Citation: Kun Jiang, Fei-long Yu, Run Su, Jing-hui Yang, Tian-nan Zhou, Jian Gao, Hua Deng, Ke Wang, Qin Zhang, Feng Chen, Qiang Fu. HIGH SPEED INJECTION MOLDING OF HIGH DENSITY POLYETHYLENE EFFECTS OF INJECTION SPEED ON STRUCTURE AND PROPERTIES[J]. Chinese Journal of Polymer Science, ;2011, 29(4): 456-464. doi: 10.1007/s10118-011-1049-3 shu

HIGH SPEED INJECTION MOLDING OF HIGH DENSITY POLYETHYLENE EFFECTS OF INJECTION SPEED ON STRUCTURE AND PROPERTIES

Received Date: 26 May 2010
Revised Date: 23 August 2010

Thin wall samples of high density polyethylene (HDPE) were prepared via injection molding with different injection speeds ranging from 100 mm/s to 1200 mm/s. A significant decrease in the tensile strength and Youngs modulus was observed with increasing injection speed. In order to investigate the mechanism behind this decrease, the orientation, molecular weight, molecular weight distribution, melt flow rate, crystallinity and crystal morphology of HDPE were characterized using two-dimensional wide-angle X-ray diffraction (2D-WAXD), gel permeation chromatography (GPC), capillary rheometry and differential scanning calorimetry (DSC), respectively. It is demonstrated that the orientation, molecular weight, molecular weight distribution, melt flow rate and crystallinity have no obvious change with increasing injection speed. Nevertheless, the content of extended chain crystals or large folded chain crystals was found to decrease with increasing injection speed. Therefore, it is concluded that the decrease in tensile properties is mainly contributed by the reduced content of extended chain crystals or large folded chain crystals. This study provides industry with valuable information for the application of high speed injection molding.
1. [1]
  Qingyun Hu , Wei Wang , Junyuan Lu , He Zhu , Qi Liu , Yang Ren , Hong Wang , Jian Hui . High-throughput screening of high energy density LiMn_1-xFe_xPO₄ via active learning. Chinese Chemical Letters, 2025, 36(2): 110344-. doi: 10.1016/j.cclet.2024.110344
2. [2]
  Yunfei Shen , Long Chen . Gradient imprinted Zn metal anodes assist dendrites-free at high current density/capacity. Chinese Journal of Structural Chemistry, 2024, 43(10): 100321-100321. doi: 10.1016/j.cjsc.2024.100321
3. [3]
  Zhilong Xie , Guohui Zhang , Ya Meng , Yefei Tong , Jian Deng , Honghui Li , Qingqing Ma , Shisong Han , Wenjun Ni . A natural nano-platform: Advances in drug delivery system with recombinant high-density lipoprotein. Chinese Chemical Letters, 2024, 35(11): 109584-. doi: 10.1016/j.cclet.2024.109584
4. [4]
  Hai-Ling Wang , Zhong-Hong Zhu , Hua-Hong Zou . Structure and assembly mechanism of high-nuclear lanthanide-oxo clusters. Chinese Journal of Structural Chemistry, 2024, 43(9): 100372-100372. doi: 10.1016/j.cjsc.2024.100372
5. [5]
  Renshu Huang , Jinli Chen , Xingfa Chen , Tianqi Yu , Huyi Yu , Kaien Li , Bin Li , Shibin Yin . Synergized oxygen vacancies with Mn2O3@CeO2 heterojunction as high current density catalysts for Li–O2 batteries. Chinese Journal of Structural Chemistry, 2023, 42(11): 100171-100171. doi: 10.1016/j.cjsc.2023.100171
6. [6]
  Ziyi Liu , Feifei Guo , Tingting Cao , Youxuan Sun , Xutang Tao , Zeliang Gao . High thermal conductivity in Ga2TeO6 crystals: Synergistic effects of rigid polyhedral frameworks and stereochemically inert cations. Chinese Journal of Structural Chemistry, 2025, 44(4): 100544-100544. doi: 10.1016/j.cjsc.2025.100544
7. [7]
  Huyi Yu , Renshu Huang , Qian Liu , Xingfa Chen , Tianqi Yu , Haiquan Wang , Xincheng Liang , Shibin Yin . Te-doped Fe3O4 flower enabling low overpotential cycling of Li-CO2 batteries at high current density. Chinese Journal of Structural Chemistry, 2024, 43(3): 100253-100253. doi: 10.1016/j.cjsc.2024.100253
8. [8]
  Bin Zhao , Heping Luo , Jiaqing Liu , Sha Chen , Han Xu , Yu Liao , Xue Feng Lu , Yan Qing , Yiqiang Wu . S-doped carbonized wood fiber decorated with sulfide heterojunction-embedded S, N-doped carbon microleaf arrays for efficient high-current-density oxygen evolution. Chinese Chemical Letters, 2025, 36(5): 109919-. doi: 10.1016/j.cclet.2024.109919
9. [9]
  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
10. [10]
  Tao LIU , Yuting TIAN , Ke GAO , Xuwei HAN , Ru'nan MIN , Wenjing ZHAO , Xueyi SUN , Caixia YIN . A photothermal agent with high photothermal conversion efficiency and high stability for tumor therapy. Chinese Journal of Inorganic Chemistry, 2024, 40(8): 1622-1632. doi: 10.11862/CJIC.20240107
11. [11]
  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
12. [12]
  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
13. [13]
  Xiaxia LIU , Xiaofang MA , Luxia GUO , Xianda HAN , Sisi FENG . Structure and magnetic properties of Mn(Ⅱ) coordination polymers regulated by N-auxiliary ligands. Chinese Journal of Inorganic Chemistry, 2025, 41(3): 587-596. doi: 10.11862/CJIC.20240269
14. [14]
  Lulu DONG , Jie LIU , Hua YANG , Yupei FU , Hongli LIU , Xiaoli CHEN , Huali CUI , Lin LIU , Jijiang WANG . Synthesis, crystal structure, and fluorescence properties of Cd-based complex with pcu topology. Chinese Journal of Inorganic Chemistry, 2025, 41(4): 809-820. doi: 10.11862/CJIC.20240171
15. [15]
  Wen LUO , Lin JIN , Palanisamy Kannan , Jinle HOU , Peng HUO , Jinzhong YAO , Peng WANG . Preparation of high-performance supercapacitor based on bimetallic high nuclearity titanium-oxo-cluster based electrodes. Chinese Journal of Inorganic Chemistry, 2024, 40(4): 782-790. doi: 10.11862/CJIC.20230418
16. [16]
  Feng Wu , Xuemin Kong , Yixuan Liu , Shuli Wang , Zhong Chen , Xu Hou . Microfluidic-based isolation of circulating tumor cells with high-efficiency and high-purity. Chinese Chemical Letters, 2024, 35(8): 109754-. doi: 10.1016/j.cclet.2024.109754
17. [17]
  Zhe Wang , Li-Peng Hou , Qian-Kui Zhang , Nan Yao , Aibing Chen , Jia-Qi Huang , Xue-Qiang Zhang . High-performance localized high-concentration electrolytes by diluent design for long-cycling lithium metal batteries. Chinese Chemical Letters, 2024, 35(4): 108570-. doi: 10.1016/j.cclet.2023.108570
18. [18]
  Shangda Qu , Yiming Yuan , Xu Ye , Wentao Xu . High sensitivity artificial synapses using printed high-transmittance ITO fibers for neuromorphic computing. Chinese Chemical Letters, 2024, 35(12): 110030-. doi: 10.1016/j.cclet.2024.110030
19. [19]
  Kaimin WANG , Xiong GU , Na DENG , Hongmei YU , Yanqin YE , Yulu MA . Synthesis, structure, fluorescence properties, and Hirshfeld surface analysis of three Zn(Ⅱ)/Cu(Ⅱ) complexes based on 5-(dimethylamino) isophthalic acid. Chinese Journal of Inorganic Chemistry, 2024, 40(7): 1397-1408. doi: 10.11862/CJIC.20240009
20. [20]
  Qijun Tang , Wenguang Tu , Yong Zhou , Zhigang Zou . High efficiency and selectivity catalyst for photocatalytic oxidative coupling of methane. Chinese Journal of Structural Chemistry, 2023, 42(12): 100170-100170. doi: 10.1016/j.cjsc.2023.100170

Get Citation

PDF

XML

Metrics

PDF Downloads(0)
Abstract views(770)
HTML views(12)

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

Address：Zhongguancun North First Street 2,100190 Beijing, PR China Tel: +86-010-82449177-888

DownLoad: Full-Size Img PowerPoint

Return