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LORD® 7701 adhesion enhancer/surface modifier is a solvent-based surface treatment for use on various vulcanized and thermoplastic polymeric materials. LORD® 7701 adhesion enhancer/surface modifier chemically alters the surface of the rubber, making it more receptive to bonding.

LORD® 7701 adhesion enhancer/surface modifier is used in conjunction with a broad range of LORD® adhesives, including epoxy and urethane adhesives, for bonding cured rubber. It improves adhesion to a variety of cured and thermoplastic polymeric materials, including natural rubber, synthetic polyisoprene, SBR, butyl, polybutadiene, neoprene, EPDM, nitrile, polyurethane, styrene-butadiene block copolymers, styrene isoprene rubbers and polyvinyl chloride.
Unit of Measure

Typical Properties

Appearance

 N/A Clear to Cloudy Liquid

Density

 N/A 7.3 to 7.8 lb/gal870.0 to 930.0 kg/m³

Solids Content by Weight

 N/A 2.3 to 3.5 %

Flash Point (Seta) Temperature

 N/A 25 ºF-4 ºC

Solvents

 N/A Ethyl Acetate

Note for Typical Properties

 N/A Data is typical and not to be used for specification purposes.

Specifications

Shelf Life

 N/A 6 months

Bond Performance of Epoxy Adhesive

LORD® 7701 Adhesion Enhancer/Surface Modifier with Treatment (Epoxy Adhesive to Natural)

 N/A 100% Rubber Failure (R) 40 to 50 lb/in

LORD® 7701 Adhesion Enhancer/Surface Modifier with Treatment (Epoxy Adhesive to Styrene Butadiene Rubber (SBR))

 N/A 100% Rubber Failure (R) 105 to 120 lb/in

LORD® 7701 Adhesion Enhancer/Surface Modifier with Treatment (Epoxy Adhesive to Nitrile)

 N/A 100% Rubber Failure (R) 75 to 85 lb/in

Note for Bond Performance of Epoxy Adhesive

 N/A Typical ranges reflect results of lab testing using LORD 305-1/305-2 adhesive (1:1 by weight) or LORD 320/310B adhesive (1:1 by weight).

1/10" x 6" x 1" (0.3 cm x 15 cm x 2 cm) rubber part bonded to grit-blasted steel; cure 48 hours at room tempera

Bond Performance of Castable Polyurethane

LORD® 7701 Adhesion Enhancer/Surface Modifier with Treatment (Cast Urethane to Natural)

 N/A 100% Rubber Failure (R) 105 to 120 lb/in

LORD® 7701 Adhesion Enhancer/Surface Modifier with Treatment (Cast Urethane to Styrene Butadiene Rubber (SBR))

 N/A 100% Rubber Failure (R) Stock Break (SB) 75 to 85 lb/in

LORD® 7701 Adhesion Enhancer/Surface Modifier with Treatment (Cast Urethane to Nitrile)

 N/A 100% Rubber Failure (R) 70 to 80 lb/in

LORD® 7701 Adhesion Enhancer/Surface Modifier with Treatment (Cast Urethane to Polychloroprene)

 N/A 100% Rubber Failure (R) 40 to 50 lb/in

LORD® 7701 Adhesion Enhancer/Surface Modifier without Treatment (Cast Urethane to Natural)

 N/A 0% Rubber Failure ( R) 10 to 15 lb/in

LORD® 7701 Adhesion Enhancer/Surface Modifier without Treatment (Cast Urethane to Styrene Butadiene Rubber (SBR))

 N/A 0% Rubber Failure ( R) 0 lb/in

LORD® 7701 Adhesion Enhancer/Surface Modifier without Treatment (Cast Urethane to Nitrile)

 N/A 0% Rubber Failure ( R) 0 lb/in

LORD® 7701 Adhesion Enhancer/Surface Modifier without Treatment (Cast Urethane to Polychloroprene)

 N/A 0% Rubber Failure ( R) 0 lb/in

Note for Bond Performance of Castable Polyurethane

 N/A 1/10" x 6" x 1" (0.3 cm x 15 cm x 2 cm) rubber part bonded to grit-blasted steel; cure 48 hours at room temperature.
ASTM D429-B 45º angle.

Features

Versatile

 N/A Functions as a cleaner and surface conditioner; treats a wide variety of elastomer functional materials.

Easy to Apply

 N/A Applies easily by wipe, brush, dip or flood methods.

Convenient

 N/A Requires no mixing.

Improved Adhesion

 N/A Improves adhesion to cast urethanes and cured rubber.

Fast Drying

 N/A Adhesion enhancer/surface modifier flashes off within five minutes or less.

Environmentally Resistant

 N/A Promotes increased environmental resistance by allowing the treated surface to be more easily wet.

Applications

Surface Preparation

 N/A Remove contaminants from rubber surface using a solvent wipe.

Applying

 N/A Apply LORD® 7701 adhesion enhancer/surface modifier by wipe, brush, dip or flood methods. Spray application is not recommended due to the reactivity of the material.

Transfer the minimum amount of material necessary for the application into a new, clean container.

Wiping (Preferred Method)

 N/A Apply adhesion enhancer/surface modifier using a clean cotton rag. Change the rag frequently as it becomes contaminated with materials picked up from the surface being treated.

Brushing

 N/A Apply adhesion enhancer/surface modifier using a bristle or foam brush. Check foam-type brushes for compatibility before use. Use bristle brushes from man-made materials. Do not allow brushes with metal handles or metal collars to come in contact with the adhesion enhancer/surface modifier.

Dipping

 N/A Immerse parts in adhesion enhancer/surface modifier. Place treated parts on a rack to allow excess material to drip off and the solvent to flash off.

Applications

 N/A To prevent contamination, discard excess material; do not return excess material to original container.

The treatment is complete after the solvent flashes off (<5 minutes). Rinsing is not necessary. The best bonds are achieved by assembling parts

Cleanup

 N/A Use ethyl acetate for clean up. In the event of a spill, use large quantities of water to flush the area.

Shelf Life/Storage

Shelf Life/Storage

 N/A Shelf life is six months from date of shipment when stored at 70-80 ºF (21-27 ºC) in original, unopened container.

Avoid storage in lit areas. Store material in original container or UV-filtering plastic or glass container. Do not store in metal co

Additional Information

Additional Information

 N/A Values stated in this technical data sheet represent typical values as not all tests are run on each lot of material produced.

Information provided herein is based upon tests believed to be reliable. In as much as LORD® Corporation has no control over the manner in which others may use this information, it does not guarantee the results to be obtained. In addition, LORD® Corporation does not guarantee the performance of the product or the results obtained from the use of the product or this information where the product has been repackaged by any third party, including but not limited to any product end-user. Nor does the company make any express or implied warranty of merchantability or fitness for a particular purpose concerning the effects or results of such use.

LORD® and "Ask Us How™" are trademarks of LORD® Corporation or one of its subsidiaries.

LORD® provides valuable expertise in adhesives and coatings, vibration and motion control, and magnetically responsive technologies. Our people work in collaboration with our customers to help them increase the value of their products. Innovative and responsive in an ever-changing marketplace, we are focused on providing solutions for our customers worldwide. Ask Us How™.