Volume 4 - Loctite.ph

Block Shear Test Method1. Assemblies were tested on an Instron 4204 mechanicalproperties tester, equipped with a 50 kN load cell, and a pullspeed of 0.05" per minute.2. Five replicates of each assembly were tested.TWO-PART STATIC MIX ADHESIVES(Loctite ® E-20HP Hysol ® Epoxy Adhesive, Loctite ® E-00CL Hysol ®Epoxy Adhesive, Loctite ® E-90FL Hysol ® Epoxy Adhesive, Loctite ®E-30CL Hysol ® Epoxy Adhesive, Loctite ® U-05FL Hysol ® UrethaneAdhesive, Loctite ® H4500 Speedbonder Structural Adhesive,Loctite ® H3000 Speedbonder Structural Adhesive,Loctite ® 3030 Adhesive, Polyolefin Bonder,Loctite ® Fixmaster ® High Performance Epoxy,Loctite ® Fixmaster ® Rapid Rubber Repair)1. The adhesive was dispensed onto the end of one block shearthrough an appropriate static mixing nozzle to achievethorough mixing of the two adhesive components.2. A second block shear was mated to the first withan overlap area of 0.5 in. 2 .3. The mated assembly was clamped with two clamps thatexerted a clamping force of approximately 20 lb.4. The bonded assembly was allowed to cure for one week atambient conditions before conditioning and testing.ONE-PART HEAT CURE EPOXY ADHESIVE(Loctite ® H-214HP Hysol ® Epoxy Adhesive)1. Adhesive was applied in an even filmto the end of one block shear.2. A second block shear was mated to the first withan overlap area of 0.5 in. 2 .3. The mated assembly was clamped with two clamps thatexerted a clamping force of approximately 20 lb.4. The clamped assembly was heated at350°F (177°C) for 1 hour.5. The assembly was left at ambient conditions for one weekprior to conditioning and testing.MOISTURE CURE PRODUCTS(Loctite ® 5900 ® Flange Sealant and Loctite ® 3631 Hysol ®Hot Melt Adhesive)1. Adhesive was applied in an even film to the end of one block shear.2. A short length of 10 mil thick wire was embedded in thesealant to induce a 10 mil gap between the bonded block shears(except for Loctite ® 3631 Hysol ® Hot Melt Adhesive).3. A second block shear was mated to the first withan overlap area of 0.5 in. 2 .4. The mated assembly was clamped with two clamps thatexerted a clamping force of approximately 20 lb.5. The mated assembly was allowed to moisture cure for oneweek prior to conditioning and testing.HOT MELT PRODUCTS(Loctite ® 3651 , 7804 and 1942 Hysol ® Hot Melt Adhesives)1. The adhesive was heated to its dispense temperature in theappropriate hot melt dispenser.2. Adhesive was applied in an even film tothe end of one block shear.3. A second block shear was mated to the first withan overlap area of 0.5 in. 2 .4. The mated assembly was clamped with two clamps thatexerted a clamping force of approximately 20 lb.5. The assemblies were left at ambient conditionsfor one week prior to conditioning and testing.The Loctite ® Design Guide for Bonding Plastics, Volume 4 87