Product Introduction
Our 3M™ Scotch-Weld™ Structural Adhesive Film AF 3109-2 encompasses a family of thermosetting modified epoxy adhesives in film form that provides long-term durability and meets specific challenges for metal and composite solid panel and honeycomb sandwich construction, where high fracture toughness and peel strength is required.
3M™ Scotch-Weld™ Structural Adhesive Film AF 3109-2 provides excellent performance with easy-to-use shop handling properties. These adhesive films are available in a variety of weights and carriers to meet a range of needs without imposing excess material costs. With high fracture toughness and peel strength, AF 3109-2 provides a reliable, long-term bond suitable for composites and metals in solid panel and honeycomb sandwich fabrication. We also offer an unsupported version, which can be used for reticulation. It is also compatible with multiple substrates and primers. In addition, AF 3109-2 exhibits excellent pre-bond humidity performance on composite substrates.
The following 3M primers are compatible with AF 3109-2:
- 3M™ Scotch-Weld™ Structural Adhesives Primer EW 5000
- 3M™ Scotch-Weld™ Structural Adhesives Primer EW 5000 AS
- 3M™ Scotch-Weld™ Structural Adhesives Primer EC 3917
- 3M™ Scotch-Weld™ Structural Adhesives Primer EC 3924 B
Our heat-curing, easy handling film is designed to meet numerous customer specs in aerospace manufacturing. AF 3109-2 supplies high fracture toughness and peel strength through a spectrum of environmental conditions and is easy to work with. Once cured it provides high bond strength from -67°F to 300°F (-55°C to 150°C) for use in multiple designs through multiple environments.
Structural adhesive films enable the designer to get more innovative with their parts and reduce the overall number of rivets required on your structure. This thermosetting modified epoxy in film form can be used for bonding a wide variety of substrates, including metal, honeycomb, and composite. Structural Adhesive Films come in a variety of weights and thicknesses, minimizing the weight while maintaining structural integrity.
The films are available in supported versions, typically used for monolithic bonding or honeycomb sandwich, and also in unsupported form for reticulation onto honeycomb. These films can be cured from temperatures as low as 180°F to as high as 350°F. Because these films are less messy and don’t require mixing, they offer efficiencies in the design process and are easier to use than typical paste adhesives.
Adhesive bonding enables a more lightweight structure because it allows you to use more lightweight composite, as opposed to the metallic materials that were used in previous designs. Structural adhesive films are employed anywhere you are trying to bond metal to composite. This offers good erosion performance while minimizing weight.
3M Scotch-Weld Structural Adhesive Film AF 3109-2 Features
- Designed for 250°F (120°C) cure or 350°F (175°C)
- Adhesive can be cured from 225°F (107°C) up to 350°F (175°C)
- Excellent shop handling characteristics
- Excellent pre-bond humidity performance on composite substrates
- Unsupported version available for reticulation
- High-fracture toughness and peel strength
- Provides high bond strength from -67°F to 300°F (-55°C to 150°C)
- Compatible with multiple substrates and primers
- Minimizes use of rivets in structures
- Less messy and easier to use compared to paste adhesives
3M Scotch-Weld Structural Adhesive Film AF 3109-2 Applications
- Bonding metal to composite substrates
- Solid panel and honeycomb sandwich construction
- Monolithic bonding applications
- Honeycomb reticulation applications
- Aerospace manufacturing and structural bonding
- Applications requiring high fracture toughness and peel strength
- Repairs requiring lightweight, high-strength adhesive solutions
About Prostech
Prostech offers specialty materials (adhesives, tapes, thermal interface materials, insulating materials, sealants, PCB protection materials, …) along with manufacturing solutions. We proudly serve a wide range of industries and are an authorized distributor for leading global manufacturers of industrial materials and equipment. Our product range is designed to deliver customized solutions that address each customer’s unique needs.
With years of experience and a successful project history, we are confident in our ability to provide comprehensive material solutions. These solutions effectively tackle the challenges manufacturers face. To explore our full product catalog, simply click here. Our dedicated team is ready to assist with:
- Provide quotation, sample, TDS/MSDS, and technical consultation
- Testing sample quality and verifying product compatibility in our laboratory
- Customizing material formulas for special applications
- Adapting product sizes, quantities, and packaging to meet specific needs
- Offering expert advice on suitable equipment and automation processes
- Delivering technical training and on-site support for optimal product use
Moreover, Prostech ensures the safe and accurate global delivery of all materials, including “dangerous goods”, in compliance with legal regulations. For personalized technical support or to receive a quotation, please contact us today.
| Property | Value |
|---|---|
| Adhesive Type | Epoxy Film Adhesive, Epoxy |
| Application | Bonding |
| Cure Rate | 1 hr |
| Factory ISO Certification | No ISO Certification information available |
| Maximum Cure Conditions (Celsius) | 177 ℃ |
| Maximum Cure Conditions (Fahrenheit) | 350 ℉ |
| Maximum Operating Temperature (Celsius) | 150 ℃ |
| Maximum Operating Temperature (Fahrenheit) | 300 ℉ |
| Minimum Cure Conditions (Celsius) | 107 ℃, 121 ℃ |
| Minimum Cure Conditions (Fahrenheit) | 224.6 ℉, 250 ℉ |
| Minimum Operating Temperature (Celsius) | -55 ℃ |
| Minimum Operating Temperature (Fahrenheit) | -67 ℉ |
| Nominal Weight (Imperial) | 0.015 lb/ft², 0.035 lb/ft², 0.045 lb/ft², 0.06 lb/ft², 0.085 lb/ft² |
| Product Color | Blue |
| Storage Environment | Freezer Storage |
| Substrate | Metal, Composite |
| Overall Length (Imperial) | 25 yd, 36 yd, 50 yd |
| Overall Length (Metric) | 22.9 m, 33 m, 45.7 m |
| Overall Width (Imperial) | 36 in, 48 in |
| Overall Width (Metric) | 0.9 m, 1.2 m |
