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Projects / Programmes source: ARIS

Analysis and optimization of processing procedures of molding compounds for commutators

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Research activity

Code Science Field Subfield
2.04.00  Engineering sciences and technologies  Materials science and technology   

Code Science Field
T150  Technological sciences  Material technology 
Keywords
commutator, molding compound, composites, termosetting plastics, phenol resins, fillers, fiber-reinforcement, injection, transfer, compession, molding, postcuring, characterization, thermal analysis, IR spectroscopy, chemical, physical properties
Evaluation (rules)
source: COBISS
Evaluation of bibliographic research performance indicators according to ARIS methodology
Citations Citations for bibliographic records in COBIB.SI that are linked to records in citation databases
source: WoS source: Scopus source: COBISS
Researchers (5)
no. Code Name and surname Research area Role Period No. of publications
1.  21034  Andrej Brložnik  Manufacturing technologies and systems  Researcher  2002 - 2004  2 
2.  03439  PhD Peter Bukovec  Chemistry  Researcher  2002 - 2004  544 
3.  16256  PhD Romana Cerc Korošec  Chemistry  Researcher  2002 - 2004  343 
4.  21023  Peter Kernel  Materials science and technology  Researcher  2002 - 2004  0 
5.  05758  PhD Lea Županc Mežnar  Chemistry  Head  2002 - 2004  38 
Organisations (3)
no. Code Research organisation City Registration number No. of publications
1.  0103  University of Ljubljana, Faculty of Chemistry and Chemical Technology  Ljubljana  1626990  23,072 
2.  1682  KOLEKTOR MOBILITY Upravljanje naložb d.o.o. (Slovene)  Idrija  5034558  237 
3.  2162  KOLEKTOR SIKOM Komutacijski in rotajski sistemi d.o.o. (Slovene)  Idrija  1872303  5 
Abstract
Commutator is a constituent part of the electromotor enabling the commutation of current on the spinning rotor. It is constructed of copper bars and a carrier body of molding compound. Molding compounds contain phenol formaldehyde, melamine phenol formaldehyde, or epoxy resins as binders, the inorganic fillers, glass fibers or mica as reinforcing agents, pigments and other additives for better processing. Molding compounds are formed into the products in the process of compression, transfer or injection molding, and become crosslinked (rigid) in the process of postcuring. Final characteristics of commutators, such as thermal and dimensional stability at welding or high working speeds and temperatures, good electrical properties at high temperatures, resistance to mechanical and chemical damages, as well as adhesion to the copper, all depend on the composite properties, process parameters and postcuring procedure. The goal of the proposed industrial research is to trace the properties of molding compounds from their entering into process up to the final product with the purpose to improve the characteristics of commutators. We will focus on the more demanding products still in the developmental phase. Based on thermal, structural, and morphological analysis, we will create a data - base for molding compounds to gain control over the quality of compounds available on the market as well as to plan their implementation. Second part of the project will include the optimization of the production processes within molding and post-curing procedures regarding the applied molding compound and the desired final properties of commutator.
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