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  6. 3M™ Scotch-Weld™ Structural Core Splice Adhesive Film AF 3074 FST

3M™ Scotch-Weld™ Structural Core Splice Adhesive Film AF 3074 FST

  • Reliable expanision ratio of up to 230% (>3x the thickness of the uncured film).
  • Wide in-service temperature range.
  • FST tested according to FAR/JAR/CS 25.853(a) App F, part I(a)(1)(ii) and ABD0031.
  • Easy to handle, cut, and reposition during lay up process.
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Specifications
Adhesive Type
Epoxy
Cure Temperature
250/350 Degree Fahrenheit
Overall Length (Metric)
400 mm
Overall Width (Metric)
300 mm
Product Colour
Off White
Storage Environment
Freezer Storage
Total Thickness (metric)
0.76 mm, 1.27 mm
Product Details
  • Reliable expanision ratio of up to 230% (>3x the thickness of the uncured film).
  • Wide in-service temperature range.
  • FST tested according to FAR/JAR/CS 25.853(a) App F, part I(a)(1)(ii) and ABD0031.
  • Easy to handle, cut, and reposition during lay up process.
  • Cocurable with structural adhesive films and prepregs in 120°C to 180°C cure cycles.
  • Long shop life (up to 30 days storage at room temperature outside of the protective bag).
  • Suitable for storage at room temperature for 6 months from date of manufacturing, when stored in the sealed protective bag.

3M™ Scotch-Weld™ Structural Core Splice Adhesive Film AF 3074 FST is a thermally expanding epoxy adhesive film designed for honeycomb core splicing, reinforcement and edge filling processes typically used in aircraft part fabrication.

The film is easy to cut, handle and reposition during the lay up process and is cocurable with adhesive films and prepregs in 120°C to 180°C cure cycles. In addition, AF 3074 FST offers a consistent expansion ratio (up to 230%) which can be adjusted through temperature ramp up rate depending on the needs of the application. With excellent mechanical strength, FST properties, and the option to store at room temperature for 6 months (when stored in sealed original packaging); AF 3074 FST is a verstaile core splice adhesive film suitable for a wide variety of cabin interior and aero-structure honeycomb part applications.

Suggested Applications

  • Homeycomb splicing, reinforcement, and edge filling / finishing for primary and secondary aero-structure part fabrication
  • Homeycomb splicing, reinforcement, and edge filling / finishing for cabin interior part fabrication