Adhesion - definition

Adhesion is a physicochemical phenomenon involving the sticking together of molecules of two different bodies due to the action of intermolecular forces, such as van der Waals forces, electrostatic forces, dipole interactions, and in some cases, chemical bonds. The mechanism of adhesion is crucial in many fields of engineering and science, including processes such as gluing, coating, printing, soldering, and the functioning of protective coatings.

In the context of materials engineering, adhesion refers to the force that holds layers of materials with different structures and properties together, such as metal and paint, composite and resin, or glass and polymer. The effectiveness of adhesion depends on a range of factors, including the cleanliness and preparation of surfaces, the type and surface energy of materials, the presence of intermediate layers, and environmental conditions such as temperature, humidity, and pressure.

Adhesion differs from cohesion, which describes the internal cohesive forces within the same substance. In technological processes, an increase in adhesion can be achieved through appropriate surface preparation, such as roughening, chemical activation, plasma treatment, or the application of primers that enhance material compatibility.

In specialized applications, such as microelectronics, biomaterials, or composite technologies, the control and optimization of adhesion are essential elements in designing functional material interfaces, which are crucial for the durability, performance, and reliability of final products. Advanced theoretical models describing adhesion are being developed in modern research, taking into account the influence of surface topography at the nano- and microscopic levels and the mechanisms of elastoplastic deformation.

Transfer Multisort Elektronik (TME) is one of the world’s largest global distributors of electronic components, electrotechnical parts, workshop equipment, and industrial automation. The catalog includes over 1,500,000 products from 1,300 leading manufacturers. TME’s modern logistics centers in Łódź and Rzgów (Poland), with a combined area of over 40,000 m², ship nearly 6,000 packages daily to customers in more than 150 countries.

TME also invests in the development of knowledge and skills of young engineers and electronics enthusiasts through the TME Education project, and supports the tech community by organizing the TechMasterEvent series, promoting innovation and experience exchange.