1.Production description
SPU Waterborne polyurethane waterproofing coating uses a special waterproof self- crosslinking pure acrylic emulsion as basic material, with a certain amount of modifying agent, surfactant, additives and pigment. Film is tough and resilient, and cohesive force is strong. It combines with basic layer form a complete firm -soft waterproof system to adapt to the structure deformation to achieve long-term waterproof impermeability.
2.Product Features
u Excellent low temperature resistance, elasticity, extensibility, water resistance and crack resistance;
u Excellent aging resistance, no changes of coating film and no appearance of yellow;
u Construction on the humid basal planes and having certain air permeability;
u Superstrong adhesion stress which is applicable to the basal planes of masonry, concrete, glass, wood, metal, gypsum, rubber, mortar, etc.;
u No toxic and no harm, VOC after solidification, and safety and environmental protection;
u Convenient construction, speedy solidification, high work efficiency and short construction period;
u Formation of colorful protective surfaces, and beautification of environment.
3.Technical specification
“Polymer emulsion architectural waterproof coating”
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No.
|
Item
|
Index
|
|
I
|
II
|
|
1
|
Tensile strength，MPa≥
|
1.0
|
1.5
|
|
2
|
Elongation at break ，%≥
|
300
|
|
3
|
Flexibility at low temperature，Rod bent 180 °around φ10㎜
|
-10℃, No cracks
|
-20℃, No cracks
|
|
4
|
Water impermeability，（0.3 MPa，30 min）
|
imperviousness
|
|
5
|
Solids content，%≥
|
65
|
|
6
|
Drying time，h
|
Surface drying time≤
|
4
|
|
Hard drying time≤
|
8
|
|
7
|
Tensile strength retention after treatment，%
|
Heat treatment≥
|
80
|
|
Alkali treatment≥
|
60
|
|
Acid treatment≥
|
40
|
|
Artificial weathering treatment a≥
|
－
|
80～150
|
|
8
|
Elongation at break after treatment，%
|
Heat treatment≥
|
200
|
|
alkali treatment≥
|
|
Acid treatment≥
|
|
Artificial weathering treatmena≥
|
－
|
200
|
|
9
|
Heating expansion rate，%
|
Elongation≤
|
1.0
|
|
Shorten≥
|
1.0
|
|
a— Only used on exposed products
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