Details
| Original language | English |
|---|---|
| Article number | 103386 |
| Journal | International Journal of Adhesion and Adhesives |
| Volume | 124 |
| Early online date | 23 Apr 2023 |
| Publication status | Published - May 2023 |
Abstract
Cyanoacrylate adhesives cure within seconds due to water in a normal atmosphere, which can lead to problems in processing and in large-area bonding. The aim of this work is therefore to overcome the problem by using a water-free process atmosphere. In the scope of this work, a standard argon protective atmosphere and a novel argon/silane atmosphere are compared with an air atmosphere. To validate the influence of the atmosphere the adhesive strength is investigated by tensile tests as well as the curing process via Raman spectroscopy. In order to explain differences in curing and strength the fracture surfaces of selected samples are examined by confocal microscopy. While the argon atmosphere shows slower curing and thus longer processing capability, only low tensile strengths after 72 h are achieved. The novel oxygen-free argon/silane atmosphere shows a similar delayed cure, but the tensile strengths achieved after 72 h are comparable to those in air. The addition of silane thus allows a more flexible processing without disadvantages in the final mechanical strength.
Keywords
- Adhesion, Aluminum, Curing, Cyanoacrylate, Raman spectroscopy, Tensile strength
ASJC Scopus subject areas
- Materials Science(all)
- Biomaterials
- Chemical Engineering(all)
- Materials Science(all)
- Polymers and Plastics
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In: International Journal of Adhesion and Adhesives, Vol. 124, 103386, 05.2023.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Influence of different processing atmospheres on curing and adhesive strength of cyanoacrylates
AU - Moritz, Philipp
AU - Gerland, Sandra
AU - Wegewitz, Lienhard
AU - Raatz, Annika
AU - Maus-Friedrichs, Wolfgang
N1 - Funding Information: Funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) – Project-ID 394563137 – SFB 1368 . The authors sincerely thank K. Bode for support with the Raman measurements.
PY - 2023/5
Y1 - 2023/5
N2 - Cyanoacrylate adhesives cure within seconds due to water in a normal atmosphere, which can lead to problems in processing and in large-area bonding. The aim of this work is therefore to overcome the problem by using a water-free process atmosphere. In the scope of this work, a standard argon protective atmosphere and a novel argon/silane atmosphere are compared with an air atmosphere. To validate the influence of the atmosphere the adhesive strength is investigated by tensile tests as well as the curing process via Raman spectroscopy. In order to explain differences in curing and strength the fracture surfaces of selected samples are examined by confocal microscopy. While the argon atmosphere shows slower curing and thus longer processing capability, only low tensile strengths after 72 h are achieved. The novel oxygen-free argon/silane atmosphere shows a similar delayed cure, but the tensile strengths achieved after 72 h are comparable to those in air. The addition of silane thus allows a more flexible processing without disadvantages in the final mechanical strength.
AB - Cyanoacrylate adhesives cure within seconds due to water in a normal atmosphere, which can lead to problems in processing and in large-area bonding. The aim of this work is therefore to overcome the problem by using a water-free process atmosphere. In the scope of this work, a standard argon protective atmosphere and a novel argon/silane atmosphere are compared with an air atmosphere. To validate the influence of the atmosphere the adhesive strength is investigated by tensile tests as well as the curing process via Raman spectroscopy. In order to explain differences in curing and strength the fracture surfaces of selected samples are examined by confocal microscopy. While the argon atmosphere shows slower curing and thus longer processing capability, only low tensile strengths after 72 h are achieved. The novel oxygen-free argon/silane atmosphere shows a similar delayed cure, but the tensile strengths achieved after 72 h are comparable to those in air. The addition of silane thus allows a more flexible processing without disadvantages in the final mechanical strength.
KW - Adhesion
KW - Aluminum
KW - Curing
KW - Cyanoacrylate
KW - Raman spectroscopy
KW - Tensile strength
UR - http://www.scopus.com/inward/record.url?scp=85153675067&partnerID=8YFLogxK
U2 - 10.1016/j.ijadhadh.2023.103386
DO - 10.1016/j.ijadhadh.2023.103386
M3 - Article
AN - SCOPUS:85153675067
VL - 124
JO - International Journal of Adhesion and Adhesives
JF - International Journal of Adhesion and Adhesives
SN - 0143-7496
M1 - 103386
ER -