Improved Rotational Foam Molding Properties of Tailored Polyethylene Blends with Higher Crystallization Temperature and Viscosity-Temperature Sensitivity
Rotational foam molding has attracted more and more attention due to the inexpensive machines required, low residual stresses, and flexible design for special and high-value-added applications. However, it is a great challenge to control cell sizes and morphology because of its coalesce and collapse...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-08-01
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| Series: | Polymers |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2073-4360/14/17/3486 |
| _version_ | 1797493557421932544 |
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| author | Xuelian Chen Qigu Huang |
| author_facet | Xuelian Chen Qigu Huang |
| author_sort | Xuelian Chen |
| collection | DOAJ |
| description | Rotational foam molding has attracted more and more attention due to the inexpensive machines required, low residual stresses, and flexible design for special and high-value-added applications. However, it is a great challenge to control cell sizes and morphology because of its coalesce and collapse during prolonged heating or at different temperatures. A novel tailored polyethylene blend with a unique chain structure for rotational foam molding was creatively proposed and demonstrated, and the effects of crystallization temperature and viscosity–temperature sensitivity on foaming were also investigated. The polyethylene blends with few chain branches in the low-molecular-weight part and many chain branches in the high-molecular-weight part effectively improved the crystallization temperature and the viscosity–temperature sensitivity for better prevention of coalesce and collapse during the foam-shaping stage. |
| first_indexed | 2024-03-10T01:21:42Z |
| format | Article |
| id | doaj.art-2c60c66c740e41c3b68f8b4d31a75b00 |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-10T01:21:42Z |
| publishDate | 2022-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-2c60c66c740e41c3b68f8b4d31a75b002023-11-23T13:57:40ZengMDPI AGPolymers2073-43602022-08-011417348610.3390/polym14173486Improved Rotational Foam Molding Properties of Tailored Polyethylene Blends with Higher Crystallization Temperature and Viscosity-Temperature SensitivityXuelian Chen0Qigu Huang1State Key Laboratory of Chemical Resource Engineering, Key Laboratory of Carbon Fiber and Functional Polymers, Ministry of Education, The College of Material Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, ChinaState Key Laboratory of Chemical Resource Engineering, Key Laboratory of Carbon Fiber and Functional Polymers, Ministry of Education, The College of Material Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, ChinaRotational foam molding has attracted more and more attention due to the inexpensive machines required, low residual stresses, and flexible design for special and high-value-added applications. However, it is a great challenge to control cell sizes and morphology because of its coalesce and collapse during prolonged heating or at different temperatures. A novel tailored polyethylene blend with a unique chain structure for rotational foam molding was creatively proposed and demonstrated, and the effects of crystallization temperature and viscosity–temperature sensitivity on foaming were also investigated. The polyethylene blends with few chain branches in the low-molecular-weight part and many chain branches in the high-molecular-weight part effectively improved the crystallization temperature and the viscosity–temperature sensitivity for better prevention of coalesce and collapse during the foam-shaping stage.https://www.mdpi.com/2073-4360/14/17/3486polyethylenerotational moldingfoamscrystallizationviscosity–temperature sensitivitymorphology |
| spellingShingle | Xuelian Chen Qigu Huang Improved Rotational Foam Molding Properties of Tailored Polyethylene Blends with Higher Crystallization Temperature and Viscosity-Temperature Sensitivity Polymers polyethylene rotational molding foams crystallization viscosity–temperature sensitivity morphology |
| title | Improved Rotational Foam Molding Properties of Tailored Polyethylene Blends with Higher Crystallization Temperature and Viscosity-Temperature Sensitivity |
| title_full | Improved Rotational Foam Molding Properties of Tailored Polyethylene Blends with Higher Crystallization Temperature and Viscosity-Temperature Sensitivity |
| title_fullStr | Improved Rotational Foam Molding Properties of Tailored Polyethylene Blends with Higher Crystallization Temperature and Viscosity-Temperature Sensitivity |
| title_full_unstemmed | Improved Rotational Foam Molding Properties of Tailored Polyethylene Blends with Higher Crystallization Temperature and Viscosity-Temperature Sensitivity |
| title_short | Improved Rotational Foam Molding Properties of Tailored Polyethylene Blends with Higher Crystallization Temperature and Viscosity-Temperature Sensitivity |
| title_sort | improved rotational foam molding properties of tailored polyethylene blends with higher crystallization temperature and viscosity temperature sensitivity |
| topic | polyethylene rotational molding foams crystallization viscosity–temperature sensitivity morphology |
| url | https://www.mdpi.com/2073-4360/14/17/3486 |
| work_keys_str_mv | AT xuelianchen improvedrotationalfoammoldingpropertiesoftailoredpolyethyleneblendswithhighercrystallizationtemperatureandviscositytemperaturesensitivity AT qiguhuang improvedrotationalfoammoldingpropertiesoftailoredpolyethyleneblendswithhighercrystallizationtemperatureandviscositytemperaturesensitivity |