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There are three major requirements of creating a desirable surface for adhesive bonding of plastics: the weak boundary layer of the given material must be removed or chemically modified to create a strong boundary layer; the surface energy of the adherend should be higher than the surface energy of the adhesive for good wetting; and the surface profile can be improved to provide mechanical ...
Wafer bonding is a packaging technology on wafer-level for the fabrication of microelectromechanical systems (MEMS), nanoelectromechanical systems (NEMS), microelectronics and optoelectronics, ensuring a mechanically stable and hermetically sealed encapsulation. The wafers' diameter range from 100 mm to 200 mm (4 inch to 8 inch) for MEMS/NEMS ...
Metallic Network covalent Molecular covalent Single atoms Unknown Background color shows bonding of simple substances in the periodic table. If there are several, the most stable allotrope is considered.
For bonding, the amount of thermal energy required is higher due to the need to first flow the adhesive and allow the two sides to come together into electrical contact, and then to cure the adhesive and create a lasting reliable bond. The temperatures, times, and pressure required for these processes can vary as shown in the following table.
Among TIA-607-B's list of metallic components in need of bonding are racks, enclosures, ladders, surge protectors, cable trays, routers, switches and patch panels. Following the bonding of telecom infrastructure components, the entire system must be bonded to the building's main ground, which is sometimes also referred to as a grounding ...
A bond tester is a scientific instrument used to measure the mechanical strength of bonds, evaluate bond strength distributions or determine compliance with specified bond strength requirements of the applicable acquisition document.
Image source: Getty Images. 1. Lockheed Martin. After its stock price reached an all-time high earlier this year, Lockheed Martin and its defense contractor peers have sold off considerably over ...
DVS-3310 quality requirements in adhesive technology. DVS Media, February 2012. (Directive) DIN 6701 Gluing of rail vehicles and vehicle parts. Beuth-Verlag, Berlin, 2007. (standard) Detlef Symietz, Andreas Lutz: Structural bonding in vehicle construction. Properties, applications and performance of a new joining process.
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