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Description for 3M Construction Mastic 4323
A high performance panel and construction adhesive. Resists wear, heat and dead load creep.Chemical Resistance Chemical Resistance: Fluid Resistance: Water Application Type Bond 1 Part or 2 Part 1-Part Material Form Liquid, Buttery mastic Substrate Plastic, Polystyrene, Steel, HardWoods, Concrete, FRP, PlyWood Manufacturer 3M Chemistry Isohexanes, Synthetic Rubber Cure Method Solvent Viscosity (cPs) 200,000 to 300,000 Color Gray Creep Resistance Dead load creep Density (g/cm³) 8.8 to 9.2 (weight (lbs/gal)) -
Technical Data for 3M Construction Mastic 4323
Overview
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Chemical Resistance
- Chemical Resistance : Fluid Resistance : Water Resistance - Water
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Application Type
- Adhesive - Bond
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1 Part or 2 Part
- 1-Part
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Material Form
- Liquid
- Other - Buttery mastic
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Substrate
- Concrete
- Steel
- Plastic
- Polystyrene (PS) - Polystyrene
- Wood - HardWoods, PlyWood
- Composites - FRP
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Industry
- Construction - Building Construction, Paneling
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Chemistry
- Synthetic Rubber
- Other - Isohexanes
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Application Method
- Dispenser - Lamination equipment
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Cure Method
- Solvent
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Color
- Gray
Specifications
Cure Specs
Viscosity (cPs) 200,000 to 300,000 Test Method Bond Strength
Shear Strength (psi) 66, 124, 183, 178, 291, 290, 290 Test Method Material Resistance
Creep Resistance Dead load creep Other Properties
Flash Point (°F) 1.4 Test Method % Solids (%) 66, 64 to 68 Test Method Density (g/cm³) 8.8 to 9.2 (weight (lbs/gal)) Business Information
Shelf Life Details Store product at 60-80°F (16-27°C) for maximum storage life. Higher temperatures reduce normal storage life. Lower temperatures cause increased viscosity of a temporary nature. Rotate stock on a “first in-first out” basis. When stored at the recommended temperature in the original, unopened container, this product has a shelf life of 15 months. Shelf Life Temperature (°F) 61 to 81 Shelf Life (mon) 15 Not Good For
Don't Use For Exposed, outdoor applications. -
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Best Practices for 3M Construction Mastic 4323
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Surface Preparation
For optimum bond strength, the substrates should be cleaned of loose dirt and debris.
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Application
3MTM Scotch-GripTM Construction Mastic 4323 is ready for use as received with no mixing or dilution required. The adhesive can be applied from cartridges using hand caulking guns or pneumatic caulk or pump equipment. The mastic is also available in bulk where simple spatulas or notched trowels can be used to apply product. A 1/4 inch diameter bead when applied to one surface will have a bonding range of approximately 15 minutes at 72°F (22°C) / 50% R.H. The mastic is usually applied to one of the bonding surfaces, although it may be applied to both surfaces in some applications. Green strength and the rate of strength buildup develops more rapidly in a dry, hot environment and more slowly as the humidity increases and/or the temperature drops.
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Clean-Up
Cleanup can be accomplished by removing the excess mastic with a spatula or similar tool. The remainder of the mastic can be wiped off using 3M™ Citrus Base Industrial Cleaner, 3M™ Scotch-Grip™ Solvent No. 2, mineral spirits or acetone soaked rag.* This should be done before the mastic dries. Dried mastic can be cut off with a sharp tool such as a razor blade or utility knife.
*Note: When using solvents, extinguish all ignition sources, including pilot lights, and follow the manufacturer’s precautions and directions for use.
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Viscosity Test Methods
Viscosity | Test Method | Temperature |
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200,000 to 300,000 cPs | Brookfield #7 @ 10 RPM’s @ 80°F 27°C | 27°C |
Shear Strength Test Methods
Shear Strength | Type | Cure Time | Test Temperature | Test Humidity | Test Method |
---|---|---|---|---|---|
66 psi | Overlap shear strength | 60 min | 25°C | 50 % | Rate of strength buildup testing: Rate of strength buildup test results were run on fir to fir, 1/4 in. exterior grade plywood, overlap shear bonds at 77°F (25°C) at 50% relative humidity. Bonds were tested on a tensile tester using a jaw separation speed of 2 inches per minute., Cohesive failure |
124 psi | Overlap shear strength | 120 min | 25°C | 50 % | Rate of strength buildup testing: Rate of strength buildup test results were run on fir to fir, 1/4 in. exterior grade plywood, overlap shear bonds at 77°F (25°C) at 50% relative humidity. Bonds were tested on a tensile tester using a jaw separation speed of 2 inches per minute., Cohesive failure |
183 psi | Overlap shear strength | 240 min | 25°C | 50 % | Rate of strength buildup testing: Rate of strength buildup test results were run on fir to fir, 1/4 in. exterior grade plywood, overlap shear bonds at 77°F (25°C) at 50% relative humidity. Bonds were tested on a tensile tester using a jaw separation speed of 2 inches per minute., Cohesive failure |
178 psi | Overlap shear strength | 360 min | 25°C | 50 % | Rate of strength buildup testing: Rate of strength buildup test results were run on fir to fir, 1/4 in. exterior grade plywood, overlap shear bonds at 77°F (25°C) at 50% relative humidity. Bonds were tested on a tensile tester using a jaw separation speed of 2 inches per minute., Cohesive failure |
291 psi | Overlap shear strength | 1,440 min | 25°C | 50 % | Rate of strength buildup testing: Rate of strength buildup test results were run on fir to fir, 1/4 in. exterior grade plywood, overlap shear bonds at 77°F (25°C) at 50% relative humidity. Bonds were tested on a tensile tester using a jaw separation speed of 2 inches per minute., Wood failure, Bond strength of the mastic beyond the limits of the substrate strength. |
290 psi | Overlap shear strength | 2,880 min | 25°C | 50 % | Rate of strength buildup testing: Rate of strength buildup test results were run on fir to fir, 1/4 in. exterior grade plywood, overlap shear bonds at 77°F (25°C) at 50% relative humidity. Bonds were tested on a tensile tester using a jaw separation speed of 2 inches per minute., Wood failure, Bond strength of the mastic beyond the limits of the substrate strength. |
290 psi | Overlap shear strength | 10,080 min | 25°C | 50 % | Rate of strength buildup testing: Rate of strength buildup test results were run on fir to fir, 1/4 in. exterior grade plywood, overlap shear bonds at 77°F (25°C) at 50% relative humidity. Bonds were tested on a tensile tester using a jaw separation speed of 2 inches per minute., Wood failure, Bond strength of the mastic beyond the limits of the substrate strength. |
Flash Point Test Methods
Flash Point | Test Method |
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-17.0°C | Setaflash |
% Solids Test Methods
% Solids | Test Method |
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66 % | By weight |
64 to 68 % | By weight |