BW3-900 Spray Polyurea Coating for Waterproofing & Anticorrosion

Q: What chemical resistance data is listed for BW3-900?

The BW3-900 data sheet lists Acid resistance 10%H2SO4 or 10%HCl for 30 days, Alkali resistance 10%NaOH for 30 days, Salt resistance 30 g/L for 30 days plus salt spray resistance 2000 h and oil resistance, with no rust, no bubbles and no peeling in the listed results.

Q: What should buyers confirm before ordering BW3-900?

Buyers should confirm substrate type, film thickness, chemical exposure, waterproofing requirements, packaging quantity and the latest TDS before ordering BW3-900 for a bulk project.

Product description

BW3-900 spray pure polyurea elastomer anticorrosion waterproof protective coating

Use it when the project needs spray-applied waterproofing, anticorrosion or protective lining performance. Confirm substrate preparation, spray equipment, A / B component ratio, film thickness and recoat window before ordering. Key data to review: 100%, 4-6 s, 22 MPa.

BW3-900 Spray Polyurea Coating official product packaging image

What BW3-900 delivers

Bw900 is a 100% solids aromatic pure polyurea elastomer, endowed with outstanding waterproof, anticorrosion and wear-resistant performance.

Rapid cureSolvent-free, 100% solids, safe, environmentally friendly and odor-free.
Dense protective filmRapid curing; can be sprayed on curved, sloped and vertical surfaces without sagging.
Adhesion performanceDense coating, seamless, with good flexibility.
Durable serviceHigh adhesive strength, bonding quickly and firmly to steel, concrete, wood, glass fibers and other substrates.

Technical advantages for project protection.

Documented product advantages include 100% solids composition, rapid curing, impact and Abrasion resistance, chemical resistance and waterproofing performance. Final suitability should be verified against the target substrate, environment and service condition.

100%Solid content reference from the product information table for coating build and purchasing review.

4-6 sOpen time, dry time or pot-life reference for planning application sequence and recoat work.

22 MPaTensile strength reference for flexible protection and mechanical service review.

3.2 MPaAdhesion reference for prepared substrate and coating-system compatibility review.

Application scope

Typical use areas for BW3-900.

Anticorrosion and waterproof protection of construction, chemicals, transportation, metallurgy, electric power, aerospace, marine, shipbuilding and other fields.

Product features

Solvent-freeSolvent-free, 100% solids, safe, environmentally friendly and odor-free.
Rapid curing; can be sprayed on curvedRapid curing; can be sprayed on curved, sloped and vertical surfaces without sagging.
Dense coatingDense coating, seamless, with good flexibility.
High adhesive strengthHigh adhesive strength, bonding quickly and firmly to steel, concrete, wood, glass fibers and other substrates.

Project fit

Anticorrosion and waterproof protection of construction, chemicals, transportation, metallurgy, electric power, aerospace, marine, shipbuilding and other fields.

Substrate reviewConfirm surface preparation, primer compatibility and moisture condition before application.
Service condition reviewMatch film thickness, chemical exposure and mechanical demand to the project specification.

Product information & technical data

Technical data for BW3-900 spray pure polyurea elastomer anticorrosion waterproof protective coating.

Review product information, physical properties and chemical resistance data for BW3-900 spray pure polyurea elastomer anticorrosion waterproof protective coating in a cleaner table structure optimized for technical comparison and procurement review.

Product information

Item	Part A	Part B
Appearance	Pale yellow liquid	Adjustable color
Specific gravity (g/cm³)	1.12	1.05
Viscosity (cps)@ 25°C	800	650
Solid content (%)	100	100
Mix ratio (by volume)	1	1
Gel time (s)@ 25°C	4-6
Theoretical coverage (DFT)	1.08 kg/m² film thickness 1 mm

Physical properties

Item	Test standard	Result
Hardness (Shore A)	GB / T 23446-2009	92
Elongation rate (%)	GB / T 23446-2009	482
Tensile strength (MPa)	GB / T 23446-2009	22
Tear strength (kN/m)	GB / T 23446-2009	85
Impermeability (0.4 MPa / 2 h)	GB / T 23446-2009	Impermeable
Wear resistance(750 g / 500 r) / mg	HG / T 3831-2006	4.2
Adhesive strength (MPa)concrete base	GB / T 23446-2009	3.2
Adhesive strength (MPa) steel base	GB / T 23446-2009	11.3
Density(g/cm³)	GB / T 6750-2007	1.02
Cathodic disbondment [1.5v,(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

Exposure item	Result
Acid resistance 10%H₂SO₄ or 10%HCl, 30 d	No rust, no bubbles, no peeling
Alkali resistance 10%NaOH, 30 d	No rust, no bubbles, no peeling
Salt resistance 30 g/L, 30 d	No rust, no bubbles, no peeling
Salt spray resistance 2000 h	No rust, no bubbles, no peeling
Oil resistance 0# diesel, crude oil, 30 d	No rust, no bubbles, no peeling

Application environment & guide

Spray application conditions, equipment and recoat guidance.

Check temperature, Humidity, equipment setup, film thickness and recoating interval before installation.

Application environment

Condition	Requirement
Environment temperature	0°C-45°C
Product pre-heat temperature	65°C-70°C
Pipe pre-heat temperature	55°C-65°C
Relative Humidity	≤90%
Dew point	≥3°C

Application guide

Guide item	Recommendation
Recommended spray machine	GRACO H-XP3 Polyurea spray equipment
Spray gun	Fusion-air purge or mechanical purge
Static pressure	2300-2500 psi
Dynamic pressure	2000-2200 psi
Recommended film thickness	1000-3000 μm
Recoating interval	≤6 h

Application note

Agitate Part B evenly prior to application, thoroughly mix the deposited pigments, or the product’s quality will be affected.
Spray polyurea within the proper time if the su bstrate surface is primed. For the application method and interval time of Bw polyurea special primer please refer to Colorful Whale Advanced Materials (Shanghai) Co., Ltd.’s other brochure.
Always apply Bw900 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 Bw spray polyurea series.

Curing time, shelf life and packing

Curing time, storage and packing information for project planning.

Use the curing profile, shelf-life data and packing details below to plan spray polyurea application timing, warehouse handling and bulk project purchasing.

Product curing time

Note: the curing time varies with the environmental conditions especially the temperature and relative Humidity.

Substrate temperature	Dry	Foot traffic / Solid dry
+10°C	30 s	45 min / 7 d
+20°C	23 s	15 min / 6 d
+30°C	17 s	5 min / 5 d

Shelf life & packing

Item	Details
Shelf life from manufacturing date	Part A: 10 months · Part B: 10 months
Storage temperature	+5-35°C
Package requirement	Keep the product package tightly sealed
Storage precaution	Store in a cool, ventilated place and avoid direct sunlight

Health & safety / integrity declaration

Safety data, handling guidance and application verification.

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 Material Safety Data Sheet containing physical, ecological, toxicological and other safety-related data.

Integrity declaration

Colorful Whale Advanced Materials (Shanghai) Co., Ltd. guarantees all technical data stated in this sheet are based on laboratory tests. Actual testing methods may vary due to different circumstances. Therefore please test and verify its applicability. Colorful Whale Advanced Materials (Shanghai) Co., Ltd. assumes no responsibility except for product quality and reserves the right of any modifications on the listed data without prior notice.

FAQ

FAQ about BW3-900 spray pure polyurea elastomer anticorrosion waterproof protective coating.

These answers support engineering review, contractor planning and bulk project purchasing before ordering.

What is BW3-900 spray pure polyurea coating used for?

BW3-900 is a spray pure polyurea protective coating for industrial waterproofing, anticorrosion lining and substrate protection on properly prepared steel, concrete, wood and glass-fiber surfaces.

Why is BW3-900 suitable for waterproofing and anticorrosion projects?

BW3-900 is a seamless 100% solids spray-applied elastomer with impermeability data, 22 MPa Tensile strength and 482% elongation for flexible protection.

What chemical resistance data is listed for BW3-900?

The BW3-900 data sheet lists Acid resistance 10%H₂SO₄ or 10%HCl, 30 d, Alkali resistance 10%NaOH, 30 d, Salt resistance 30 g/L, 30 d plus salt spray resistance 2000 h and oil resistance, with no rust, no bubbles and no peeling in the listed results.

What spray equipment and pressure are recommended for BW3-900?

BW3-900 is designed for GRACO H-XP3 Polyurea spray equipment, using a Fusion air-purge or mechanical-purge spray gun, static pressure around 2300-2500 psi and dynamic pressure around 2000-2200 psi.

What application temperature is recommended for BW3-900?

The application guide lists product pre-heat temperature 65°C-70°C and pipe pre-heat temperature 55°C-65°C, with site temperature and Humidity controlled before spraying.

What should buyers confirm before ordering BW3-900?

Buyers should confirm substrate type, film thickness , chemical exposure, waterproofing requirements, packaging quantity and the latest TDS before ordering BW3-900 for a bulk project.

Request technical documents

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Request TDS, application guidance or bulk project support.

If you are evaluating BW3-900 for waterproofing, anticorrosion or protective coating work, request the latest technical data sheet, application guidance and project-specific compatibility review before ordering.