3M™ Scotch-Weld™ DP8805NS Acrylic Structural Adhesive

3M Scotch-Weld DP8805NS Acrylic Adhesive: Low-odor two-part structural adhesive

3M Scotch-Weld DP8805NS is a two-part structural acrylic adhesive designed for bonding difficult materials without complex surface preparation.

Its low-odor formula makes it suitable for use in workshops without heavy ventilation, a real advantage for daily operations.

It offers high mechanical strength on metals, composites, and plastics, with good resistance to impacts and vibrations.

Overview of the 3M Scotch-Weld DP8805NS acrylic adhesive

3M Scotch-Weld DP8805NS is a two-part structural acrylic adhesive designed for demanding industrial assemblies. Its "NS" (No Smell) formulation provides a very low odor, a concrete advantage for confined working environments.

It stands out for its excellent adhesion to many difficult substrates, particularly plastics, composites, metals, and painted materials, often without extensive surface preparation.

Two-part acrylic technology: operating principle

A two-part adhesive relies on two distinct components: a resin and an accelerator. Mixed via a static nozzle, they trigger a chemical reaction that produces a strong and durable joint.

Unlike epoxy adhesives, acrylic technology offers better tolerance to slightly oily or poorly prepared surfaces. The working time remains short, which speeds up production cycles.

Strengths of the DP8805NS:

• Low odor (NS formulation): improved operator comfort
• High impact and vibration resistance
• Adhesion to difficult substrates without mandatory primer
• Good resistance to temperature and common chemical agents
• Compatible with standard 3M applicator guns

At Dagobert Industrie, we offer this reference for professionals looking for reliable, quick-to-implement structural bonding in various operating conditions.

Technical properties and mechanical performance

3M Scotch-Weld DP8805NS is a 1:1 mix ratio two-part acrylic adhesive. It provides high mechanical strength on a wide range of substrates, including difficult-to-bond plastics like polyethylene and polypropylene.

The NS (No Surface preparation) suffix is key: the formulation allows for bonding without degreasing or primers on many surfaces. A concrete time-saver in production.

Its shear performance reaches approximately 10 to 14 MPa depending on the substrates. Peel and impact resistance are also very good, making it suitable for assemblies subject to dynamic stresses.

• Working time: approx. 5 minutes at 23 °C
• Full strength: reached in 24 hours
• Service temperature range: from -40 °C to +120 °C
• Mix ratio: 1:1 (volume)
• Color: light gray after curing

Product	Technology	Surface preparation	Shear strength	Main use
3M DP8805NS	Two-part acrylic	Not required (NS)	~10-14 MPa	PE/PP plastics, metals, composites
3M DP8010	Two-part acrylic	Required	~7-10 MPa	Standard plastics, metals
3M DP490	Two-part epoxy	Required	~25 MPa	Metals, high-strength structures
Loctite AA 330	Two-part acrylic	Activator required	~12 MPa	Metals, rigid plastics

Compared to an epoxy like the 3M DP490, the DP8805NS sacrifices some pure strength but gains in flexibility and tolerance to unprepared surfaces. A tradeoff that is often decisive in the workshop.

Compatible materials and application areas

The 3M Scotch-Weld DP8805NS acrylic adhesive adheres to a wide range of substrates without complex preparation. It is suitable for both painted surfaces and raw materials.

Compatible materials:

• Metals: steel, aluminum, galvanized steel, stainless steel
• Plastics: ABS, polycarbonate, polyester, nylon, SMC
• Composites: fiberglass, carbon fiber
• Wood and porous materials
• Painted and primed surfaces

A major asset: the DP8805NS bonds dissimilar materials to each other. Metal to plastic, composite to steel, in most cases without a primer.

Typical industrial applications

This structural adhesive is designed for assemblies subjected to significant mechanical stresses. It replaces or complements riveting, bolting, and welding.

Common sectors and uses:

• Bodywork and vehicles: bonding panels, structural reinforcements
• Electronics industry: fixing housings, assembling covers
• Construction and joinery: structural joints on metal or wood profiles
• Sports equipment: assembling lightweight composite parts
• General industrial manufacturing: replacing mechanical fasteners

The low-odor (NS) formulation makes this product particularly suitable for poorly ventilated work environments or enclosed workshops.

Comparison: 3M Scotch-Weld DP8805NS versus other structural acrylic adhesives

The market for two-part structural adhesives is dense. Epoxy, methacrylate, polyurethane... each family has its strengths. Here is how the DP8805NS is positioned in practice.

Its main asset: a low odor (NS = No Smell) without compromising mechanical performance. This is rare in the acrylic category, where solvents often emit strong fumes.

Comparison table of two-part structural adhesives

Product	Chemical family	Tensile strength	Odor	Working time	Compatible materials	Strong point
3M Scotch-Weld DP8805NS	Two-part acrylic	~20 MPa	Very low	~4-5 min	Metals, composites, plastics, wood	Low odor + high impact resistance
3M Scotch-Weld DP8010	Two-part acrylic	~18 MPa	Moderate	~4 min	Plastics, composites	Specialized for low-energy plastics
3M Scotch-Weld DP490	Two-part epoxy	~25 MPa	Low	~20 min	Metals, ceramics, wood	High rigidity, high temperature
Loctite EA 9430	Two-part epoxy	~22 MPa	Low	~30 min	Metals, composites	High chemical resistance
Sika SikaPower-498	Two-part epoxy	~30 MPa	Low	~60 min	Metals, automotive structures	Crash-durable, automotive industry

Compared to two-part epoxies, the DP8805NS is less rigid but much more resistant to impacts and vibrations. An epoxy joint breaks where an acrylic joint absorbs energy.

Compared to the DP8010 from the same 3M range, the DP8805NS offers wider material compatibility and higher mechanical strength, while maintaining the low odor.

The DP8805NS therefore prevails in environments with limited ventilation or on mixed metal/composite assembly lines, where an epoxy would be too rigid and a standard acrylic too odorous.

Usage tips and implementation precautions

The 3M Scotch-Weld DP8805NS acrylic adhesive comes in a two-part cartridge. It must be used with a suitable applicator gun and a 3M static mixing nozzle.

Before application, carefully prepare the surfaces: they must be clean, dry, and degreased. Cleaning with isopropanol improves adhesion on most substrates.

Purge both components at the start of the cartridge before mounting the mixing nozzle. The first extruded doses are not usable: discard them.

Respect the working time (open time) indicated by 3M. Once this delay has passed, the adhesive begins to polymerize in the nozzle. Change the nozzle every time you resume work.

Apply uniform pressure to the assembly during the initial fixture time. Clamping or mechanical holding is recommended until full setting.

Some essential precautions:

• Work in a ventilated area, even if this product is low-odor (NS) formulated
• Wear gloves and safety glasses
• Store the cartridge between 16 °C and 27 °C, away from moisture
• Do not expose the cured adhesive to temperatures above its service limit
• Consult the Safety Data Sheet (SDS) before any implementation

In case of prolonged interruption, reseal the cartridge with the used mixing nozzle: it acts as a natural plug by polymerizing at the tip.

FAQ - 3M Scotch-Weld DP8805NS Acrylic Adhesive

1. What is the difference between DP8805NS and a classic epoxy adhesive?

3M Scotch-Weld DP8805NS is a two-part structural acrylic adhesive, not an epoxy. It offers significantly higher impact and vibration resistance than most rigid epoxies.

Classic epoxies are more brittle under dynamic stress. Acrylic remains flexible while maintaining high structural hold.

2. What does "NS" mean in the product name?

NS stands for "No Solvant" (No Solvent). The formula emits very few volatile organic compounds and generates a low odor during application.

This is a concrete advantage in a workshop or poorly ventilated space, without sacrificing assembly performance.

3. On which materials can DP8805NS be used?

It effectively bonds metals (steel, aluminum, stainless steel), composites (fiberglass, carbon), structural plastics, and dissimilar materials.

It is particularly suitable for multi-material assemblies where thermal expansion coefficients differ.

4. Do surfaces need to be prepared before bonding?

Yes. Careful degreasing is essential. On metals, light abrading improves bonding.

On low-surface-energy plastics (PE, PP), a primer or plasma treatment may be necessary to achieve optimal bonding.

5. What is the working time after mixing?

DP8805NS has an open time of approximately 3 to 4 minutes at 23 °C. This delay allows you to position the parts without rushing.

Handling strength is reached in 15 to 20 minutes. Final strength is obtained after 24 hours of full curing.

6. Does DP8805NS resist harsh environments?

Yes. It holds up well against moisture, light oils, and temperature variations. It is used in the automotive, aerospace, and electronics industries.

For highly aggressive chemical exposures (strong solvents, concentrated acids), it is advisable to validate the specific chemical resistance according to your application.