3 TM Scotch-Weld Urethane Adhesive DP605 NS Off-White DP640 Brown Technical Data May, 2010 Product Description 3M Scotch-Weld Urethane Adhesives DP605 NS Off-White and DP640 Brown are two-part, non-sag urethane adhesives. They feature tough, flexible bonds with good adhesion to a wide variety of substrates, especially wood and many properly abraded and cleaned plastics. Good adhesion can also be obtained on etched aluminum as well as primed aluminum, steel and glass. For maximum bond durability under moisture conditions, priming of glass and metal substrates is required. Available in bulk containers as 3M Scotch-Weld Urethane Adhesive 605 NS Off-White B/A or 3M Scotch-Weld Urethane Adhesive 3549 B/A. Features Tough, flexible bonds 5 or 40 minute worklife Non-Sag/Thixotropic Bonds wood and many plastics 1:1 Mix Ratio Low halogen content (3M Scotch-Weld Urethane Adhesive DP605 NS) Note: The following technical information and data should be considered representative Typical Uncured or typical only and should not be used for specification purposes. Physical Properties Scotch-Weld Scotch-Weld Urethane Adhesive Urethane Adhesive Product DP605 NS Off-White DP640 Brown Color Off-White Brown Base Resin Polyol/Isocyanate Polyol/Isocyanate Mix Ratio (B:A) Volume 1:1 1:1 Weight 1:1.08 1:1.09 Net Weight Base 8.8-9.2 10.1-10.5 Lbs./Gal. Accelerator 9.7-10.2 11.1-11.5 1a Viscosity Base 11-20 (Approx.) time to deliver Accelerator 11-20 20 gms 20 psi thru a .104 orifice 75F (24C) seconds. 1b Viscosity Brookfield RVF 10 rpm Base ( 6 Spindle) 10,000-40,000 cps 75F (24C) Accelerator ( 5 Spindle) 15,000-55,000 1a. Viscosity determined using 3M test method C-1019. Procedure involves pressure flowmeter, .104 orifice sample cup, pressure of 20 psi and temperature of 75F 2F (24C -16C). 1b. Viscosity determined using C-1D. Procedure involves using a RVF Brookfield viscometer with either a 6 or 5 spindle at 10 rpm. - 1 - 3M Scotch-Weld Urethane Adhesive DP605 NS Off-White DP640 Brown Note: The following technical information and data should be considered representative Typical Cured or typical only and should not be used for specification purposes. Thermal Properties Product 3M Scotch-Weld 3M Scotch-Weld Urethane Adhesive Urethane Adhesive DP605 NS Off-White DP640 Brown Physical: Color Off-White Brown Shore A Hardness 75-85 70-80 (ASTM D 2240) 2 Time to Handling Strength 15-20 min. 23C (73F) 6-8 hrs. 23C (73F) 3 Cure Time 48 hours 23C (73F) 7 days 23C (73F) 4 Elongation 100% 100% Scotch-Weld Scotch-Weld Urethane Adhesive Urethane Adhesive Electrical: DP605 NS Off-White DP640 Brown Dielectric Constant 3.1 1 KHz 23C 5.9 1 KHz 23C (ASTM D 150) Dissipation Factor .021 1 KHz 23C .12 1 KHz 23C (ASTM D 150) Dielectric Strength 640 volts/mil 470 volts/mil (ASTM D 149) 14 12 Volume Resistivity 1.0 x 10 ohm-cm 2.6 x 10 ohm-cm (ASTM D 257) Scotch-Weld Scotch-Weld Urethane Adhesive Urethane Adhesive Thermal: DP605 NS Off-White DP640 Brown 5 Wt. loss by Thermal 5% 300C Gravimetric Analysis 6 -6 Coefficient of Thermal 121 x 10 below 41C -6 Expansion (in./in./C) 219 x 10 above 41C 7 Thermal Conductivity 0.101 45C (btu-ft./sq. ft.-hr. F) 8 Glass Transition Temp 41C 2. Handling strength determined per 3M test method C-3179. Time to handling strength taken to be that time required to achieve 50 psi OLS strength using aluminum substrates. 3. The cure time is defined as that time required for the adhesive to achieve a minimum of 80% of the ultimate strength as measured by aluminum - aluminum OLS. 4. Elongation is determined using 3M test method C-3094/ASTM D 882. 5. Weight loss by TGA reported as that temperature at which 5% weight loss occurs by TGA in air at 5C rise per minute per ASTM 1131-86. 6. TCE determined with TMA Analyzer using a heating rate of 50F (10C) per minute. Second heat values given. 7. Thermal conductivity determined using ASTM C177 and C-matic Instrument with 2 diameter samples. 8. Glass transition temperature (Tg) determined using DSC Analyzer with a heating rate of 68F (20C) per minute. Second heat values given. - 2 -