DEFROST EG 4
- protection against ice formation on aircraft surfaces and ice removal in ground icing conditions
- applicable for aircraft with the take-off speed of at least 185 km/h at the beginning of the front pillar lifting
- does not protect the aircraft from icing in flight
- compatible with Defrost EG 88.1 type I and Defrost PG 1 type I during two-stage aircraft processing
AIL Defrost EG 4 type IV liquid is produced in the concentrated (100%) form, which is an aqueous solution of monoethylene glycol with addition of a special thickener, anticorrosive additives, surfactants and dye. The thickener gives properties, manifested in reduction of the initially high AIL viscosity registered as the shear stress increases (increasing velocity of the air flow over the surface covered by AIL), it is colored in green.
The liquid meets the requirements of SAE AMS 1428/1, approved by the International Certification Center AMIL (Canada), included in Holdover Time (HOT) Transport Canada, Holdover Time (HOT) FAA, based on its performance characteristics.
Indicator | Manufacturer’s value | Method of determination |
---|---|---|
Appearance, color and mechanical impurities | Liquid of orange color, opalescence is allowed, shade is not normalized. Mechanical impurities are not allowed. | Visual check of a sample in a cylindrical glass vessel |
Refraction index at 20°С | 1,3830 – 1,3860 | GOST 18995.2, ASTM D 1747 |
Hydrogen index (pH) at 20°С | 6,8 – 7,8 | GOST 22567.5, ASTM E70 |
Dynamic viscosity at 20⁰С, (Brookfield viscometer, spindle LV 1, speed 0.3 rev/min, measuring duration 10 minutes), mPa-s | 13 500 – 33 000 | AS 9968 |
Temperature limit of aerodynamic suitability for the 100% concentrate, °С: |
Тpap = -26 |
SAE АМS 1428, AS 5900 |
Time of protective action of solutions in laboratory conditions (minutes): high humidity (HHET) aqueous aerosol (WSET) |
over 460 over 80 |
SAE АМS 1428, AS 5901 |
The company was founded in 1996
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