3M™ Scotch-Weld™ DP110 Epoxy Structural Adhesive

3M Scotch-Weld DP110 structural epoxy adhesive: features, applications, and performance

The 3M Scotch-Weld DP110 structural epoxy adhesive is a proven benchmark for demanding assemblies. It offers high mechanical strength on metals, composites, and plastics.

Its two-part epoxy system ensures a durable bond, even in environments exposed to heat, vibrations, or chemical agents.

Available at Dagobert Industrie, it is the ideal solution for professionals who do not compromise on the strength of bonded assemblies.

Presentation of the 3M Scotch-Weld DP110 epoxy adhesive

The 3M Scotch-Weld DP110 is a two-part structural epoxy adhesive designed for demanding assemblies. It offers high mechanical strength across a wide range of materials.

This product is intended for professionals who need a reliable, durable bond that resists mechanical and thermal stresses. At Dagobert Industrie, we recommend it for industrial and maintenance applications.

Composition and two-part epoxy technology

The DP110 is based on a two-part epoxy formulation: a resin and a hardener. The two components react chemically when mixed to form a rigid, permanent bond.

The mixing ratio is 1:1, which simplifies application. The 3M applicator gun ensures precise dispensing and homogeneous mixing directly from the cartridge.

Once cured, the adhesive forms a transparent to slightly amber bond that is discreet and aesthetically pleasing. It supports temperatures up to approximately 80 °C in continuous service.

The DP110 adheres to metals, rigid plastics, wood, glass, and composites. It is suitable for both assembly and gap-filling between parts.

Product	Technology	Mix ratio	Thermal resistance	Bond rigidity	Typical usage
3M Scotch-Weld DP110	Two-part epoxy	1:1	~80 °C	Rigid	Multi-material structural assembly
3M Scotch-Weld DP190	Two-part epoxy	2:1	~120 °C	Semi-flexible	Vibration-prone assemblies
3M Scotch-Weld DP460	Two-part epoxy	2:1	~150 °C	High-strength rigid	High-performance bonding, aerospace
Loctite EA 9466	Two-part epoxy	1:1	~80 °C	Rigid	General assembly, repair

Technical properties and mechanical performance

The 3M Scotch-Weld DP110 is a self-mixing two-part epoxy adhesive. It relies on epoxy-amine chemistry that generates rigid and durable bonded joints.

Tensile, shear, and harsh environment resistance

The DP110 achieves a tensile shear strength of approximately 17 to 20 MPa on steel, depending on surface preparation conditions. This is a level of performance comparable to high-performance structural adhesives on the market.

Its tensile strength (peel mode) is acceptable for a rigid epoxy, but it should primarily be used in shear or compression, epoxy joints do not handle pure peel stresses well.

Regarding harsh environments, the DP110 holds up well against common agents:

• Oils and fuels
• Aliphatic solvents
• Humidity and short-term fresh water immersion
• Temperatures up to approximately +120 °C in continuous service

The table below compares the DP110 to two similar references to help with selection:

Product	Chemistry	Shear strength (MPa)	Max temp (°C)	Bond flexibility
3M Scotch-Weld DP110	Two-part epoxy	~17-20	+120	Rigid
3M Scotch-Weld DP190	Two-part epoxy	~14-17	+120	Semi-flexible
Loctite EA 9461	Two-part epoxy	~15-18	+130	Rigid

The DP110 stands out for its high stiffness-to-mechanical strength ratio, ideal for assembling metal, composite, or technical plastic parts subjected to significant static loads.

Application fields of the Scotch-Weld DP110

The 3M Scotch-Weld DP110 is a two-part epoxy adhesive designed for demanding structural assemblies. It is suitable for both industrial applications and repair and maintenance work.

Its high mechanical strength and good vibration resistance make it a reliable choice in various sectors: electronics, construction, aerospace, automotive, and general industry.

Compatible materials: metals, composites, plastics, and wood

The DP110 adheres to a wide range of materials. This is one of its major strengths for multi-material assemblies.

Compatible materials:

• Metals: steel, aluminum, stainless steel, brass
• Composites: fiberglass, carbon fiber, SMC
• Plastics: ABS, polycarbonate, rigid PVC, polyester
• Wood and porous materials: solid wood, MDF, plywood

It is particularly suited for dissimilar assemblies, such as metal to composite or plastic to wood, without a primer in most cases.

Product	Manufacturer	Type	Shear strength	Target materials	Working time
Scotch-Weld DP110	3M	Two-part epoxy	~20 MPa	Metals, composites, plastics, wood	~100 min
Scotch-Weld DP100 Plus	3M	Two-part epoxy	~17 MPa	Metals, plastics	~20 min
Scotch-Weld DP490	3M	High-strength two-part epoxy	~35 MPa	Metals, composites	~80 min
Araldite 2011	Huntsman	Two-part epoxy	~18 MPa	Metals, composites, plastics	~90 min

Comparison: 3M Scotch-Weld DP110 versus other structural epoxy adhesives on the market

The market for structural epoxy adhesives is dense. To help choose, we have compared the 3M Scotch-Weld DP110 to a few common references.

Product	Manufacturer	Type	Mix ratio	Working time	Shear strength	Strengths
Scotch-Weld DP110	3M	Translucent epoxy	1:1	~20 min	> 20 MPa (steel)	Translucent, flexible, wide material compatibility
Scotch-Weld DP420	3M	High-strength epoxy	2:1	~20 min	> 30 MPa (steel)	Maximum mechanical strength, intensive industrial use
Araldite 2011	Huntsman	Two-part epoxy	1:1	~90 min	~18 MPa (steel)	Long working time, good impact resistance
Loctite EA 9461	Henkel	Flexible epoxy	2:1	~40 min	~15 MPa (steel)	Very flexible, good vibration resistance

The DP110 stands out for its 1:1 ratio, which simplifies dispensing and reduces mixing errors on-site or in the workshop.

Compared to the DP420 from the same manufacturer, it offers less raw strength but better flexibility. Ideal when the assembly is subject to vibrations or thermal expansion.

Compared to Araldite 2011, the DP110 cures faster, a concrete advantage in production, where cycle time matters.

The Loctite EA 9461 is even more flexible, but its shear strength remains lower. The DP110 offers a better balance of rigidity/flexibility for mixed structural applications.

In summary, the 3M Scotch-Weld DP110 is the right choice when looking for a versatile epoxy adhesive that is easy to dispense, with solid mechanical performance on metals, plastics, and composites.

Implementation tips and safety precautions

Surface preparation and curing time

Careful surface preparation is essential to obtain optimal adhesion with the DP110. Surfaces must be clean, dry, and degreased before application.

Use a suitable solvent (acetone, IPA) to remove oils, grease, and dust. On metals, light mechanical abrasion significantly improves bonding.

The DP110 is applied using a two-part distribution gun with a static mixing nozzle. The first few centimeters extruded must be purged before application to the part.

• Recommended application temperature: between 15 °C and 35 °C
• Working time (open time): approximately 90 minutes at 23 °C
• Handling strength: approximately 3 to 4 hours at 23 °C
• Full cure: 24 to 72 hours depending on ambient temperature
• A higher temperature accelerates cross-linking

Avoid assembling parts after the working time: the adhesive begins to cross-link, and mechanical performance will be significantly degraded.

Always wear nitrile gloves and safety goggles when handling. Uncured epoxy resin is irritating to the skin and mucous membranes.

Store cartridges away from heat and humidity, ideally between 5 °C and 25 °C. A new mixing nozzle must be used each time if the cartridge has already been opened.

FAQ - 3M Scotch-Weld DP110

1. What is the difference between the transparent and translucent version of the DP110?

The DP110 is available in two shades: transparent and translucent (milky white). The transparent version is ideal when the bond must be invisible on clear or glassy materials. The translucent version is better suited for assemblies where the color of the bond does not matter.

2. To which materials does the DP110 adhesive adhere?

The 3M Scotch-Weld DP110 effectively bonds a wide range of substrates: metals, rigid plastics (ABS, polycarbonate, PVC), composites, wood, and ceramic.

It is less suitable for low surface energy materials like polyethylene (PE) or polypropylene (PP), which require prior surface treatment or a specific adhesive.

3. What are the working time and curing time of the DP110?

The DP110 offers a working time of approximately 60 to 80 minutes at 23 °C, which provides a good margin for positioning parts.

Handling strength is reached in 2 to 4 hours. Full cure and maximum mechanical performance are achieved after 24 hours at room temperature.

4. Is a specific applicator gun required for the DP110?

Yes. The DP110 comes in a two-part cartridge and requires a 3M applicator gun compatible with a 1:1 mix ratio. A static mixing nozzle is essential to obtain a homogeneous mixture of the two resin and hardener components.

Without a mixing nozzle, the bond will be ineffective, and mechanical performance will be compromised.

5. Does the DP110 resist humid or submerged environments?

Yes, once cured, the DP110 shows good resistance to humidity and many common fluids (water, light oils). It is used in marine applications or outdoor environments.

For prolonged immersion or chemically aggressive environments, compatibility with the specific fluid should be validated before use.

6. What is the mechanical strength of the DP110 compared to other 3M epoxy adhesives?

The DP110 is positioned as a versatile structural epoxy adhesive with a long working time. Compared to the DP100 (4-minute working time, rigid and very strong), the DP110 offers more flexibility in implementation.

The DP420 develops higher shear strengths for very high-performance applications. The DP110 remains an excellent choice for common industrial assemblies requiring reliability and ease of application.