Mechanisms of degradation in adhesive joint strength: Glassy polymer thermoset bond in a humid environment
Abstract
The degradation in the strength of napkin-ring (NR) joints bonded with an epoxy thermoset is evaluated in a humid environment. While adherend composition (stainless steel and aluminum) and surface preparation (polished, grit blasted, primed, coupling agent coated) do not affect virgin (time=0) joint strength, they can significantly affect the role of moisture on the strength of the joint. Adherend surface abrasion and corrosion processes are found to be key factors in determining the reliability of joint strength in humid environments. In cases where surface specific joint strength degradation processes are not active, decreases in joint strength can be accounted for by the glass transition temperature, Tg, depression of the adhesive associated with water sorption. Under these conditions, joint strength can be rejuvenated to virgin strength by drying. In addition, the decrease in joint strength associated with water sorption can be predicted by the Simplified Potential Energy Clock (SPEC) model by shifting the adhesive reference temperature, Tref, by the same amount as the Tg depression. When surface specific degradation mechanisms are active, they can reduce joint strength below that associated with adhesive Tg depression, and joint strength is not recoverable by drying. Furthermore, a critical relative humidity (or, potentially, critical watermore »
- Authors:
-
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- Publication Date:
- Research Org.:
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- Sponsoring Org.:
- USDOE National Nuclear Security Administration (NNSA)
- OSTI Identifier:
- 1236247
- Alternate Identifier(s):
- OSTI ID: 1422627
- Report Number(s):
- SAND-2014-16234J
Journal ID: ISSN 0143-7496; 533734
- Grant/Contract Number:
- AC04-94AL85000
- Resource Type:
- Accepted Manuscript
- Journal Name:
- International Journal of Adhesion and Adhesives
- Additional Journal Information:
- Journal Volume: 63; Journal Issue: C; Journal ID: ISSN 0143-7496
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; adhesion; degradation; humidity; mechanism; viscoelasticity
Citation Formats
Kropka, Jamie Michael, Adolf, Douglas Brian, Spangler, Scott Wilmer, Austin, Kevin N., and Chambers, Robert S. Mechanisms of degradation in adhesive joint strength: Glassy polymer thermoset bond in a humid environment. United States: N. p., 2015.
Web. doi:10.1016/j.ijadhadh.2015.07.014.
Kropka, Jamie Michael, Adolf, Douglas Brian, Spangler, Scott Wilmer, Austin, Kevin N., & Chambers, Robert S. Mechanisms of degradation in adhesive joint strength: Glassy polymer thermoset bond in a humid environment. United States. https://doi.org/10.1016/j.ijadhadh.2015.07.014
Kropka, Jamie Michael, Adolf, Douglas Brian, Spangler, Scott Wilmer, Austin, Kevin N., and Chambers, Robert S. Thu .
"Mechanisms of degradation in adhesive joint strength: Glassy polymer thermoset bond in a humid environment". United States. https://doi.org/10.1016/j.ijadhadh.2015.07.014. https://www.osti.gov/servlets/purl/1236247.
@article{osti_1236247,
title = {Mechanisms of degradation in adhesive joint strength: Glassy polymer thermoset bond in a humid environment},
author = {Kropka, Jamie Michael and Adolf, Douglas Brian and Spangler, Scott Wilmer and Austin, Kevin N. and Chambers, Robert S.},
abstractNote = {The degradation in the strength of napkin-ring (NR) joints bonded with an epoxy thermoset is evaluated in a humid environment. While adherend composition (stainless steel and aluminum) and surface preparation (polished, grit blasted, primed, coupling agent coated) do not affect virgin (time=0) joint strength, they can significantly affect the role of moisture on the strength of the joint. Adherend surface abrasion and corrosion processes are found to be key factors in determining the reliability of joint strength in humid environments. In cases where surface specific joint strength degradation processes are not active, decreases in joint strength can be accounted for by the glass transition temperature, Tg, depression of the adhesive associated with water sorption. Under these conditions, joint strength can be rejuvenated to virgin strength by drying. In addition, the decrease in joint strength associated with water sorption can be predicted by the Simplified Potential Energy Clock (SPEC) model by shifting the adhesive reference temperature, Tref, by the same amount as the Tg depression. When surface specific degradation mechanisms are active, they can reduce joint strength below that associated with adhesive Tg depression, and joint strength is not recoverable by drying. Furthermore, a critical relative humidity (or, potentially, critical water sorption concentration), below which the surface specific degradation does not occur, appears to exist for the polished stainless steel joints.},
doi = {10.1016/j.ijadhadh.2015.07.014},
journal = {International Journal of Adhesion and Adhesives},
number = C,
volume = 63,
place = {United States},
year = {Thu Aug 06 00:00:00 EDT 2015},
month = {Thu Aug 06 00:00:00 EDT 2015}
}
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Works referenced in this record:
Butt joint strength: effect of residual stress and stress relaxation
journal, January 1996
- Reedy, E. D.; Guess, T. R.
- Journal of Adhesion Science and Technology, Vol. 10, Issue 1
Predicting the Initiation of Thermoset De-Bonding
journal, November 2010
- Adolf, Douglas B.; Chambers, Robert S.; Hance, Brad
- The Journal of Adhesion, Vol. 86, Issue 11
A thermodynamically consistent, nonlinear viscoelastic approach for modeling glassy polymers
journal, June 2004
- Caruthers, James M.; Adolf, Douglas B.; Chambers, Robert S.
- Polymer, Vol. 45, Issue 13
The Adhesion Between Polymers
journal, August 1991
- Brown, H. R.
- Annual Review of Materials Science, Vol. 21, Issue 1, p. 463-489
Critical Tractions for Initiating Adhesion Failure at Interfaces in Encapsulated Components
journal, January 2006
- Adolf, Douglas B.; Chambers, Robert S.; Stavig, Mark E.
- The Journal of Adhesion, Vol. 82, Issue 1
Butt joint tensile strength: interface corner stress intensity factor prediction
journal, January 1995
- Reedy, E. D.; Guess, T. R.
- Journal of Adhesion Science and Technology, Vol. 9, Issue 2
A simplified potential energy clock model for glassy polymers
journal, August 2009
- Adolf, Douglas B.; Chambers, Robert S.; Neidigk, Matthew A.
- Polymer, Vol. 50, Issue 17
The effect of humidity on the durability of aluminium-epoxide joints
journal, October 1990
- Brewis, D. M.; Comyn, J.; Raval, A. K.
- International Journal of Adhesion and Adhesives, Vol. 10, Issue 4
The science of adhesion: Part 1 Surface and interfacial aspects
journal, September 1980
- Kinloch, A. J.
- Journal of Materials Science, Vol. 15, Issue 9
Adhesion and durability of metal-polymer bonds
journal, August 1984
- Venables, J. D.
- Journal of Materials Science, Vol. 19, Issue 8
Interaction of epoxy resins with water: the depression of glass transition temperature
journal, May 1984
- Ellis, T. S.; Karasz, F. E.
- Polymer, Vol. 25, Issue 5
Water sorption and diffusion studies in an epoxy resin system
journal, June 1999
- Maggana, C.; Pissis, P.
- Journal of Polymer Science Part B: Polymer Physics, Vol. 37, Issue 11
The influence of thermal properties on the glass transition temperature in styrene/divinylbenzene network–diluent systems
journal, January 1983
- Ellis, T. S.; Karasz, F. E.; Brinke, G. Ten
- Journal of Applied Polymer Science, Vol. 28, Issue 1
Influence of water on the cleavage of adhesive joints
journal, April 1988
- Cognard, J.
- International Journal of Adhesion and Adhesives, Vol. 8, Issue 2
Works referencing / citing this record:
Environmental effect on the fatigue degradation of adhesive joints: A review
journal, April 2016
- Costa, M.; Viana, G.; da Silva, L. F. M.
- The Journal of Adhesion, Vol. 93, Issue 1-2