3M™ Scotch-Weld™ DP8710NS Acrylic Structural Adhesive

3M Scotch-Weld DP8710NS Acrylic Adhesive: Low-Odor Two-Part Structural Adhesive

3M Scotch-Weld DP8710NS is a two-part structural acrylic adhesive designed for bonding difficult materials without the need for a primer.

Its low-odor formula makes it suitable for use in poorly ventilated environments without compromising mechanical strength.

It effectively bonds metals, composites, plastics, and wood, offering excellent resistance to impact and vibration.

Presentation of the 3M Scotch-Weld DP8710NS Acrylic Adhesive

3M Scotch-Weld DP8710NS is a two-part acrylic-based structural adhesive, designed for bonding materials that are difficult to adhere without complex surface preparation.

Its main advantage: a low-odor formulation (NS = No Smell), which distinguishes it from conventional structural acrylics. It can be used in spaces with limited ventilation without any special constraints.

Composition and two-part acrylic technology

Like all two-part adhesives, the DP8710NS consists of two distinct components: an acrylic resin and a hardener. Mixing them triggers a chemical reaction that creates a strong, durable joint.

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

Acrylic technology offers excellent adhesion to metals, composites, thermoplastics, and painted materials, often without a primer. This results in direct time savings in production or workshops.

The cured joint exhibits good resistance to impact and vibration, making it a relevant choice for assemblies subjected to dynamic stresses.

Product	Technology	Mixing ratio	Low odor	Impact resistance	Typical use
3M Scotch-Weld DP8710NS	Two-part acrylic	1:1	✔ Yes	High	Metals, composites, thermoplastics
3M Scotch-Weld DP8005	Two-part acrylic	4:1	✘ No	Very high	Polyolefins, PE, PP without primer
3M Scotch-Weld DP490	Two-part epoxy	2:1	✘ No	Moderate	High-strength rigid assemblies
Loctite EA 9430	Two-part epoxy	2:1	✘ No	Moderate	Metals, ceramics, rigid composites

Technical properties and performance of the DP8710NS

3M Scotch-Weld DP8710NS is a two-part structural acrylic adhesive with a 1:1 ratio. Its low-odor formulation (NS = No Smell) clearly sets it apart from conventional structural acrylics, which are often difficult to use in confined spaces.

The assembly time is approximately 8 to 10 minutes, with handling strength reached in 20 to 30 minutes. Complete polymerization occurs in 24 hours at room temperature.

The DP8710NS develops high mechanical strengths:

• Tensile shear strength: ≈ 17 MPa on steel
• Peel strength: good holding power on rigid substrates
• Temperature resistance: from -40 °C to +120 °C continuously

This adhesive bonds without extensive surface preparation to a wide range of materials: steels, aluminum, composites, engineering plastics (ABS, PC, rigid PVC). It tolerates slightly oily or poorly prepared surfaces better than a standard epoxy.

Here is how the DP8710NS compares to other common structural adhesives:

Product	Type	Ratio	Odor	Shear strength	Max temperature resistance
3M DP8710NS	Acrylic	1:1	Low	≈ 17 MPa	+120 °C
3M DP8005	Acrylic	1:1	Strong	≈ 14 MPa	+120 °C
3M DP490	Epoxy	2:1	Low	≈ 25 MPa	+150 °C
Loctite EA 9466	Epoxy	1:1	Low	≈ 20 MPa	+130 °C

Compared to an epoxy like 3M DP490, the DP8710NS offers better flexibility and faster application. Epoxy remains superior in raw strength and extreme thermal resistance.

At Dagobert Industrie, we recommend the DP8710NS for structural assemblies in workshops or poorly ventilated areas, where reducing fumes is a real constraint for safety and operator comfort.

Compatible materials and industrial application areas

The 3M Scotch-Weld DP8710NS acrylic adhesive adheres to a wide range of substrates, including surfaces that are poorly prepared or slightly oily.

It is particularly effective on metals (steel, aluminum, stainless steel), structural plastics (ABS, PC, PVC, polyester), and composites (fiberglass, carbon fiber).

It is also suitable for wood, porous materials, and multi-material assemblies, where other adhesives require a primer or surface pretreatment.

Typical application areas:

• Automotive industry: fixing reinforcements, assembling body parts and interior elements
• Construction and building: bonding metal profiles, composite panels, joinery
• Electronics and electrical engineering: assembling housings, fixing structural components
• General industry: repair and assembly of parts in the workshop, partial replacement of welding
• Marine and transport: hull bonding, fiberglass structures, sandwich panels

Its low odor level (NS = No Smell) makes it suitable for confined or poorly ventilated work environments, unlike many standard acrylic adhesives.

At Dagobert Industrie, we recommend this product for all assemblies requiring high mechanical strength without resorting to welding or riveting.

Comparison: 3M Scotch-Weld DP8710NS versus other structural acrylic adhesives

The market for two-part structural acrylic adhesives is broad. Here is how the DP8710NS positions itself in practical terms against its direct competitors.

Its main difference: a low-odor formulation (NS = No Smell). On a construction site in a confined space or in a poorly ventilated workshop, this is a real advantage compared to classic acrylics like 3M DP8005 or Plexus MA300.

In mechanical strength, it compares favorably with market references. The shear strength exceeds 15 MPa on steel, making it a true structural adhesive, not just a light assembly product.

Comparison table of two-part acrylic adhesives from 3M and other manufacturers

Product	Manufacturer	Mixing ratio	Working time	Shear strength (steel)	Low odor	Typical uses
Scotch-Weld DP8710NS	3M	1:1	~8 min	≥ 15 MPa	✅ Yes	Metals, composites, plastics, confined spaces
Scotch-Weld DP8005	3M	4:1	~4 min	~14 MPa	❌ No	Polyolefins, difficult plastics
Scotch-Weld DP8010	3M	4:1	~6 min	~13 MPa	❌ No	Polyolefins, light assemblies
Plexus MA300	ITW Plexus	1:1	~5 min	~16 MPa	❌ No	Composites, marine, transport
Araldite 2021	Huntsman	1:1	~25 min	~12 MPa	❌ No	Metals, glass, ceramic

The DP8710NS is the only one in this comparison to combine a 1:1 ratio, low odor, and high structural strength. Araldite 2021 offers more working time, but with lower resistance and a pronounced odor.

For applications in closed industrial environments, bodywork, or assembly of composite panels, the DP8710NS remains the most versatile choice in this selection.

Implementation advice and precautions for use

Before any application, carefully degrease and dry the surfaces to be bonded. A suitable solvent (isopropanol, acetone) removes oils, dust, and residues that compromise adhesion.

Use a dispensing gun suitable for two-part cartridges and mount a new mixing nozzle before each session. The first few centimeters extruded are used to purge the mixer: do not apply them to the part.

Observe the open time indicated by 3M before assembling the parts. Once the substrates are in contact, maintain pressure until initial set to ensure a homogeneous joint.

The DP8710NS is formulated as low-odor, but work in a ventilated space. Wearing nitrile gloves and safety glasses is recommended throughout handling.

After use, do not remove the mixing nozzle: it acts as a cap and protects the cartridge until the next use. Store the cartridge away from heat and humidity.

For structural assemblies on metals, composites, or plastics, light mechanical abrasion of the surfaces significantly improves the final joint strength. This step is particularly recommended on stainless steels and low-surface-energy thermoplastics.

FAQ - 3M Scotch-Weld DP8710NS Acrylic Adhesive

1. What is the difference between DP8710NS and other 3M structural acrylics?

3M Scotch-Weld DP8710NS is distinguished by its low-odor formulation ("NS" for No Smell). Unlike references such as DP810 or DP820, it is much better tolerated in poorly ventilated workshops or confined spaces.

2. What materials does the DP8710NS work on?

It effectively bonds metals, composites, structural plastics (ABS, polyester, SMC), and wood. It excels particularly in multi-material assemblies where welding or screwing are not feasible.

3. Is it necessary to prepare the surfaces before application?

Yes. Careful degreasing is essential to achieve maximum strength. On oxidized metals or difficult plastics (PP, PE), a primer or light abrasion significantly improves adhesion.

4. What is the working time available after mixing?

The DP8710NS is a two-part adhesive: it is mixed via a static dosing nozzle. Its open time is approximately 10 minutes, which allows time to position the parts before it sets. Full structural strength is reached after 24 hours at room temperature.

5. Can it be used outdoors or in humid environments?

Yes. Resistance to weather and humidity is one of the strengths of 3M Scotch-Weld structural acrylics. The DP8710NS also supports good temperature ranges in service, making it suitable for exposed industrial applications.

6. Does the DP8710NS replace a classic epoxy adhesive?

In many cases, yes. It offers higher peel and impact resistance than most standard epoxies. However, for very high thermal resistance (>120 °C) or extreme rigidity, a high-performance epoxy remains more suitable.