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Thermosetting Acrylic Structural Adhesives

SpecialChem / Edward M. Petrie & Edward Petrie – Mar 20, 2013

This article will attempt to characterize thermosetting acrylic adhesives as an important structural adhesive class. It will define their formulation parameters, their performance and processing characteristics, and their expanding opportunities in the market place. Thermosetting acrylic adhesives are structural adhesives that often compete with epoxy and urethane adhesives but have very unique characteristics of their own. Although they have been commercially available since the late 1960s and relegated to rather niche markets, thermosetting acrylic adhesives may have been recently finding favor in a number of market sectors due to a unique combination of performance and cure properties. With high tensile strength, greater flexibility than epoxy adhesives, and good bond strength to polymeric substrates, the key thermosetting acrylic adhesive end-users are those involved in composite bonding. They have been readily accepted in the transportation industry (autos, trucks, buses, marine craft) and are making impact in the wind turbine blade, sports equipment, and consumer products markets.

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