Thermo-accelerated curing of transparent glass-glass bondings through in-situ heat generation in the adhesive joint

Research output: Contribution to book/conference proceedings/anthology/reportConference contributionContributed



Bonding glass is challenging due to the brittle properties of the material. At the same time, it is interesting for architectural applications and design, especially when carried out transparently. Thus, the adhesive joint and the substrate material appear as a uniform surface without disturbance. A variety of transparent adhesives is available for this purpose, whereby epoxy resins and polyurethanes fulfill the highest structural requirements due to their crosslinking properties. In addition, the curing of both adhesive systems can be accelerated by heat so that short cycle times, which are economically necessary for the production of bonded joints, are achieved. However, in conventional oven heating the entire prefabricated construction element, often several meters long, has to be placed in the oven. This results in long curing cycles, high-energy consumption and high costs, which makes the production extremely unprofitable from an economic and environmental point of view. More effective and targeted heating is achieved by induction or resistance processes, but these methods require activatable components in or on the adhesive joint. Electrically conductive or magnetizable fillers for adhesives are non-transparent and metallic substrates such as brackets or fixings do not exist on glass-glass bondings. Therefore, this study investigated the possibilities of heat generation on little visible metallic inserts, wires and conductive glass coatings. Different adhesives were investigated for their accelerated heat curing and the effects on the glass bond strength were analyzed. The heating properties of possible insert materials and coatings have been evaluated. With the combination of an epoxy resin adhesive and an in-joint heat generation, uniform and fast curing of a highly transparent joint suitable for structural applications could be achieved.


Original languageEnglish
Title of host publicationBook of abstracts
Place of PublicationPorto
Publication statusPublished - 14 Jul 2023


Subtitle7th International Conference on Structural Adhesive Bonding 2023
Conference number
Duration13 - 14 July 2023
Degree of recognitionInternational event
LocationFaculdade de Engenharia da Universidade do Porto

External IDs

ORCID /0000-0001-8714-5963/work/142246841
ORCID /0000-0001-8585-0482/work/142250300


Research priority areas of TU Dresden

Subject groups, research areas, subject areas according to Destatis


  • induction, resistance heating, glass-glass joint, fast curing, transparent adhesive