General Description of 3M Scotch-Weld One-Part Epoxy Adhesive 6101 Off-White
3M Scotch-Weld One-Part Epoxy Adhesive 6101 Off-White is a thixotropic, single-component structural epoxy engineered for precision bonding in consumer electronics manufacturing. Its non-sag, medium-viscosity formula (30,000 cP Brookfield) flows readily under application pressure and holds position after dispensing — delivering a uniform, controlled bond line on vertical and complex geometries without slumping or running.
A built-in UV tracer enables instant inline inspection: shine a UV light and the adhesive fluoresces clearly, allowing automated optical inspection (AOI) systems and operators to confirm full coverage before cure. Like all 3M 6100 Series adhesives, 6101 Off-White cures at just 65°C in approximately 20 minutes — a critical advantage over conventional epoxies requiring temperatures above 125°C that can melt plastics, degrade batteries, or demagnetize components. A snap-cure option at 90°C (≈3 minutes) is available for high-throughput lines. Pot life exceeds 4 weeks at room temperature, eliminating the time pressure of two-part systems.
Features & Benefits
- Thixotropic non-sag formula (30,000 cP Brookfield): ideal for bead dispensing and stencil printing on electronics substrates — holds shape on any orientation
- UV tracer for inline inspection: fluorescent under UV light enables 100% coverage verification before thermal cure; reduces rework and scrap
- Low-temperature cure at 65°C (≈20 min): protects heat-sensitive substrates — batteries, polycarbonate, PBT, thin-wall plastics — without thermal damage
- Snap cure at 90°C (≈3 min): increases throughput on heat-tolerant assemblies without compromising final bond strength
- Excellent impact resistance: 2.4 J tensile impact on aluminum with 100% elongation — absorbs drop shock in smartphones and wearables
- Strong adhesion to mixed substrates: 32 MPa (Al-Al), 23 MPa (Al-SUS), proven retention after 36 thermal cycles (-40°C to 85°C) and 72 hours humidity soak
- Screen/stencil printable: suitable for high-volume patterned adhesive deposition on PCBs and electronic housings
- Halogen-targeted compliance (IEC 61249-2-21): supports RoHS/REACH requirements in consumer electronics supply chains
- One-part convenience: no mixing, no pot-life countdown after opening — use directly from 30 mL syringe
Typical Applications of 3M Scotch-Weld One-Part Epoxy Adhesive 6101 Off-White
- Structural bonding of smartphone and tablet housing components
- PCB component bonding and circuit protection
- Wearable electronic device assembly
- Screen printing and stencil printing of adhesive patterns on electronics
- Fine-bead dispensing for small electronic assemblies
- Sensor, camera module, and actuator attachment
About Prostech
Prostech offers specialty materials (adhesives, tapes, thermal interface materials, insulating materials, sealants, PCB protection materials, …) along with manufacturing solutions. We proudly serve a wide range of industries and are an authorized distributor for leading global manufacturers of industrial materials and equipment. Our product range is designed to deliver customized solutions that address each customer’s unique needs.
With years of experience and a successful project history, we are confident in our ability to provide comprehensive material solutions. These solutions effectively tackle the challenges manufacturers face. To explore our full product catalog, simply click here. Our dedicated team is ready to assist with:
- Provide quotation, sample, TDS/MSDS, and technical consultation
- Testing sample quality and verifying product compatibility in our laboratory
- Customizing material formulas for special applications
- Adapting product sizes, quantities, and packaging to meet specific needs
- Offering expert advice on suitable equipment and automation processes
- Delivering technical training and on-site support for optimal product use
Moreover, Prostech ensures the safe and accurate global delivery of all materials, including “dangerous goods”, in compliance with legal regulations. For personalized technical support or to receive a quotation, please contact us today.
| Property | Value |
|---|---|
| Components | One-part (1-Part) |
| Color | Off-White |
| Viscosity (Cone & Plate @ 5 Hz) | 50,000 cP |
| Viscosity (Brookfield) | 30,000 cP |
| UV Fluorescent Tracer | Yes — Verify via UV light |
| Pot Life (@ 25°C) | > 4 weeks |
| Halogens (Cl, Br) | Compliant with IEC 61249-2-21 (Target) |
| Cure Time @ 65°C | ≈ 20 minutes (90% cure via DSC) |
| Cure Time @ 90°C | ≈ 3 minutes (90% cure via DSC) |
| Tensile Strength | 27 MPa (ASTM D638) |
| Elongation at Break | 100% (ASTM D638) |
| Young’s Modulus | 300 MPa (ASTM D638) |
| Aluminum Tensile Impact Strength | 2.4 J (Drop hammer test) |
| Lap Shear Strength – Al/Al | 32 MPa |
| Lap Shear Strength – Al/SUS | 23 MPa |
| Lap Shear Strength – Al/PC-ABS | 6 MPa |
| Lap Shear Strength – Al/PC | 10 MPa |
| Lap Shear Strength – Al/30% Glass Fiber PC | 15 MPa |
| Lap Shear Strength – Al/50% Glass Fiber Polyamide | 9 MPa |
| Thermal Cycle Retention (Al-Al) | 100% after 36 cycles, -40°C to 85°C |
| Damp Heat Retention (Al-Al) | 91% after 72 hrs @ 65°C/90% RH |
| Application Method | Dispensing, Jetting, Screen/Stencil Printing |
| Shelf Life | 18 months when stored at -20°C (-4°F) |
| Packaging | 30 mL syringe |
