water resistant putty

Water resistant putty is a kind of putty for building, specifically refers to a kind of putty that can meet the standard of "indoor putty for building" (JG / t298-2010), which is n-type, that is, water resistant putty standard. In the "building interior putty" (JG / t298-2010) standard, in addition to "water-resistant (type n)" products, there are also "ordinary (type Y)" products. The main difference between the two is water resistance. And determined. The bonding strength of waterproof products is required to be more than 0.50 MPa in standard state, while that of ordinary products is only more than 0.30 MPa. In addition, aquatic products are required to be soaked in water for 48 hours after scratching, and there shall be no peeling, cracking or bulging, It can reach the bond strength of more than 0.30mpa, while ordinary products will drop after immersion in water, and the strength is zero.