2158-GRAY-1G-PARTAB

December, 2009 3M™ Scotch-Weld™ Epoxy Adhesive 2158 B/A Product Description 3M™ Scotch-Weld™ Epoxy Adhesive 2158 B/A is a gray, two-part, high strength adhesive that chemically cures at room temperature. It has good adhesion to a variety of substrates including metals, many plastics, wood and concrete. Product Features • Equal mix ratio by weight or volume. • Good adhesion to damp concrete. • Recognized as meeting UL 94 HB 3M™ Scotch-Weld™ Epoxy Adhesive 2158 B/A Handling/Application Information Application Equipment These products may be applied by spatula, trowel or ow equipment. Two-part mixing/proportioning/dispensing equipment is available for intermittent or production line use. These systems are ideal because of their variable shot size and ow rate characteristics and are adaptable to most applications. For more information, contact your local 3M sales representative. Directions for Use 1. For high strength structural bonds, paint, oxide lms, oils, dust, mold release agents and all other surface contaminants must be completely removed. The amount of surface preparation depends on the required bond strength and the environmental aging resistance desired by user. For speci c surface preparations on common substrates, see the section on surface preparation. 2. Use gloves to minimize skin contact with adhesive. 3. This product consists of two parts. Mix thoroughly by weight or volume in the proportions speci ed in the Uncured Properties Section. Mix approximately 15 seconds after a uniform color is obtained. 4. For maximum bond strength apply product evenly to both surfaces to be joined. 5. Application to the substrates should be made within 120 minutes. Larger quantities and/or higher temperatures will reduce this working time. 6. Join the adhesive coated surfaces and allow to cure at 60°F (16°C) or above until rm. Heat, up to 200°F (93°C), will speed curing. 7. The following times and temperatures will result in a full cure: Cure Temperature Time 75°F (24°C) 7 days 150°F (49°C) 120 minutes 200°F (93°C) 30 minutes 8. Keep parts from moving until handling strength is reached. Contact pressure is necessary. Maximum shear strength is obtained with a 3-5 mil bond line. 9. Excess uncured adhesive can be cleaned up with ketone type solvents.* Adhesive coverage: A 0.005 in thick bond line will yield a coverage of 320 sqft/gallon. *Note: When using solvents, extinguish all ignition sources, including pilot lights, and follow manufacturer’s precautions and directions for use. 3M™ Scotch-Weld™ Epoxy Adhesive 2158 B/A Handling/Application Information (continued) Surface Preparation For high strength structural bonds, paint, oxide lms, oils, dust, mold release agents and all other surface contaminants must be completely removed. The amount of surface preparation depends on the required bond strength and the environmental aging resistance desired by user. The following cleaning methods are suggested for these common surfaces: Steel: 1. Wipe free of dust with oil-free solvent such as acetone, isopropyl or alcohol solvents.* 2. Sandblast or abrade using clean ne grit abrasives. 3. Wipe again with solvent to remove loose particles. 4. If a primer is used, it should be applied within 4 hours after surface preparation. Aluminum: 1. Vapor Degrease: Perchloroethylene condensing vapors for 5-10 minutes.* 2. Alkaline Degrease: Oakite 164 solution (9-11 oz./gallon water) at 190°F ± 10°F (88°C ± 5°C) for 10-20 minutes. Rinse immediately in large quantities of cold running water. 3. Acid Etch: Place panels in the following solution for 10 minutes at 150°F ± 5°F (66°C ± 2°C). Sodium Dichromate 4.1-4.9 oz./gallon Sulfuric Acid, 66°Be 38.5-41.5 oz./gallon 2024-T3 aluminum (dissolved) 0.2 oz./gallon minimum Tap Water as needed to balance Note: Read and follow component supplier’s environmental health and safety recommendations prior to preparation of this etch solution. 4. Rinse: Rinse panels in clear running tap water. 5. Dry: Air dry 15 minutes; force dry 10 minutes at 150°F ± 10°F (66°C ± 5°C). 6. If primer is to be used, it should be applied within 4 hours after surface preparation. Plastics/Rubbers: 1. Wipe with isopropyl alcohol.* 2. Abrade using ne grit abrasives. 3. Wipe with isopropyl alcohol.* Glass: 1. Solvent wipe surface using acetone or methyl ethyl ketone (MEK).* 2. Apply a thin coating (0.0001 in. or less) or primer such as 3M™ Scotch-Weld™ Structural Adhesive Primer EC-3901 to the glass surfaces to be bonded and allow the primer to dry before bonding. *Note: When using solvents, extinguish all ignition sources, including pilot lights, and follow manufacturer’s precautions and directions for use. Storage and Shelf Life Store product at 60-80°F (15-27°C) for maximum storage life. 3M™ Scotch-Weld™ Epoxy Adhesive 2158 B/A has a storage life of 24 months from date of manufacture in unopened containers. Rotate stock on a “ rst in- rst out” basis. Industry Speci cations UL 94 HB Trademarks 3M and Scotch-Weld are trademarks of 3M Company. References 1. 3m.com Product Page Url: http://www.3m.com/3M/en_US/company-us/all-3m-products/~/3M-Scotch-Weld-Epoxy-Adhesive-2158?N=5002385+3293241326&rt=rud 2. Safety Data Sheet Url: https://www.3m.com/3M/en_US/company-us/SDS-search/results/?gsaAction=msdsSRA&msdsLocale=en_US&co=ptn&q=2158 B/A 3M™ Scotch-Weld™ Epoxy Adhesive 2158 B/A ISO Statement This Industrial Adhesives and Tapes Division product was manufactured under a 3M quality system registered to ISO 9001 standards. Precautionary Information Refer to Product Label and Material Safety Data Sheet for health and safety information before using this product. For additional health and safety information, call 1800-364-3577 or (651) 737-6501. Technical Information The technical information, guidance, and other statements contained in this document or otherwise provided by 3M are based upon records, tests, or experience that 3M believes to be reliable, but the accuracy, completeness, and representative nature of such information is not guaranteed. Such information is intended for people with knowledge and technical skills su cient to assess and apply their own informed judgment to the information. No license under any 3M or third party intellectual property rights is granted or implied with this information. Product Selection and Use Many factors beyond 3M’s control and uniquely within user’s knowledge and control can a ect the use and performance of a 3M product in a particular application. As a result, customer is solely responsible for evaluating the product and determining whether it is appropriate and suitable for customer’s application, including conducting a workplace hazard assessment and reviewing all applicable regulations and standards (e.g., OSHA, ANSI, etc.). Failure to properly evaluate, select, and use a 3M product and appropriate safety products, or to meet all applicable safety regulations, may result in injury, sickness, death, and/or harm to property. 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Limitation of Liability Except for the limited remedy stated above, and except to the extent prohibited by law, 3M will not be liable for any loss or damage arising from or related to the 3M product, whether direct, indirect, special, incidental, or consequential (including, but not limited to, lost pro ts or business opportunity), regardless of the legal or equitable theory asserted, including, but not limited to, warranty, contract, negligence, or strict liability. Industrial Adhesives and Tapes Division 3M Center St. Paul, MN 55144-1000 800-362-3550 www.3m.com Please recycle. © 3M 2018. All Rights Reserved. The brands listed above are trademarks of 3M.