Preparation and Properties of Polyurethane／Urea Modified by Phenolic Resin
Wang Liuyang1, Ye Mengxing2, Wang Shan2, Liu Fangfang2
1. Institute of Chemical and Pharmaceutical Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, China; 2. College of Textile and Garment, Hebei University of Science and Technology, Shijiazhuang 050018, China
Abstract: An isocyanate-terminated prepolymer (A) containing polyether polyol is prepared by reaction of methylene diphenyl diisocyanate(MDI50) with polyether polyol(1000D), then is further reacted with R comprising polyether polyol, polyether amine, phenolic resin and chain extending agent to obtain a phenolic resin modified polyurethane／urea coating. The properties of the prepared coating are investigated. The results show that when the phenolic resin in R is about 50％, the tensile strength of polyurethane／urea increases from 8.9 MPa to 13.2 MPa. Meanwhile, the resistance to strong acid and damping performance are improved, and the glass transition temperature increases from 12 ℃ to 106 ℃. Finally, the dynamic mechanical analyzer was used to forecast the energy storage modulus and damping properties in different frequencies.
王镠旸, 叶梦醒, 王姗, 刘方方. 酚醛树脂改性聚氨酯／聚脲涂料的制备及其性能研究[J]. 涂料工业, 2018, 48(1): 17-21.
Wang Liuyang, Ye Mengxing, Wang Shan, Liu Fangfang. Preparation and Properties of Polyurethane／Urea Modified by Phenolic Resin. Paint & Coatings Industry, 2018, 48(1): 17-21.