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BW3-900 Spray Pure Polyurea Elastomer Anticorrosion Waterproof Protective Coating

BW3-900

100% solids aromatic spray polyurea elastomer for seamless waterproofing, anti-corrosion protection and wear-resistant coating on prepared concrete, steel and other compatible substrates.

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Finished gray polyurea lining on the floor and walls of an industrial containment structure

Product Description

BW3-900 is a 100% solids aromatic pure polyurea elastomer, endowed with outstanding waterproof, anti-corrosion and wear-resistant performance. It has been widely applied in industrial and commercial fields for professional anti-corrosion and waterproof protection of various substrates and structures.

BW3-900 Part A and Part B product drums

Application Scope

BW3-900 is used for anticorrosion and waterproof protection in construction, chemicals, transportation, metallurgy, electric power, aerospace, marine, shipbuilding and other fields.

  • ConstructionWaterproof and protective coating for prepared concrete, roof, basement and structural substrates.
  • Chemical FacilitiesAnticorrosion and waterproof protection for areas exposed to acids, alkali, salts, oils or chemical splash.
  • TransportationProtective coating for bridges, tunnels, transport facilities and related concrete or steel structures.
  • Metallurgy and PowerIndustrial waterproofing, lining and protective coating for plants, equipment bases, trenches and containment areas.
  • Marine and ShipbuildingProtective coating for prepared marine, shipbuilding and steel structures exposed to corrosion risk.

Designed to Keep the Protective Layer Continuous

BW3-900 helps reduce weak points by forming a seamless spray-applied membrane over large areas and detailed surfaces. It is a suitable choice when the project requires fewer joints, fewer transitions and a more integrated protective layer.

100%Solids ContentCreates a dense protective film without solvent evaporation, helping reduce shrinkage and support consistent membrane build.
4-6 sGel TimeSupports fast spray build on vertical, curved and detailed surfaces, reducing sagging during application.
22 MPaTensile StrengthProvides strong mechanical resistance for areas exposed to movement, abrasion or demanding service conditions.
482%ElongationHelps the membrane flex with substrate movement and maintain protection around joints, corners and transitions.

Product Features and Advantages

BW3-900 focuses on balanced spray-applied protection, combining fast film build, elastomeric flexibility and durable surface resistance to support continuous protective layers across properly prepared project surfaces.

Film Formation and Application

  • Solvent-Free 100% SolidsSolvent free, 100% solids, safe, environmentally friendly and odor free.
  • Rapid Cure Without SaggingCan be sprayed and formed on bent, sloped and vertical surfaces without sagging.
  • Dense Seamless FlexibilityForms a dense, seamless coating with good flexibility.
  • Fast Return to ServiceFast curing helps the application site return to service quickly.
  • Durability SupportDurable protective performance can help reduce maintenance cost and extend the service life of the sprayed structure.

Protection Performance

  • High Adhesive StrengthBonds quickly to steel, concrete, wood, glass fiber and other substrates after proper preparation.
  • Impact and Abrasion ResistanceProvides impact resistance and abrasion resistance for protective coating service.
  • Chemical ResistanceProvides anticorrosion and chemical resistance to acids, alkali and salts.
  • Waterproof PerformanceSupports waterproof protection for compatible substrates and structures.
  • Shock and Temperature Variation ResistanceSupports shock absorbing performance and resistance to temperature variation.

Technical Data

These technical values are measured under controlled laboratory conditions to support product comparison, project selection and specification review. Please confirm final requirements with the latest approved TDS and project-specific conditions.

Product Information

BW3-900 product information and component data
ItemPart APart B
AppearancePale yellow liquidAdjustable color
Specific gravity (g/cm³)1.121.05
Viscosity (cps) @ 25°C800650
Solid content (%)100100
Mix ratio (by volume)11
Gel time (s) @ 25°C4-6
Theoretical coverage (DFT)1.08 kg/m² film thickness: 1 mm

Physical Properties

BW3-900 physical properties
ItemTest standardResult
Hardness (Shore A)GB/T 23446-200992
Elongation rate (%)GB/T 23446-2009482
Tensile strength (MPa)GB/T 23446-200922
Tear strength (kN/m)GB/T 23446-200985
Impermeability (0.4 MPa / 2 h)GB/T 23446-2009Impermeable
Wear resistance (750 g / 500 r) / mgHG/T 3831-20064.2
Adhesive strength (MPa), concrete baseGB/T 23446-20093.2
Adhesive strength (MPa), steel baseGB/T 23446-200911.3
Cathodic disbondment [1.5 V, (65±5)°C, 48 h]HG/T 3831-2006≤15 mm

Chemical Resistance

For reference, the above data is acquired based on GB/T 9274-1988. Pay attention to the influence of ventilation, splash and spillage. Independent immersion testing is recommended if other specific data is required.

BW3-900 chemical resistance data
Exposure itemResult
Acid resistance 10% H2SO4 or 10% HCl, 30 dNo corrosion, no blistering, no peeling
Alkali resistance 10% NaOH, 30 dNo corrosion, no blistering, no peeling
Salt resistance 30 g/L, 30 dNo corrosion, no blistering, no peeling
Salt spray resistance 2000 hNo corrosion, no blistering, no peeling
Oil resistance 0# diesel, crude oil, 30 dNo corrosion, no blistering, no peeling

Application Environment and Guide

Stable coating performance depends on the right site conditions, material temperature and spray setup. Review the application environment and guide values before installation, and confirm final parameters with the latest TDS and project requirements.

Application Environment

BW3-900 application conditions
ConditionRequirement
Environment temperature0°C-45°C
Product pre-heat temperature65°C-70°C
Pipe pre-heat temperature55°C-65°C
Relative humidity≤90%
Dew point≥3°C

Application Guide

BW3-900 equipment and film build guidance
Guide itemRecommendation
Recommend spray machineGRACO H-XP3 Polyurea spray equipment
Spray gunFusion-air purge or mechanical purge
Static pressure2300-2500 psi
Dynamic pressure2000-2200 psi
Recommend film thickness1000-3000 μm
Recoating interval≤6 h

Application Note

  • Agitate Part B uniformly before application and thoroughly mix deposited pigments, otherwise product quality may be affected.
  • Spray polyurea within the proper time if the substrate surface is primed. For the application method and interval time of BW polyurea special primer, refer to the related Colorful Whale Advanced Materials (Shanghai) Co., Ltd. brochure.
  • Always apply BW3-900 on a small area before large application to check that the mix ratio, color and spray effect are correct.

Product Curing Time, Shelf Life and Packing

Use the listed curing profile, shelf life, packing and storage requirements for application scheduling, warehouse handling and order planning.

Product Curing Time

The curing time varies with the environment condition, especially temperature and relative humidity.

BW3-900 curing time by substrate temperature
Substrate temperatureDryFoot trafficSolid dry
+10°C30 s45 min7 d
+20°C23 s15 min6 d
+30°C17 s5 min5 d

Shelf Life & Packing

BW3-900 shelf life and packing requirements
ItemDetails
Shelf life from date of manufacturePart A: 10 months · Part B: 10 months, original package sealed
Storage temperature+5-35°C
PackingPart A 210 kg/drum · Part B 200 kg/drum
Packaging requirementKeep the product package tightly sealed
Storage precautionStore in a cool, ventilated place and avoid direct sunlight

Product Health and Safety Information

Product Health and Safety Information

For information and advice on the safe handling, storage and disposal of chemical products, users shall refer to the most recent Safety Data Sheet containing physical, ecological, toxicological and other safety-related data.

Integrity Declaration

Colorful Whale Advanced Materials (Shanghai) Co., Ltd. guarantees that the technical data stated in this sheet is based on laboratory tests. Actual testing methods may vary due to different circumstances. Users should test and verify applicability. Colorful Whale Advanced Materials (Shanghai) Co., Ltd. does not take any other responsibility except product quality and reserves the right to modify the listed data without prior notice.

BW3-900 Frequently Asked Questions

Review the main product, substrate, application and document questions before specifying or ordering BW3-900.

BW3-900 is a 100% solids aromatic pure polyurea elastomer anticorrosion waterproof protective coating. The official technical sheet positions it for waterproof, anti-corrosion and wear-resistant protection.

The technical sheet lists solvent-free 100% solids content, rapid curing, dense seamless film formation, flexibility, high adhesive strength, impact and abrasion resistance, chemical resistance, waterproof performance and temperature-variation resistance.

The technical sheet describes fast bonding on steel, concrete, wood, glass fiber and other substrates. Final use still requires substrate preparation, primer confirmation and a trial application.

The official application scope covers anticorrosion and waterproof protection in construction, chemicals, transportation, metallurgy, electric power, aerospace, marine, shipbuilding and related fields.

Primer selection depends on the substrate, moisture condition and following coating layer. Confirm compatibility and the permitted recoat window before spraying.

Confirm whether an exposed, UV- and color-stable topcoat is required for the project’s weathering, appearance and maintenance conditions.

Review surface preparation, moisture and dew-point conditions, material heating, equipment pressure, mix ratio, target film thickness, recoat interval and service exposure.

Request the latest available TDS, SDS, packing information and project-specific application guidance before ordering.

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