New applications of laser welding in the field of thermoplastic polymer composites

2007 ◽  
Author(s):  
Stéphane Abed ◽  
Wolfgang Knapp
Keyword(s):  
Laser Welding ◽  
Polymer Composites ◽  
Thermoplastic Polymer ◽  
New Applications

scholarly journals Dielectric Properties of Wood-Polymer Composites: Effects of Frequency, Fiber Nature, Proportion, and Chemical Composition

2021 ◽  
Vol 5 (6) ◽  
pp. 141
Author(s):  
Imen Elloumi ◽  
Ahmed Koubaa ◽  
Wassim Kharrat ◽  
Chedly Bradai ◽  
Ahmed Elloumi
Keyword(s):  
Dielectric Properties ◽  
Polymer Composites ◽  
Wide Frequency Range ◽  
Dielectric Constants ◽  
Cellulose Content ◽  
Wood Fibers ◽  
Low Frequencies ◽  
Wood Polymer ◽  
Wood Polymer Composites ◽  
New Applications

The characterization of the dielectric properties of wood–polymer composites (WPCs) is essential to understand their interaction with electromagnetic fields and evaluate their potential use for new applications. Thus, dielectric spectroscopy monitored the evolution of the dielectric properties of WPCs over a wide frequency range of 1 MHz to 1 GHz. WPCs were prepared using mixtures of different proportions (40%, 50%, and 60%) of wood and bark fibers from various species, high-density polyethylene, and maleated polyethylene (3%) by a two-step process, extrusion and compression molding. Results indicated that wood fibers modify the resistivity of polyethylene at low frequencies but have no effect at microwave frequencies. Increasing the fiber content increases the composites’ dielectric properties. The fibers’ cellulose content explains the variation in the dielectric properties of composites reinforced with fibers from different wood species. Indeed, composites with high cellulose content show higher dielectric constants.

scholarly journals Pyroresistivity in conductive polymer composites: a perspective on recent advances and new applications

2018 ◽  
Vol 68 (3) ◽  
pp. 299-305 ◽  
Author(s):  
Yi Liu ◽  
Han Zhang ◽  
Harshit Porwal ◽  
James JC Busfield ◽  
Ton Peijs ◽  
...  
Keyword(s):  
Polymer Composites ◽  
Conductive Polymer ◽  
Conductive Polymer Composites ◽  
Recent Advances ◽  
New Applications

Pull-out method for direct measuring the interfacial shear strength between short plant fibers and thermoplastic polymer composites (TPC)

Holzforschung ◽  
2014 ◽  
Vol 68 (1) ◽  
pp. 17-21 ◽  
Author(s):  
Hao Wang ◽  
Genlin Tian ◽  
Hankun Wang ◽  
Wanju Li ◽  
Yan Yu
Keyword(s):  
Shear Strength ◽  
Polymer Composites ◽  
Interfacial Shear Strength ◽  
Interfacial Shear ◽  
Thermoplastic Polymer ◽  
Plant Fibers ◽  
Important Indicator ◽  
Pull Out ◽  
Research Activities ◽  
The Matrix

Abstract Thermoplastic polymer composites reinforced with short plant fiber are worldwide in focus of research activities. Interfacial shear strength (IFSS) is an important indicator for evaluating the bonding quality between the fiber and the matrix polymer. However, the direct measurement of IFSS is especially difficult in the case of short fibers. In the present article, a method is proposed to this purpose, which is related to the known “fiber pulling out” methodology. In the case of single bamboo fibers, the IFSS in a polypropylene (PP) matrix was on, an average, of 5 MPa, which can be considered as weak. Scanning electron microscopy images revealed a rough inner surface in PP cavities left after fiber pulling out. This is direct evidence that a mechanical interlocking mechanism is active in the interphase between the hydrophilic fibers and the hydrophobic matrix.

A preliminary study on bladder-assisted rotomolding of thermoplastic polymer composites

2007 ◽  
Vol 26 (1) ◽  
pp. 21-32 ◽  
Author(s):  
A. Salomi ◽  
A. Greco ◽  
F. Felline ◽  
O. Manni ◽  
A. Maffezzoli
Keyword(s):  
Polymer Composites ◽  
Thermoplastic Polymer ◽  
Preliminary Study

scholarly journals Welding of thermoplastic polymer composites in the aircraft industry (Review)

2020 ◽  
Vol 2020 (4) ◽  
pp. 30-35
Author(s):  
M.V. Iurzhenko ◽  
◽  
M.V. Korab ◽  
R.V. Kolisnyk ◽  
O.P. Masiuchok ◽  
...  
Keyword(s):  
Polymer Composites ◽  
Aircraft Industry ◽  
Thermoplastic Polymer
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