Laser welding of carbon fibre filled polytetra fluoroethylene

被引：6

作者：

Herthoge, Matthias ^{[1
,2
]}

De Pelsmaeker, Jens ^{[3
]}

Boone, Matthieu ^{[4
,5
]}

De Baere, Ives ^{[1
]}

Van Paepegem, Wim ^{[1
]}

Van Vlierberghe, Sandra ^{[3
,6
]}

机构：

[1] Univ Ghent, Dept Mat Text & Chem Engn MaTCh, Mech Mat & Struct, Technol Pk 46, B-9052 Zwijnaarde, Belgium

[2] Parker Hannifin Mfg Belgium, Rupelweg 11, B-9830 Boom, Belgium

[3] Vrije Univ Brussel, Dept Appl Phys & Photon, Brussels Photon, Pl Laan 2, B-1050 Brussels, Belgium

[4] Univ Ghent, UGCT Dept Phys & Astron, B-9000 Ghent, Belgium

[5] SIM Program SHE, B-9000 Ghent, Belgium

[6] Univ Ghent, Ctr Macromol Chem, Dept Organ & Macromol Chem, Polymer Chem & Biomat Res Grp, Krijgslaan 281,Bldg S4, B-9000 Ghent, Belgium

来源：

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY | 2020年 / 282卷

关键词：

Laser transmission welding; Polytetrafluoroethylene (PTFE); Physico-chemical characterization; Degradation; MOLECULAR-WEIGHT; POLYMERS; PTFE;

D O I：

10.1016/j.jmatprotec.2020.116681

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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.

引用

页数：7

共 24 条

[1] Effect of carbon black on temperature field and weld profile during laser transmission welding of polymers: A FEM study
Acherjee, Bappa
Kuar, Arunanshu S.
Mitra, Souren
Misra, Dipten
[J]. OPTICS AND LASER TECHNOLOGY, 2012, 44 (03) : 514 - 521
[2] Prediction of weld strength and seam width for laser transmission welding of thermoplastic using response surface methodology
Acherjee, Bappa
Misra, Dipten
Bose, Dipankar
Venkadeshwaran, K.
[J]. OPTICS AND LASER TECHNOLOGY, 2009, 41 (08) : 956 - 967
[3] THERMAL-CONDUCTIVITY OF A POLYETHYLENE FILLED WITH DISORIENTED SHORT-CUT CARBON-FIBERS
AGARI, Y
UEDA, A
NAGAI, S
[J]. JOURNAL OF APPLIED POLYMER SCIENCE, 1991, 43 (06) : 1117 - 1124
[4] Clear to clear laser welding for joining thermoplastic polymers: A comparative study based on physicochemical characterization
De Pelsmaeker, Jens
Graulus, Geert-Jan
Van Vlierberghe, Sandra
Thienpont, Hugo
Van Hemelrijck, Danny
Dubruel, Peter
Ottevaere, Heidi
[J]. JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, 2018, 255 : 808 - 815
[5] Dupont, 1996, DUP PROP HDB
[6] Ebnesajjad S., 2015, FLUOROPOLASTICS NONM
[7] Fluoropolymer Products Group of Plastics Europe (FPG), 2012, GUID SAF HANDL FLUOR
[8] Relationship between Structure and Mechanical Properties of Melt Processable PTFE: Influence of Molecular Weight and Comonomer Content
Frick, Achim
Sich, Dorota
Heinrich, Gert
Stern, Claudia
Goessi, Matthias
Tervoort, Theo A.
[J]. MACROMOLECULAR MATERIALS AND ENGINEERING, 2013, 298 (09) : 954 - 966
[9] Fluoropolymers: Origin, Production, and Industrial and Commercial Applications
Gardiner, James
[J]. AUSTRALIAN JOURNAL OF CHEMISTRY, 2015, 68 (01) : 13 - 22
[10] Ilie M., 2005, INT C APPL LAS EL LA, P388, DOI [10.2351/1.5060837, DOI 10.2351/1.5060837]

← 1 2 3 →