Answer:
Generally, the elongation rate of water-based waterproof adhesives after curing is not inferior to that of PU or waterproof felt. The problem is that these water-soluble elastic materials such as vulcanized rubber or acrylic rubber are formed by “drying” rather than “reacting. The film formation process occurs from the top down, so if the coating thickness exceeds 0.5mm, the surface has already been coated; however, the water inside has not evaporated yet, which will cause bubbles and hydrolysis later on. This greatly reduces the strength and stability of the waterproof material, resulting in endless disadvantages and, of course, losing the high-quality waterproof performance.