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Description for 3M 78HT Scotch-Weld Hi-Temperature Polystyrene Foam Insulation Cylinder Spray Adhesive
Industrial grade, versatile bulk spray adhesives formulated for specific substrates and market needs (soft foams – polystyrene foams).Application Type Bond 1 Part or 2 Part 1 Part Material Form Liquid, Synthetic elastomer Substrate Acrylic, Aluminum, FRP (Fiber Reinforced Plastic), Fabrics, Metal, Heavy papers, Most plastics, Polypropylene, Wood, Fiberglass, Polystyrene foams, Galvanized, Soft foams, ABS, Polystyrene foams Manufacturer 3M Chemistry Synthetic elastomer, Flammable Solvent Cure Method Solvent Color Blue, Translucent High Temperature Resistance (°C) High temperature resistance Density (g/cm³) 5.8 (lbs/gal)
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Tensile Strength Test Methods
Tensile Strength | Cure Time | Test Temperature | Test Method |
---|---|---|---|
30 (grams) | 10 min | 110°C | 4 square inch bonds tested with 30 grams hanging in tensile. Temperature is held for 10 minutes and ramped at 10°F increments, until complete failure. |
Shear Strength Test Methods
Shear Strength | Type | Substrate | Test Temperature | Test Method |
---|---|---|---|---|
87 psi | Overlap Shear Strength | ABS to ABS (2 surface adhesive bond) | 24°C | 1 square inch bonds tested at 2 inches per minute separation rate at 75°F (24°) |
160 psi | Overlap Shear Strength | ABS to ABS (1 surface adhesive bond) | 24°C | 1 square inch bonds tested at 2 inches per minute separation rate at 75°F (24°) |
169 psi | Overlap Shear Strength | Acrylic to Acrylic (2 surface adhesive bond) | 24°C | 1 square inch bonds tested at 2 inches per minute separation rate at 75°F (24°) |
78 psi | Overlap Shear Strength | Aluminum to Aluminum (2 surface adhesive bond) | 24°C | 1 square inch bonds tested at 2 inches per minute separation rate at 75°F (24°) |
144 psi | Overlap Shear Strength | Birch to Birch (2 surface adhesive bond) | 24°C | 1 square inch bonds tested at 2 inches per minute separation rate at 75°F (24°) |
176 psi | Overlap Shear Strength | Birch to Birch (1 surface adhesive bond) | 24°C | 1 square inch bonds tested at 2 inches per minute separation rate at 75°F (24°) |
29 psi | Overlap Shear Strength | Galvanized to Galvanized (2 surface adhesive bond) | 24°C | 1 square inch bonds tested at 2 inches per minute separation rate at 75°F (24°) |
76 psi | Overlap Shear Strength | Galvanized to Galvanized (1 surface adhesive bond) | 24°C | 1 square inch bonds tested at 2 inches per minute separation rate at 75°F (24°) |
89 psi | Overlap Shear Strength | Polyethylene to Polyethylene (2 surface adhesive bond) | 24°C | 1 square inch bonds tested at 2 inches per minute separation rate at 75°F (24°) |
155 psi | Overlap Shear Strength | Polypropylene to Polypropylene (2 surface adhesive bond) | 24°C | 1 square inch bonds tested at 2 inches per minute separation rate at 75°F (24°) |
82 psi | Overlap Shear Strength | FRP (Fiber Reinforced Plastic) to FRP (2 surface adhesive bond) | 24°C | 1 square inch bonds tested at 2 inches per minute separation rate at 75°F (24°) |
% Solids Test Methods
% Solids | Test Method |
---|---|
15 % | By weight |

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