Study on the Migration of Organic Compounds of Polyurethane Waterproof Coatings in Water Pipeline
In this paper,the migration behavior of organic compounds in polyurethane waterproofing coatings in water pipeline was investigated by field sampling and laboratory simulation.Continuous immersion experiments were carried out on suspected contaminated PPR pipes and cured polyurethane waterproof coatings,and a purge-trap/GC-MS method was established to analyze the composition of the soaking solution,and the types of pollutants that migrated from the polyurethane waterproof coatings to the PPR pipes were identified.Including 1,2,3-tritylene,1,2-diethylbenzene,3-propyl toluene and other tetratoluene organic compounds.The influence of these factors on the migration of organic compounds was analyzed by experiments of different soaking time and effective barrier thickness of waterproof base.The results show that the thickness and soaking time of the waterproof base significantly affect the migration behavior of organic compounds,which provides the theoretical basis and practical suggestions for optimizing the application of polyurethane waterproof coating in water pipeline.
万方数据
维普
