Ingenieurwissenschaften und zugeordnete Tätigkeiten
Filtern
Dokumenttyp
- Vortrag (2)
- Beitrag zu einem Tagungsband (1)
Sprache
- Englisch (3) (entfernen)
Referierte Publikation
- nein (3)
Schlagworte
Organisationseinheit der BAM
Eingeladener Vortrag
- nein (2)
The majority of all products have coated surfaces designed to fulfil different requirements. Building constructions are exposed to external influences like a wide temperature and humidity range, rain and UV radiation to name a few. The extension of machine life for metal cutting tools, like drills or milling cutters is another field of application for coated surfaces. The surfaces have to be modified in a way to maintain their specific functionality. Although adhesion testing of coatings is of great interest, it is still a challenge to obtain reliable quantitative results and to meet economic requirements.
In this talk we deal with the curing behaviour of different 2-component epoxy paint systems for corrosion protection of metal constructions. After preparation of specimens the strength was determined in specified time intervals during curing. It could be shown that epoxy paints differ significantly on curing time as well as final strength. The second experimental study deals with coating systems on glass fibre reinforced plastics which are used for wind power turbines to reduce abrasive wear and ice adhesion for aerodynamic and safety reasons.
All measurements have been carried out by CAT-TechnologyTM (Centrifugal Adhesion Testing), which uses the radially directed centrifugal force as test-load. The multi-sample test instrument analyses up to eight test specimen under identical testing conditions. By varying the rotational speed (100 rpm up to 13,000 rpm), forces from 0.1 N to 6.5 kN are applied. Upon reaching the critical rupture force, the stamp separates from the substrate and a sample related IR-signal is sent from the spinning rotor. For each test specimen breaking force is calculated and displayed in real-time. The innovative measurement principle meets the requirements of DIN EN 15870 and ISO 4624.
The paper addresses the ‘Centrifugal Adhesion Testing Technology for adhesive strength determination´ and the following points are discussed in more detail:
Bonding & Adhesive Strength Measurement principle CAT-Technology (Centrifugal Adhesion Testing), Preparation of test specimen, SEPView 7 – Software, Metal coatings on glass and on non-planar polymer substrates, Comparison of adhesive tapes.
The future commercial prospects for adhesive tapes are very good and its application range is very broad. From every-day-use in office, packaging, maintenance, and quick repair in workshops, it ranges from handicraft work, medical purposes and cosmetics up to workmanship. The study describes a new multi-sample approach in adhesive tape testing from theoretical background, preparation of test specimen for tensile as well as shear testing, detailed measurement procedures up to analysis and result interpretation. Various types of single and double-sided pressure sensitive adhesive tapes supplied by different manufacturers were investigated and compared