Waterproof polyurethane coating for railway bridges

1.Product description:
    This product is a kind of environmental polyurethane waterproof coating   targeting at the existing railway technical standards and design documentation,which   belong two component chemical reaction-type elastic coating. Group A were polyurethane pre-polymer and were in Group B by plasticizers, curing agents, anti-aging agent of the composition of the liquid, use only two groups were mixed with a certain ratio even in brushing The surface of the grass-roots level, integration can automatically create a waterproof membrane in a row, and bonding closely at the grass-roots, solidification into a final response to the high flexibility, seamless waterproof layer.
2. The scope of application:
    In the railway bridge deck sprayed water-proof layer to form, or used for waterproofing membrane;
3. Features:
    After the film strength, elongation, strong adhesion and weather resistance strong, corrosion-resistant, non-toxic, environmental protection, moderate rate of curing, easy to use.
4. Technical indicators:
    This product is in line with the "passenger line Concrete bridge deck waterproofing temporary technical conditions (revised edition)" on the performance of polyurethane waterproof coating technical indicators.
5. Usage and notes:
    Base: formation, no dust, no oil pollution, the basic dry.
    Waterproof coating must be the product for use ratio for each amount of mixing is appropriate to 30kg.
    Waterproof paint should be evenly mixed.
    Construction of waterproof polyurethane coating usually carried out twice, after the paint will be mixed with rubber scraper or brush brown evenly coated scratch at the surface of the base, scratch in two directions perpendicular to the repeated many times to ensure that the paint in the infiltration of surface-bonding, in the first layer coating dry form can be cured after a second paint over construction.
Stir evenly to the ballast water-proof coating block from the side of the wall, poured water-proof coating, brushing by the width of about 90cm to use the scraper on the other side brushing.
    Waterproof coating from each end of the agitation to end no later than brushing should not be more than 20 minutes.
When the temperature below 5¡æ, in order to ensure construction quality, mixing in waterproof coatings, water-proof coating can be added to the weight of 3-8% of xylene or dibutyl phthalate; indirect steam can also be used for waterproofing Paint the A and B respectively, were two warm-up, but when the warm-up A, B were the two groups are not allowed to see open flame.
6. Transport and storage:
    This product is non-flammable and explosive materials. Use metal or plastic barrels packaging.
    Products should be stored in a cool, dry, ventilated place. Transport in the prevention of sun, rain, damaged packaging and away from heat sources. The maximum storage temperature does not exceed 40 ¡æ, the minimum is not lower than 5¡æ.
    Has not yet run out of the paint must be covered, not easy to seal moisture-curing.