The bonding performance of sealants in practical applications is influenced by many factors, mainly the following five:A. Properties of the bonded substrate: Substrates with higher surface energy and greater polarity are easier to bond.B. Type of sealant: Different types of sealants have different bonding properties to different materials.C. Service environment of the sealant: Temperature and humidity of the construction environment, chemical solvents, pH value, UV aging, etc.D. Bonding interface: Roughness, porosity, looseness, smoothness and compactness, flat or curved surface, etc.E. Construction process: Construction environment (temperature, humidity), substrate surface treatment (cleaning and primer application), sealant application and finishing, etc.
In practical applications, we should standardize the construction process, strictly follow the sealant construction technology, fully avoid bonding failure caused by adverse conditions among the above factors, and at the same time strengthen quality control during the construction process.