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Twisted lamellae in water-assisted injection molded high density polyethylene
Xianhu Liu，Yamin Pan，Cheng Peng，Xiaoqiong Hao，Guoqiang Zheng(*)，Dirk W. Schubert，Chuntai Liu(*)，Changyu Shen，Twisted lamellae in water-assisted injection molded high density polyethylene，Materials Letters，2016，172：19~22
http://www.polymer.cnt//ss/liuxianhu/publicationsshow_10446.html |
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Enhanced Orientation of the Water-Assisted Injection-Molded iPP in the Presence of Nucleating Agent
Polymer Engineering and Science，2012，52（4）：725~732
http://www.polymer.cnt//ss/liuxianhu/publicationsshow_10434.html |
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Morphological comparison of isotactic polypropylene molded by water-assisted and conventional injection molding
Journal of Materials Science，2011，46（24）：7830~7838
It is well known that water-assisted injection molding (WAIM) process can be fulfilled based on the melt filling stage of conventional injection molding (CIM) process. However, due to the different physical fields involved during WAIM and CIM processes, WAIM part should exhibit unique morphological feat...
http://www.polymer.cnt//ss/liuxianhu/publicationsshow_10432.html |
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Enhancing oriented crystals in injection-molded HDPE through introduction of pre-shear
Enhancing oriented crystals in injection-molded HDPE through introduction of pre-shear
http://www.polymer.cnt//ss/zhengguoqiang/publicationsshow_8272.html |
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Crystalline Structure of Injection Molded β-Isotactic Polypropylene: Analysis of the Oriented Shear Zone
Although both shear flow and β-nucleating agent (β-NA) could separately induce β-crystal in isotactic
polypropylene (iPP), their combination, particularly in the typical industrial processes, in fact has received comparatively little
attention. In the current study, two-dimensional wide-angle X-ray diffraction and small-angle X-ray scattering (2D-WAXD/
SAXS) measurements were performed to inves...
http://www.polymer.cnt//ss/zhengguoqiang/publicationsshow_7080.html |
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Pre-shear induced anomalous distribution of β-form in injection molded iPP
On the laboratory scale, pre-shear induced orientation at high temperature can considerably
influence the subsequent crystallization, which has been intensively investigated by
various sophisticated methods. Unfortunately, during conventional polymer processing
(e.g., injection molding), the preservation of pre-shear induced orientation is a practical
challenge because oriented chains are pron...
http://www.polymer.cnt//ss/zhengguoqiang/publicationsshow_4465.html |
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Enhanced orientation of the water-assisted injection molded iPP in the presence of nucleating agent
The nucleated isotactic polypropylene (iPP) was
molded by water-assisted injection molding. The crystalline
morphology and orientation distribution were
studied. The results show that shear brought by melt
filling and pressurized water penetration can separately
induce the formation of oriented structures in
skin region (i.e., the region near mold cavity wall) and
the water channel region. ...
http://www.polymer.cnt//ss/zhengguoqiang/publicationsshow_4462.html |
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The hierarchical structure of water-assisted injection molded HDPE: SAXS study
molding
(CIM) was also characterized. The result shows that
the WAIM part exhibits a distinct skin-core-water channel
structure which is different from the skin-core structure
for the CIM part. In the skin layer of both WAIM and
CIM parts, the shish-kebab structure was formed due to
the shear stress brought by melt filling, but the lamellar
orientation parameter of CIM part is smaller than ...
http://www.polymer.cnt//ss/zhengguoqiang/publicationsshow_4461.html |
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Numerical simulation and experimental verification of the filling stage in injection molding
The linear low-density polyethylene melt is described by the modified Cross model, the dependence of melt viscosity on temperature incorporated with the Arrhenius
equation, and the Moldflow second-order model in this investigation. The mass, momentum conservation, and constitutive equations are discretized and solved by using the iterative stabilized fractional step algorithm along with the Crank...
http://www.polymer.cnt//ss/davidwang/publicationsshow_4131.html |
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Competing effect of shear and β-nucleating agent on the crystallization of injection-molded iPP
β-nucleating agent
http://www.polymer.cnt//ss/zhengguoqiang/publicationsshow_3445.html |
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