Knowde Enhanced TDS
Identification & Functionality
- Chemical Family
- Product Type
- Technologies
Features & Benefits
- Ready-to-Use Product Features
Applications & Uses
- Applications
- Application Method
- Compatible Substrates & Surfaces
- Typical Use
ACA 30-100 is designed to bond metal to elastoplastic rubber such as Santoprene™ that contain olefin structures, oils extenders and fillers. The bond is good over a range of different Santoprene™ formulations and should be good for similar competitive rubbers.
- Coating Method
This waterborne adhesive may be applied to metal foil by gravure, wire wound bar, or nip fed reverse roll coater. Spray or brush may also be used for small applications. Drying at a temperature of 350°F for a short period yields a heat sealable coating. It can be activated at 250°F to 300°F with contact pressure to yield a substrate tearing bond. No primer coating or substrate cleaning is required for most applications. Peel adhesion is non-zippy from -20°F and up.
To mold bond the elastoplastic rubber to metal pre-coat the metal part with ACA 30-100. Dry the water from the adhesive, and inject the molten polymer into the mold containing the adhesive coated metal part. A very strong bond will result using this technique. Drying the adhesive to remove all volatile adhesive components is essential to avoid out-gassing at the bond line.
ACA 30-100 may be applied by gravure, wire wound, spray or brush. The water in the system must be evaporated prior to activation. This may be accomplished by use of a forced air oven set at 200° F for 10 minutes. The optimum dry film thickness must be determined by experimentation. A dry film thickness of 0.001” is a good starting point. It is only necessary to attain an interface temperature of about 250° F for bonding. Applications include combining coated aluminum to cold Santoprene™ in a hot mold, or combining hot extruded, or injection molded Santoprene™ onto a cold coated substrate. Some cool-down contact pressure may be required on the non-thermoset adhesive. A good bond is indicated by a peeled sample having a metallic black color, which indicates the tearing of the Santoprene™.
ACA 30-100 may be diluted with water as required by the application method. Stir before using.
- Clean Up
Wash the equipment with water to remove the wet adhesive. The dry coating may require a toluene wash. Toluene is a flammable solvent and must be used according to OSHA safety standards. Totally cured adhesive is difficult to clean and should be avoided if possible.
Properties
- Typical Properties
| Value | Units | Test Method / Conditions | |
| VOC per Gallon | 0.26 | % | — |
| Solids by Volume | 36.94 | % | — |
| Solids by Weight | 40.49 | % | — |
| VOC by Volume | 3.61 | % | — |
| VOC by Weight | 56.52 | % | — |
| Water by Volume | 59.45 | % | — |
| Water by Weight | 56.52 | % | — |
| pH | 8 - 9 | — | — |
| VOC per Gallon Less Water | 0.65 | lb | — |
| Viscosity | 13000.0 | cps | — |
| Weight per Gallon | 8.77 | lbs. | — |
Technical Details & Test Data
- Immersion Resistance
The adhesive bond is resistant to immersion in water solutions of calcium chloride, sodium chloride detergent (Tide), ethylene glycol and windshield fluids. It is also resistant to hydraulic fluids, motor oil (SAE 10-40) and grease. However, some crosslinking can enhance fluid and heat resistance if needed. Peeling at -20°F yields a smooth, non-zippy bond.
- Peel Adhesion
Metal Plastic Adhesive Thickness (mils) Average Peel (pli) Peak Peel (pli) 8 mil Aluminum GM Test Bar 0.2 23 23 8 mil Aluminum Santoprene™ 103-50 0.2 25 27 8 mil Aluminum Santoprene™103-73 0.3 23 26 8 mil Aluminum Santoprene™ 103-80 0.3 17 21 8 mil Aluminum Santoprene™ 103-80 0.5 25 27 8 mil Aluminum Santoprene™ 103-87 0.3 12 14 8 mil Aluminum Santoprene™ 103-87 0.5 19 22 8 mil Aluminum Santoprene™ 103-40 0.3 13 16 8 mil Aluminum ABS 0.3 14 17 8 mil Aluminum Neoprene 0.5 31 49 8 mil Aluminum EPDM 0.5 21 35 8 mil Aluminum NR Foam 0.5 Foam tear 8 mil Aluminum EPDM Foam 0.5 Foam tear