Interfacial fracture strength and toughness of copper/epoxy-resin interfaces

Badwe, Nilesh; Mahajan, Ravi; Sieradzki, Karl

doi:10.1016/j.actamat.2015.10.009

Cited by 16 publications

(5 citation statements)

References 30 publications

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“…Adhesive joints are becoming critically important for the automotive and aerospace industries [1,2] as they enable the production of lightweight structures which seamlessly combine metallic alloys with polymer matrix composites. The adhesive joining method offers substantial advantages over traditional joining techniques such as mechanical fastening; particularly, stress concentrating holes can be avoided and a more homogeneous stress distribution can be achieved [3].…”

Section: Introductionmentioning

confidence: 99%

Experimental characterisation and numerical modelling of the influence of bondline thickness, loading rate, and deformation mode on the response of ductile adhesive interfaces

Lißner

Alabort

Cui

et al. 2019

Journal of the Mechanics and Physics of Solids

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A new method for characterising the rate-dependent failure of elasto-plastic adhesively bonded structures has been developed and used to investigate the different modes of loading of representative interfaces. Furthermore, experimental observations enabled a newly developed cohesive zone model that captures all critical aspects of the observed and quantified behaviour of the adhesive under consideration. In particular, the model is capable of reproducing the conducted experiments by incorporating both the dependence of the deformation rate and the adhesive thickness. For that, computed tomography of the adhesive interface was used to resolve three-dimensionally the adhesive volume. The volume fraction of microscopic voids in the adhesive was introduced into the model to rationalise the observed dependence of the mechanical response of the adhesive upon its thickness. Finally, the cohesive zone model was proven with mixed-mode fracture experiments which demonstrate the model's ability to simulate more complex deformation regimes.

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Section: Introductionmentioning

confidence: 99%

Experimental characterisation and numerical modelling of the influence of bondline thickness, loading rate, and deformation mode on the response of ductile adhesive interfaces

Lißner

Alabort

Cui

et al. 2019

Journal of the Mechanics and Physics of Solids

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“…Epoxy resins have evolved as one of the most important thermosetting resins because of their good creep resistance, high strength, good thermal stability, and structural stiffness [ 10 , 11 ]. However, there are some critical properties that hindered the applications of epoxy resin; for example, they are relatively brittle and have low fracture toughness, which need to be improved in the application of advanced composites.…”

Section: Introductionmentioning

confidence: 99%

Supported Ionic Liquid Silica as Curing Agent for Epoxy Composites with Improved Mechanical and Thermal Properties

Zhang

Tian

et al. 2017

Polymers

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Abstract:The present study aims to improve the mechanical properties of epoxy composite by incorporating supported ionic liquid silica (IL-silica). The IL-silica not only showed improved interfacial interaction and reinforcement, but also served as cure agent of epoxy composites. The differential scanning calorimetry analysis revealed that epoxy composites could be successfully cured with IL-silica without any routine curing agents. IL-silica/epoxy composites presented higher mechanical and thermal properties compared with epoxy composite containing un-functionalized silica (u-silica). The dynamic mechanical analysis showed that the storage modulus of composites significantly increased with the addition of IL-silica in comparison to that with added u-silica, as well as the variation of Tg parameter. The incorporation of IL-silica simultaneously enhanced the tensile strength, toughness, and thermal stability of the epoxy composites. The considerable improvements in mechanical and thermal properties are ascribed to the improved dispersion of IL-silica and the enhanced interfacial interactions between epoxy matrix and IL-silica by strong covalent bonding, which results in an effective load transfer.

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“…According to Table 1, the addition of copper can increase the bending strength and bending modulus of the fabricated parts when the copper content is less than 50 Wt.%. This is because copper has a higher strength than resin materials (Badwe et al , 2016). When the copper content is 50 Wt.%, the mechanical properties of the SLS parts fabricated nylon-12 coated copper powders with reach the maximum.…”

Section: Resultsmentioning

confidence: 99%

Preparation and selective laser sintering of nylon-12 coated copper powders

Fu¹,

Yan

Yang

et al. 2021

RPJ

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Purpose The purpose of this paper is to prepare metal/polymer composite materials prepared by additive manufacturing (AM) technology. Design/methodology/approach The effect of sintering parameters including laser power, scanning speed and slice thickness on strength and accuracy of selective laser sintering (SLS) parts were analyzed experimentally. Then, the laser sintering mechanism of nylon-12 coated copper was discussed through analyzing the interfacial reaction of nylon-12 and copper. The SLS parts were infiltrated with epoxy resin to meet the strength requirements of injection molding. Findings In this study, mechanical mixed nylon-12/copper and nylon-12 coated copper composite powders were investigated and compared as SLS materials. An effective dissolution–precipitation method was proposed to prepare nylon-12 coated copper powders with better processing and mechanical properties. The bending strength and modulus of fabricated parts after infiltration with epoxy reach 65.3 MPa and 3,200 MPa, respectively. Originality/value The composite materials can be used in the manufacture of injection molds with a conformal cooling channel for the production of common plastics in prototype quantities, showing a broad application prospect in rapid tooling.

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Interfacial fracture strength and toughness of copper/epoxy-resin interfaces

Cited by 16 publications

References 30 publications

Experimental characterisation and numerical modelling of the influence of bondline thickness, loading rate, and deformation mode on the response of ductile adhesive interfaces

Experimental characterisation and numerical modelling of the influence of bondline thickness, loading rate, and deformation mode on the response of ductile adhesive interfaces

Supported Ionic Liquid Silica as Curing Agent for Epoxy Composites with Improved Mechanical and Thermal Properties

Preparation and selective laser sintering of nylon-12 coated copper powders

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