Water transport mechanism and performance evaluation in polyurethane materials: A state-of-the-art review
Cuixia Wang, Zihan Xu, Yangyang Xia, Chao Zhang, Hongyuan Fang, Kangyan Sun
Abstract
In environments with high humidity or water exposure, the performance of polyurethane materials could be adversely affected by water and its penetration, which could compromise their long-term utility. The influence of water on polyurethane materials is affected by water transport and various factors. This article summarizes the factors affecting the water absorption of polyurethane, introduces research methods for water transport in polyurethane, analyzes the pathways of water transport, and reviews the influence of water on the mechanical properties of polyurethane and its composite materials. The ultimate goal of this paper is to furnish a comprehensive theoretical foundation and a valuable reference for the research and practical application of polyurethane materials in water environments. • Polyurethane water absorption is influenced by multiple factors. • Summarized the research methods for water transport in polyurethane. • Analyzed the pathways of water transport in polyurethane. • Water significantly affects the mechanical properties of polyurethane.