Sika® Permacor®-3326 EG H
Sika® Permacor®-3326 EG H is a low solvent containing 2-pack epoxy coating for steel and concrete. The coating has high physical strength, with good abrasion and impact resistance. Crack bridging capability up to 3 mm (laminate system).
- High chemical resistance to water, aggressive effluents and waste water and a wide range of chemicals, particularly salt solutions and to acids occurring in biological processes
- High diffusion resistance
- Very good adhesion to steel and mineral surfaces
- Reliable application due to the ability to check for pores in the coating
Usage
Sika® Permacor®-3326 EG H is ideally suited for the corrosion protection of steel and concrete surfaces exposed to various media. The principal use of Sika® Permacor®-3326 EG H is the internal lining of sludge digesters, composting vessels, and process water-, waste water-, and chemical storage tanks, as well as cooling water pipelines and biogas plants. Sika® Permacor®-3326 EG H is also suitable as a robust anti-corrosive coating for use in industrial environments, e.g. for pipe bridges, bottling plants, and as an external coating for tanks and pipes, machinery and other pieces of apparatus.Advantages
- High chemical resistance to water, aggressive effluents and waste water and a wide range of chemicals, particularly salt solutions and to acids occurring in biological processes
- High diffusion resistance
- Very good adhesion to steel and mineral surfaces
- Reliable application due to the ability to check for pores in the coating
Packaging
| Sika® Permacor®-3326 EG H | 16 kg net. |
| Sika® Thinner E+B | 25 l |
| SikaCor® Cleaner | 25 l |
Colour
Pebble grey approx. RAL 7032 and green approx. DB 601
Product Details
Shelf Life
2 years
Storage Conditions
In originally sealed containers in a cool and dry environment.
Density
~1.9 kg/l
Solid Content
~75 % by volume
~88 % by weight
Chemical Resistance
Upon request
Thermal Resistance
Dry heat up to approx. + 100 °C
Application
Mixing Ratio
Components A : B |
| By weight | 100 : 23 |
| By volume | 100 : 26 |
Thinner
Sika® Thinner E+B
If necessary max. 5 % Sika® Thinner E+B may be added to adapt the viscosity.
Product Temperature
Min. + 10 °C
Relative Air Humidity
Max. 85 %
Max. 80 % in containers, except the surface temperature is significantly higher than the dew point temperature, it shall be at least 3 K above dew point.
Surface Temperature
Min. + 10 °C
Substrate Moisture Content
Max. 4 % (CM-measuring)
Pot Life
| At + 20 °C | ~90 min |
| At + 30 °C | ~45 min |
Waiting Time / Overcoating
Waiting time at + 20 °C
Min. 12 h
Coating used as lining:
Max. 48 h at + 20 °C
In case of longer waiting times the surface must be activated by sweep blasting.
Overcoating
With itself.
For exposure to corrosive atmospheric conditions, also:
With Sika® Permacor®-2230 VHS or Sika® Permacor®-2330.
For other products please refer to Sika.
Drying time
Drying time at + 20 °C
| Touch dry | after ~4 h |
| Walkable | after ~12 h |
Final drying time
Full mechanical and chemical resistance after 7 days at + 20 °C.
Porosity Test
With a suitable high-voltage tester, e.g. Fischer-POROSCOPE® with flat electrode (rubber tongue). Test voltage 5 Volt per 1 μm coating thickness.
Consumption
Theoretical material-consumption/coverage without loss for medium dry film thickness of:
| Dry film thickness | 250 µm |
Wet film thickness | 330 µm |
| Consumption | 0.633 kg/m2 |
| Consumption | 1.58 m2/kg |
SUBSTRATE PREPARATION
Concrete:
The surface areas to be coated must meet recognised building standards, i.e. be solid, load-bearing and free from contaminants detrimental to adhesion. Pull-off adhesion strength in accordance with DIN 1048 should be > 1.5 N/mm2 on average with the lowest reading no less than 1.0 N/mm2. For areas subject to heavy mechanical loading, the average value should be > 2.0 N/mm2 and the lowest reading no less than 1.5 N/mm2. Apply suitable compatible undercoats and observe recommended overcoating intervals.
SURFACE PREPARATION
Steel: Remove all weld spatter, then grind welds and joints in accordance with EN 14879-1.Blast-cleaning to Sa 2 ½ according to ISO 12944-4.Free from dirt, oil and grease.Average roughness depth RZ ≥ 50 μm.
MIXING
Stir component A and B very thoroughly using an electric mixer (start slowly, then increase up to approx. 300 rpm). Add stirred component B carefully and mix both components very thoroughly (including sides and bottom of the container). Mix for at least 3 minutes until a homogeneous mixture is achieved. Fill mixed material into clean container and mix again shortly as described above. During mixing and handling of the materials always wear protective goggles, suitable gloves and other protective clothings.
APPLICATION
The method of application has a major effect on achieving uniform thickness and appearance. Spray application will give the best results. The indicated dry film thickness is easily achieved by airless spray. Adding solvents reduces the sag resistance and the dry film thickness. In case of application by roller or brush, additional applications may become necessary to achieve the required coating thickness, depending on type of construction, site conditions, colour shade etc. Prior to major coating operations a test application on site may be useful to ensure the selected application method will provide the requested results.
By brush or roller:
- Dry film thickness of approx. 150 μm per layer is achievable
- Possibly an additional layer may become necessary to achieve the total dry film thickness
Airless-spraying:
- Efficient airless equipment
- Pressure min. 180 bar
- Remove sieves
- Nozzle size ≥ 0.38 mm (≥ 0.015 inch)
- Spraying angle approx. 50 °
- Diameter of hoses min. 8 mm (⅜ inch)
- Temperature of material min. + 15 °C
CLEANING OF TOOLS
SikaCor® Cleaner