Water expansion polyurethane seal composition for reinforcing joints in waterproof sheets and complex waterproofing method using thereof

摘要

The present invention relates to a water-swellable polyurethane seal composition for reinforcing the joints of a waterproof sheet and a composite waterproofing method using the same, the purpose of which is to apply to the joint of the waterproof sheet to cause the waterproof sheet to break repeatedly by shrinking and expanding. It is to provide a water-swellable polyurethane seal composition having a new composition having a function of preventing water leakage by absorbing water and expanding to fill the fracture site and prevent water flow, and to provide a composite waterproofing method using the same. The composition of the present invention is 70-90 parts by weight of 3-hydroxy-2,2-dimethylpropanoic acid, 2,4,6-triamino-S-triazine 60, based on 100 parts by weight of chloroisopropyldimethylbenzyl isocyanate. ~ 80 parts by weight, 50 to 70 parts by weight of tetrahydrofuran, 40 to 60 parts by weight of glucose and D-Glucaric acid 30 to 50 parts by weight of A solution mixed; 100 parts by weight of 2,4-dihydroxy-5-nitropyrimidine, 60-80 parts by weight of m-nitrobenzenediazonylhydrogensulfate, 50-70 parts by weight of dicyclohexylcarbodiimide, 6-bromo Water-expandable polyurethane for reinforcing the joints of waterproof sheet composed of B solution mixed with 40-60 parts by weight of hexane, 30-50 parts by weight of calcium bicarbonate and 20-40 parts by weight of sodium lauryl ether sulfate The seal composition and the composite waterproofing method using the same are features of the invention.