Waterproofing Materials and Waterproofing Materials for Building Roofs

• CAS No.: 952
• Color: All Color Can Offer
• Appearance: Liquid
• Main Raw Material: Polyurea
• Method: Handabel Brush or Roller
• Level: Middle Coating or Top Coating
• Model NO.: STWD952
• Drying Method: Air Drying
• Certification: ISO14001, ISO9001
• Substrate: Steel , Concrete
• Components: Mdi
• Formation Mechanism: Conversion Type
• Transport Package: Iron Bucket Packaging
• Specification: 20kg/group or 25kg/group
• Trademark: STWD
• Origin: Shanghai, China
• Production Capacity: 80000kg/Day

Product Description

STWD952 single component polyurea waterproof
anticorrosion protective coating

Product descriptions   STWD952 is a single component aromatic polyurea waterproof anti-corrosion protective coating material, it has excellent adhesion force with various substrate. Due to its unique chemical structure, the product not only has excellent resistance to chemical corrosion medium, but also with excellent elasticity, high strength, abrasion resistance, impact resistance, scratch resistance and other physical properties.

Product features and advantages
*High solids, low VOC emissions  
*Easy to apply, brush, roller, air spray or airless spray all suitable.
*High physical properties of wearable, impact resistance and scratch resistance
*Excellent waterproof performance
*Excellent chemical resistance, can withstand certain concentration of acid, alkali, salt, oil, organic solvents etc.
*Excellent adhesion force, fast bonding well on the surface of steel, concrete, wood, fiberglass and other substrates.
*Wide temperature requirements, can be used in environment of -50 ºC ~ 120ºC.
*One component material, easy operation without ratio mixed, reducing labor costs

Typical use        Anticorrosion waterproof protection of petroleum, chemical, transportation, construction, electricity, container and other industries. Maintenance of bridges, waterproof anticorrosion of tunnels, waterproofing protection of industrial floor, sewage water treatment pool, building roofing, water conservancy dam, hydropower station buildings.
Products information

Item	Results
Appearance	Color adjustable
Specific gravity (g/m³)	1.2
Viscosity (cps)@20ºC	420
Solid content (%)	75 (vary with different colors)
Dry time(hour)	1.5-2
Pot life (h)	1
Theoretical Coverage	0.15kg/m2 (thickness 100um)

Physical properties 

Item	Test standard	Result
Hardness (Shore A)	ASTM D-2240	82
Elongation (%)	ASTM D-412	400
Tensile strength(Mpa)	ASTM D-412	24
Tear strength (kN/m)	ASTM D-624	65
Wear resistance (750g/500r)/mg	HG/T 3831-2006	10
Adhesive strength (Mpa), metal base	HG/T 3831-2006	10
Adhesive strength (Mpa), concrete base	HG/T 3831-2006	3.2
Impact resistance(kg.m)	GB/T23446-2009	1.0
Density(g/cm³)	GB/T 6750-2007	1.2

Chemical resistance

Acid resistance 30%H2SO4 or 10%HCI,30d	No rust, no bubbles, no peel off
Alkali resistance 30% 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# diesel, crud 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 requires other specific data.)

Application environment
Relative temperature: -5~-+35ºC
Relative humidity: RH%:35-85%
Dew point: the temperature of metal surface must have 3ºC than dew point.

Application tips
Recommended dft: 100-200 (as design requirement)
Re-coating interval: 4-24h, if the interval time exceed 24h or has dust deposited, sand-blasting first and clean well prior to application.
Coating method: airless spray, air spray, brush, roller

Application note
It can be applied in the low temperature below 5ºC. Put the coating drums into the air-conditioning room for over 24 hours when apply in the low temperature environment.
STWD recommends to agitate the coating uniform prior to application, pour accurate quantity of material to another vessel and seal well immediately. Don't pour the rest liquid to the original bucket.
The viscosity of product is set up in the factory, thinner shall not be random added by the applicators. Call the manufacturer for instructions of special thinner if the viscosity changed as the application environment and humidity.

Curing time

Substrate temperature	Surface dry time	Foot traffic	Solid dry
+10ºC	6h	24h	7d
+20ºC	3h	12h	6d
+30ºC	2h	8h	5d

Shelf Life
* storage temperature: 5ºC~32ºC
* shelf life: 10 months (sealed)
* store in cool and ventilated place, avoid direct sunshine, keep away from heat
* package: 5kg/bucket, 20kg/bucket, 25kg/bucket

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