3M Scotch-Weld EPX TM TM Two-component structural adhesives and applicator guns Innovation What is a structural adhesive? 3M's high-strength structural adhesives are fundamentally load-bearing formulations. Bond strength is often as strong as, or stronger than the materials joined. Even a bonded area of 10 cm2 (like in this picture) is sufficient to lift an average family car off the ground! In general, these structural adhesives have enough cohesive strength and creep resistance to permanently bond high-strength materials and they have the potential to replace mechanical and fusion fastening in many applications. The aircraft industry is one of the pioneers in use of structural adhesives. Many other industries have also been taking advantage of 3M's advanced formulations and innovative dispensing. The 3MTM EPX application system for 2-component structural adhesives provides quick, economic, clean, precise processing and quick set-up times. It consists of: EPX manual applicators or EPX air-powered applicators Two-component adhesives in double cartridges Static mixing nozzles The adhesive can be applied at selected points or in a continuous bead. Dosing, mixing and application are all achieved in one action, delivering constant, defined quality. These 3M structural adhesives achieve permanent high strength bonds with many materials such as metals, glass, ceramics, wood, technical plastics and rubbers etc. Specifications Product no. Adhesive type Description EPOXY formulations DP 100 rigid For metals, glass, ceramics and other materials. High shear strength for static loads. Excellent flow behaviour, therefore also well suited for potting. UL-listed. DP 105 highly flexible Particularly for materials with different, high expansion factors. High strength. Very good flow behaviour, therefore also very well suited for potting. DP 110 thoughened Especially good for bonding metal and plastic, for static and dynamic loads. DP 125 flexible Especially good for bonding plastic and for metals, where flexibility and peel strength are required. As DP 190, but with quicker time to handling strength. DP 190 flexible Especially good for bonding plastic and some types of rubber, as well as for metals, when flexibility and peel strength are required. UL-listed. DP 270 fluid Especially good for electronics. For potting, protection and sealing. No corrosion on copper, minimal exothermal reaction (heat development) and shrinkage (therefore also for bonding optical parts, e.g. lenses). UL-listed. DP 410 thoughened Outstanding stability under static and dynamic loads. High resistance to impact. Very good strength and excellent ageing characteristics. DP 460 thoughened As DP 410, but longer work life. UL-listed. DP 490 thoughened As DP 410, but with high temperature resistance (120C). Thixotropic formulation, non-sag properties enable easy application to vertical surfaces. DP 760 rigid Especially for applications that require very high temperature resistance (230C). POLYURETHANE formulations DP 609 flexible Especially for plastics and wood. Good peel strength, viscosity and flexibility. Minimal flow. DP 610 flexible As DP609, but transparent, non-yellowing UV-resistant characteristics make it ideal for applications that require long term transparency and good visual effect. Good flow behaviour. ACRYLIC formulations DP 801 thoughened Very good for plastics, elastomers and metals. Good resistance to impact. For static and dynamic loads. Short work life results in a fast development to handling strength. DP 810 thoughened As DP 801, but longer work life. Significantly less odour that most acrylic adhesives. DP 8005 thoughened New, innovative product especially for bonding Low Surface Energy plastics (like PE or PP) together or with other materials, without surface pre-treatment. DP 8010 thoughened As above, longer work life of 10 minutes. Critical adhesive characteristics Rigid adhesive types for applications with static loading and high shear strength (DP 100, DP 270, DP 760) Flexible adhesive types for dynamic and shock loads (DP 105, DP 125, DP 190, DP 609, DP 610) Toughened adhesive types which combine the advantages of hard and flexible types, i.e. with good peel strength, high shear strength and good impact resistance (DP 110, DP 410, DP 460, DP 490, DP 801, DP 810) Useful adhesive terminology Structural Adhesive = Practical bond strength is at least 7 MPa in overlap shear at 24 C. Handling strength = the time it takes assembled parts to reach a strength where further handling and processing can take place. Time will be dependant on the surface to be bonded, temperature and humidity. Product No. Colour Mix ratio (B:A) Work life (minutes) Work life = the time during which an adhesive is liquid enough to adequately wet-out on a substrate. MPa = 1 MPa = 1 N/mm2 = 145 psi N/cm = Newton / 1 cm width. Time to handling strength Viscosity Shear strength Peel strength (Aluminium, MPa) (Aluminium, N/cm) Temperature -55C +23C +80C EPOXY formulations DP 100 transparent 1:1 3 to 5 min. 15 min. fluid 6 9 2 4 -50 to 80C DP 105 transparent 1:1 4 to 5 min. 20 min. fluid 24 14 2 62 -50 to 80C DP 110 translucent or grey 1:1 8 to 10 min. 20 min controlled flow 14 18 1 35 -50 to 80C DP 125 grey 1:1 25 min. 2 to 3 hrs controlled flow 24 24 3 62 -50 to 80C DP 190 grey 1:1 90 min. 4 to 6 hrs controlled flow 11 18 3 21 -50 to 80C DP 270 transparent or black 1:1 60 to 70 min. 4 to 6 hrs 17 2 <4 -50 to 80C DP 410 off white 2:1 8 to 10 min. 30 min. 29 34 8 100 -50 to 80C DP 460 off white 2:1 60 min. 4 to 6 hrs controlled flow 31 31 5 107 -50 to 80C DP 490 black 2:1 180 min. 4 hrs thixotropic 24 30 12 92 -50 to 120C DP 760 white 2:1 45 to 60 min. 4 to 6 hrs thixotropic 20 29 24 60 -50 to 230C fluid thixotropic 8 POLYURETHANE formulations DP 609 off white 1:1 7 min. 45 min. low 17 14 2 70 -50 to 80C DP 610 clear 1:1 10 min. 2 hrs fluid 34 23 3 78 -50 to 80C ACRYLIC formulations DP 801 green 1:1 1 to 2 min. 7 min. controlled flow 19 13 2 24 -50 to 80C DP 810 green 1:1 8 min. 10 to 15 min. controlled flow 8 30 3 52 -50 to 80C DP 8005 white 10:1 2 to 3 min. 90 min. thixotropic low 12* 6* 2* 28** -50 to 80C DP 8010 white 10:1 10 min. 120 min. 6* 10* 2* 28** -50 to 80C * PP/PP ** HDPE thixotropic EPX Adhesives Preselection Work life vs. Handling strength Product 0 50 DP 100 3 DP 105 5 DP 110 100 150 200 minutes 20 10 20 25 180 DP 190 90 DP 270 300 70 DP 410 10 300 30 DP 460 60 300 DP 490 180 7 DP 609 300 45 10 DP 610 120 27 DP 801 8 DP 810 15 3 DP 8005 Work life Handling strenght 90 10 DP 8010 120 Sheer vs. Peel Strength on etched aluminium Viscosity vs. Worklife 40 DP 810 30 DP 105 DP 490 DP 760 DP 100 DP 460 fluid 25 DP 190 DP 270 15 DP 110 controlled flow DP 105 DP 609 DP 125 DP 190 DP 460 DP 810 DP 100 DP 410 DP 8005 DP 609 DP 8010 0 Less Fluid / Long Work life Less Fluid / Short Work life DP 110 DP 801 DP 270 DP 610 DP 801 DP 610 DP 125 20 Fluid / Long Work life Fluid / Short Work life very fluid DP 410 35 MPa 240 60 DP 760 5 20 40 thixotropic 60 80 100 120 DP 8005 0 5 DP 760 10 25 60 (minutes) Shear Tensile stress is exerted equally over the entire joint and away from the adhesive bond. Shear stress is across the adhesive bond. The bonded materials are forced to slide over each other. Cleavage stress is concentrated at one edge and exerts a prying force on the bond. Peel stress is concentrated along a thin line at the bond's edge. One surface is flexible. Most applications are subject to a combination of stresses. Cleavage DP 490 DP 8010 Work life N/cm Tensile 300 15 DP 125 10 250 Peel 90 145 180 Applications and benefits The 3MTM Scotch-WeldTM EPX structural adhesives range is widely used in product assembly where high mechanical performance is required, and also for sealing and potting in electrical / electronic applications. The EPX structural adhesives offer significant advantages - at a low investment cost: Reducing costs for combining different materials for the same or better performance; Eliminating secondary sealing or finishing operations, saving time and money; Achieving stronger and stiffer structures by improving stress distribution; Joining a wide variety of materials that are unable to be assembled by traditional methods of fastening. Bonding a golf club head to shaft. 3M Scotch-Weld DP 810 Bonding a seat cover to the ABS moulding 3M Scotch-Weld DP 190 Bonding a magnet to a steel rotor 3M Scotch-Weld DP 460 Bonding tubular joints for high impact applications 3M Scotch-Weld DP 490 Encapsulating memory chips to protect against hacking of a digital set-top box 3M Scotch-Weld DP 760 Bonding automotive interior parts (PU) to the dashboard (PP) 3M Scotch-Weld DP 8005 Operation Instructions The EPX system of controlled two-component structural adhesives enables bonding operations to be carried out quickly, with precision and in four simple steps: Slip the cartridge into the dispenser and close the dispenser's lock. Unscrew the tip of the cartridge and fix the nozzle on the cartridge. Pull the trigger for exact dispensing, the two components are mixed and applied at once. The result is a clean and precise application without the user coming into contact with the adhesive. Equipment The 3MTM Scotch-WeldTM EPX adhesive system includes: Applicators All the applicators are ergonomically designed to minimise fatigue and ensure the maximum ease of use, particularly in "hard to get at" applications. There are manual and air-powered guns for 50 ml cartridges and an air-powered gun for the 400 ml cartridges. The selection of a manual or air-powered gun and the 50 ml or 400 ml cartridge depends upon the production requirement(s) for the application. Air-powered applicator The use of a compressed air feed enables operators to apply precisely the quantity of product required without interruption. Manual applicator The manual applicator is a light, reliable tool, which requires no special maintenance; it is particularly well suited to smaller scale use at multiple work- stations. Mixing Nozzles The adhesive is extruded through a static mixing nozzle, which ensures that the two components are mixed together thoroughly every time. The mixing nozzle can be adapted to extrude different bead diameters by cutting the tip. 1 3 2 3 4 2 5 1 The EPX applicators The EPX accessoires 1 EPX manual applicator Supply form: Duo pack cartridges 1:1 and 2:1 mix ratio = 50 ml and 400 ml 10:1 mix ratio = 38 ml and 265 ml Bulk versions on request 1 2 3 4 5 6 EPX plunger for EPX manual applicator: Type 1:1/2:1 for all 50 ml cartridges Type 10:1 for 38 ml cartridge (DP 8005, DP 8010) EPX mixing nozzles for cartridges: Quadro nozzle for 50 ml cartridges (except DP 8005, DP 8010) 17 Element nozzle for DP 8005, DP 8010, 38 ml EPX mixing nozzles for large cartridges: 24 Element nozzle for all 400 ml cartridges 18 Element nozzle for DP 8005, DP 8010, 265 ml cartridge Important Notice: All declarations, technical information and recommendations in this brochure are based on tests we believe to be reliable, but we are unable to guarantee their complete accuracy. Before using our product, please make sure it is suitable for the intended use. Any question concerning the reliability of 3M adhesives is subject to the applications of the terms and conditions of sale and any applicable legislation. CJ1015 - PE-BE-SB-18 complete with plunger 1:1/2:1 - suitable for 50 ml cartridges. Note: for 38 ml 10:1 cartridges (DP 8005, DP8010), a 10:1 plunger is also required 2 EPX air-powered applicator for 1:1 and 2:1 50 ml cartridges 3 EPX air-powered applicator 8501 for 1:1 and 2:1 400 ml cartridges EPX air-powered applicator (not shown) for DP 8005, DP 8010, 265 ml cartridges 6 3M and Scotch-Weld are registered trademarks of the 3M Company.