Laser welding of carbon fibre filled polytetra fluoroethylene

Matthias Herthoge; Jens De Pelsmaeker; Matthieu Boone; Ives De Baere; Wim Van Paepegem; Sandra Van Vlierberghe

doi:10.1016/j.jmatprotec.2020.116681

Laser welding of carbon fibre filled polytetra fluoroethylene

Matthias Herthoge, Jens De Pelsmaeker, Matthieu Boone, Ives De Baere, Wim Van Paepegem, Sandra Van Vlierberghe

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

Herein, a method is described to weld polytetrafluoroethylene (PTFE), a non-melt processable thermoplast, using a thulium laser. Different settings for laser power and speed were used. The resulting mean lap shear strength per setting ranged from 0.081 N/mm(2) to 0.297 N/mm(2). The optimal setting was found to be 12 W irrespective of the welding speed applied. Micro-computed tomography (mu-CT) and optical microscopy was used to show that the welded pattern consisted of tunnel defects. As PTFE is known to be non-melt processable, a physico-chemical characterization was performed to examine the formation of degradation products. Differential scanning calorimetry (DSC) showed a reduction in molecular weight of the PTFE in the weld pattern after welding. Attenuated total reflectance infrared (ATR-IR) and nuclear magnetic resonance (NMR) spectroscopy using hexafluoroisopropanol (HFIP) did not indicate the presence of any new compounds in the respective spectra.

Original language	English
Article number	116681
Pages (from-to)	1-7
Number of pages	7
Journal	Journal of Materials Processing Technology
Volume	282
DOIs	https://doi.org/10.1016/j.jmatprotec.2020.116681
Publication status	Published - Aug 2020

Bibliographical note

Funding Information:
This work was supported by VLAIO, the Flanders Innovation & Entrepreneurship Agency, in co-operation with Parker Hannifin Manufacturing Belgium under Grant HBC-2016-0581. The special research fund of the Ghent University (BOF-UGent) is acknowledged for the ﬁnancial support of the UGCT Center of Expertise (BOF.EXP.2017.0007). The authors would like to thank Hugo Thienpont from Brussels Photonics for his help and access to the laser welding equipment.

Funding Information:
This work was supported by VLAIO, the Flanders Innovation & Entrepreneurship Agency, in co-operation with Parker Hannifin Manufacturing Belgium under Grant HBC-2016-0581. The special research fund of the Ghent University (BOF-UGent) is acknowledged for the ?nancial support of the UGCT Center of Expertise (BOF.EXP.2017.0007). The authors would like to thank Hugo Thienpont from Brussels Photonics for his help and access to the laser welding equipment.

Publisher Copyright:
© 2020

Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.

Keywords

MOLECULAR-WEIGHT; POLYMERS; PTFE

Access to Document

10.1016/j.jmatprotec.2020.116681

Cite this

@article{43690ae4dcc1497c866d648da434a2fd,

title = "Laser welding of carbon fibre filled polytetra fluoroethylene",

abstract = "Herein, a method is described to weld polytetrafluoroethylene (PTFE), a non-melt processable thermoplast, using a thulium laser. Different settings for laser power and speed were used. The resulting mean lap shear strength per setting ranged from 0.081 N/mm(2) to 0.297 N/mm(2). The optimal setting was found to be 12 W irrespective of the welding speed applied. Micro-computed tomography (mu-CT) and optical microscopy was used to show that the welded pattern consisted of tunnel defects. As PTFE is known to be non-melt processable, a physico-chemical characterization was performed to examine the formation of degradation products. Differential scanning calorimetry (DSC) showed a reduction in molecular weight of the PTFE in the weld pattern after welding. Attenuated total reflectance infrared (ATR-IR) and nuclear magnetic resonance (NMR) spectroscopy using hexafluoroisopropanol (HFIP) did not indicate the presence of any new compounds in the respective spectra.",

keywords = "MOLECULAR-WEIGHT; POLYMERS; PTFE",

author = "Matthias Herthoge and {De Pelsmaeker}, Jens and Matthieu Boone and {De Baere}, Ives and {Van Paepegem}, Wim and {Van Vlierberghe}, Sandra",

note = "Funding Information: This work was supported by VLAIO, the Flanders Innovation & Entrepreneurship Agency, in co-operation with Parker Hannifin Manufacturing Belgium under Grant HBC-2016-0581. The special research fund of the Ghent University (BOF-UGent) is acknowledged for the ﬁnancial support of the UGCT Center of Expertise (BOF.EXP.2017.0007). The authors would like to thank Hugo Thienpont from Brussels Photonics for his help and access to the laser welding equipment. Funding Information: This work was supported by VLAIO, the Flanders Innovation & Entrepreneurship Agency, in co-operation with Parker Hannifin Manufacturing Belgium under Grant HBC-2016-0581. The special research fund of the Ghent University (BOF-UGent) is acknowledged for the ?nancial support of the UGCT Center of Expertise (BOF.EXP.2017.0007). The authors would like to thank Hugo Thienpont from Brussels Photonics for his help and access to the laser welding equipment. Publisher Copyright: {\textcopyright} 2020 Copyright: Copyright 2020 Elsevier B.V., All rights reserved.",

year = "2020",

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doi = "10.1016/j.jmatprotec.2020.116681",

language = "English",

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AU - Herthoge, Matthias

AU - De Pelsmaeker, Jens

AU - Boone, Matthieu

AU - De Baere, Ives

AU - Van Paepegem, Wim

AU - Van Vlierberghe, Sandra

N1 - Funding Information: This work was supported by VLAIO, the Flanders Innovation & Entrepreneurship Agency, in co-operation with Parker Hannifin Manufacturing Belgium under Grant HBC-2016-0581. The special research fund of the Ghent University (BOF-UGent) is acknowledged for the ﬁnancial support of the UGCT Center of Expertise (BOF.EXP.2017.0007). The authors would like to thank Hugo Thienpont from Brussels Photonics for his help and access to the laser welding equipment. Funding Information: This work was supported by VLAIO, the Flanders Innovation & Entrepreneurship Agency, in co-operation with Parker Hannifin Manufacturing Belgium under Grant HBC-2016-0581. The special research fund of the Ghent University (BOF-UGent) is acknowledged for the ?nancial support of the UGCT Center of Expertise (BOF.EXP.2017.0007). The authors would like to thank Hugo Thienpont from Brussels Photonics for his help and access to the laser welding equipment. Publisher Copyright: © 2020 Copyright: Copyright 2020 Elsevier B.V., All rights reserved.

PY - 2020/8

Y1 - 2020/8

N2 - Herein, a method is described to weld polytetrafluoroethylene (PTFE), a non-melt processable thermoplast, using a thulium laser. Different settings for laser power and speed were used. The resulting mean lap shear strength per setting ranged from 0.081 N/mm(2) to 0.297 N/mm(2). The optimal setting was found to be 12 W irrespective of the welding speed applied. Micro-computed tomography (mu-CT) and optical microscopy was used to show that the welded pattern consisted of tunnel defects. As PTFE is known to be non-melt processable, a physico-chemical characterization was performed to examine the formation of degradation products. Differential scanning calorimetry (DSC) showed a reduction in molecular weight of the PTFE in the weld pattern after welding. Attenuated total reflectance infrared (ATR-IR) and nuclear magnetic resonance (NMR) spectroscopy using hexafluoroisopropanol (HFIP) did not indicate the presence of any new compounds in the respective spectra.

AB - Herein, a method is described to weld polytetrafluoroethylene (PTFE), a non-melt processable thermoplast, using a thulium laser. Different settings for laser power and speed were used. The resulting mean lap shear strength per setting ranged from 0.081 N/mm(2) to 0.297 N/mm(2). The optimal setting was found to be 12 W irrespective of the welding speed applied. Micro-computed tomography (mu-CT) and optical microscopy was used to show that the welded pattern consisted of tunnel defects. As PTFE is known to be non-melt processable, a physico-chemical characterization was performed to examine the formation of degradation products. Differential scanning calorimetry (DSC) showed a reduction in molecular weight of the PTFE in the weld pattern after welding. Attenuated total reflectance infrared (ATR-IR) and nuclear magnetic resonance (NMR) spectroscopy using hexafluoroisopropanol (HFIP) did not indicate the presence of any new compounds in the respective spectra.

KW - MOLECULAR-WEIGHT; POLYMERS; PTFE

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DO - 10.1016/j.jmatprotec.2020.116681

M3 - Article

VL - 282

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EP - 7

JO - Journal of Materials Processing Technology

JF - Journal of Materials Processing Technology

SN - 0924-0136

M1 - 116681

ER -

Laser welding of carbon fibre filled polytetra fluoroethylene

Abstract

Bibliographical note

Keywords

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