Effects of salt spray on the mechanical properties of aluminum-epoxy adhesive joints

2013 ◽  
Vol 27 (14) ◽  
pp. 1580-1589 ◽  
Author(s):  
Dandan Hua ◽  
Jianping Lin ◽  
Baowen Zhang
Keyword(s):  
Mechanical Properties ◽  
Salt Spray ◽  
Epoxy Adhesive ◽  
Adhesive Joints

scholarly journals Mechanical Properties and Leak-Tightness of Polymeric Pipe Adhesive Joints

2022 ◽  
Vol 3 (1) ◽  
pp. 64-77
Author(s):  
Anna Rudawska ◽  
Magd Abdel Wahab ◽  
Miroslav Müller ◽  
Dana Stančeková
Keyword(s):  
Mechanical Properties ◽  
Polyvinyl Chloride ◽  
Epoxy Adhesive ◽  
Adhesive Joints ◽  
Cyanoacrylate Adhesive ◽  
Strength Tests ◽  
Two Component ◽  
Leak Tightness

This paper presents issues related to the determination of the selected mechanical properties of adhesive joints made of polymeric pipes and the evaluation of the leak-tightness of the adhesive joints. The article attempts to demonstrate that the type of adhesive may affect the quality of adhesive joints in terms of both tightness and strength of joints. Five types of the polymer pipes differing in a polypropylene and a polyvinyl chloride, diameter and a wall thickness were used in the experiments. Two types of the adhesives were used to make the adhesive joints: Loctite 3430 A&B Hysol, a two-component epoxy adhesive, and Loctite 406, a one-component cyanoacrylate adhesive. Based on the leak-tightness tests results, it was possible to determine the quality of their adhesive joints without damaging the samples, while their tensile strength was determined through the strength tests. The tests performed allowed for the conclusion that the use of the polyvinyl chloride pipes and Loctite 406 one-component adhesive is recommended for this type of adhesive joints.

scholarly journals Mechanical Properties of Selected Epoxy Adhesive and Adhesive Joints of Steel Sheets

2021 ◽  
Vol 2 (1) ◽  
pp. 108-126
Author(s):  
Anna Rudawska
Keyword(s):  
Mechanical Properties ◽  
Epoxy Resin ◽  
Experimental Tests ◽  
Epoxy Adhesive ◽  
Adhesive Joints ◽  
Stoichiometric Ratio ◽  
Curing Agent ◽  
Steel Sheets ◽  
Epoxy Adhesives ◽  
Strength Tests

The article presents the issues of the mechanical properties of epoxy adhesives and the adhesive joints strength of steel sheets which were made using the epoxy adhesives. The aim of the paper is to study the mechanical properties of epoxy adhesive of different epoxy resin/curing agent ratios (within and above the recommended stoichiometric ratio) and their effect on mechanical properties of adhesive joints of steel sheets. In experimental tests three types of epoxy adhesives, containing a low molecular weight epoxy resin based on bisphenol A and polyamide curing agent, were used. A single-lap adhesive joint type of stainless-steel sheets was also applied. Two types of strength test were used: the compressive strength tests (DIN EN 196-1) for epoxy adhesive samples and the shear strength tests (DIN EN 1465) for adhesive joints. Both the analysis of the strength results of the samples of epoxy adhesive and adhesive joints as well as the failure analysis was carried out. On the basis of the results of strength tests it can be stated that the greatest deformation occurred for the samples of epoxy adhesive containing the modified epoxy resin (epoxy number—0.40) and the polyamide curing agent, and the smallest for the samples of epoxy adhesive containing the basic epoxy resin (epoxy number—0.49–0.52) and the polyamide curing agent. The epoxy adhesives with a smaller amount of curing agent were characterized by higher strength. This applies to all analyzed epoxy resins. The same dependences were obtained for the strength of adhesive joints of steel sheets made of the analyzed epoxy adhesive.

Improvement of mechanical properties in epoxy adhesive joints of Al alloy via carbon nanotubes from flame

2019 ◽  
Vol 6 (8) ◽  
pp. 0850d7 ◽  
Author(s):  
Pu Zhao ◽  
Xuhai Xiong ◽  
Rong Ren ◽  
Zhongbao Zhang ◽  
Xu Cui ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
Epoxy Adhesive ◽  
Adhesive Joints ◽  
Al Alloy

Technical Evaluation of Structural Adhesive Joints under Adverse Operation Conditions

2014 ◽  
Vol 797 ◽  
pp. 169-174
Author(s):  
José M. Arenas Reina ◽  
Rosa Ocaña López ◽  
Cristina Alía García ◽  
Julián J. Narbón Prieto
Keyword(s):  
Mechanical Properties ◽  
Adhesive Joint ◽  
Epoxy Adhesive ◽  
Adhesive Joints ◽  
Accelerated Ageing ◽  
Motor Oil ◽  
Aluminum Composite ◽  
Operation Conditions ◽  
Structural Adhesive ◽  
Better Than

This work analyzes the degradation of aluminum-composite adhesive joints under the action of water and motor oil. For this purpose, we have performed an accelerated ageing of the adhesive joint by immersion in water and oil. Likewise, we have evaluated the loss of mechanical properties that aging causes into adhesive joint. First, tests have been performed with bulk adhesive specimens (epoxy and polyurethane) immersed in water and motor oil during independent periods of time (1 at 128 days) in order to study the diffusion of water and motor oil into the adhesive. Second, we have evaluated the loss of mechanical properties that aging causes in the adhesive joint. Tests conclusions show that water degrades the adhesive more than motor oil. Additionally and under the action of water and motor oil, polyurethane adhesive joints retain their mechanical properties better than epoxy adhesive joints.

Mixed-mode fatigue behavior of degraded toughened epoxy adhesive joints

2011 ◽  
Vol 31 (2) ◽  
pp. 88-96 ◽  
Author(s):  
N.V. Datla ◽  
J. Ulicny ◽  
B. Carlson ◽  
M. Papini ◽  
J.K. Spelt
Keyword(s):  
Mixed Mode ◽  
Fatigue Behavior ◽  
Epoxy Adhesive ◽  
Adhesive Joints ◽  
Toughened Epoxy

Mechanical Properties of Epoxy Adhesive Under Thermal Aging and Their Chemical Degradation Behavior

2021 ◽  
Vol 21 (8) ◽  
pp. 4444-4449
Author(s):  
Bongjin Chung ◽  
Shin Sungchul ◽  
Jaeho Shim ◽  
Seongwoo Ryu
Keyword(s):  
Mechanical Properties ◽  
Thermal Aging ◽  
Photoelectron Spectroscopy ◽  
Thermal Exposure ◽  
Chain Scission ◽  
Epoxy Adhesive ◽  
Chemical Degradation ◽  
Adhesive Properties ◽  
Noticeable Reduction

Epoxy adhesive was analyzed under long term thermal aging and mechanical properties and chemical degradation were observed by X-ray photoelectron spectroscopy (XPS). Long term thermal exposure of epoxy causes a noticeable reduction in adhesive properties. We developed a predictive model of temperature and time dependent aging. The temperature dependent aging behavior of epoxy adhesive shows good agreement with conventional Arrhenius equations. Using XPS analysis, we also discovered a correlation between chemical degradation and the adhesive properties. Decay of C–C bonding ratio induced chain-scission of epoxy adhesive; increase of total numbers of C–O and C═O induced oxidation of epoxy adhesive during thermal exposure.

Sign in / Sign up

Export Citation Format

Share Document