Probing solidification kinetics of high-density polyethylene during injection molding using an in-situ measurement technique

2013 ◽  
Vol 32 (2) ◽  
pp. 202-208 ◽  
Author(s):  
Bin Yang ◽  
Ru Xia ◽  
Ji-Bin Miao ◽  
Jia-Sheng Qian ◽  
Ming-Bo Yang ◽  
...  
Keyword(s):  
Injection Molding ◽  
Measurement Technique ◽  
High Density Polyethylene ◽  
High Density ◽  
In Situ Measurement ◽  
Solidification Kinetics ◽  
Kinetics Of

Study on the solidification kinetics of high-density polyethylene during thin-walled injection molding process

2012 ◽  
Vol 32 (6-7) ◽  
pp. 355-363 ◽  
Author(s):  
Shuang-quan Deng ◽  
Bin Yang ◽  
Ji-bin Miao ◽  
Ru Xia ◽  
Jia-sheng Qian ◽  
...  
Keyword(s):  
Injection Molding ◽  
High Density Polyethylene ◽  
Polymeric Materials ◽  
High Density ◽  
Injection Molding Process ◽  
Structure Property ◽  
X Ray Diffraction ◽  
Molding Process ◽  
Solidification Kinetics ◽  
Thin Walled

Abstract In this work, the effect of the initial and secondary temperature differences on the solidification behaviors of high-density polyethylene (HDPE) during the thin-walled injection molding (TWIM) was intensively investigated. Simulated temperature profiles using the enthalpy transformation methodology were compared with an in situ temperature measurement, and reasonable agreement was achieved between calculations and measurements. Two-dimensional wide-angle X-ray diffraction characterization shows that the formation of oriented crystal structures was considerably affected by the thermal gradient within the injection-molded article. The present study can be practically significant to the optimization of the cooling parameters during the TWIM of crystalline polymers as well as to the further study on the relationship among “processing-structure-property” of polymeric materials.

In-Situ Measurement Technique of Stress and Structure Change

2015 ◽  
Vol 84 (8) ◽  
pp. 567-572
Author(s):  
Tadafumi HASHIMOTO ◽  
Masahito MOCHIZUKI
Keyword(s):  
Measurement Technique ◽  
Structure Change ◽  
In Situ Measurement

Structural evolution of flow-oriented high density polyethylene upon heating: In situ SAXS and WAXD studies

Polymer ◽  
2019 ◽  
Vol 180 ◽  
pp. 121698 ◽  
Author(s):  
Tao Liao ◽  
Xintong Zhao ◽  
Xiao Yang ◽  
Phil Coates ◽  
Ben Whiteside ◽  
...  
Keyword(s):  
High Density Polyethylene ◽  
Structural Evolution ◽  
High Density

scholarly journals In-Situ Synthesis and Property Evaluation of High-Density Polyethylene Reinforced Groundnut Shell Particulate Composite

2021 ◽  
Vol 6 (4) ◽  
pp. 305-311
Author(s):  
Abdulmumin Adebisi ◽  
Tajudeen Mojisola ◽  
Umar Shehu ◽  
Muhammed Sani Adam ◽  
Yusuf Abdulaziz
Keyword(s):  
Tensile Strength ◽  
Water Absorption ◽  
Impact Energy ◽  
High Density Polyethylene ◽  
In Situ Synthesis ◽  
High Density ◽  
Compression Moulding ◽  
Melt Mixing ◽  
Groundnut Shell

In-situ synthesis of high-density polyethylene (HDPE) reinforced groundnut shell particulate (GSP) composite with treated GSP within the range of 10-30 wt% at 10 wt% has been achieved. The adopted technique used in the production of the composite is melt mixing and compounding using two roll mills with a compression moulding machine. Properties such as hardness, tensile strength, impact energy and water absorption analysis were examined. The result revealed that addition of GSP increases the hardness value from 22.3 to 87 Hv. However, the tensile strength progressively decreased as the GSP increases in the HDPE. This trend arises due to the interaction between neighbouring reinforced particulate which appears to influence the matrix flow, thereby inducing embrittlement of the polymer matrix. It was also observed that water absorption rate steadily increased with an increase in the exposure time and the absorbed amount of water increases by increasing the wt% of the GSP. Analysing the obtained results, it was concluded that there were improvements in the hardness, tensile strength, impact energy and water absorption properties of the HDPE-GSP polymer composite when compared to unreinforced HDPE. On these premises, GSP was found as a promising reinforcement which can positively influence the HDPE properties of modern composites.

Extension of the orientation region of high density polyethylene molded by gas-assisted injection molding: control of the thermal field

2014 ◽  
Vol 63 (12) ◽  
pp. 1997-2007 ◽  
Author(s):  
Xiao-Chao Xia ◽  
Quan-Ping Zhang ◽  
Long Wang ◽  
Shan He ◽  
Jian-Ming Feng ◽  
...  
Keyword(s):  
Injection Molding ◽  
High Density Polyethylene ◽  
Thermal Field ◽  
High Density
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