3M Scotch-Weld DP110 Gray Structural Epoxy Adhesive – 48.5 mL Dual Cartridge

3M Scotch-Weld DP110 is a versatile two-component gray structural epoxy adhesive designed for high-strength bonding of metals, composites, plastics, and wood in aerospace, automotive, and industrial applications. Its gray color provides good aesthetic compatibility with aluminum, steel, and composite surfaces commonly encountered in aerospace assembly and MRO operations.

DP110 is a 1:1 mix ratio product, dispensed through a standard dual cartridge dispenser with static mixer nozzle, ensuring accurate ratio and thorough mixing for consistent, specification-quality bonds. The cartridge format eliminates manual weighing and provides a convenient, mess-free dispensing system suitable for both production and field maintenance operations.

The cured DP110 epoxy provides excellent lap shear and tensile adhesion strength on most metallic and composite substrates, combined with good resistance to common aerospace fluids, environmental moisture, and moderate service temperatures. Its long working time allows careful positioning and assembly of bonded components before the adhesive begins to gel.

Technical Information

3M Scotch-Weld DP110 uses a bisphenol-A epoxy resin cured with an amine hardener in a 1:1 volume ratio, providing a well-balanced cure system that delivers good mechanical properties across a broad range of application conditions. The 1:1 ratio simplifies dispensing and reduces the risk of ratio errors compared to non-1:1 systems, as equal volumes of each component produce the correctly formulated mixed adhesive.

The gray pigmentation in DP110 is achieved with stable mineral pigments that provide a consistent, neutral gray appearance in the cured adhesive film. This color is compatible with aerospace primer and topcoat systems, allowing the adhesive joint to be painted over as part of a complete protective coating system if required.

Bond strength of DP110 increases progressively as the epoxy cures, reaching handling strength within a few hours at room temperature and achieving close to full strength within 24 hours. Elevated temperature post-cure accelerates strength development and improves high-temperature performance of the cured joint. Surface preparation — cleaning and light abrasion of metallic and composite substrates — is recommended to achieve maximum bond strength.

Why Choose 3M Scotch-Weld DP110?

• ✅ 3M Scotch-Weld Brand — Trusted structural adhesive for aerospace and industry
• ✅ 1:1 Mix Ratio — Simple, equal-volume dispensing minimizes ratio errors
• ✅ Gray Color — Compatible with aerospace structure surface colors
• ✅ High Bond Strength — Structural bonding of metals, composites, plastics
• ✅ Cartridge Convenience — Pre-metered, static-mixed delivery system

Applications

3M DP110 is used for aerospace panel bonding, bracket attachment, composite repair, sheet metal bonding, and general structural assembly in manufacturing and MRO environments requiring a reliable, gray structural epoxy adhesive.

Frequently Asked Questions

Q: What is 3M Scotch-Weld DP110 used for?
A: DP110 is a structural epoxy adhesive used for bonding metals, composites, and plastics in aerospace, automotive, and industrial applications requiring high strength and durable bonds.

Q: What is the MPN for 3M DP110 Gray 48.5mL?
A: MPN is 7100148777.

Q: What is the mix ratio for DP110?
A: 3M Scotch-Weld DP110 uses a 1:1 mix ratio by volume. The dual cartridge dispenser automatically delivers the correct ratio when used with the appropriate static mixer nozzle.

Q: How long does 3M DP110 take to cure?
A: DP110 achieves handling strength within several hours at room temperature and approaches full strength within 24 hours. Elevated temperature post-cure improves high-temperature performance. Refer to the 3M TDS for exact cure schedules.

Q: Can 3M DP110 be painted over?
A: Yes. The cured DP110 gray epoxy is compatible with standard aerospace primers and topcoats, allowing the bonded joint to be painted over as part of a complete protective coating system.