LD waterproof polyurethane waterproof coating
I. product overview
LD water-based polyurethane waterproof coating is a water-based polyurethane as the basic material and its polymer emulsion as basic material, match with a variety of additives, such as high quality packing materials refined but become a kind of one-component oil-in-water type waterproof coating, after coating can be formed with high elasticity, toughness, no seams, ageing resistance, resistance to weathering excellent waterproof coating, and can be made according to the need of color, is an ideal new type of waterproof material.
Ii. Performance characteristics
1. Water is a dispersing medium, which is green, non-toxic and tasteless, pollution-free and does no harm to people.
2. Thick film coating, complete waterproof layer, no seam, strong adhesion to base surface and strong adaptability to deformation of base layer.
3. Good durability, high strength, high elongation and water resistance.
4. According to the needs, color can be mixed to achieve the effect of decoration and beautification.
5. Convenient construction, easy maintenance and wide application.
Iii. Performance index JC/ t864-2008 polymer emulsion building waterproof coating
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NO:
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A pilot project
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indicators
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I
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II
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1
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拉伸强度MPa ≥
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1.0
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1.5
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2
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断裂延伸率 %
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300
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300
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3
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Low temperature flexible around 10 mm diameter rod 180 °
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-10℃
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-20℃
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4
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Impervious 0.3MPa 30min
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不透水
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5
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Solid content %≥
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65
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6
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The drying time
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surface drying time n≤
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4
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hard drying time n≤
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8
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7
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After processing the
The tensile strength
Keep the rate of %
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Heat treatment ≥
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80
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Alkali treatment ≥
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60
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Acid treatment ≥
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40
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Artificial climate aging treatment≥
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---
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80-150
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8
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After processing the
rupture
Stretch rate%
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Heat treatment ≥
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200
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Alkali treatment ≥
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Acid treatment ≥
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Artificial climate aging treatment≥
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---
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200
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9
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Heating shrinkage %
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elongation ≤
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1.0
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To shorten the≤
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1.0
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A for leakage only.
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4. Scope of application
1. It is applicable to waterproof and anti-seepage projects in non-long-term immersion water environment, such as roof, wall, toilet and basement.
2. It is especially suitable for light-weight thin-shell roof waterproof engineering.
5. Construction methods
Base processing
The construction surface should be solid, smooth, dry, clear, free from water, dust, oil, uneven and cracks must be leveled first.
The node processing
The waterproof layer construction should be carried out first for such basic details as yin-yang Angle, tube root and deformation joint, and the coating can be applied 2-4 times (the thickness is less than 1mm). If the reinforcement material is applied, the deformation joint should be soaked through with paint, and then coated with a layer of reinforcing material to form the structure of additional layer empty shop.
Waterproof construction
For the first brush, mix the paint and water at least 1:1 evenly (but there is no need to mix water in the impermeable waterproof layer), and spray it on the base surface, making the base surface moist but without coating accumulation. After the first drying, the second painting, do not need to water, the direction of the painting and the first vertical. If the coating cannot reach the design thickness, continue to brush until the required thickness. If reinforcement is needed, glass fiber cloth or non-woven cloth can be applied before the coating is solidified. At the end and edge, add paint for sealing. If the protective layer is needed, it can be sprayed with coarse sand or fine rice stone on the surface of the protective layer before solidification at the last time, so as to make the bond between the protective layer and the waterproof layer firm.
Matters needing attention
1. The direction of each brush should be perpendicular to the last one.
2. After the previous coating film is dry, the next coating brush can be carried out.
3, 5 ℃ under unfavorable construction, rainy days can not open the construction.
4. During the construction, it is advisable to apply thin and multi-brush, not once thick, and the total thickness of the coating shall meet the design requirements.
5. After completion, water storage experiments can be carried out after 7 days of continuous drying.
Reference usage: 1 mm thick amount is about 1.2 kg - 1.5 kg / ㎡.
Packaging, storage and transportation
1. This product is packaged in sealed plastic drum, which is non-dangerous and can be transported safely.
2. The shelf life of unopened product is 6 months, and it should be used within 24 hours after opening.
3, should be stored in a dry, cool, ventilated place, storage temperature at 5 ℃ to 35 ℃.
