BW3-951 Spray Polyurea Waterproof Coating for Anticorrosion

Q: What chemical resistance data is listed for BW3-951?

The BW3-951 data sheet lists acid resistance 10%H2SO4 or 10%HCl, alkali resistance 10%NaOH, salt resistance 30 g/L, salt spray and oil resistance, with no rust, no bubbles and no peeling in the listed tests.

Product description

BW3-951 spray polyurea elastomer waterproof anticorrosion 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%, 3-5 s, 20 MPa.

BW3-951 Spray Polyurea Coating official product packaging image

What BW3-951 delivers

Bw951 is a 100% solids aromatic spray polyurea elastomer with excellent insensitivity to ambient humidity and temperature during application.

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.

3-5 sGel-time reference for planning application sequence and spray work.

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

3.1 MPaConcrete adhesion reference for prepared substrate and coating-system compatibility review.

Application scope

Typical use areas for BW3-951.

Construction, chemical, automobile manufacturing, metallurgy, electric power, marine, ship, film props, speakers and other fields of anticorrosion and waterproof protection.

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

Construction, chemical, automobile manufacturing, metallurgy, electric power, marine, ship, film props, speakers and other fields of anticorrosion and waterproof protection.

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 BW3-951 spray polyurea elastomer waterproof anticorrosion protective coating.

Review product information, physical properties and chemical resistance data for BW3-951 spray polyurea elastomer waterproof anticorrosion 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)	1.13	1.04
Viscosity (cps)@ 25°C	720	570
Solid content (%)	100	100
Mixing ratio (volume ratio)	1	1
Gel time (s)@ 25°C	3-5
Theoretical coverage (DFT)	1.08 kg/m² film thickness 1 mm

Physical properties

Item	Test standard	Result
Hardness (Shore A)	GB / T 23446-2009	90
Elongation rate (%)	GB / T 23446-2009	460
Tensile strength (MPa)	GB / T 23446-2009	20
Tear strength (kN/m)	GB / T 23446-2009	80
Impermeability (0.4 MPa / 2 h)	GB / T 23446-2009	Impermeable
Wear resistance (750 g / 500 r) / mg	HG / T 3831-2006	4.8
Adhesive strength (MPa)concrete base	GB / T 23446-2009	3.1
Adhesive strength (MPa) steel base	GB / T 23446-2009	11
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	≤80%
Dew point	≥3°C

Application guide

Guide item	Recommendation
Recommended spray machine	Professional 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 substrate 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 Bw951 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	20 s	45 min / 7 d
+20°C	15 s	15 min / 6 d
+30°C	12 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 BW3-951 spray polyurea elastomer waterproof anticorrosion protective coating.

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

What is BW3-951 spray polyurea waterproof coating used for?

BW3-951 is a spray polyurea elastomer for waterproofing, anticorrosion and protective coating projects where fast cure, seamless film build and flexible protection are required.

How does BW3-951 perform in mechanical protection applications?

BW3-951 lists Shore A hardness 90, tensile strength 20 MPa and elongation 460%, supporting flexible protective lining work on prepared substrates.

What chemical resistance data is listed for BW3-951?

The BW3-951 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 tests.

What equipment is recommended for BW3-951 application?

BW3-951 should be applied with professional polyurea spray equipment, a Fusion air-purge or mechanical-purge gun, static pressure around 2300-2500 psi and dynamic pressure around 2000-2200 psi.

What site conditions should be controlled for BW3-951?

Before application, control environment temperature around 0°C-45°C, product spray heating around 65°C-70°C, pipe heating around 55°C-65°C and relative humidity ≤80%.

What information should be reviewed before selecting BW3-951?

Review the TDS, substrate-preparation method, adhesion expectations, chemical exposure, waterproofing design and required film thickness before selecting BW3-951 for a project.

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Request TDS, application guidance or bulk project support.

If you are evaluating BW3-951 for waterproofing, anticorrosion or protective coating work, request the latest technical data sheet, application guidance and project-specific compatibility review before ordering.