Study on the Effect of Processing Parameters on Residual Stresses of Injection Molded Micro-Pillar Array
As one of the main methods for fabricating microstructured surfaces, micro-injection molding has the advantages of short cycle time, high production efficiency, and the potential for batch manufacturing. However, non-negligible residual stresses inside the molded part could affect the replication qu...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2022-08-01
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| Series: | Polymers |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2073-4360/14/16/3358 |
| _version_ | 1797408252612313088 |
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| author | Xiaoyu Zhang Tao Ding Wanlin Wang Jiezhen Liu Can Weng |
| author_facet | Xiaoyu Zhang Tao Ding Wanlin Wang Jiezhen Liu Can Weng |
| author_sort | Xiaoyu Zhang |
| collection | DOAJ |
| description | As one of the main methods for fabricating microstructured surfaces, micro-injection molding has the advantages of short cycle time, high production efficiency, and the potential for batch manufacturing. However, non-negligible residual stresses inside the molded part could affect the replication quality, dimensions, and physical properties of the microstructure. Therefore, studying the effects of processing parameters on residual stresses is a necessary prerequisite to ensure the successful fabrication of microstructured parts. In this paper, an injection molding simulation model of micro-pillar arrays was developed using molecular dynamics software, and a series of injection molding experiments were conducted. It was found that increasing the mold temperature and melt temperature can reduce the thermal residual stresses and molecular orientation stresses, and effectively improve the uniformity of residual stress distribution. The increase in the packing pressure can make the shear field of flow more intense and increase the molecular orientation stresses, thus making the residual stresses more severe. |
| first_indexed | 2024-03-09T03:55:44Z |
| format | Article |
| id | doaj.art-90cee583becb4a39b9717aacc535ae43 |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-09T03:55:44Z |
| publishDate | 2022-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-90cee583becb4a39b9717aacc535ae432023-12-03T14:20:22ZengMDPI AGPolymers2073-43602022-08-011416335810.3390/polym14163358Study on the Effect of Processing Parameters on Residual Stresses of Injection Molded Micro-Pillar ArrayXiaoyu Zhang0Tao Ding1Wanlin Wang2Jiezhen Liu3Can Weng4College of Mechanical and Electrical Engineering, Central South University, Changsha 410083, ChinaCollege of Mechanical and Electrical Engineering, Central South University, Changsha 410083, ChinaCollege of Mechanical and Electrical Engineering, Central South University, Changsha 410083, ChinaCollege of Mechanical and Electrical Engineering, Central South University, Changsha 410083, ChinaCollege of Mechanical and Electrical Engineering, Central South University, Changsha 410083, ChinaAs one of the main methods for fabricating microstructured surfaces, micro-injection molding has the advantages of short cycle time, high production efficiency, and the potential for batch manufacturing. However, non-negligible residual stresses inside the molded part could affect the replication quality, dimensions, and physical properties of the microstructure. Therefore, studying the effects of processing parameters on residual stresses is a necessary prerequisite to ensure the successful fabrication of microstructured parts. In this paper, an injection molding simulation model of micro-pillar arrays was developed using molecular dynamics software, and a series of injection molding experiments were conducted. It was found that increasing the mold temperature and melt temperature can reduce the thermal residual stresses and molecular orientation stresses, and effectively improve the uniformity of residual stress distribution. The increase in the packing pressure can make the shear field of flow more intense and increase the molecular orientation stresses, thus making the residual stresses more severe.https://www.mdpi.com/2073-4360/14/16/3358residual stressinjection moldingmicro-pillar arrayprocessing parameter |
| spellingShingle | Xiaoyu Zhang Tao Ding Wanlin Wang Jiezhen Liu Can Weng Study on the Effect of Processing Parameters on Residual Stresses of Injection Molded Micro-Pillar Array Polymers residual stress injection molding micro-pillar array processing parameter |
| title | Study on the Effect of Processing Parameters on Residual Stresses of Injection Molded Micro-Pillar Array |
| title_full | Study on the Effect of Processing Parameters on Residual Stresses of Injection Molded Micro-Pillar Array |
| title_fullStr | Study on the Effect of Processing Parameters on Residual Stresses of Injection Molded Micro-Pillar Array |
| title_full_unstemmed | Study on the Effect of Processing Parameters on Residual Stresses of Injection Molded Micro-Pillar Array |
| title_short | Study on the Effect of Processing Parameters on Residual Stresses of Injection Molded Micro-Pillar Array |
| title_sort | study on the effect of processing parameters on residual stresses of injection molded micro pillar array |
| topic | residual stress injection molding micro-pillar array processing parameter |
| url | https://www.mdpi.com/2073-4360/14/16/3358 |
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