Orientation morphology evolution and mechanical properties of injection molded thermoplastic polyurethane
The effects of melt flow on the orientation evolution, residual stress and mechanical properties of thermoplastic polyurethane (TPU) during injection molding were studied by birefringence, small angle X-ray scattering (SAXS) and wide angle X-ray scattering (WAXS). The birefringence results show that...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | zho |
| Published: |
Journal of Materials Engineering
2021-12-01
|
| Series: | Cailiao gongcheng |
| Subjects: | |
| Online Access: | http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2021.000121 |
| _version_ | 1797972823955734528 |
|---|---|
| author | XIANG Ning ZHANG Xiao-wen GE Yong DING Yao ZHENG Meng-yao YAN Yue |
| author_facet | XIANG Ning ZHANG Xiao-wen GE Yong DING Yao ZHENG Meng-yao YAN Yue |
| author_sort | XIANG Ning |
| collection | DOAJ |
| description | The effects of melt flow on the orientation evolution, residual stress and mechanical properties of thermoplastic polyurethane (TPU) during injection molding were studied by birefringence, small angle X-ray scattering (SAXS) and wide angle X-ray scattering (WAXS). The birefringence results show that the residual stress is decreased along the melt flow direction. The hard segments of TPU molecular chains are oriented along the melt flow direction, while the hard domains are oriented perpendicular to the melt flow direction according to the results of SAXS and WAXS. The tensile properties of TPU parts show obvious differences along the melt flow direction and perpendicular to the melt flow direction. The tensile strength of the middle region of the part is the highest because the orientation degree of hard segment and hard domain is the highest in the middle region of the part, and the orientation of hard segment and hard domain is helpful to improve the tensile strength. |
| first_indexed | 2024-04-11T03:54:34Z |
| format | Article |
| id | doaj.art-c4f08e672c944539ab7f6dfd4a33eb0b |
| institution | Directory Open Access Journal |
| issn | 1001-4381 |
| language | zho |
| last_indexed | 2024-04-11T03:54:34Z |
| publishDate | 2021-12-01 |
| publisher | Journal of Materials Engineering |
| record_format | Article |
| series | Cailiao gongcheng |
| spelling | doaj.art-c4f08e672c944539ab7f6dfd4a33eb0b2023-01-02T01:11:42ZzhoJournal of Materials EngineeringCailiao gongcheng1001-43812021-12-01491215616310.11868/j.issn.1001-4381.2021.0001211639966371555-1254182782Orientation morphology evolution and mechanical properties of injection molded thermoplastic polyurethaneXIANG Ning0ZHANG Xiao-wen1GE Yong2DING Yao3ZHENG Meng-yao4YAN Yue5AECC Beijing Institute of Aeronautical Materials, Beijing 100095, ChinaAECC Beijing Institute of Aeronautical Materials, Beijing 100095, ChinaAECC Beijing Institute of Aeronautical Materials, Beijing 100095, ChinaAECC Beijing Institute of Aeronautical Materials, Beijing 100095, ChinaAECC Beijing Institute of Aeronautical Materials, Beijing 100095, ChinaAECC Beijing Institute of Aeronautical Materials, Beijing 100095, ChinaThe effects of melt flow on the orientation evolution, residual stress and mechanical properties of thermoplastic polyurethane (TPU) during injection molding were studied by birefringence, small angle X-ray scattering (SAXS) and wide angle X-ray scattering (WAXS). The birefringence results show that the residual stress is decreased along the melt flow direction. The hard segments of TPU molecular chains are oriented along the melt flow direction, while the hard domains are oriented perpendicular to the melt flow direction according to the results of SAXS and WAXS. The tensile properties of TPU parts show obvious differences along the melt flow direction and perpendicular to the melt flow direction. The tensile strength of the middle region of the part is the highest because the orientation degree of hard segment and hard domain is the highest in the middle region of the part, and the orientation of hard segment and hard domain is helpful to improve the tensile strength.http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2021.000121thermoplastic polyurethaneinjection moldingorientation degreeresidual stresstensile property |
| spellingShingle | XIANG Ning ZHANG Xiao-wen GE Yong DING Yao ZHENG Meng-yao YAN Yue Orientation morphology evolution and mechanical properties of injection molded thermoplastic polyurethane Cailiao gongcheng thermoplastic polyurethane injection molding orientation degree residual stress tensile property |
| title | Orientation morphology evolution and mechanical properties of injection molded thermoplastic polyurethane |
| title_full | Orientation morphology evolution and mechanical properties of injection molded thermoplastic polyurethane |
| title_fullStr | Orientation morphology evolution and mechanical properties of injection molded thermoplastic polyurethane |
| title_full_unstemmed | Orientation morphology evolution and mechanical properties of injection molded thermoplastic polyurethane |
| title_short | Orientation morphology evolution and mechanical properties of injection molded thermoplastic polyurethane |
| title_sort | orientation morphology evolution and mechanical properties of injection molded thermoplastic polyurethane |
| topic | thermoplastic polyurethane injection molding orientation degree residual stress tensile property |
| url | http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2021.000121 |
| work_keys_str_mv | AT xiangning orientationmorphologyevolutionandmechanicalpropertiesofinjectionmoldedthermoplasticpolyurethane AT zhangxiaowen orientationmorphologyevolutionandmechanicalpropertiesofinjectionmoldedthermoplasticpolyurethane AT geyong orientationmorphologyevolutionandmechanicalpropertiesofinjectionmoldedthermoplasticpolyurethane AT dingyao orientationmorphologyevolutionandmechanicalpropertiesofinjectionmoldedthermoplasticpolyurethane AT zhengmengyao orientationmorphologyevolutionandmechanicalpropertiesofinjectionmoldedthermoplasticpolyurethane AT yanyue orientationmorphologyevolutionandmechanicalpropertiesofinjectionmoldedthermoplasticpolyurethane |