Vinyl chloride waterproof coating, also known as PVC waterproof coating, PVC resin or plastic and coal tar modified with each other, mixed with the appropriate amount of plasticizers, stabilizers, fillers and so on. According to the construction method is divided into thermoplastic (J-type) and thermosoluble (S-type) two bells. According to the heat-resistant and low-temperature performance were 801 and 702 two models, due to the high quality of PVC ointment with heat does not flow, cold and frost soft, strong adhesion, elasticity and plasticity of good, corrosion-resistant, slow aging, easy to construct. In addition to embedded seams sealing, it is now widely used in roofing, wall waterproofing and general corrosion-resistant flooring projects. "According to nearly 18 years of incomplete statistics, the national cumulative production of ointment reached 1.12 million tons, waterproofing project usage of about 200 million square meters, and a small amount of exported to Africa, Singapore and Hong Kong, Macao, etc., as a new type of waterproofing materials in the domestic manufacturers, the application of a wide range of long test of the city and the land, can be said to be in the forefront. "
PVC waterproof coating is especially suitable for old house repair. It has excellent watertightness and airtightness, users have coated to where where there is no leakage. pvc ointment waterproofing construction of the necessary thickness is the use of years of guarantee, pvc waterproofing coating in the atmosphere the surface begins to age, but the aging layer into a protective layer, the lower layer no longer aging, so as long as to ensure that the thickness of the adequate, can achieve the design requirements of the durability of the years. Because of the low cost of PVC waterproof coating, used for waterproofing has good economic and social benefits. PVC waterproof coating strong adhesion, the grass-roots level of the overlay in any grass-roots level.
PVC waterproof coating is cold-setting, in any shape of the grass-roots level can be a one-time to reach a considerable thickness, forming a continuous closed waterproof whole. PVC waterproof coating waterproofing roof as far as possible to use the composite waterproofing construction program, that is, non-permanent buildings (Ⅳ waterproofing) should be full of two-layer coating, the thickness of ＞ 4mm, the dosage of not less than 5 kg per m2, important or special industrial and civil building roofing. PVC waterproof coating can also be used with other waterproof coating composite.
In the construction of large areas, first of all, the seams, nodes and other leakage-sensitive parts of the pre-enforcement treatment, this process is to ensure that waterproofing project durability and waterproofing quality key.
But it is worth paying attention to is not a high-quality PVC waterproofing coatings can not realize the above requirements, unqualified PVC waterproofing coatings should be strictly prohibited.
PVC waterproof coating in the construction should be pushed while hot scraping, heating should be uninterrupted stirring. pvc waterproof coating it has other waterproofing materials incomparable advantages, but it also has great disadvantages, such as the coating is easy to contraction, cracking, easy to burn when heated lumps, affecting the appearance of the waterproofing materials in the construction of the tar type and the process of heating will be the release of harmful substances affecting human health. In view of this, people are gradually replaced by other waterproofing materials, but also because it has other materials irreplaceable economy and waterproofing performance superiority, however, at present, the use of PVC waterproof coating waterproofing roofing business is not a minority.
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