What are the common waterproof materials?

Waterproof materials are indispensable decoration materials for kitchens, bathrooms and balconies. At present, the waterproof materials on the market mainly include the following points: 1, flexible mortar: the ratio of emulsion to mortar is 5:4, which is elastic and will not affect the waterproof effect even if the base is deformed and cracked. It is mostly used for meeting water surfaces such as walls and floors, but not for back water surfaces such as top surfaces. If the waterproofing is not done well and there is water seepage, it is easy to wrap it up and seep. 2. Rigid mortar is also called rigid mortar: the ratio of emulsion to mortar is 1:4. After brushing, the coating does not need to be treated, which is convenient for direct tiling. After curing, it will form a cement block, which will not leak water, and its back water surface is very waterproof, which is its greatest advantage. The disadvantage is that this kind of mortar has high hardness and is easy to crack with the deformation and cracking of the base, so it is generally used for waterproofing of the back water surface. 3. Polyurethane: it can be used indoors and outdoors. After brushing, it is very thick, about 3 mm, and the elastic tension is above 300%. Very elastic, any base material will not crack, and the waterproof effect is the best. Although the safety performance is controlled in terms of environmental protection requirements, this waterproof coating has a strong smell, which is difficult for ordinary people to accept, and the environmental performance of a few waterproof brands is not up to standard. Polyurethane is gelatinous and thick, so it is difficult and complicated to use scraper in construction. 4, acrylic: acrylic pure liquid, ready to use when opened. Water-based, water-soluble, easy to combine with ground cracks, forming a solid waterproof layer, waterproof effect is better than flexible mortar. Flexible mortar and acrylate are more suitable for long-term immersion because of their good waterproof effect. The earliest and largest application of acrylic acid is in environmental protection paints and coatings. The biggest feature of this material is that it can be diluted with water to become a water-soluble material, which is colorless and tasteless (the paint can be mixed with colorants as needed), but it is indeed an extremely dense waterproof material behind the conjunctiva. Therefore, the current paint basically has no taste of the previous paint (the previous paint was mixed with gasoline or thinner). This material has considerable elasticity and ductility behind the conjunctiva, which determines that it will not break with the settlement and dislocation of the base layer.