3M Scotch-Weld 2216 Epoxy Adhesive User Manual

Product Overview

The 3M Scotch-Weld 2216 Epoxy Adhesive is a flexible, two-part, gray epoxy adhesive designed for high-strength bonds with exceptional performance in shear and peel. This kit includes a 2 oz tube of Part A (Accelerator) and a 1.33 oz tube of Part B (Base).

Important Note: For industrial/occupational use only. Not for consumer sale or use.

Image: The 3M Scotch-Weld 2216 Epoxy Adhesive kit, showing both the Accelerator (Part A) and Base (Part B) tubes.

Safety Information

Always read and understand all instructions and warnings on both the tube and carton labels before use. This product is intended for professional or industrial use only.

The Base and Accelerator components are contrasting colors to aid in proper mixing and ensure thorough blending.

Setup and Preparation

1. Surface Preparation: For optimal bonding, surfaces should be thoroughly cleaned with a suitable solvent. After cleaning, lightly abrade the surfaces to roughen them, then clean again with solvent to remove any residue.
2. Mixing Ratio: The recommended mix ratio is 2 parts Accelerator (Part A) to 3 parts Base (Part B) by weight. For best results, accurately weigh out the components using a small scale.
3. Mixing: Thoroughly mix Part A and Part B until a uniform color is achieved. The contrasting colors of the components will help ensure complete mixing.
4. Work Life: Once mixed, the adhesive has a work life of approximately 120 minutes (2 hours). Plan your application accordingly.

Image: Detailed view of the product labeling, highlighting important instructions and warnings.

Operating Instructions

The 3M Scotch-Weld 2216 Epoxy Adhesive is designed to cure at room temperature, providing high-strength bonds.

1. Application: Apply the thoroughly mixed adhesive to each surface you intend to bond. For highest strength, consider adding a few grains of fine particles (like sand) to ensure an adequate thickness of adhesive, especially for critical applications.
2. Bonding: Bring the prepared surfaces together and apply pressure. Clamp the parts together or apply weight to maintain contact during the curing process.
3. Curing: Allow the adhesive to cure for approximately 24 hours at room temperature to achieve full strength. Handling strength is typically achieved in about 10 hours.

This adhesive can be used to bond a wide range of materials including rubber, metal, wood, most plastics, and masonry products. It offers good environmental resistance and is excellent for cryogenic bonding applications.

Maintenance and Storage

Store the 3M Scotch-Weld 2216 Epoxy Adhesive in its original packaging in a cool, dry place, away from direct sunlight and extreme temperatures. Ensure tubes are tightly sealed after each use to prevent premature curing or contamination.

Proper storage helps maintain the product's shelf life and performance.

Troubleshooting

• Poor Adhesion: Ensure surfaces were properly cleaned and abraded before application. Verify the correct mix ratio of Part A and Part B. Ensure thorough mixing until a uniform color is achieved.
• Slow Curing/No Cure: Check that the mix ratio was accurate and that the components were thoroughly mixed. Ensure the ambient temperature is within the recommended range for curing (room temperature).
• Excessive Bubbles: Mix the adhesive slowly and deliberately to minimize air entrapment.

If issues persist, refer to the detailed technical data sheet available from 3M or contact 3M technical support.

Specifications

Warranty and Support

Specific warranty information for the 3M Scotch-Weld 2216 Epoxy Adhesive is not provided in this manual. For detailed warranty terms, technical data sheets, or product support, please contact 3M directly or visit the official 3M Industrial website.

You can find more information and contact details on the 3M Industrial Store on Amazon.