Temperature dependence of mechanical properties of isotropic conductive adhesive filled with metal coated polymer spheres

Nguyen, Hoang-Vu; Kristiansen, Helge; Johannessen, Rolf; Andreassen, Erik; Larsson, Andréas; Høivik, Nils; Aasmundtveit, Knut E.

doi:10.1109/ectc.2011.5898580

Cited by 8 publications

(2 citation statements)

References 13 publications

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“…In this paper, ICA-1 cured at the selected conditions has a high degree of curing (∼96%). In addition, in previous researches for the same epoxy matrix filled with 45 vol% uncoated polymer spheres [11], [18], the die shear strengths of samples cured at 100°C for 1 and 2 h are not significantly different. Therefore, we believe the selected curing conditions (100°C for 2 h) can provide typical die shear strength values for ICA-1.…”

Section: A Curing Kinetics Of the Ica Filled With 45 Vol% Agps (Ica-1)mentioning

confidence: 59%

Die Shear Testing of a Novel Isotropic Conductive Adhesive—Epoxy Filled With Metal-Coated Polymer Spheres

Nguyen

Andreassen

Kristiansen

et al. 2013

IEEE Trans. Compon., Packag. Manufact. Technol.

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Isotropic conductive adhesives (ICAs) filled with metal-coated polymer spheres (MPS) are introduced to improve the mechanical reliability compared with conventional ICAs filled with silver (Ag) flakes. This paper deals with the die shear performance of an MPS-based ICA; an epoxy filled with 45 vol% of Ø 30 µm Ag-coated monodisperse polymer spheres. The curing kinetics of the ICA is also studied. The MPS-based ICA is compared with two ICAs filled with Ag flakes: an in-house prepared ICA (with the same epoxy matrix as the MPS-based ICA) and a commercially available ICA. Both ICAs with Ag flakes have a lower particle volume fraction than the MPS-based ICA. Loading 45 vol% of MPS into the epoxy matrix has no significant effect on the curing kinetics and the glass transition temperature (T g ) of the matrix. The MPS-based ICA has 140% higher die shear strength than the in-house prepared ICA with Ag flakes, and 23% higher die shear strength than the commercial ICA with Ag flakes. The MPS-based ICA also has higher shear strain at failure, and less scatter in shear strength between repeated tests. Hence, the MPS-based ICA has a good potential for demanding applications; it has better die shear performance and higher T g than the commercial ICA with Ag flakes.Index Terms-Isotropic conductive adhesive (ICA), metalcoated polymer spheres (MPS), shear test, stiffness.

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Section: A Curing Kinetics Of the Ica Filled With 45 Vol% Agps (Ica-1)mentioning

confidence: 59%

Die Shear Testing of a Novel Isotropic Conductive Adhesive—Epoxy Filled With Metal-Coated Polymer Spheres

Nguyen

Andreassen

Kristiansen

et al. 2013

IEEE Trans. Compon., Packag. Manufact. Technol.

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“…In addition, a higher particle concentration, that is, a lower volume fraction of the adhesive matrix, may result in an MPS‐based ICA with low mechanical strength. In previous studies, we have characterized the rheological properties and the mechanical properties of an adhesive filled with 45 vol % Ag‐coated monodisperse polymer spheres (AgPS), representing a complete MPS‐based ICA. The rheological behavior of the ICA showed a high potential for processing capabilities.…”

Section: Introductionmentioning

confidence: 99%

Electrical characterization of individual metal‐coated polymer spheres used in isotropic conductive adhesives

Nguyen

Helland

et al. 2016

J of Applied Polymer Sci

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Isotropic conductive adhesives (ICAs) filled with metal‐coated polymer spheres (MPS) have been proposed to improve the mechanical reliability compared to conventional ICAs filled with silver flakes. The electrical properties of MPS play an important role in the electrical performance of macroscopic MPS‐based ICAs. This article deals with the electrical characterization of individual MPS using a nanoindentation‐based flat punch method, in which the resistance and the deformation of single MPS were monitored simultaneously. Four groups of silver‐coated polymer spheres (AgPS) with identical polymer cores but different silver coating thicknesses were tested. The resistance of AgPS decreases gradually with increasing deformation degree of particles, and increases when the deformation of particles is reduced. In addition, the resistance of individual AgPS is dependent on the physical properties of the silver coating, such as thickness, uniformity, and porosity. The thicker the silver coating is, the lower and more stable the resistance of AgPS is. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 43764.

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Isotropic Conductive Adhesive Interconnect Technology in Electronics Packaging Applications

Morris

Lee

Liu³

2014

Adhesion in Microelectronics

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Temperature dependence of mechanical properties of isotropic conductive adhesive filled with metal coated polymer spheres

Cited by 8 publications

References 13 publications

Die Shear Testing of a Novel Isotropic Conductive Adhesive—Epoxy Filled With Metal-Coated Polymer Spheres

Die Shear Testing of a Novel Isotropic Conductive Adhesive—Epoxy Filled With Metal-Coated Polymer Spheres

Electrical characterization of individual metal‐coated polymer spheres used in isotropic conductive adhesives

Isotropic Conductive Adhesive Interconnect Technology in Electronics Packaging Applications

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