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August 15, 2016 - Aerospace

Adhesives and Composites in Aerospace

Prevalent in the aerospace market in particular, composites offer excellent properties such as:

  • Weight reduction
  • Strength
  • Corrosion resistance

These composites, such as carbon fiber and fiberglass, help reduce weight without compromising durability. Let’s take a look at how adhesives are used in composites for aerospace.

In the aerospace market, adhesives are used in the manufacturing of the composite material itself.

For example, skin to core composites are often used in aircraft interiors. These composites are comprised of a core material, typically honeycomb or foam core construction, which is sandwiched between two outer skins. These skins come in several forms from prepreg to decorative skins.

Skin to core composites offer the following benefits:

  • Low weight
  • High stiffness
  • Durability

Adhesives for Aircraft Interior Skin to Core Composites

Adhesives serve as a tie layer, bonding these substrates together to form the composite. Using adhesives to build the composite structure provides the following advantages:

  • Ability to add increased, uniform strength throughout the material without adding weight
  • Additional Functionality can be added to the composites such as improved flame retardancy

Bostik manufactures adhesives for skin to core composites. One product in particular includes:

  • SH4275FR-A: This Sharnet web adhesive product is a flame retardant hot melt available in a nonwoven form. SH4275FR-A is based upon a high-performance, polyester polymer that bonds to a variety of textiles, urethane foams and plasticized vinyl. It also has moderate heat activation temperature and flexible adhesive bonding.

Bostik also manufactures PSA film and web films for positioning for positioning of composite layups.

For more information about Bostik’s adhesives for composites, call 800-7-BOSTIK.

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