Severe environment such as long term wind and sun exposure and temperature difference between winter and summer are important factors affecting the durability of road sealants. And excellent uv resistance, weather resistance, high and low temperature resistance and other properties are the unique advantages of silicone sealant different from other general organic adhesive materials. This is due to the unique chemical molecular structure of silicone rubber, and because the glass transition temperature of silicone rubber is far lower than that of general organic materials, so silicone sealant can still maintain good elasticity at low temperature (-50℃), no embrittlement, no cracking, high temperature conditions (200℃) is not easy to soft degradation, Stable performance can be maintained in higher temperature range.
These superior characteristics of silicone sealant are the important reason why it is widely used in the field of construction, and this characteristic is also its advantage over other organic sealant, silicone road sealant life can reach at least 10 years. This will effectively protect the quality of the road surface, prolong the life of the road, reduce the cost of repeated replacement, repair and other maintenance. In Europe and the United States, silicone road sealant has been used for more than 20 years, according to the American Concrete Pavement Association report, currently in the United States about 52% of the road construction and maintenance units use silicone sealant for road joint sealing.