on, the types of sealants can be divided into silicone, polysulfide, polyhexyl ester, silane-modified, rubber, acrylate.
2.
- Stone dry-hanging adhesives and silicone weathersealers are suitable for stone curtain wall, used in dry-hanging, repairing and joint sealing.
1. Why do sealants need to use backing materials and prevent three-sided bonding?
k the bonding and prevent the sealant from three-side bonding, because three-side bonding affects the displacement capacity of the sealant, leading to cracking of the gel, bonding damage and other phenomena.
2. why color sealant
3. Why does sealant
(1) Sealant and the substrate itself does not st
(2) construction is not standardized, such as the substrate surface cleaning is not clean, maintenance environment or maintenance time does not meet the requirements, not according to the requirements of the primer, two-component ratio is not right, etc..
Any sealant can not guarantee that all the substrates are well bonded, so the construction of the substrate must be bonding and compatibility test, qualified before applying glue, if necessary, apply primer solution; before applying glue must be the substrate surface dust, oil and other dirt cleaned according to the specified method; single-component maintenance at least 7 days, two-component maintenance at least 3 days in the case of low temperature and humidity should be extended maintenance time.
