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Wu B, Zheng X, Xu W, Ren Y, Leng H, Liang L, Zheng D, Chen J, Jiang H. β-Nucleated Polypropylene: Preparation, Nucleating Efficiency, Composite, and Future Prospects. Polymers (Basel) 2023; 15:3107. [PMID: 37514497 PMCID: PMC10383444 DOI: 10.3390/polym15143107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Revised: 07/11/2023] [Accepted: 07/17/2023] [Indexed: 07/30/2023] Open
Abstract
The β-crystals of polypropylene have a metastable crystal form. The formation of β-crystals can improve the toughness and heat resistance of a material. The introduction of a β-nucleating agent, over many other methods, is undoubtedly the most reliable method through which to obtain β-PP. Furthermore, in this study, certain newly developed β-nucleating agents and their compounds in recent years are listed in detail, including the less-mentioned polymer β-nucleating agents and their nucleation characteristics. In addition, the various influencing factors of β-nucleation efficiency, including the polymer matrix and processing conditions, are analyzed in detail and the corresponding improvement measures are summarized. Finally, the composites and synergistic toughening effects are discussed, and three potential future research directions are speculated upon based on previous research.
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Affiliation(s)
- Bo Wu
- School of Chemistry and Chemical Engineering, South China University of Technology, 381 Wushan Road, Tianhe District, Guangzhou 510640, China
- Guangdong Winner New Materials Technology Co., Ltd., Gaoming District, Foshan 528521, China
- The State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, 381 Wushan Road, Tianhe District, Guangzhou 510640, China
| | - Xian Zheng
- Guangdong Winner New Materials Technology Co., Ltd., Gaoming District, Foshan 528521, China
| | - Wenjie Xu
- School of Chemistry and Chemical Engineering, South China University of Technology, 381 Wushan Road, Tianhe District, Guangzhou 510640, China
- The State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, 381 Wushan Road, Tianhe District, Guangzhou 510640, China
| | - Yanwei Ren
- School of Chemistry and Chemical Engineering, South China University of Technology, 381 Wushan Road, Tianhe District, Guangzhou 510640, China
- The State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, 381 Wushan Road, Tianhe District, Guangzhou 510640, China
| | - Haiqiang Leng
- Guangdong Winner New Materials Technology Co., Ltd., Gaoming District, Foshan 528521, China
| | - Linzhi Liang
- Guangdong Winner New Materials Technology Co., Ltd., Gaoming District, Foshan 528521, China
| | - De Zheng
- Guangdong Winner New Materials Technology Co., Ltd., Gaoming District, Foshan 528521, China
| | - Jun Chen
- Guangdong Winner New Materials Technology Co., Ltd., Gaoming District, Foshan 528521, China
| | - Huanfeng Jiang
- School of Chemistry and Chemical Engineering, South China University of Technology, 381 Wushan Road, Tianhe District, Guangzhou 510640, China
- The State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, 381 Wushan Road, Tianhe District, Guangzhou 510640, China
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Ji H, Wang Y, Zhu H, Ni H, Ma Y, Xie L. Research on a strengthening method and mechanism of expanding polypropylene pipe. POLYM ENG SCI 2021. [DOI: 10.1002/pen.25749] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Huajian Ji
- School of Mechanical and Power Engineering East China University of Science and Technology Shanghai China
| | - Yu Wang
- School of Mechanical and Power Engineering East China University of Science and Technology Shanghai China
| | - Huihao Zhu
- School of Mechanical and Power Engineering East China University of Science and Technology Shanghai China
| | - Hui Ni
- School of Mechanical and Power Engineering East China University of Science and Technology Shanghai China
| | - Yulu Ma
- School of Mechanical and Power Engineering East China University of Science and Technology Shanghai China
| | - Linsheng Xie
- School of Mechanical and Power Engineering East China University of Science and Technology Shanghai China
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Prompt Determination of the Mechanical Properties of Industrial Polypropylene Sandwich Pipes. MATERIALS 2021; 14:ma14092128. [PMID: 33922316 PMCID: PMC8122841 DOI: 10.3390/ma14092128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Revised: 04/19/2021] [Accepted: 04/19/2021] [Indexed: 11/17/2022]
Abstract
A simple and prompt method to determine the mechanical properties of industrial multilayer extrusion polypropylene pipes for a gravity sewer network is suggested. The engineering formulas included for calculating the permissible thickness and relative position of a foam core in the pipes are based on a linear-elastic approximation and the rule of mixtures. The applicability of the approximation was justified experimentally during investigation of the effective tensile characteristics of single- and multilayer pipes and each layer specimen by using traditional tests and finite-element calculations. The results obtained were used to formulate engineering recommendations for calculations of this type.
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