Single Component Polyurea Hand Applied Waterproof Coating

Product Description

 

Product Description

STWD9528 is a single component aromatic modified polyurea waterproof anti-corrosion protective coating. This product has good adhesion to concrete and steel substrates, and it is easy to apply without the need of specialized polyurea coating spraying equipment. Due to its unique chemical structure, the film-forming coating has good resistance to chemical medium and excellent waterproof performance, making it an ideal material for waterproof and anti-corrosion protection applications. The characteristics of high elasticity and high adhesion are particularly suitable for the waterproofing of building roofs, balconies, bathrooms, exterior walls, and basements, especially for the repair of old SBS membrane material roofs and the anti-corrosion and waterproofing of old colored steel tile roofs.

Features and benefits   
*High solid content, low VOC emissions
*The application method is simple and does not require professional polyurea coating spraying equipment. It can be applied by brush, roller, or high-pressure airless machine.
*The coating has good flexibility, strong leakage resistance, and excellent waterproof performance.
*Excellent resistance to chemical medium corrosion, capable of withstanding certain concentrations of acids, alkalis, salts, oils, organic solvents, etc
*Excellent adhesion, which can quickly and firmly bond to the surface of substrates such as concrete, steel, wood, glass fiber, etc
*Wide temperature range for use ranging from -50 ºC to 120 ºC
*It is one component material, easy to apply, without the need for mixing, reducing labor costs

Application scope
Construction, water conservancy, transportation, chemical industry, electricity, etc. For example, waterproofing of building roofs, bathrooms, exterior walls, basements, water conservancy dams, hydropower station buildings, etc. Especially for the repair of old SBS membrane material roofs and the anti-corrosion waterproofing of old colored steel tile roofs coating.

Product information  

Item	Results
Appearance	Color is adjustable
Specific gravity (g/cm^3))	1.25±0.05
Viscosity (cps )@20ºC	7500±500
Solid content (%)	≥80
surface dry time (hrs)	2-4
Pot life (hrs)	1h
theoretical coverage	0.75kg/m^2(thickness 500um)

hysical properties

Item	Test standard	results
Hardness (Shore A)	ASTM D-2240	78
Elongation (%)	ASTM D-412	420
tensile strength (Mpa)	ASTM D-412	16
Tear strength (kN/m)	ASTM D-624	62
abrasion resistance(750g/500r),mg	HG/T 3831-2006	10
Adhesive strength (Mpa) steel base	HG/T 3831-2006	8
Adhesive strength (Mpa) concrete base	HG/T 3831-2006	3.3
impact resistance (kg.m)	GB/T23446-2009	1.0
Density (g/cm^3)	GB/T 6750-2007	1.25

Chemical properties

Acid resistance 10%H2SO4 or10%HCl,30d	no rust, no bubbles, no peel off
Alkali resistance 10%NaOH, 30d	no rust, no bubbles, no peel off
Salt resistance 10g/L,30d	no rust, no bubbles, no peel off
Salt spray resistance, 2000h	no rust, no bubbles, no peel off
Oil resistance	no bubbles, no peel off
0# d iesel, cru de oil, 30d	no rust, no bubbles, no peel off
(For reference: pay attention to the influence of ventilation, splash and spillage. Independent immersion testing is recommended if requiring detail data.)

Application instructions
Recommended dry film thickness: 300-1000um (or as design requirements)
Coating interval: 4-24 hours. If the re-coating time exceeds 24 hours or there is dust on the surface, It is recommended to use sandpaper to polish and clean before application.
Recommended coating methods: brush, roller, high-pressure airless spraying.

Application environment
Environmental temperature: -5-35 ºC
Relative humidity: 35-85%
Dew point: When applying on metal surfaces,the surface temperature must be 3 ºC higher than the dew point temperature.

Substrate treatment
Metal surface: It is recommended to sandblast for rust removal, reaching Sa2.5 level according to ISO8501-1 or GB8923 standards.
Concrete surface: achieve a sturdy, dense, flat, clean, and dry state. There should be no phenomena such as sanding, peeling, cracks, honeycomb pits, etc. Usually, it needs to be repaired with putty.
Wood surface: clean, dry, free from burrs, debris, and loose debris.
Consult STWD technical personnel for the surface treatment when apply on other substrate.

Application note
This coating can be used at a low temperature of -5 ºC. When using in low-temperature environments, it is recommended to place the coating bucket in an air-conditioned room for at least 24 hours.
STWD recommends mixing the coating evenly before use, pour out the exact quantity that would use up, and quickly closing the lid of the barrel. The material after use shall not be returned to the original barrel.
The coating viscosity of this coating product has been adjusted as needed before leaving the factory. Application personnel cannot add diluents without permission. If the viscosity needs to be adjusted due to changes of temperature, please consult the coating manufactuer and obtain guidance before adding special diluents.

Curing time

Substrate temperature	Surface dry time	Foot traffic time	Solid cure
+10ºC	5h	24h	7d
+20ºC	3h	16h	6d
+30ºC	2h	8h	5d

Shelf life
* Package: 5kg/barrel, 25kg/barrel.
* shelf life: 6 months (sealed)
* Storage environment temperature: 5 ºC -35 ºC
* store in cool and ventilated place, avoid sunshine direct exposure, keep away from heat.

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

Integrity declaration     
SWD guarantee 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. SWD does not take any other responsibilities except the coating product quality and reserve the right of any modifications on the listed data without prior notice.