Effect of Temperature on the Joints Strength of an Automotive Polyurethane Adhesive

Na, Jingxin; Liu, Yu; Wang, Yuanwu; Pan, Le; Yao, Yan

doi:10.1080/00218464.2014.996634

Cited by 15 publications

(3 citation statements)

References 15 publications

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“…However, at 23 °C, the displacement at failure is almost double compared to the results at 60 °C which means at higher temperatures, the adhesive experiences a degradation in its properties. Jingxin Na et al [ 21 ] also found that the polyurethane adhesive in their study maintained ductility and increased resistance at low temperatures, which led to a higher joint strength, this was due to the fact that the adhesive had a relatively low T g . In the same study, it was found that the properties decreased with increasing temperature, such as the deformation to failure as found in the current study ( Figure 5 ).…”

Section: Resultsmentioning

confidence: 86%

From High Strain Rates to Elevated Temperatures: Investigating Mixed-Mode Fracture Behaviour in a Polyurethane Adhesive

Ribas,

Akhavan-Safar,

Pigray

et al. 2023

Polymers

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The investigation of the behaviour of adhesive joints under high strain rates is an active area of research, primarily due to the widespread use of adhesives in various industries, including automotive manufacturing. Understanding how adhesives perform when subjected to high strain rates is crucial for designing vehicle structures. Additionally, it is particularly important to comprehend the behaviour of adhesive joints when exposed to elevated temperatures. Therefore, this study aims to analyse the impact of strain rate and temperature on the mixed-mode fracture characteristics of a polyurethane adhesive. To achieve this, mixed-mode bending tests were conducted on test specimens. These specimens were subjected to three different strain rates (0.2 mm/min, 200 mm/min, and 6000 mm/min) and tested at temperatures ranging from −30 °C to 60 °C. The crack size was measured using a compliance-based method during the tests. For temperatures above Tg, the maximum load supported by the specimen increased with an increasing loading rate. GI increased by a factor of 35 for an intermediate strain rate and 38 for a high strain rate from low temperature (−30 °C) to room temperature (23 °C). GII also increased for the same conditions by a factor of 25 and 95 times, respectively.

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Section: Resultsmentioning

confidence: 86%

From High Strain Rates to Elevated Temperatures: Investigating Mixed-Mode Fracture Behaviour in a Polyurethane Adhesive

Ribas,

Akhavan-Safar,

Pigray

et al. 2023

Polymers

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“…Since the bonded joint has the highest shear strength [Panda 2018], it must be sensitively selected with regard to the direction of the loading forces of the bonded components [Akhavan-Safar 2017]. However, a suitably designed bonding joint with adequate treatment of bonded surfaces provides a prerequisite for a solid and reliable joint [Na 2016]. Conversely, improperly designed adhesive joints, untreated or poorly treated surfaces often result in incoherence joint [Fernandes 2015].…”

Section: Basic Characteristics Of Bonded Jointsmentioning

confidence: 99%

Influence of Recycled Pa6 and PBT Plastic Material on the Bonding Strength

Dittrich¹,

Straka²,

Botko³

et al. 2019

MM SJ

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Nowadays, due to the requirement to achieve specific product properties or to reduce the weight of machine parts, conventional metal materials are replaced by plastics. Various methods are used to connect them to assemblies. The task of the joint is to provide a perfect, but particularly reliable, compact unit. One of the relatively effective methods of bonding plastic parts is their bonding. In addition to the properties of the adhesive used, the quality and reliability of the bonded plastic components also depend on the properties of the plastic materials used. The aim of the experimental research was therefore to contribute to the knowledge in the field of strength properties of bonded joints using PA6 and PBT plastic materials with different amount (wt%) of recycled polymer.KEYWORDS bonded joints, recycled plastic, polyamide 6 (PA6), polybutylene terephthalate (PBT), shear strength, testing.[STN EN 28510-1] Adhesives. Testing the peeling of the test specimen joint from a flexible and rigid adherend.[ISO 9664:1993] Adhesives. Test methods for fatigue properties of structural adhesives in tensile shear. CONTACTSIng. Gabriel Dittrich; assoc. prof. Ľuboslav Straka, PhD.; Ing. František Botko, PhD.; Ing. Ján Duplák, PhD.; Ing. Jarosalv Birčák;

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“…Adhesive bonding is a major joining technique in various industrial and civil applications [1,2]. Among the many types of (semi) structural adhesives, viscoelastic adhesives have a relatively low modulus and strength, but are characterised by a large elongation at break [3,4]. Applications include bonding of dissimilar materials and joints which require a structural, but flexible joint, for reasons of sealing, vibration damping or thermal expansion [1,5,6].…”

Section: Introductionmentioning

confidence: 99%

Strength and stiffness variability study of viscoelastic adhesive butt joints

Massenhove

Vandepitte

Debruyne

2019

The Journal of Adhesion

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Viscoelastic structural adhesives show great promise in industrial and civil applications where a highly ductile connection between dissimilar components is required, at both low and high load frequencies. Suitable chemistries for these applications are silicones, polyurethanes and MS polymers. These adhesives show the required low modulus and high elongation at joint failure, while retaining satisfactory strength for long term applications.However, the reliability of these adhesives has not been studied extensively.Partly because of the high initial variability on the mechanical performance of these joints. The aim of this research is to identify and correlate potential factors that have effect on the performance of an MS polymer joint. Both experimental and numerical studies are used to attain these results.Both studies show that bond geometry has a marked effect on its mechanical performance. The experiments show that the assumption of a solid, uniform adhesive joint is invalid. However, if the size and location of defects in the bond line can be estimated, and an appropriate finite element model can be constructed, the joint performance can be estimated.

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Effect of Temperature on the Joints Strength of an Automotive Polyurethane Adhesive

Cited by 15 publications

References 15 publications

From High Strain Rates to Elevated Temperatures: Investigating Mixed-Mode Fracture Behaviour in a Polyurethane Adhesive

From High Strain Rates to Elevated Temperatures: Investigating Mixed-Mode Fracture Behaviour in a Polyurethane Adhesive

Influence of Recycled Pa6 and PBT Plastic Material on the Bonding Strength

Strength and stiffness variability study of viscoelastic adhesive butt joints

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