
| language | English |
| last_indexed | 2024-12-13T20:05:29Z |
| publishDate | 2019-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Micromachines |
| spelling | doaj.art-9a43517b1b1945c7ae5a67d39500bed92022-12-21T23:33:02ZengMDPI AGMicromachines2072-666X2019-04-0110425310.3390/mi10040253mi10040253Fabrication of Micro-Structured Polymer by Micro Injection Molding Based on Precise Micro-Ground Mold CoreYanjun Lu0Fumin Chen1Xiaoyu Wu2Chaolan Zhou3Yan Lou4Liejun Li5Guangdong Provincial Key Laboratory of Micro/Nano Optomechatronics Engineering, College of Mechatronics and Control Engineering, Shenzhen University, Shenzhen 518060, ChinaGuangdong Provincial Key Laboratory of Micro/Nano Optomechatronics Engineering, College of Mechatronics and Control Engineering, Shenzhen University, Shenzhen 518060, ChinaGuangdong Provincial Key Laboratory of Micro/Nano Optomechatronics Engineering, College of Mechatronics and Control Engineering, Shenzhen University, Shenzhen 518060, ChinaGuangdong Provincial Key Laboratory of Micro/Nano Optomechatronics Engineering, College of Mechatronics and Control Engineering, Shenzhen University, Shenzhen 518060, ChinaGuangdong Provincial Key Laboratory of Micro/Nano Optomechatronics Engineering, College of Mechatronics and Control Engineering, Shenzhen University, Shenzhen 518060, ChinaSchool of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou 510640, ChinaPrecise micro-grinding machining was proposed to fabricate regular and controllable micro-grooved array structures on the surface of mold cores to realize the mass production and manufacturing of micro-structured polymer components by micro injection molding in this paper. First, the 3D topographies and section profiles of micro-ground mold cores and micro-formed polymers with different micro-structure parameters were presented. Then, the surface roughness of mold cores and polymers were compared. Next, the relationships between machining accuracy of mold core ground by micro-grinding and filling rates of micro-structured polymer formed by micro injection molding were investigated. Finally, the influences of micro injection molding parameters on the filling rate of micro-structures polymer were investigated. It is shown that the micro-structured polymer can be effectively and rapidly fabricated using the proposed method. The experimental results indicate the highest form accuracy of the micro-grooved mold core and the filling rate of micro-structured polymer can reach to 4.05 µm and 99.30%, respectively. It is found that the filling rate of the micro-structured polymer roughly increased with increasing machining accuracy of the mold core. The injection pressure had the greatest influence on the filling rate of the injection formed polymer, while the melt temperature had the least influence.https://www.mdpi.com/2072-666X/10/4/253micro-grindingmicro-structuremicro injection moldingfilling ratepolymer |
| spellingShingle | Yanjun Lu Fumin Chen Xiaoyu Wu Chaolan Zhou Yan Lou Liejun Li Fabrication of Micro-Structured Polymer by Micro Injection Molding Based on Precise Micro-Ground Mold Core Micromachines micro-grinding micro-structure micro injection molding filling rate polymer |
| title | Fabrication of Micro-Structured Polymer by Micro Injection Molding Based on Precise Micro-Ground Mold Core |
| title_full | Fabrication of Micro-Structured Polymer by Micro Injection Molding Based on Precise Micro-Ground Mold Core |
| title_fullStr | Fabrication of Micro-Structured Polymer by Micro Injection Molding Based on Precise Micro-Ground Mold Core |
| title_full_unstemmed | Fabrication of Micro-Structured Polymer by Micro Injection Molding Based on Precise Micro-Ground Mold Core |
| title_short | Fabrication of Micro-Structured Polymer by Micro Injection Molding Based on Precise Micro-Ground Mold Core |
| title_sort | fabrication of micro structured polymer by micro injection molding based on precise micro ground mold core |
| topic | micro-grinding micro-structure micro injection molding filling rate polymer |
| url | https://www.mdpi.com/2072-666X/10/4/253 |
| work_keys_str_mv | AT yanjunlu fabricationofmicrostructuredpolymerbymicroinjectionmoldingbasedonprecisemicrogroundmoldcore AT fuminchen fabricationofmicrostructuredpolymerbymicroinjectionmoldingbasedonprecisemicrogroundmoldcore AT xiaoyuwu fabricationofmicrostructuredpolymerbymicroinjectionmoldingbasedonprecisemicrogroundmoldcore AT chaolanzhou fabricationofmicrostructuredpolymerbymicroinjectionmoldingbasedonprecisemicrogroundmoldcore AT yanlou fabricationofmicrostructuredpolymerbymicroinjectionmoldingbasedonprecisemicrogroundmoldcore AT liejunli fabricationofmicrostructuredpolymerbymicroinjectionmoldingbasedonprecisemicrogroundmoldcore |