LORD 320/322 Thick Gel Medium-Set 20-40 minute General Purpose Epoxy Adhesive (3003632, 3003631)

Product Name

LORD 320/322 Thick Gel Medium-Set 20-40 minute General Purpose Epoxy Adhesive (3003632, 3003631)

Brief Description

LORD 320/322 adhesive is a general-purpose, two-component epoxy adhesive system. It is specifically formulated for primerless adhesion to automotive sheet molded compounds (SMC) and provides excellent bonding to a wide range of other substrates. This adhesive system offers a medium set time of 20-40 minutes, allowing for versatile application in various industrial and automotive settings.

Popular Applications & Uses

- Automotive panel bonding (SMC, metal, composite panels)- Assembly of fiberglass and composite structures- Bonding rubber components to metal frames- Industrial equipment assembly and repairs- Bonding metal base plates to concrete, concrete block to concrete, and metal base plates to ceramic tiles in solar applications

Industries that Commonly Use It

- Automotive Service/Repair- General Manufacturing- Metal Fabrication- Plastic Fabrication- Construction/ Building Services- Energy (Solar Applications)- Fabrication

Special and Unique Features

- Primerless adhesion to automotive sheet molded compounds (SMC)- Durable, providing load-bearing properties equal to or greater than the materials being bonded- Offers impact resistance down to -40°F (-40°C)- Environmentally recommended: contains no solvent, nonflammable, and virtually odorless- Environmentally resistant: resists humidity, sunlight, salt spray, and temperature extremes- High temperature resistant: resists postbakes up to 400°F (204°C)- Chemically resistant: solvent resistant when cured; anti-corrosion processes including phosphatizing and e-coat coatings do not affect the adhesive or its bond strength- Can be room temperature cured or heat cured for faster processing

Key Properties

- Mix Ratio (by volume): 1:1- Work Time @ 75°F (24°C): 20-40 minutes- Handling Strength: 2-4 hours- Full Cure Time @ RT: 24 hours- Accelerated Cure @ 180°F (82°C): 45-60 minutes- Tensile Strength: 4,440 psi (30.6 MPa)- Elongation: 3%- Cured Appearance: Grey paste (mixed appearance)- Viscosity (Part A): 300,000 - 1,000,000 cP @ 77°F (25°C)- Viscosity (Part B): 450,000 - 2,000,000 cP @ 77°F (25°C)- Solids Content: 100%- Odor: Odorless

Surface Compatibility

- Automotive Sheet Molded Compounds (SMC)- Prepared Metals (cold rolled steel, aluminum)- Rubber (with LORD 7701 adhesion enhancer for cured rubber)- Fiberglass Reinforced Plastics (FRP)- Polyester Thermosets- Thermoplastics- Concrete- Ceramic Tiles (with buffing for shiny surfaces, and LORD AP-134 adhesion enhancer for glass and ceramic)- Glass (with LORD AP-134 adhesion enhancer)

Known backups / known substitutes

- LORD 310 Epoxy Adhesive- LORD 370 (370A/B) Epoxy Adhesive- LORD 305 Epoxy Adhesive- 3M Scotch-Weld- Loctite (e.g., Loctite EA Hysol E-30CL)- Devcon (e.g., Devcon 2-Ton Epoxy, Devcon 10-Minute Black Epoxy)- Hardman Double Bubble Epoxy & Urethane- Araldite (e.g., Araldite 2011)- Permabond (e.g., Permabond ET5147)- Maven Adhesives

Comparison Note

LORD 320/322 is a versatile, general-purpose, two-component epoxy adhesive system that provides a robust balance of strong, durable, and environmentally/chemically resistant bonds. Its notable primerless adhesion to SMC and broad material compatibility make it a preferred choice for demanding industrial and automotive applications, setting it apart from more specialized or faster/slower curing alternatives.