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High-Strength Spray Polyurea for Special Vehicle Protection

BW3-319

High-strength spray polyurea coating for special vehicle surfaces, chassis protection, body reinforcement, impact resistance and abrasion-resistant metal protection.

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Black textured spray polyurea coating inside a vehicle cargo bed

Product Description

BW3-319 is a 100% solids high-strength spray polyurea coating designed for prepared vehicle and equipment surfaces. Its dense elastomeric film combines the listed tensile, tear, abrasion and adhesion properties with impact absorption, rebound resilience, vibration-damping and noise-reduction support. Final suitability, primer selection, surface preparation, film thickness and performance requirements must be confirmed against the latest approved TDS and project-specific testing.

BW3-319 Part A and Part B product drums

Application Scope

BW3-319 is used for high-speed EMU axle-frame chassis, special-purpose vehicles, passenger vehicles, off-road vehicles, large passenger-bus chassis, truck beds, equipment housings, body reinforcement, shock absorption and noise reduction.

  • Special-Purpose Vehicles and EquipmentProtective coating review for special-purpose vehicles, truck beds, equipment housings and prepared metal surfaces.
  • Vehicle Chassis and Cargo AreasReview for sedans, off-road vehicles, large passenger-bus chassis and vehicle cargo surfaces exposed to wear or impact.
  • High-Speed EMU ComponentsListed for high-speed EMU axle-frame chassis and other prepared metal components requiring project-specific confirmation.
  • Body Reinforcement, Damping and Noise ReductionSupports review where the coating route needs body reinforcement, vibration damping and noise reduction performance.

Designed for High-Strength Vehicle Surface Reinforcement Review

BW3-319 forms a tough, dense spray-applied layer over properly prepared vehicle substrates. It is intended for projects that require high-strength surface protection, firm steel adhesion, abrasion resistance, impact-performance review and damping support, subject to the approved TDS and project-specific testing.

34 MPaTensile StrengthProvides mechanical strength for special vehicle, chassis and body-surface reinforcement review.
95 kN/mTear StrengthSupports toughness review where the protective layer may face tearing, impact or demanding vehicle-service stress.
4.3 mgWear ResistanceSupports abrasion-resistance review for vehicle surfaces under the stated 750 g / 500 r test condition.
11.3 MPaSteel AdhesionHelps review bonding performance between the coating and properly prepared steel vehicle substrates.

Product Features and Advantages

BW3-319 focuses on high-strength vehicle protection, helping form a tough, dense and strongly bonded spray-applied layer for impact resistance, abrasion resistance, damping support and metal surface reinforcement.

Film Formation and Vehicle Application

  • Solvent-Free 100% SolidsBuilds film without solvent evaporation, helping support a dense coating layer on prepared vehicle surfaces.
  • Fast Spray BuildSupports spray formation on curved, sloped and vertical vehicle surfaces without sagging under suitable conditions.
  • Tough Dense Seamless LayerForms a seamless, tough and dense protective coating layer over compatible prepared substrates.
  • Vehicle-Body AdhesionBonds firmly with prepared steel vehicle bodies or metal substrates as part of the coating route.
  • Damping and Noise-Reduction SupportSupports project review where vibration damping, rebound resilience and noise reduction are part of the requirement.

Protection Performance

  • Impact, Collision and Abrasion ResistanceSupports review for impact, collision and wear-resistant protection on prepared vehicle surfaces.
  • Project-Specific Impact ReviewImpact-related requirements must be defined by the project specification and confirmed through the applicable test method and acceptance criteria.
  • Chemical Resistance ReviewSupports anticorrosion review for acids, alkali, salts, oils and other listed media under stated test conditions.
  • Waterproof PerformanceForms a continuous protective layer for compatible prepared vehicle substrates and structures.
  • Service-Life SupportCan help extend vehicle-surface service life when properly specified, tested, installed and maintained.

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

Product data table
ItemPart APart B
AppearancePale yellow liquidAdjustable color
Specific gravity (g/cm³)1.121.05
Viscosity (cps) @ 25°C700500
Solids 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

Product data table
ItemTest standardResult
Hardness (Shore D)GB/T 23446-200956
Elongation rate (%)GB/T 23446-2009340
Tensile strength (MPa)GB/T 23446-200934
Tear strength (kN/m)GB/T 23446-200995
Impermeability (0.4 MPa / 2 h)GB/T 23446-2009Impermeable
Wear resistance (750 g / 500 r) / mgGB/T 23446-20094.3
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 test standard. Pay attention to the influence of ventilation, splash and spillage. Independent immersion testing is recommended if other specific data is required

Product data table
Exposure itemResult
Acid resistance 50% H2SO4 or 15% HCl, 30 dNo corrosion, no blistering, no peeling
Alkali resistance 50% NaOH, 30 dNo corrosion, no blistering, no peeling
Salt resistance 50 g/L, 30 dNo corrosion, no blistering, no peeling
Salt spray resistance 2000 hNo corrosion, no blistering, no peeling
Oil resistance No. 0 diesel fuel, 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

Product data table
ConditionRequirement
Ambient temperature0°C-45°C
Relative humidity≤90%
Dew-point marginSubstrate temperature must be at least 3°C above the dew point.
Metal surface preparationSandblast and remove rust to Sa2.5 according to ISO 8501-1 or GB 8923 where applicable
Other substratesConsult BW Polyurea technical personnel for other substrate treatments

Application Guide

Product data table
Guide itemRecommendation
Application equipmentProfessional polyurea spraying equipment
Spray gunAir or mechanical self-cleaning special polyurea spray gun
Static pressure2300-2500 psi
Dynamic pressure2000-2200 psi
Product spraying heating temperature65°C-70°C
Pipeline heating temperature55°C-65°C
Recommended dry film thickness1000-3000 μm
Recoating interval≤6 h

Application Note

  • For metal surfaces, abrasive cleaning for rust removal is recommended, reaching Sa2.5 according to ISO 8501-1 or GB 8923.
  • For other substrate materials, consult Colorful Whale Advanced Materials (Shanghai) Co., Ltd. technical personnel before application.
  • Agitate Part B uniformly before application and thoroughly mix deposited pigments, otherwise product quality may be affected.
  • Spray polyurea within the proper interval if the substrate surface is primed. For BW polyurea primer application and recoat interval, refer to the related Colorful Whale Advanced Materials (Shanghai) Co., Ltd. brochure.
  • Always apply BW3-319 on a small area before larger 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.

Product data table
Substrate temperatureDryFoot trafficThrough-dry
+10°C30 s45 min7 d
+20°C23 s15 min6 d
+30°C17 s5 min5 d

Shelf Life & Packing

Product data table
ItemDetails
Shelf life from date of manufacture10 months, original package sealed
Storage temperature+5-35°C
Packing410 kg/set (Part 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.

Technical Data Notice

Values shown are typical laboratory results obtained under the referenced test conditions and are not a project warranty. Actual performance depends on substrate condition, application, film thickness, curing and service exposure. Confirm the latest approved TDS, SDS and project requirements before use.

BW3-319 Frequently Asked Questions

Review the main product, substrate, vehicle-surface protection, application and document questions before specifying or ordering BW3-319.

BW3-319 is a 100% solids high-strength spray polyurea coating for special vehicles, vehicle chassis, bus body reinforcement, vibration damping, noise reduction and prepared vehicle surfaces.

The technical sheet lists high-speed train axle-frame chassis, special-purpose vehicles, passenger vehicles, off-road vehicles, large bus chassis, truck beds, equipment housings, body reinforcement, vibration damping and noise reduction.

Confirm the required tensile, tear, abrasion, adhesion, impact, vibration-damping and film-thickness values against the latest approved TDS, substrate condition and project-specific testing before specification.

BW3-319 is positioned for special vehicle and vehicle-surface protection where listed steel adhesion, wear resistance, tensile strength, tear strength and damping-related review matter. BW3-900 is the broader aromatic spray polyurea for general waterproofing, lining and corrosion-protection systems.

Confirm metal surface preparation, surface profile, primer compatibility, moisture condition, dry film thickness and permitted recoat window before applying BW3-319.

The technical sheet lists a 1:1 volume mix ratio, 4-6 s gel time at 25°C, theoretical coverage of 1.08 kg/m² at 1 mm film thickness and 1000-3000 μm recommended dry film thickness. Confirm final film build with the latest TDS and project requirements.

Request the latest TDS, SDS, physical-property data, wear result, steel adhesion data, application guidance, primer recommendation and project-specific review before ordering BW3-319.

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