Electrical and electronics

Nassiet, Valérie; Hassoune‐Rhabbour, Bouchra; Tramis, Olivier; Petit, J.

doi:10.1016/b978-0-12-819954-1.00025-3

Cited by 6 publications

(1 citation statement)

References 100 publications

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“…With the miniaturization of electronic equipment, electronic packaging has become increasingly complex and precise [ 1 , 2 , 3 , 4 ]. The use of electrically conductive adhesives (ECAs), which are thermoset polymers filled with metal fillers, is rapidly expanding due to their low cost and processing temperature [ 3 , 5 ].…”

Section: Introductionmentioning

confidence: 99%

Improvement in the Thermal Conductivity of Silver Epoxy Adhesive by Treating with Water Vapor

et al. 2023

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With the miniaturization of electronic devices, electronic packaging has become increasingly precise and complex, which presents a significant challenge in terms of heat dissipation. Electrically conductive adhesives (ECAs), particularly silver epoxy adhesives, have emerged as a new type of electronic packaging material, thanks to their high conductivity and stable contact resistance. However, while there has been extensive research on silver epoxy adhesives, little attention has been paid to improving their thermal conductivity, which is a critical requirement in the ECA industry. In this paper, we propose a straightforward method for treating silver epoxy adhesive with water vapor, resulting in a remarkable improvement in thermal conductivity to 9.1 W/(m·K), three times higher than the sample cured using traditional methods (2.7 W/(m·K)). Through research and analysis, the study demonstrates that the introduction of H2O into the gaps and holes of the silver epoxy adhesive increases the path of electron conduction, thereby improving thermal conductivity. Furthermore, this method has the potential to significantly improve the performance of packaging materials and meet the needs of high-performance ECAs.

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Section: Introductionmentioning

confidence: 99%

Improvement in the Thermal Conductivity of Silver Epoxy Adhesive by Treating with Water Vapor

et al. 2023

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Chemicals Used in the Electronics Industry

Whittaker,

Fong,

Heine

2023

Patty's Toxicology

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The electronics industry comprises thousands of different devices including smartphones, tablets, laptops, televisions, and smart appliances that have become critical to daily life around the world. A single electronic product, the focus of this chapter, contains up to 1000 chemicals. This chemical complexity and sheer volume of chemicals present in newly assembled and discarded electronics add to the challenge of reducing the environmental and public health burdens of these products. Potential human health and environmental risks can occur at any life cycle stage of an electronic product, such as toxic solvent exposure during manufacturing or much later in the lifecycle such as the generation of carcinogenic dioxins from informal e‐waste incineration. Prioritizing the elimination of highly hazardous substances and focusing on increasing recycling rates above the industry's current 20% recycling benchmark are needed to protect public health and the environment. Uniform hazard classification frameworks such as the United Nations' Globally Harmonized System of Classification and Labeling of Chemicals (GHS), brand‐specific restricted substances lists (RSLs), positive chemical lists including TCO's Approved Substances List, and country‐specific regulations such as the European Commission's Restriction of Hazardous Substances (RoHS) Directive and China's VOC restrictions are all influencing chemical selection on a global scale. This chapter provides an overview of chemicals used in the electronics industry along with their hazards and toxicity concerns. It surveys regulatory and nonregulatory initiatives in place around the world that promote safer chemical selection and reutilization of chemicals and materials and describes tools and practices that contribute to reduced consumption of chemicals of concern in this industry.

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