MULTOWEAR
Ceramic Bead Filled Epoxy
Description
MULTOWEAR is a high density, micro alumina ceramic bead-filled epoxy system with urethane acrylate, for superior impact and abrasion resistance, that protects equipment against wear and damage from abrasive impacts.
Areas of application
- High Impact applications
- Pumps
- Scrubbers
- Screens
- Chutes
- Handling equipment
- Screw conveyors
Features
- Non-sagging stiff paste and extremely wear resistant
- Service temperatures to 150°C
- High compression and impact strength
Chemical Resistance
(Chemical resistance is calculated with a 7 day, room temperature cure (30 days immersion) @ 24°C)
| 1,1,1 Trichloroethane | Very good | Nitric Acid10% | Fair |
| Ammonia | Excellent | Phosphoric Acid10% | Fair |
| Benzene | Very good | Potassium Hydroxide 40% | Excellent |
| Petrol (Unleaded) | Excellent | Sodium Hydroxide 50% | Excellent |
| Hydrochloric Acid 10% | Very good | Sulphuric Acid 10% | Very good |
| Methanol | Poor | Toluene | Excellent |
| Methyl Ethyl Ketone | Poor | Trisodium Phosphate | Very Good |
| Methylene Chloride | Poor |
Technical Data
Typical Physical Properties: Cured 7 days @ 24ºC
| Colour | Grey |
| Mix Ratio (Resin to Hardener) |
Weight 19:1 |
| Mixed Viscosity | Non-sag putty |
| Work Time of 500gms minutes @ 24°C | 45 |
| Cure Time | 16 hours |
| Recoat Time | 12-20 hours |
| % Solids by Volume | 100 |
| Specific Volume | 425 cm3/kg |
| Specific Gravity | 2.35 gm/cm3 |
Directions for use
Surface Preparation
Proper surface preparation is essential to the success of any epoxy application. In all cases the surface should be clean, dry, free from oils, and rough.
- Remove all oils, dirt and grease by means of a strong oil free cleaner/degreaser.
- Roughen the surface by grit blasting (8-40 mesh grit) or grinding. A 75-125 micron profile is desired for most applications, including defined edges (do not ‘feather edge’ epoxy)
Note: For metals exposed to sea water or other salt solution, grit blast and high pressure water blast the area, then leave overnight to allow any salts in the metal to ‘sweat’ to the surface. Repeat blasting to ‘sweat out’ all soluble salts. Perform chloride contamination test to determine soluble salt content (should be no more than 40ppm) - All abrasive preparation should be followed by another cleaning to remove any remnants from that process.
- Repair surface as soon as possible to eliminate any changes or surface contaminants.
- Note: Large surface areas or equipment subjected to thermal shock, impact or constant vibration should have expanded metal tack welded to the surface. The expanded metal should be solvent wiped, grit blasted, solvent wiped again to remove oil, grease and dust. The expanded metal should be raised at least 1.6mm off the surface to ensure that MULTOWEAR will get in between and under the expanded metal.
Mixing
Ideal application temperature is 13ºC - 32ºC. Under cold conditions, heating the repair area to 38ºC - 43ºC is recommended to dry off any moisture, contamination, or solvents, as well as to assist epoxy in achieving maximum adhesion properties.
Mix Ratio – Resin to hardener: Weight 19: 1, Volume 8:1
------ It is strongly recommended that full units be mixed, as ratios are pre-measured. -------
- Add hardener to resin.
- Mix thoroughly with a putty knife or similar tool (continuously scrape material away from sides and bottom of container) until a uniform, streak free consistency is obtained.
- Place resin and hardener on a flat, disposable surface such as cardboard, plywood, or a plastic sheet). Use a trowel or wide blade tool to mix in the material as in Step 2 above.
Application
Using a putty knife, trowel or spatula, a very light coat should be applied to “wet out” the surface, allowing for 100% contact and further thickness build up. Then continue to build up a desired thickness. MULTOWEAR can be trowelled to a smooth finish with a steel trowel or spatula. This process is improved by warming the trowel with a heat gun or similar and lightly trowelling over the uncured wear system.
Cure
MULTOWEAR fully cures in 16 hours at 21°C at 12.5mm. Working time is 45 minutes.
For Bridging Large Gaps or Holes
Place fibreglass sheet, expanded metal or mechanical fasteners between repair area and MULTOWEAR prior to application.
For Maximum Physical Properties
Cure at room temperature for 2 ½ hours, then heat cure for 4 hours @ 65°C. This can be done with a hot box, heat lamps or other heat source. Never expose this system to a direct flame.
For +24°C Applications
Applying epoxy at temperatures below 24°C lengthens functional cure and pot life times. Conversely, applying above 24°C shortens functional cure and pot life.
Storage and Shelf Life
Store in dry conditions between 10°C and 40°C, away from sources of heat and naked flames. Protect from frost. When stored in original sealed containers, the minimum shelf life is five (3) years.
Packaging
MULTOWEAR is available in 5 kg kits (P/N 300842).
Resin in 5kg pail (P/N 300845) + Hardener in 250ml bottle (P/N 300857)
Ordering Information:
5 Kg Kit MULTOWEAR P/N 300842
Health & Safety Information
The product is hazardous.
A Material Safety Data Sheet is available from the MULTOTEC Technical Department upon request.