3M™ Scotch-Weld™ DP8910 Acrylic Structural Adhesive

3M Scotch-Weld DP8910 acrylic adhesive: features, applications, and performance

The 3M Scotch-Weld DP8910 acrylic adhesive is a benchmark for high-performance structural bonding. It bonds quickly, holds firmly, and resists the most demanding mechanical stresses.

Its two-part formula offers exceptional adhesion to metals, composites, and plastics, without complex surface preparation.

It is the adhesive of choice when you want a permanent solution. Available at Dagobert Industrie, delivered quickly for your projects and workshops.

Overview of the 3M Scotch-Weld DP8910 acrylic adhesive

The 3M Scotch-Weld DP8910 is a two-part structural acrylic adhesive designed for demanding assemblies. It offers high mechanical strength on a wide range of materials, including surfaces with little preparation or that are slightly oily.

At Dagobert Industrie, we offer this product to professionals who need a reliable, fast, and durable adhesive in an industrial environment.

Composition and two-part acrylic technology

The DP8910 is based on a two-part reactive acrylic technology: a resin and an activator. Mixing triggers a rapid polymerization that generates very strong bonds.

Unlike two-part epoxy adhesives, structural acrylics like the DP8910 better tolerate contaminated or un-degreased surfaces. This is a practical advantage in the workshop or in production.

The mixing ratio is 1:1, which simplifies application with a dual-cartridge gun and a static mixing nozzle. No weighing, no calculations.

Main technical characteristics:

• Work life: approximately 8 to 10 minutes after mixing
• Shear strength: up to 20 MPa depending on the substrate
• Temperature range: use from -40 °C to +120 °C
• Compatible substrates: metals, composites, plastics, wood
• Impact and vibration resistance: excellent

Product	Type	Work life	Impact resistance	Oily surfaces
3M Scotch-Weld DP8910	Two-part acrylic	~10 min	Excellent	Yes
3M Scotch-Weld DP490	Two-part epoxy	~20 min	Good	No
Loctite EA 9492	Two-part epoxy	~25 min	Good	No
Sika SikaPower-498	Hybrid epoxy-acrylic	~15 min	Very good	Partial

Technical properties and mechanical performance

The 3M Scotch-Weld DP8910 is a 1:1 mix two-part acrylic adhesive. It cures at room temperature without the need for heat or UV.

Its shear strength reaches up to 20 MPa on steel, depending on surface preparation. This is a solid value for a structural acrylic.

The work life is approximately 10 minutes after mixing. Mechanical strength sufficient for handling is reached in 20 to 30 minutes.

The adhesive withstands service temperatures of -40 °C to +120 °C. It retains its mechanical properties in humid environments or when exposed to common solvents.

It offers good impact and vibration resistance, thanks to a moderate elastic modulus. The bond remains slightly flexible after complete polymerization.

Product	Type	Shear strength	Work life	Flexibility
3M DP8910	Acrylic 1:1	~20 MPa	~10 min	Moderate
3M DP8005	Acrylic 1:1	~14 MPa	~4 min	Low
Loctite EA 9466	Epoxy 1:1	~18 MPa	~90 min	Low
Sika SikaPower-498	Modified epoxy	~25 MPa	~30 min	High

Compared to a standard epoxy, the DP8910 better tolerates slightly oily or poorly degreased surfaces. This is a practical advantage in the workshop or in production.

Areas of application and compatible materials

The 3M Scotch-Weld DP8910 is a two-part acrylic adhesive designed for demanding structural assemblies. It is suitable for both serial production and one-off industrial repairs.
It is particularly well-suited for the following sectors:

• Automotive industry: bonding body panels, reinforcements, and trim parts
• Construction and building: assembling metal profiles, composite panels, and facade elements
• Electronics and electrotechnology: attaching components to rigid supports
• Marine and transport: bonding structures exposed to vibrations and thermal variations

Recommended substrates and surface preparation

The DP8910 adheres effectively to a wide range of substrates, making it a versatile adhesive for multi-material workshops.
Compatible substrates:

• Metals: steel, aluminum, stainless steel
• Plastics: ABS, PC, PVC, polyester
• Composites: fiberglass, carbon fiber, SMC
• Painted or coated materials (depending on preparation)

Surface preparation remains critical for the durability of the bond. For metals, degreasing with isopropanol or acetone is generally sufficient. For low surface energy plastics (PP, PE), a primer or plasma treatment is recommended before application.
A clean and dry joint ensures optimal mechanical strength. At Dagobert Industrie, we recommend testing adhesion on a representative sample before any production bonding.

Comparison: 3M Scotch-Weld DP8910 against other structural acrylic adhesives

The market for two-part structural acrylic adhesives is dense. Here is how the DP8910 compares to the most common benchmarks.

Comparative table of the main two-part acrylic references

Product	Manufacturer	Mixing ratio	Work life	Tensile strength	Strengths
Scotch-Weld DP8910	3M	1:1	~10 min	~20 MPa	Excellent impact resistance, low surface preparation
Scotch-Weld DP8005	3M	4:1	~4 min	~17 MPa	Bonding polyolefins without primer, fast set
Scotch-Weld DP8425	3M	1:1	~25 min	~22 MPa	High mechanical strength, metals and composites
Araldite 2021	Huntsman	1:1	~25 min	~18 MPa	Good chemical resistance, versatile
Loctite AA 330	Henkel	-	~5 min	~15 MPa	UV setting possible, metals and rigid plastics

The DP8910 stands out for its simplified 1:1 ratio and its tolerance for minimally prepared surfaces. This is a practical advantage in production or workshops.

Compared to the DP8005, it offers a longer work life, useful for complex assemblies or large surfaces.

Compared to Araldite 2021 or Loctite AA 330, the DP8910 displays better impact and vibration resistance. A decisive criterion in dynamic industrial applications.

At Dagobert Industrie, we recommend the DP8910 for any multi-material assembly requiring reliability and speed of implementation.

Conditions of use, storage, and safety

The 3M Scotch-Weld DP8910 is a two-part acrylic adhesive. It requires a few simple precautions to ensure reliable and long-lasting bonds.

Before application, surfaces must be clean, dry, and degreased. Cleaning with isopropanol or acetone significantly improves adhesion, particularly on plastics and metals.

The optimal application temperature is between 15 °C and 35 °C. Below 10 °C, polymerization slows down significantly and the final mechanical performance may be reduced.

It is imperative to respect the open time indicated by 3M before assembling the parts. Once mixing has begun in the gun, work without prolonged interruption.

Storage

• Store between 16 °C and 27 °C, away from heat and frost
• Shelf life: 12 months from the date of manufacture
• Keep away from sources of ignition and direct light
• Store cartridge upright, with cap screwed on after use

Safety

• Wearing nitrile gloves and safety goggles is recommended
• Work in a well-ventilated space: acrylic vapors can be irritating
• Consult the 3M Safety Data Sheet (SDS) before first use
• In case of skin contact, wash immediately with soap and water

At Dagobert Industrie, we provide the full product SDS. Do not hesitate to download it from the product sheet before use in the workshop.

FAQ - 3M Scotch-Weld DP8910

1. On which materials is the DP8910 effective?

The 3M Scotch-Weld DP8910 is formulated to bond materials that are difficult to assemble without intensive surface preparation.

It adheres to low surface energy plastics such as PP and PE, as well as metals, composites, and painted substrates.

2. Is a primer or surface preparation required?

This is one of the great strengths of the DP8910: it does not require a primer on most plastic substrates.

Simple degreasing with isopropanol is sufficient in the majority of cases. This reduces preparation time and simplifies the assembly process.

3. What is the work life available after mixing?

The DP8910 offers a work life of approximately 4 minutes after extrusion through the static mixing nozzle.

This time allows parts to be positioned without rushing. After this time, the adhesive begins to polymerize and repositioning becomes impossible.

4. Does the DP8910 resist impact and vibration?

Yes. Impact and vibration resistance is precisely one of the strengths of this structural acrylic adhesive.

Its formulation creates a flexible and tough joint, suited for assemblies subjected to dynamic stresses in an industrial environment.

5. What is the difference between the DP8910 and the 3M DP8005?

The DP8005 is more oriented toward bonding pure polypropylene with high shear strength on that specific substrate.

The DP8910 offers a wider range of compatible substrates and better impact resistance. The choice depends on the pair of materials to be assembled.

6. Is the DP8910 suitable for outdoor use?

The DP8910 acrylic adhesive shows good weather and UV resistance once polymerized.

It is used in exposed automotive and industrial applications, which confirms its suitability for demanding outdoor environments.