3M 7000121212 Green Two-Part Epoxy Adhesive - Base & Accelerator (B/A) - 1 gal Kit

3M Scotch-Weld 1838 green two-part epoxy adhesive is compatible with ceramic, fiberboard, glass, metal and wood materials with a 7 day cure time. Provides a 60 min working time. Works in a mix ratio of 4:5. Delivers great performance with a shear strength of 3000 psi, tensile strength of 4290 psi and peel strength of 4 piw. Comes in a 1 gal Kit. This epoxy adhesive is packaged 1 gal per inner, 2 per case.
Specifications:

3M Number: 1838

Material Compatibility:

• Ceramic
• Fiberboard
• Glass
• Metal
• Wood

Shear Strength: 3000 psi

Shelf Life: 24 mo

Viscosity Measurement: 300000 to 1000000 cPs

Specification parameters description:
Material Compatibility:
Material compatibility lists which materials the product fills. Acrylic adhesives are suitable for use on a wide range of materials including wood, ceramic, fiberglass, metal, and plastic. Contact adhesive is typically used on wood, drywall, concrete, and vinyl. Methacrylate adhesives are compatible with metal, acrylic, PVC, and gelcoat. In addition to material compatibility, other factors may determine the best type of adhesive for a certain application such as brittleness, flexibility, and the adhesive?s resistance features.
Cure Time:
Cure time is the length of time it takes for the adhesive to completely dry or harden. Different cure times may determine the best application method of the adhesive. Since most polyurethane adhesives cure quickly, dispensing machines are ideal in these applications. Light curing adhesives require light sources within specific wavelengths to cure where the strength of the light source affects cure time. Depending on the particular adhesive, temperature and humidity greatly increases or decreases the actual cure time. Many acrylic adhesives cure quicker than epoxies.
Exact Working Life:
For two-part adhesives, working life refers to the duration of time the adhesive must be used once the two parts are mixed and before the adhesive sets. An adhesive's working life varies from a few minutes to several hours. An adhesive with a long working life is commonly used to bond large objects and for setting varied parts. Working life is also referred to as worklife and pot life.
System..Base or Accelerator:
Base & Accelerator (B/A) Base and accelerator (B/A) products contain both components of a two-part adhesive. Generally stronger than one-part adhesives, the two parts must be mixed at the designated ratio. The accelerator, also known as a hardener, causes a chemical reaction with the base to form the cured adhesive. Improper B/A mixtures may form a weaker bond or fail to harden. The most common mix ratio is 1:1, which results in a simple mixing process. Temperature and humidity may affect the cure time of two-part adhesives.
Mix Ratio:
Mix ratio is the required relative proportion of epoxy resin to hardener. Two-part epoxy adhesives cure based on a chemical reaction. If the proper mix ratio is not achieved, the epoxy will not reach its optimal state. Improperly mixed epoxy may form a weaker bond or fail to harden. The most common ratio is 1:1 because of the ease of mixing and relatively quick cure time. Higher mix ratios, including 2:1 and 3:1, may be ideal in applications that benefit from longer cure times, such as the need to reposition items.