BW3-9007 Fire-Retardant Tunnel Polyurea Coating

Product description

BW3-9007 traffic tunnel fire retardant polyurea anticorrosion protective coating

Use it when the project needs spray-applied fire-retardant anticorrosion and waterproof protection in transport infrastructure. Confirm tunnel service conditions, substrate preparation, spray equipment, A / B component ratio, film thickness and fire-retardant requirements before ordering.

BW3-9007 traffic tunnel fire-retardant polyurea official product packaging image

What BW3-9007 delivers

BW3-9007 combines fast-curing spray polyurea protection with fire-retardant behavior for traffic tunnels and related transport facilities.

Fire-retardant behaviorSelf-extinguishing after removal of the ignition source, with listed GB8624-2012 B2 class performance.
Dense seamless filmRapid curing; can be sprayed on curved, sloped and vertical surfaces without sagging.
Infrastructure adhesionHigh adhesive strength, bonding quickly and firmly to steel, concrete, wood, fiber glass and other substrates.
Durable serviceImpact resistance, abrasion resistance, corrosion resistance, waterproofing and temperature-variation resistance.

Technical advantages for tunnel protection.

Documented product advantages include 100% solids composition, rapid curing, fire-retardant performance, impact and abrasion resistance, chemical resistance and waterproofing performance. Final suitability should be verified against tunnel exposure, substrate condition and local specification.

B2Fire-retardant performance reference listed to GB8624-2012 for tunnel project review.

5-7 sGel-time reference for planning spray sequencing and fast return-to-service work.

12 MPaTensile strength reference for flexible fire-retardant protective lining review.

10.3 MPaSteel adhesion reference for prepared substrate and coating-system compatibility review.

Application scope

Typical use areas for BW3-9007.

Fire-retardant anticorrosion and waterproof protection of railways, roads, urban subway systems and other transportation facilities.

Product features

Solvent-free100% solids content, safe, environmentally friendly and odor-free.
Rapid curingCan be sprayed on curved, sloped and vertical surfaces without sagging.
Chemical resistanceExcellent corrosion resistance and chemical resistance to acids, alkalis and salts.
Service-life supportExcellent durability helps reduce maintenance costs and extend the life of sprayed structures.

Project fit

BW3-9007 is aimed at fire-retardant anticorrosion and waterproof protection in transportation infrastructure, especially tunnel environments where fast return to service and durable lining performance matter.

Substrate reviewConfirm surface preparation, primer compatibility and moisture condition before application.
Fire requirement reviewMatch film thickness, service exposure and fire-retardant requirement to the project specification.

Product information & technical data

Technical data for BW3-9007 traffic tunnel fire retardant polyurea anticorrosion protective coating.

Review product information, physical properties, fire-retardant performance and chemical resistance data 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	1.25
Viscosity (cps) @ 25°C	800	900
Solid content (%)	100	100
Mix ratio (by volume)	1	1
Gel time (s) @ 25°C	5-7
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	300
Tensile strength (MPa)	GB / T 23446-2009	12
Tear strength (kN/m)	GB / T 23446-2009	60
Impermeability (0.4 MPa / 2 h)	GB / T 23446-2009	Impermeable
Wear resistance (750 g / 500 r) / mg	HG / T 3831-2006	6.2
Adhesive strength (MPa)concrete base	GB / T 23446-2009	3.2
Adhesive strength (MPa) steel base	GB / T 23446-2009	10.3
Cathodic disbondment [1.5v,(65±5)°C, 48 h]	HG / T 3831-2006	≤15 mm
Fire retardant performance	GB8624-2012	B2 class

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 spray heating temperature	65°C-70°C
Hose heating 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 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 BW3-9007 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 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
Packing	Part A 210 kg / drum; Part B 200 kg / drum
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 BW3-9007 fire-retardant tunnel polyurea coating.

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

What is BW3-9007 fire-retardant polyurea used for?

BW3-9007 is a 100% solids aromatic polyurea elastomer for fire-retardant anticorrosion and waterproof protection in traffic tunnels, railways, roads and urban subway facilities.

What fire-retardant performance is listed for BW3-9007?

The BW3-9007 data sheet lists self-extinguishing behavior after removal of the ignition source and fire-retardant performance to GB8624-2012 B2 class.

What mechanical data should engineers review for BW3-9007?

Key listed data includes Shore A hardness 92, elongation 300%, tensile strength 12 MPa, tear strength 60 kN/m, concrete adhesion 3.2 MPa and steel adhesion 10.3 MPa.

What chemical resistance data is listed for BW3-9007?

The data sheet lists acid resistance 10%H2SO4 or 10%HCl, alkali resistance 10%NaOH, salt resistance 30 g/L, salt spray resistance 2000 h and oil resistance, with no rust, no bubbles and no peeling in the listed tests.

What spray equipment and pressure are recommended for BW3-9007?

BW3-9007 is designed for GRACO H-XP3 polyurea spray equipment with a Fusion air-purge or mechanical-purge spray gun, static pressure 2300-2500 psi and dynamic pressure 2000-2200 psi.

What should buyers confirm before ordering BW3-9007?

Confirm tunnel service conditions, substrate preparation, primer compatibility, target film thickness, fire-retardant requirement, chemical exposure and the latest TDS before ordering.

Request technical documents

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Request TDS, application guidance or bulk project support.

If you are evaluating BW3-9007 for tunnel fire-retardant anticorrosion or waterproof protective coating work, request the latest technical data sheet, application guidance and project-specific compatibility review before ordering.