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                                             Spray polyurea coating SPUA-DHK3100

1. Product introduction

SPUA-DHK3100 is a 100% solid, fast set, spray-applied, two component aromatic polyurea elastomer. The system consists of the A component, a quasi-prepolymer rich of free NCO, and the B component, a mixture of polyetheramine, amine extenders and other additives. The unique polyurea chemistry allows this material to be tolerant of moisture and lower temperatures during application. This means that high humidity and hidden moisture in concrete has minimal effect on the application of this product.

 

• Fast cure, short downtime but non-sagging.


• Moisture and temperature insensitivity during processing.


• High thermal stability.


• 100% solid, Non-VOC and odorless, environmental friendly.


• Extraordinary physical properties.


• Excellent adhesion to primed concrete.


• Seamless, flexible and waterproof.


• High elongation properties, resistance to freeze-thaw.


• Superior weather resistance.


• No chalking and fading in long-term outdoor use.

 

2. Application

Designed for use as a smooth seamless waterproof lining coating system for interior and a roof and wall coating system for exterior applications. Ideally suitable for use in areas including:

Metal, concrete, wood and foam roofing.

• Mechanical rooms.


• Cold storage areas.


• Basing and reservoirs.


• Marine bridges.


• Tunnels.


• Underground engineering.


• Cooling towers of power plants.


• Aquarium lining.


• Pond lining.


• Water and waste water linings.

 

3. Technical data

 

No.	Item	Index
		I	II
1	Color	Optional
2	Solid	100%
3	Gel time	10 seconds
4	Mixing ratio(by volume)	1:1
5	Flash point	>200°C
6	Recommended spreading thickness	1-2mm
7	Drying time	Temperature, humidity and film thickness dependent

 

 

4. Performance characteristics

 

No.	Item	Specification
1	Flash point	>200°C
2	Tensile strength	15Mpa	21Mpa
3	Tensile elongation	350%	520%
4	Tear strength	59 KN/m	78 KN/m
5	Impact resistance	1.5Kg·m	1.5Kg·m
6	Adhesion	2.6Mpa	2.6Mpa
7	Hardness	Shore A85-95	Shore A80-90
8	Water impermeability, 0.4Mpa×2h	Impermeable
9	Specific gravity	1.02g/cm3	1.02g/cm3
10	Service temperature	-50°C-150°C

 

5. Recommended Primers

Concrete

SPUA-DHK400 sealing primer @8-10sqm/ kg per coat

Others: contact us for a recommendation

 

 

 

 

6. Packing

Part A: 220kg /drum

Part B: 200kg/drum

 

 

 

 

 

QINGDAO HENGKE FINE CHEMICALS CO., LTD is a chemical leading company, which combines researching, manufacturing and marketing into one body. The plant is located nearby the Qingdao Airport with very convenient transportation. Hengke has five divisions mainly engaged in Textile Auxiliaries, Food Additives, Oil Drilling & Water Treatment chemicals, Waterproof materials and Pharmaceutical intermediate to provide customers with all-around products and professional technical services.

 

With the concept "quality-first, integrity-based, innovative and efficient" we attempt to build DHKCHEM a famous brand and endeavor to make mutual benefit with all customers to realize our soul "ORDER US, RELAX YOUSELVES".

 

 

 

 

 

7. Storage condition

• A component is easily affected by moisture must be protected from moisture contamination. Containers are factory sealed with an inert gas to prevent contamination. Keep all containers tightly closed during storage. For further storage after opening, containers must be purged with nitrogen gas or dry air and tightly sealed from moisture.


• Store drums and pails in a cold, dry and ventilated location between 15-40°C.


• Keep away from rain and sunshine.


• Keep away from fire and heat source.


•  

8. Installation instruction

a. Surface preparation

Surface must be properly prepared. Remove all oil, dust, grease, dirt etc to ensure adequate adhesion.

 

b. Application condition

Temperature:

Air and surface: -20°C-40°C

Relative humidity: ≤90%

 

c. Equipment (For example)

Plural component heated spray equipment (required)

Equipment…………………………………………Gusmer H-20/35

Gun………………………………………………….GX7 DI, GX7-400, or GX-8 etc

Fluid pressure…………………………………….50—60kg/cm²

Air pressure……………………………………….≥7kg/cm²

Inlet strainer screen……………………………...30 mesh

Gun screen…………………………………………80 mesh

Heaters and heated hose………………………..65°C

Mix ratio…………………………………………….1:1

*If specific application equipment is listed above, equivalent equipment can be substituted. Contact us for specific information.

 

d. Cure time

Surface dry (25°C) ≤1 minute

Inside dry (25°C) ≤1 minute

Recoat time: Minimum unlimited

          Maximum ≤3hours

*Due to rapid cross-linking, recoating must be done as soon as the first coat is dry.

*If maximum recoat time is exceeded, abrade surface before recoating.

*Contact our technical team for recoat procedure.

 

 

9. Attention

Any thinner is not allowed.

Thoroughly mix container of B component with an air-driven power mixer for a minimum of 5 minutes prior to application.

Consult MSDS sheet before use. Contact us for additional technical data and instructions.