Seawater Desalination Caisson Special Coating

Product Item : HS800C
Category： Spray Polyurea Coatings
polyurea systems are resistant to seawater and saline fog, have an excellent adherence over metal and concrete and do not allow for the development or anchoring ofmicroorganisms or plants, making them the ideal interior and exterior coating of pipes, filters and deposits in desalination plants.
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1.Description:

HS800C desalination caisson special polyurea is a 100% solid content aromatic polyurea elastomer material. It has high anticorrosion and erosion resistance to seawater and with high cathodic disbonding resistance. It has been widely applied in the large-scale desalination engineering projects in America, Australia and domestic China.

2.Features:
● Without any thinner, environmental protection;
● Elongation, high flexibility, can adapt to the basic cracks and slight deformation;
● Good aging resistance
● Fast curing, can be sprayed on any surface, slope, vertical surface;
● Convenient construction, spraying a film.
3.Performance:

Item	Part A	Part B
Appearance	Pale yellow liquid	Adjustable color
Specific gravity	1.08	1.02
Viscosity（cps）@25℃	820	670
Solid content （%）	100	100
Mix ratio (Volume ratio）	1	1
Gel time（second）@25℃	4-6
Tack-Free Time（second）	15-40
Theoretical Coverage (dft)	1.05kg/㎡ Film thickness 1mm

Physical properties

Item	Test standard	Results
Hardness (Shore A)	ASTM D-2240	90
Elongation at Break（%）	ASTM D-412	460
Tensile strength（Mpa）	ASTM D-412	18
Tear strength (kN/m)	ASTM D-624	65
Impermeability (0.3Mpa/30min)	HG/T 3831-2006	Impermeable
Wear resistance (750g/500r)/mg	HG/T 3831-2006	4.4
Adhesive strength（Mpa）concrete base	HG/T 3831-2006	3.2
Adhesive strength（Mpa) steel base	HG/T 3831-2006	11.5
Density（g/cm³）	GB/T 6750-2007	1.02
Cathodic disbondment [1.5v,(65±5)℃，48h]	HG/T 3831-2006	≤15mm

Chemical resistance

Acid resistance 10%H₂SO₄ or 10%HCI,30d	No rust, no bubbles, no peel off
Alkali resistance 10% NaOH, 30d	No rust, no bubbles, no peel off
Salt resistance 30g/L,30d	No rust, no bubbles, no peel off
Salt spray resistance, 2000h	No rust, no bubbles, no peel off
Oil resistance 0# diesel, crude, 30d	No rust, no bubbles, no peel off
(For reference: the above data is acquired based on GB / T9274-1988 test standard. Pay attention to the influence of ventilation, splash and spillage.Independent immersion testing is recommended if requires other specific data)

4. Applications
Anticorrosion waterproof protection of seawater desalination tanks, offshore wharf and other marine equipment.
5.Package:
Two-component, A component 220KG / 200L barrel, B component 210KG / 200L barrel.
6.Storage/Shelf Life:
Ideal storage condition is 5-35 ℃ in cool and dry place, avoid direct sunlight. / Nine months