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Characterizing the mechanical properties of skin-core structure in polymer molding process by nanoindentation

Persson, Johan LU ; Zhou, Jinming LU and Ståhl, Jan-Eric LU (2014) Swedish Production Symposium, 2014
Abstract
Quality of the polymer product produced by injection molding process are strongly affected by the mechanical properties of the skin-core structure formed during injection molding operation. It is desirable to know the mechanisms of the skin-core structure and the influence from process parameters and material properties to the skin-core formation in the injection molding. This paper focuses on characterisation of the hardness, modulues, elastic and viscoelastic properties in the skin-core structure of the HDPE polymers by using nanoindentation approach in order to understand the formation of mechanism of skin-core structure, and to facilitate design and dimensioning the polymer part, optimize molding process. The distribution of hardness... (More)
Quality of the polymer product produced by injection molding process are strongly affected by the mechanical properties of the skin-core structure formed during injection molding operation. It is desirable to know the mechanisms of the skin-core structure and the influence from process parameters and material properties to the skin-core formation in the injection molding. This paper focuses on characterisation of the hardness, modulues, elastic and viscoelastic properties in the skin-core structure of the HDPE polymers by using nanoindentation approach in order to understand the formation of mechanism of skin-core structure, and to facilitate design and dimensioning the polymer part, optimize molding process. The distribution of hardness and modulus were also measured with grid mapping technique by using sharp berkovich indenter. (Less)
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author
organization
publishing date
type
Contribution to conference
publication status
published
subject
keywords
nano hardness, nanoindentation, skin-core, mouldeding, polymers.
pages
9 pages
conference name
Swedish Production Symposium, 2014
language
English
LU publication?
yes
id
28fb0292-621d-4d84-8c6b-951b354f1535 (old id 4675775)
date added to LUP
2014-09-24 16:07:27
date last changed
2016-07-15 08:23:08
@misc{28fb0292-621d-4d84-8c6b-951b354f1535,
  abstract     = {Quality of the polymer product produced by injection molding process are strongly affected by the mechanical properties of the skin-core structure formed during injection molding operation. It is desirable to know the mechanisms of the skin-core structure and the influence from process parameters and material properties to the skin-core formation in the injection molding. This paper focuses on characterisation of the hardness, modulues, elastic and viscoelastic properties in the skin-core structure of the HDPE polymers by using nanoindentation approach in order to understand the formation of mechanism of skin-core structure, and to facilitate design and dimensioning the polymer part, optimize molding process. The distribution of hardness and modulus were also measured with grid mapping technique by using sharp berkovich indenter.},
  author       = {Persson, Johan and Zhou, Jinming and Ståhl, Jan-Eric},
  keyword      = {nano hardness,nanoindentation,skin-core,mouldeding,polymers.},
  language     = {eng},
  pages        = {9},
  title        = {Characterizing the mechanical properties of skin-core structure in polymer molding process by nanoindentation},
  year         = {2014},
}