Product descriptions SWD9001 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.
Anticorrosion waterproof protection of seawater desalination tanks, offshore wharf and other marine equipment. It has high chemical resistance, anticorrosion waterproof and sea water resistance, to extend the service life for over 30 years.
Item A B Appearance Pale yellow liquid Adjustable color Specific gravity (g/m³) 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 Surface dry time（second） 15-40 Theoretical Coverage (dft) 1.05kg/㎡ Film thickness 1mm
Test standard Results Hardness (Shore A) ASTM D-2240 90 Elongation rate（%） ASTM D-412 450 Tensile strength（Mpa） ASTM D-412 20 Tear strength (kN/m) ASTM D-624 72 Impermeability (0.3Mpa/30min) HG/T 3831-2006 Impermeable Wear resistance (750g/500r)/mg HG/T 3831-2006 4.5 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
Recommend spray machine GRACO H-XP3 Polyurea spray equipment Spray gun Fusion-air purge or mechanical purge Static pressure 2300-2500psi Dynamic pressure 2000-2200psi Recommend film thickness 1000-3000μm Recoating interval ≤6h
Agitate part B uniform prior to application, thoroughly mix the deposited pigments, or the product’ quality will be affected.
spray polyurea within the proper time if the substrate surface is primed. For the application method and interval time of SWD polyurea speical primer please refer to SWD companies’ other brochure.
Always apply SWD spray polyurea on a small area before large application to check the mix ratio, color and spray effect are correct. For detailed information of application please refer to the latest instruction sheet of the application instructions of SWD spray polyurea series .
Product curing time
Substrate temperature Dry Walking intensity complete solidify +10℃ 28s 45min 7d +20℃ 20s 15min 6d +30℃ 17s 5min 5d
Note: the curing time varies with the environment condition especially the temperature and relative humidity.
* From the manufacturer date and on the original package sealed condition:
Part A: 10 months
Part B: 10 months
Packing: Part A 210kg/drum, part B 200kg/drum
Make sure the product package sealed well.
* store in cool and ventilated place, avoid direct sunshine exposure.