Analysis of Expansion Characteristics According to Deterioration Conditions for Superabsorbent Polymer Content of a Polyurethane Waterproof Material with Water Expansion Properties

Polyurethanes with water expansion properties are manufactured by incorporating polyurethane resins and superabsorbent polymers. This study aimed to present an optimal mixing ratio of a polymer that can express the effective waterproofing performance material properties. The evaluation results confirmed was exerted at more than 10% 150% or more, which were then set as minimum standard value for ensuring performance. In addition, chemical erosion (by hydrochloric acid, sulfuric nitric alkali, sodium chloride), freeze-thaw, wet-dry cycles deterioration conditions determine under use, maximum evaluated after pretreatment conditions. It found that, based on above, ensure all 14%.