The characteristics of the one-component polyurethane waterproof coating are as follows:
1. Generally, the construction process can be carried out directly on one surface of a wet base layer, and the construction speed is relatively fast, and the construction period can be shortened at the same time.
2. For high strength and high elongation ratio, a high recovery rate for elasticity, and a cracking or stretching for the base layer is generally comparatively strong.
3. It is generally very good for low temperature flexibility.
4. If a bonding force of the base layer is relatively strong, it is not necessary to apply a treatment agent for the base layer.
5, the coating is generally relatively compact, no pinholes, no bubbles, the water vapor permeation number is also very small, while waterproofing can also achieve the gas barrier.
6, the color can generally be adjusted, but also can meet a different customer's requirements for a different color of the surface of a human.
7, for a single brushing is generally up to 1-3MM thick but not foaming effect.
What is the requirement for construction?
1. Basic requirements: The grassroots level should generally be flat. dry. There are also no sundries. For unevenness or a deformation joint of the base layer, the crack must be leveled with cement mortar, and a connecting pipe joint with the base layer must be firm for sanitary facilities, the joints should be tight, and the ends should be smooth and not Allow loose action.
2, the coating film construction generally has to be painted three times, the first time after curing for 12-24h, at the same time the second painting, the direction of the coating is a vertical direction of the first coating film, In the third pass, if a rigid protective layer is used on the coating film, in order to increase the adhesion between the waterproof layer or the rigid protective layer, it is generally possible to sprinkle a thin surface of the surface when the coating film has not been completely cured. Clean sand, after the film coated with sand is solidified, carry out a construction protection.
3. An additional waterproof layer for the detail: a waterproof layer at the yin and yang corners, as well as the roots and cracks.
4. At the same time, according to one requirement of the project, the construction of the coating film can be completed once and after curing, a construction effect of a protective layer can be performed.
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