Adhesive, also known as glue, cement, mucilage, or paste, is any non-metallic substance applied to one or both surfaces of two separate items that binds them together and resists their separation.
In the aerospace context, adhesives are substances used to bond two or more materials together. Adhesives are commonly used in the aerospace industry to assemble and join a variety of components, including airframes, engines, and electronic systems. They are used in place of, or in conjunction with, mechanical fasteners such as bolts, screws, and rivets.
Examples of adhesives used in aerospace include:
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Epoxy: Epoxy is a common adhesive used in aerospace applications due to its high strength and durability. It is used to bond a wide range of materials, including metals, composites, and ceramics.
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Cyanoacrylate: Cyanoacrylate, also known as "super glue," is used in aerospace applications where a fast-curing, high-strength bond is required. It is commonly used for bonding small parts and for making emergency repairs.
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Polyurethane: Polyurethane adhesives are used in aerospace applications where flexibility and resistance to impact and extreme temperatures are required. They are commonly used to bond composites and other lightweight materials.
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Acrylic: Acrylic adhesives are used in aerospace applications where a clear bond is required, such as bonding of transparent windows and canopies.
Adhesives are used in many aerospace applications as an alternative to mechanical fastening methods, such as welding, soldering, and bolting. They offer significant benefits such as reduction in weight, lower labor costs.
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