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Investigation of processing parameters and material characteristics of pultruded commingled yarns for insulator applications
The objective of this thesis is to determine the
ideal processing window and the best suited thermoplastic composite material for insulator applications based on commingled yarns.
Thermoplastic pultrusion is one of the most promising manufacturing techniques for high quality, high performance composites at a competitive cost. In this joint research project with the Swiss industry, a novel pultrusion process has been developed at CMASLab. This process currently consists of melting polymer fibres mixed with reinforcing fibres (commingled yarns) in a circular die to impregnate the material and then cool the composite rod from outside until solidification. The investigation of the materials potential for high voltage insulators will be the goal of this thesis.
The polymers chosen for this investigation are the following:
-polypropylene (PP)
-polyamide 12 (PA12)
-polycarbonate (PC)
-Polyethylenterephthalat (PET)
-Polyetherimide (PEI)
Thermoplastic pultrusion is one of the most promising manufacturing techniques for high quality, high performance composites at a competitive cost. In this joint research project with the Swiss industry, a novel pultrusion process has been developed at CMASLab. This process currently consists of melting polymer fibres mixed with reinforcing fibres (commingled yarns) in a circular die to impregnate the material and then cool the composite rod from outside until solidification. The investigation of the materials potential for high voltage insulators will be the goal of this thesis. The polymers chosen for this investigation are the following:
The objective of this thesis is to determine the best suited thermoplastic composite materials as well as their processing parameters based on commingled yarns for insulator applications. To compare the properties of the different polymer matrices, several tests are necessary. The material properties will be studied using microscopy of polished samples to determine the void content and fiber volume fraction of the material. The mechanical characteristics, especially the Interlaminar shear strength will be determined using a shear test. All tests related to the insulator specific properties will be carried out by our industrial research partner.
Tasks:
- Manufacturing of pultruded samples using the pultrusion machine
- Determination of optimum pultrusion processing parameters
- Mechanical and chemical characterization of the material
The content as well as starting dates can be discussed to suit a Masters, Semester or Bachelor thesis as well as the personal interests of the stude
The objective of this thesis is to determine the best suited thermoplastic composite materials as well as their processing parameters based on commingled yarns for insulator applications. To compare the properties of the different polymer matrices, several tests are necessary. The material properties will be studied using microscopy of polished samples to determine the void content and fiber volume fraction of the material. The mechanical characteristics, especially the Interlaminar shear strength will be determined using a shear test. All tests related to the insulator specific properties will be carried out by our industrial research partner.
Tasks:
- Manufacturing of pultruded samples using the pultrusion machine
- Determination of optimum pultrusion processing parameters
- Mechanical and chemical characterization of the material
The content as well as starting dates can be discussed to suit a Masters, Semester or Bachelor thesis as well as the personal interests of the stude
Maximilian Volk
LEE O 225
mvolk@ethz.ch
image source: https://www.quora.com/How-the-electrical-breakdown-occur-in-an-insulator