BW8009 Concrete Sealing Penetration Polyurea Primer

Q: What is BW8009 used for?

BW8009 is a high-coverage, high-penetration two-component primer for concrete, marble, ceramic tile and wood substrates before polyurea coating systems.

Q: Is BW8009 a two-component primer?

Yes. BW8009 is a two-component concrete sealing penetration primer, and its Part A to Part B mix ratio is listed as 3:2 by volume.

Q: How much area can 1 kg cover at the listed reference coverage?

The product information table lists 0.09 kg/m2 at 50 micrometers film thickness, equivalent to about 11.1 m2/kg under the listed reference condition. Actual site coverage depends on concrete porosity and preparation.

Q: What recoating interval should be planned?

The application guide lists a minimum interval of 3 hours and a maximum of 168 hours. If the maximum interval is exceeded or dust is present, sand and clean the surface before application.

Q: What substrate condition is required before application?

The substrate should be sound, clean and dry. Remove oil, mold, dust and loose material; concrete surface pH should be below 10 and substrate moisture content below 10%.

Q: Why use BW8009 before a polyurea coating?

BW8009 is selected when the concrete primer layer needs efficient wet-out, high penetration into pinholes and small defects, surface sealing, and reliable adhesion for the following coating.

Product description

BW8009 two-component sealing penetration concrete special polyurea primer.

Chinese source name: Bw8009 双组份封闭渗透混凝土专用聚脲底涂料. It is used as the high-coverage primer layer in coating systems to penetrate, seal and reinforce prepared substrates before protective polyurea coatings.

BW8009 Concrete Sealing Penetration Polyurea Primer official product packaging image

What BW8009 delivers inside primer systems

Use BW8009 when concrete or mineral substrates need a two-component primer with high coverage, strong penetration, substrate sealing and reliable bonding before the next coating layer.

Two-component primer chemistryPart A and Part B are mixed at 3:2 by volume for concrete sealing and penetration work.
High penetrationExcellent wet-out helps infiltrate substrate surface pinholes and repair small defects before the coating build-up.
High coverage planningThe listed theoretical coverage converts to about 11.1 m2/kg at the 50 µm reference film thickness.
Moisture and air sealingThe primer helps seal moisture and air on the substrate surface to support the whole coating system.
Adhesion improvementThe data sheet lists 3.5 MPa dry concrete adhesion or substrate broken, helping the next coating bond to the base.
Concrete and mineral substratesTypical substrates include concrete, marble, ceramic tiles and wood after proper cleaning and preparation.
Long-term waterproofing supportThe dense primer layer supports anticorrosion, temperature variation resistance and waterproof performance in compatible systems.

High-penetration, high-coverage anchors for concrete primer selection.

Use these values to evaluate BW8009 for concrete wet-out, penetration, coverage efficiency and adhesion stability before polyurea coating systems.

3.5 MPaDry concrete adhesion. Adhesive strength is listed as 3.5 MPa or substrate broken.

-40/+180°CTemperature variation resistance. The physical test table lists 24 h temperature variation resistance as normal.

~11.1 m2/kgCoverage reference. Converted from 0.09 kg/m2 at 50 µm film thickness, one kilogram covers about 11.1 m2 under the listed reference condition.

High penetrationConcrete wet-out. The primer infiltrates pinholes and small surface defects, helping seal residual dust, moisture and air at the substrate surface.

Application scope

Typical use areas for BW8009.

BW8009 is used as a high-penetration primer coating on concrete, marble, ceramic tile and wood substrates before compatible coating systems.

Concrete and mineral substrate sealing

Concrete primer coatingFor prepared concrete surfaces where high penetration, efficient coverage, dust consolidation and surface sealing are needed before coating.
Marble and ceramic tile substratesFor compatible hard mineral substrates after cleaning, decontamination and adhesion review.
Wood substrate primer workFor wood surfaces where a compatible primer layer is required before the selected coating system.

Polyurea system preparation

Moisture and air blockingSeals the surface to reduce moisture and air influence at the substrate interface.
Next-coat compatibilityImproves the adhesive strength between the coating and the substrate when used in the correct coating system.
Quartz sand or quartz powder additionAfter A/B mixing, the sheet allows mixing with quartz sand or quartz powder for use.

Product information & technical data

Technical data for BW8009 two-component concrete polyurea primer.

Review product information, physical properties, mix ratio, reference coverage, penetration use case and substrate requirements before selecting BW8009 for concrete sealing penetration primer work.

Product information

Item	Part A	Part B
Appearance	Pale yellow liquid	Adjustable
Specific gravity (g/cm³)	1.02	1.10
Viscosity (cps) @ 25°C	220	260
Solid content (%)	>60%	>60%
Mix ratio by volume	3	2
Surface dry time	1-3 h
Theoretical coverage	0.09 kg/m2 at 50 µm film thickness

Typical physical test performance

Item	Test standard	Result
Adhesive strength on dry concrete base	ASTM D-3359	3.5 MPa or substrate broken
Impact resistance (kg·cm)	GB / T 1732	60
Wear resistance (700 g / 500 r), mg	GB / T 1732	11
Temperature variation resistance (-40 to +180°C), 24 h	GB / 9278-1988	Normal
Density (g/cm³)	GB / T 6750-2007	1.02

Application guide

Application conditions and scraping instructions.

Confirm substrate condition, surface dryness, pH, moisture content, temperature, humidity and recoating interval before applying BW8009 primer.

Application environment

Condition	Requirement
Environment temperature	5-38°C
Relative humidity	35-85%
Concrete surface pH	<10
Substrate moisture content	<10%
Dew point	≥3°C

Application instructions

Guide item	Recommendation
Recommended DFT	1000 µm
Recoating interval	Minimum 3 h, maximum 168 h
If maximum interval is exceeded	Sand with sandpaper and clean the surface before application
Coating method	Scraping
Mixing procedure	Mix Part A and Part B in the correct ratio, then mix with quartz sand or quartz powder for use

Substrate and application notes

Remove oil, mold, dust and other attached dirt, and remove loose parts so the substrate is solid and dry.
Mix paint evenly before use, pour out only the amount that can be used, and close the lid immediately.
The mixed paint must be used within 60 minutes. Do not return remaining mixed material to the original barrel.
Mix Part A and Part B in the correct ratio, then mix with quartz sand or quartz powder for use. Do not add organic solvents or other coatings.

Curing time, shelf life and packing

Curing time, storage and packing information for primer planning.

Use the curing profile and storage information below to plan recoating work, purchasing quantity and material handling.

Product curing time

Note: curing time varies with environmental conditions, especially temperature and relative humidity.

Substrate temperature	Surface dry	Foot traffic	Solid dry
+10°C	6 h	24 h	7 d
+20°C	4 h	12 h	7 d
+30°C	2 h	6 h	7 d

Shelf life & packing

Item	Details
Package	Part A: 24 kg/bucket; Part B: 16 kg/bucket
Shelf life from manufacturing date	10 months, unopened in original packaging
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 project verification.

Product health and safety information

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

Integrity declaration

All technical data in this sheet is based on laboratory tests. Actual testing methods may vary under different circumstances, so project teams should test and verify suitability before full system application.

FAQ

FAQ about BW8009 two-component concrete polyurea primer.

These answers support primer selection, substrate review and coating-system planning before ordering.

What is BW8009 used for?

BW8009 is a high-coverage, high-penetration two-component primer for concrete, marble, ceramic tile and wood substrates before polyurea coating systems.

Is BW8009 a two-component primer?

Yes. BW8009 is a two-component concrete sealing penetration primer, and its Part A to Part B mix ratio is listed as 3:2 by volume.

How much area can 1 kg cover at the listed reference coverage?

The product information table lists 0.09 kg/m2 at 50 micrometers film thickness, equivalent to about 11.1 m2/kg under the listed reference condition. Actual site coverage depends on concrete porosity and preparation.

What recoating interval should be planned?

The application guide lists a minimum interval of 3 hours and a maximum of 168 hours. If the maximum interval is exceeded or dust is present, sand and clean the surface before application.

What substrate condition is required before application?

The substrate should be sound, clean and dry. Remove oil, mold, dust and loose material; concrete surface pH should be below 10 and substrate moisture content below 10%.

Why use BW8009 before a polyurea coating?

BW8009 is selected when the concrete primer layer needs efficient wet-out, high penetration into pinholes and small defects, surface sealing, and reliable adhesion for the following coating.

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If you are evaluating BW8009 for high-coverage concrete sealing penetration, moisture blocking or adhesion improvement before a polyurea coating system, request the latest technical data sheet and project-specific application review before ordering.