Two Component Concrete Waterproof Coating Polyurea Product

Product Description

Product Description

 STWD9014 Polyurea for Drinking Water Applications is a 100% solids aromatic polyurea elastomer synthesized from isocyanate and amino compound components, requiring professional polyurea spraying equipment for application.
This product has passed hygienic safety tests conducted by the Shanghai Center for Disease Control and Prevention (Shanghai CDC). It fully complies with the Hygienic Safety Evaluation Specification for Drinking Water Transmission and Distribution Equipment and Protective Materials issued by the National Health Commission of the People's Republic of China, and has been granted the Hygienic Approval Certificate for Drinking Water Sanitary Safety Products.
STWD9014 offers excellent waterproofing, antibacterial performance, wear resistance, water immersion resistance and cathodic disbondment resistance. It is widely used in the tap water, food processing and pharmaceutical industries across the Americas and Australia, delivering reliable and long-lasting protection for critical facilities.

Product features and advantages
· Solvent-free with 100% solid content, non-toxic and side-effect free to humans and animals, odorless, safe and environmentally friendly
·  Rapid curing, can be spray-formed on any curved, inclined and vertical surfaces without sagging
·  Dense and seamless coating with good flexibility
·  Strong adhesion, can quickly bond to steel and concrete substrates
·  Excellent waterproof, antibacterial and microbial growth inhibition performance
·  Good corrosion resistance and chemical medium resistance (e.g., acids, alkalis, salts, etc.)
·  Outstanding water immersion resistance and cathodic disbondment resistance
·  Good wear resistance, impact resistance and shock absorption performance
·  Excellent temperature change stability
·  Rapid curing enables quick resumption of use of the application area
·  Superior durability reduces lifetime maintenance costs
·  Extends the service life of spray-coated structures

Application scope
Antibacterial protection of waterworks, swimming pools, water parks, kindergartens, pharmaceutical workshops, hospital operating rooms, biological laboratories, sterile kitchens, etc.

Product information

Item	Part A	Part B
Appearance	Pale yellow liquid	Adjustable
Specific gravity (g/cm³)	1.08	1.02
Viscosity(cps)@25ºC	820	670
Solid content (%)	100	100
Mix ratio(volume ratio)	1	1
Gel time(second)@25ºC	4-6
theoretical coverage (dft)	1.08kg/m2ilm thickness:1mm

Physical properties of products

Item	Test standard	Result
Hardness (Shore A)	ASTM D-2240	90
Elongation rate(%)	ASTM D-412	480
Tensile strength(Mpa)	ASTM D-412	20
Tear strength (kN/m)	ASTM D-624	69
Impermeability (0.4Mpa/2h)	GB/T23446-2009	impermeable
Wear resistance(750g/500r)/mg	HG/T 3831-2006	4.5
Adhesive strength(Mpa)concrete base	HG/T 3831-2006	3.2
Adhesive strength(Mpa) steel base	HG/T 3831-2006	11.5
Cathodic disbondment [1.5v,(65±5)ºC,48h]	HG/T 3831-2006	≤15mm

Chemical resistance

Acid resistance 10%H2SO4 or 10%HCI,30d	No rust, no bubbles, no peel off
Alkali resistance 10% NaOH, 30d	No rust, no bubbles, no peel off
Salt resistance 30g/L,30d	No rust, no bubbles, no peel off
Salt spray resistance, 2000h	No rust, no bubbles, no peel off
Oil resistance 0# die sel, crude,30d	No rust, no bubbles, no peel off
(For reference: the above data is acquired based on GB / T9274-1988 test standard. Pay attention to the influence of ventilation, splash and spillage. Independent immersion testing is recommended if requires other specific data)

Application environment

Environment temperature	0ºC-45ºC
Product pre-heat temperature	65ºC-70ºC
Pipe pre-heat temperature	55ºC-65ºC
Relative humidity	≤90%
Dew point	≥3ºC

Application guide

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

Application note

Agitate part B uniform 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 STWD polyurea special primer please refer to STWD companies' other brochure.

Always apply STWD spray polyurea 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 STWD spray polyurea series.

Product curing time

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

Note: the curing time varies with the environment condition especially the temperature and relative humidity.

Shelf Life
* From the manufacturer date and on the original package sealed condition:
Part A: 10 months
Part B: 10 months
*storage temperature:+5-35°C
Packing: Part A 210kg/drum, part B 200kg/drum
Make sure the product package sealed well
* store in cool and ventilated place, avoid direct sunshine exposure.

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     
STWD 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. STWD does not take any other responsibilities except the product quality and reserve the right of any modifications on the listed data without prior notice.