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Toughening mechanism of carbon fibre-reinforced polymer laminates containing inkjet-printed poly(methyl methacrylate) microphases.

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Title: Toughening mechanism of carbon fibre-reinforced polymer laminates containing inkjet-printed poly(methyl methacrylate) microphases.
Authors: Yi Zhang1 yi.zhang@sheffield.ac.uk, Stringer, Jonathan2, Hodzic, Alma3, Smith, Patrick J.1
Source: Journal of Composite Materials. May2018, Vol. 52 Issue 11, p1567-1576. 10p.
Subjects: Ink-jet printers, Thermoplastics, Composite materials, Carbon fiber-reinforced plastics, Laminated materials
Abstract: It has previously been demonstrated that inkjet-printed thermoplastic microphases are capable of producing a significant increase in mode I interlaminar fracture toughness (GIc) in carbon fibre-reinforced polymer with no significant reduction in other mechanical properties or increase in parasitic weight. In this work, the evolution of the microphase structure during processing and how this is influenced by the chosen printing parameters were investigated. Samples were prepared that enabled monitoring of the microphases during all steps of fabrication, with the thermoplastic polymer found to form a discrete spherical shape due to surface energy minimisation. Based upon the morphology and properties of the thermoplastic microphases, it was hypothesised that the increased toughness was due to a combination of crack deflection and plastic deformation of the microphases. Samples were produced for the double cantilever beam fracture toughness testing using the same printing conditions, and both GIc values and scanning electron microscopy of the fracture surface supported the proposed hypothesis. The feasibility of selective toughening is also demonstrated, which presents potential to tailor the mechanical properties of the carbon fibre-reinforced polymer spatially. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Composite Materials is the property of Sage Publications, Ltd. 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
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  Data: Toughening mechanism of carbon fibre-reinforced polymer laminates containing inkjet-printed poly(methyl methacrylate) microphases.
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  Data: <searchLink fieldCode="AR" term="%22Yi+Zhang%22">Yi Zhang</searchLink><relatesTo>1</relatesTo><i> yi.zhang@sheffield.ac.uk</i><br /><searchLink fieldCode="AR" term="%22Stringer%2C+Jonathan%22">Stringer, Jonathan</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Hodzic%2C+Alma%22">Hodzic, Alma</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Smith%2C+Patrick+J%2E%22">Smith, Patrick J.</searchLink><relatesTo>1</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Composite+Materials%22">Journal of Composite Materials</searchLink>. May2018, Vol. 52 Issue 11, p1567-1576. 10p.
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  Data: <searchLink fieldCode="DE" term="%22Ink-jet+printers%22">Ink-jet printers</searchLink><br /><searchLink fieldCode="DE" term="%22Thermoplastics%22">Thermoplastics</searchLink><br /><searchLink fieldCode="DE" term="%22Composite+materials%22">Composite materials</searchLink><br /><searchLink fieldCode="DE" term="%22Carbon+fiber-reinforced+plastics%22">Carbon fiber-reinforced plastics</searchLink><br /><searchLink fieldCode="DE" term="%22Laminated+materials%22">Laminated materials</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: It has previously been demonstrated that inkjet-printed thermoplastic microphases are capable of producing a significant increase in mode I interlaminar fracture toughness (GIc) in carbon fibre-reinforced polymer with no significant reduction in other mechanical properties or increase in parasitic weight. In this work, the evolution of the microphase structure during processing and how this is influenced by the chosen printing parameters were investigated. Samples were prepared that enabled monitoring of the microphases during all steps of fabrication, with the thermoplastic polymer found to form a discrete spherical shape due to surface energy minimisation. Based upon the morphology and properties of the thermoplastic microphases, it was hypothesised that the increased toughness was due to a combination of crack deflection and plastic deformation of the microphases. Samples were produced for the double cantilever beam fracture toughness testing using the same printing conditions, and both GIc values and scanning electron microscopy of the fracture surface supported the proposed hypothesis. The feasibility of selective toughening is also demonstrated, which presents potential to tailor the mechanical properties of the carbon fibre-reinforced polymer spatially. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Composite Materials is the property of Sage Publications, Ltd. 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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        Value: 10.1177/0021998317727133
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        Text: English
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        Type: general
      – SubjectFull: Thermoplastics
        Type: general
      – SubjectFull: Composite materials
        Type: general
      – SubjectFull: Carbon fiber-reinforced plastics
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      – TitleFull: Toughening mechanism of carbon fibre-reinforced polymer laminates containing inkjet-printed poly(methyl methacrylate) microphases.
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              Text: May2018
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              Y: 2018
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