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Study on non-isothermal hot-embossing of polymer micro-prism array with efficiency and accuracy.

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Title: Study on non-isothermal hot-embossing of polymer micro-prism array with efficiency and accuracy.
Authors: Hu, Manfeng1, Xie, Jin1 jinxie@scut.edu.cn, Li, Wenzhe1, Lu, Kuo1
Source: Journal of Materials Processing Technology. Apr2019, Vol. 266, p675-686. 12p.
Subjects: Microforms, Nanostructured materials, Surface roughness, Embossing (Metalwork), Metal finishing
Abstract: Graphical abstract Abstract The isothermal hot-embossing leads to inefficiency because of heating and cooling whole polymer workpiece for precision micro-forming. Hence, a non-isothermal hot-embossing is proposed by compressing and melting a micron-scale surface layer into heated core microgrooves without changing the solid-state workpiece. The objective is to understand how the upper layer micro-prism array is formed on large-size polymer surface with regard to core microgroove parameters and hot-embossing variables. First, the micro-prism shape and sizes were in-process modeled through a hybrid of mechanical compression and hot-melt flowing inside core microgrooves; then the micro-grinding with the trued wheel micro-tip was employed to fabricate various microgrooves on macro-size die cores; finally, the micro-forming accuracy and efficiency were experimentally investigated in hot-embossing. It is shown that the integrated micro-prism array with nanometer-scale surface roughness is rapidly generated inside accurate and smooth core microgrooves with 1–3 seconds. The micro-forming accuracy is dominated by the hot-embossing variables under the limitations of core microgroove parameters. Moreover, the hot-embossed surface roughness reaches 10–30 nm through the hot-melt layer flowing even if the core surface roughness is larger. It is confirmed that the rapid micro-forming sizes and surface roughness may be predicted by the micro-nano core topographies and the hot-embossing variables. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Materials Processing Technology is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
An: 133736401
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PubTypeId: academicJournal
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  Data: Study on non-isothermal hot-embossing of polymer micro-prism array with efficiency and accuracy.
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  Data: <searchLink fieldCode="AR" term="%22Hu%2C+Manfeng%22">Hu, Manfeng</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Xie%2C+Jin%22">Xie, Jin</searchLink><relatesTo>1</relatesTo><i> jinxie@scut.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Li%2C+Wenzhe%22">Li, Wenzhe</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Lu%2C+Kuo%22">Lu, Kuo</searchLink><relatesTo>1</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Materials+Processing+Technology%22">Journal of Materials Processing Technology</searchLink>. Apr2019, Vol. 266, p675-686. 12p.
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  Data: <searchLink fieldCode="DE" term="%22Microforms%22">Microforms</searchLink><br /><searchLink fieldCode="DE" term="%22Nanostructured+materials%22">Nanostructured materials</searchLink><br /><searchLink fieldCode="DE" term="%22Surface+roughness%22">Surface roughness</searchLink><br /><searchLink fieldCode="DE" term="%22Embossing+%28Metalwork%29%22">Embossing (Metalwork)</searchLink><br /><searchLink fieldCode="DE" term="%22Metal+finishing%22">Metal finishing</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Graphical abstract Abstract The isothermal hot-embossing leads to inefficiency because of heating and cooling whole polymer workpiece for precision micro-forming. Hence, a non-isothermal hot-embossing is proposed by compressing and melting a micron-scale surface layer into heated core microgrooves without changing the solid-state workpiece. The objective is to understand how the upper layer micro-prism array is formed on large-size polymer surface with regard to core microgroove parameters and hot-embossing variables. First, the micro-prism shape and sizes were in-process modeled through a hybrid of mechanical compression and hot-melt flowing inside core microgrooves; then the micro-grinding with the trued wheel micro-tip was employed to fabricate various microgrooves on macro-size die cores; finally, the micro-forming accuracy and efficiency were experimentally investigated in hot-embossing. It is shown that the integrated micro-prism array with nanometer-scale surface roughness is rapidly generated inside accurate and smooth core microgrooves with 1–3 seconds. The micro-forming accuracy is dominated by the hot-embossing variables under the limitations of core microgroove parameters. Moreover, the hot-embossed surface roughness reaches 10–30 nm through the hot-melt layer flowing even if the core surface roughness is larger. It is confirmed that the rapid micro-forming sizes and surface roughness may be predicted by the micro-nano core topographies and the hot-embossing variables. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Materials Processing Technology is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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    Identifiers:
      – Type: doi
        Value: 10.1016/j.jmatprotec.2018.11.041
    Languages:
      – Code: eng
        Text: English
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      Pagination:
        PageCount: 12
        StartPage: 675
    Subjects:
      – SubjectFull: Microforms
        Type: general
      – SubjectFull: Nanostructured materials
        Type: general
      – SubjectFull: Surface roughness
        Type: general
      – SubjectFull: Embossing (Metalwork)
        Type: general
      – SubjectFull: Metal finishing
        Type: general
    Titles:
      – TitleFull: Study on non-isothermal hot-embossing of polymer micro-prism array with efficiency and accuracy.
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            NameFull: Hu, Manfeng
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            NameFull: Xie, Jin
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            NameFull: Li, Wenzhe
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            NameFull: Lu, Kuo
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            – D: 01
              M: 04
              Text: Apr2019
              Type: published
              Y: 2019
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              Value: 266
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            – TitleFull: Journal of Materials Processing Technology
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