Si 57 EG
Diffusion resistant, Epoxy-Phenolic-based Heat Cured Lining for Strong Alkalis to Weak Acidic Media. Matt, Brown Finish
SÄKAPHEN Si 57 EG is a high-quality single-component epoxy-phenolic thermosetting heat cured lining, resistant to water vapor diffusion (≤ ΔT 85°C). Si 57 EG is self-priming and formulated for direct to metal application.
Si 57 EG is chemically resistant to aqueous alkaline to weak acidic media and vapors of all types of cooling water including brackish, river and sea water.
The film lining surface is hard elastic and once polymerized, the lining is fully machinable with a formaldehyde concentration level of less than 0.1% and is also resistant to temperature fluctuations.
Fields of application: For the lining of Heat Exchangers, Condensers and Evaporators, Turbo Machinery Housings, Uninsulated Tanks, Process Tanks and Vessels, Condensate Tanks, Desalination Plant, Thermal Degasifiers and Pipelines. Suitable for items that are exposed to hot water and steam in neutral and alkaline environments. Si 57 EG is also resistant to water vapor diffusion.
For the lining of Heat Exchangers, Condensers and Evaporators, Turbo Machinery Housings, Uninsulated Tanks, Process Tanks and Vessels, Condensate Tanks, Desalination Plant, Thermal Degasifiers and Pipelines. Suitable for items that are exposed to hot water and steam in neutral and alkaline environments. Si 57 EG is also resistant to water vapor diffusion.
| Product name | Unit | SÄKAPHEN® Si 57® EG | |||
|---|---|---|---|---|---|
| Properties | - | Heat Cured Duroplast Coating | |||
| Resin base | - | Phenolic epoxy resin blend | |||
| Field of Application | - | For coating of heat exchangers, air coolers, condensers and evaporators, housings of turbo machinery, uninsulated tanks and process tanks, condensate tanks, desalination, thermal degasifiers and pipelines. Especially suitable for plant parts that are exposed to hot water and steam in slightly sour to alkaline environment. The coating is resistant to water vapour diffusion. | |||
| Cure Mechanism | - | Heat cured | |||
| Quantity of components | - | 1 | |||
| Color | - | BROWN | |||
| Surface | - | Matt | |||
| General chemical resistance (All resistances have to be inquired separately!) | - | Diffusion resistance and chemically resistant to various substances from aqueous alkaline to weak acidic media and vapours of all types of cooling waters including brackish, river and sea water. | |||
| pH Range | pH | 4 - 13 | |||
| Wet Film Thickness per layer | µm | 100 | |||
| Total dry film thickness | µm | 250 | |||
| Coverage | approx. kg/m²/DFT | 1,4 kg / m² / 250µm | |||
| Surface Preparation | Sa | SA2 ½ - SA 3 | |||
| Surface Profile | µm | 40 - 60 µm | |||
| Temperature resistance dry (dry air oven) | °C | -20°C to +180°C/200°C | |||
| Temperature resistance wet (water) | °C | -20°C to +180°C/200°C | |||
| Resistance to water vapor diffusion | °C | ≤ ∆T 85°C | |||
| Overcoating Waiting Time | hours/23°C | no limitations | |||
| Chemical Curing | days | after final bake | |||
| Linear Thermal Expansion | µm | (VDE 0304): 34*10-6 mm/mm°C | |||
| Pore testing | Volts | 67,5 | |||
| Pendulum hardness acc. to König | 6° sec | 112 | |||
| Shore D Hardness | Shore D | 94 | |||
| Adhesion Test | N/mm² [MPa] | > 20 | |||
| Salt spray test | hours | under examination | |||
| Impact Strength | mm (1 kg) | > 1000 | |||
| Surface smoothness (Ra) | µm Ø 3 readings | 1,95 | |||
| Surface tension | mN/m | n/a | |||
| Taber Abrasion resistance, CS17 wheel, 1kg | mg/1000 r. | under examination | |||
| Crosscut | class | 0 (DIN EN ISO 2409) | |||
Heat conductivity Ø 12,7x2,0mm on C-Steel with 67,37 w/mK | W/mK | 3,12 |
If non-insulated equipment that is coated reaches ∆T > 30°C, this may lead to water vapor diffusion. The SÄKAPHEN ‘EG’ range of linings allows for a high temperature resistant thin film lining to be applied, even with a temperature divergence.
