Product Introduction
3M™ Scotch-Weld™ Bracket Bonding Adhesive EC-7202 is a two-part epoxy adhesive which combines high mechanical strength, excellent toughness and rapid cure at room temperature. This high-viscosity adhesive holds brackets or fasteners in place without additional fixture, and the adhesive cures to handling strength within 90 minutes.
Featuring high viscosity and excellent strength build-up, 3M™ Scotch-Weld™ Bracket Bonding Adhesive EC-7202 is a general purpose adhesive for interior bonding. This two-part epoxy adheres to a wide variety of materials typically used in aircraft interior structures. Its viscosity allows it to hold brackets and fasteners immediately in place, without the need for added fixtures. It also helps prevent running or dripping, eliminating mess. The adhesive cures to handling strength within 90 minutes, and achieves full cure in 72 hrs. @23 °C / 50 % relative humidity. Its overlap shear strength has been tested to increase from 0.0 MPa @30 minutes to 30.4 MPa @150 minutes.
3M™ Scotch-Weld™ Bracket Bonding Adhesive EC-7202 is available in a 50 mL cartridge for fast, easy and accurate 2-part mixing. It contains tiny 3M™ Glass Bubbles which provide consistent texture and hold bondlines to a minimum 150 micron thickness.
3M™ epoxy adhesives are part of the class of adhesives called “structural adhesives,” which also includes polyurethane and acrylic adhesives. Epoxy adhesives are typically formulated with reactive components (Base and Accelerator) that cure when mixed to form a solid plastic material. 3M provides epoxy adhesives in multiple formats to support your processing needs:
Two Part – 3M™ Scotch-Weld™ Bracket Bonding Adhesive EC-7202 is a two-part adhesive. In this format, the Base and Accelerator are stored separately which enables the adhesive to have a long shelf life even when stored at room temperature. When stored in the original, unopened container at the storage conditions suggested, this product has a shelf life of 15 months from the date of shipment from 3M. These materials are available in cartridges for use with the 3M™ EPX™ Applicator System, enabling you to simultaneously meter, mix and apply two-part adhesives. For larger scale operations, you can purchase these in bulk. Because these parts are mixed at point of use, you can reduce waste by saving non-mixed unused material for a later job.
One Part – In this format, 3M does the mixing for you and ships it frozen. You store it in a freezer, then remove and thaw it when you’re ready to use it.
Adhesive Films – In this one-part format, 3M not only does the mixing for you, but also turns it into a film that can be specifically cut to size and placed into your bond line. 3M offers a variety of films in different weights/thickness and supports. These films must be stored frozen.
In a two-part epoxy adhesive, once the two parts are mixed in their specified ratio, they begin the curing process and offer a limited working time where the adhesive can be applied and the two surfaces positioned as needed. Similarly, in a one-part adhesive there is a limited out time after which material is thawed during which it must be used. This work life or out time lasts anywhere from a few minutes to 48 hours or longer.
In general, epoxy adhesives provide high shear and peel strengths and have good environmental resistance. These adhesives are preferred for their ease of use, mechanical strength and chemical resistance. Depending on the formulation, epoxy adhesives can be flexible or rigid, transparent or opaque, quick setting or slow setting, high flow or low flow, room temperature or elevated temperature cure. Epoxy adhesives are among the strongest adhesives available, making them well-suited for jobs requiring strength and durability.
3M™ Scotch-Weld™ Bracket Bonding Adhesive EC-7202 Features
- General-purpose adhesive for interior bonding
- High-viscosity adhesive reduces mess, holds brackets in place without added fixtures
- Cures rapidly at room temperature
- Excellent shear and peel strength on a variety of substrates
- Contains 3M™ Glass Bubbles to ensure consistent bondline
- Available in 50mL cartridge for easy, accurate mixing
3M™ Scotch-Weld™ Bracket Bonding Adhesive EC-7202 Applications
- Interior bonding of brackets and fasteners in aircraft
- Bonding a variety of substrates requiring high mechanical strength
- Structural bonding where high viscosity prevents adhesive run-off
- Applications requiring rapid room temperature curing
- Jobs needing consistent bondline thickness with minimal mess
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.
