Citation: Fang-zhen An, Xue-qin Gao, Jun Lei, Cong Deng, Zhong-ming Li, Kai-zhi Shen. Vibration Assisted Extrusion of Polypropylene[J]. Chinese Journal of Polymer Science, ;2015, 33(5): 688-696. doi: 10.1007/s10118-015-1617-z shu

Vibration Assisted Extrusion of Polypropylene

1.
Department of Polymer Science and Materials, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
2.
Analytical and Testing Center, Sichuan University, Chengdu 610065, China

Received Date: 17 August 2014
Revised Date: 10 September 2014

Fund Project: This work was financially supported by the National Natural Science Foundation of China (Nos. 51033004 and 51121001) and China Postdoctoral Science Foundation (No. 2013M540711).

A new homemade apparatus, i.e. vibration assisted extrusion equipment, is employed to extrude polypropylene. Vibration assisted extrusion is based on the application of a specific macroscopic shear vibration field. Reduction of apparent melt viscosity as a function of vibration frequency is measured at different screw speeds and die temperatures. The effect of the process is investigated by performing mechanical tests, differential scanning calorimetry studies, polarized light microscopy and wide-angle X-ray diffraction. It is found that, compared with conventional extrusion, vibration assisted extrusion could effectively improve the rheological properties of PP melt by incorporating an extra shear vibration field. Both the tensile strength and elongation at break increased under the shear vibration field. For vibration assisted extrusion samples, both the melting temperature and crystallinity increased, accompanied by remarkable grain refinement. Vibration assisted extrusion induced a significantly enhanced bimodal orientation with a high fraction of a*-oriented a-crystallites, while only a limited improvement in the flow direction orientation. A structural model, i.e. bimodal c-axis and a*-axis orientation of PP macromolecular chains, was adopted to explain the experimental results.
- Vibration assisted extrusion,
- Polypropylene,
- Mechanical properties,
- Microstructure
1. [1]
2. [2]
3. [3]
4. [4]
5. [5]
6. [6]
7. [7]
8. [8]
9. [9]
10. [10]
11. [11]
12. [12]
13. [13]
14. [14]
15. [15]
16. [16]
17. [17]
18. [18]
19. [19]
20. [20]
21. [21]
22. [22]
23. [23]
24. [24]
25. [25]
26. [26]
27. [27]
28. [28]
29. [29]
30. [30]
1. [1]
  Mengchen Liu , Yufei Zhang , Yi Xiao , Yang Wei , Meichen Bi , Huaide Jiang , Yan Yu , Shenghong Zhong . High stretchability and toughness of liquid metal reinforced conductive biocompatible hydrogels for flexible strain sensors. Chinese Journal of Structural Chemistry, 2025, 44(3): 100518-100518. doi: 10.1016/j.cjsc.2025.100518
2. [2]
  Zirui Zhu , Peng Liu , Jinhua Wang , Hongbin Zhang , Wei Luo . Effects of nano-metakaolin on the enhanced properties and microstructure development of natural hydraulic lime. Chinese Chemical Letters, 2025, 36(4): 109794-. doi: 10.1016/j.cclet.2024.109794
3. [3]
  Chengyi Xiao , Xiaoli Sun , Chen Zhang , Weiwei Li . An In-Depth Analysis of the Scientific Connotations, Testing Methods, and Applications of Free Volume in Polymer Physics. University Chemistry, 2025, 40(4): 33-45. doi: 10.12461/PKU.DXHX202403069
4. [4]
  Dongmei Yao , Junsheng Zheng , Liming Jin , Xiaomin Meng , Zize Zhan , Runlin Fan , Cong Feng , Pingwen Ming . Effect of surface oxidation on the interfacial and mechanical properties in graphite/epoxy composites composite bipolar plates. Chinese Chemical Letters, 2024, 35(11): 109382-. doi: 10.1016/j.cclet.2023.109382
5. [5]
  Tianli Hui , Tao Zheng , Xiaoluo Cheng , Tonghui Li , Rui Zhang , Xianghai Meng , Haiyan Liu , Zhichang Liu , Chunming Xu . A review of plasma treatment on nano-microstructure of electrochemical water splitting catalysts. Chinese Journal of Structural Chemistry, 2025, 44(3): 100520-100520. doi: 10.1016/j.cjsc.2025.100520
6. [6]
  Mingxin Song , Lijing Xie , Fangyuan Su , Zonglin Yi , Quangui Guo , Cheng-Meng Chen . New insights into the effect of hard carbons microstructure on the diffusion of sodium ions into closed pores. Chinese Chemical Letters, 2024, 35(6): 109266-. doi: 10.1016/j.cclet.2023.109266
7. [7]
  Pei Cao , Yilan Wang , Lejian Yu , Miao Wang , Liming Zhao , Xu Hou . Dynamic asymmetric mechanical responsive carbon nanotube fiber for ionic logic gate. Chinese Chemical Letters, 2024, 35(6): 109421-. doi: 10.1016/j.cclet.2023.109421
8. [8]
  Xinpin Pan , Yongjian Cui , Zhe Wang , Bowen Li , Hailong Wang , Jian Hao , Feng Li , Jing Li . Robust chemo-mechanical stability of additives-free SiO₂ anode realized by honeycomb nanolattice for high performance Li-ion batteries. Chinese Chemical Letters, 2024, 35(10): 109567-. doi: 10.1016/j.cclet.2024.109567
9. [9]
  Xiaoyu Chen , Jiahao Hu , Jingyi Lin , Haiyang Huang , Changqing Ye , Hongli Bao . Biisoindolylidene solvatochromic fluorophores: Synthesis and photophysical properties. Chinese Chemical Letters, 2025, 36(2): 109923-. doi: 10.1016/j.cclet.2024.109923
10. [10]
  Zhihao Gu , Jiabo Le , Hehe Wei , Zehui Sun , Mahmoud Elsayed Hafez , Wei Ma . Unveiling the intrinsic properties of single NiZnFeO_x entity for promoting electrocatalytic oxygen evolution. Chinese Chemical Letters, 2024, 35(4): 108849-. doi: 10.1016/j.cclet.2023.108849
11. [11]
  Wenzhong Zhang , Zirui Yan , Lingcheng Chen , Yi Xiao . Sn-fused perylene diimides: Synthesis, mechanism, and properties. Chinese Chemical Letters, 2024, 35(10): 109582-. doi: 10.1016/j.cclet.2024.109582
12. [12]
  Rongjian Chen , Jiahui Liu , Caixia Lin , Yuanming Li , Yanhou Geng , Yaofeng Yuan . Synthesis and properties of tetraphenylethene cationic cyclophanes based on o-carborane skeleton. Chinese Chemical Letters, 2024, 35(12): 110074-. doi: 10.1016/j.cclet.2024.110074
13. [13]
  Xinyu Liu , Jialin Yang , Zonglin He , Jiaoyan Ai , Lina Song , Baohua Liu . Linear polyurethanes with excellent comprehensive properties from poly(ethylene carbonate) diol. Chinese Chemical Letters, 2025, 36(1): 110236-. doi: 10.1016/j.cclet.2024.110236
14. [14]
  Shuyuan Pan , Zehui Yang , Fang Luo . Ni-based electrocatalysts for urea assisted water splitting. Chinese Journal of Structural Chemistry, 2024, 43(8): 100373-100373. doi: 10.1016/j.cjsc.2024.100373
15. [15]
  Shuwen SUN , Gaofeng WANG . Two cadmium coordination polymers constructed by varying Ⅴ-shaped co-ligands: Syntheses, structures, and fluorescence properties. Chinese Journal of Inorganic Chemistry, 2024, 40(3): 613-620. doi: 10.11862/CJIC.20230368
16. [16]
  Yanbing Shen , Yuan Yuan , Yaxin Wang , Xiaonan Ma , Wensheng Yang , Yulan Chen . Dihydroanthracene bridged bis-naphthopyrans: A multimodal chromophore with mechano- and photo-chromic properties. Chinese Chemical Letters, 2024, 35(5): 108949-. doi: 10.1016/j.cclet.2023.108949
17. [17]
  Zhengzheng LIU , Pengyun ZHANG , Chengri WANG , Shengli HUANG , Guoyu YANG . Synthesis, structure, and electrochemical properties of a sandwich-type {Co₆}-cluster-added germanotungstate. Chinese Journal of Inorganic Chemistry, 2024, 40(6): 1173-1179. doi: 10.11862/CJIC.20240039
18. [18]
  Xiaoxia WANG , Ya'nan GUO , Feng SU , Chun HAN , Long SUN . Synthesis, structure, and electrocatalytic oxygen reduction reaction properties of metal antimony-based chalcogenide clusters. Chinese Journal of Inorganic Chemistry, 2024, 40(6): 1201-1208. doi: 10.11862/CJIC.20230478
19. [19]
  Huirong LIU , Hao XU , Dunru ZHU , Junyong ZHANG , Chunhua GONG , Jingli XIE . Syntheses, structures, photochromic and photocatalytic properties of two viologen-polyoxometalate hybrid materials. Chinese Journal of Inorganic Chemistry, 2024, 40(7): 1368-1376. doi: 10.11862/CJIC.20240066
20. [20]
  Haohao Sun , Wenxuan Wang , Yuli Xiong , Zelang Jian , Wen Chen . Boosting the electrochromic properties by large V₂O₅ nanobelts interlayer spacing tuned via PEDOT. Chinese Chemical Letters, 2024, 35(9): 109213-. doi: 10.1016/j.cclet.2023.109213

Get Citation

PDF

XML

Metrics

PDF Downloads(0)
Abstract views(771)
HTML views(54)

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142