文献类型：期刊文献

英文题名：Durable siloxane/polyurea superhydrophobic coatings based on microphase separation method and armour protection strategy

作者：Guo, Qi[1];Zhang, Ye[1];Liu, Yujian[1];Zhang, Yan[1]

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, Key Lab Specially Funct Polymer Mat & Related Tech, Minist Educ, Shanghai, Peoples R China

年份：2025

卷号：200

外文期刊名：PROGRESS IN ORGANIC COATINGS

收录：;EI(收录号：20245017523775);WOS:【SCI-EXPANDED(收录号:WOS:001390339900001)】；

基金：The work was supported by the Fundamental Research Funds for the Central Universities (JKD01241701) .

语种：英文

外文关键词：Superhydrophobic; Siloxane/polyurea copolymer; Microphase separation; Armour; Durability

摘要：Durability is essential for practical applications of superhydrophobic coatings. Here, siloxane/polyurea superhydrophobic coatings are fabricated via a convenient microphase separation method and armour protection strategy. Due to the incompatibility between the hard and soft segments, the dissimilar siloxane/polyurea chains microphase separate into different microdomains. It is found that the surface morphology and wettability are both influenced by the content of aminopropyl terminated polydimethylsiloxane (ATPDMS) and the type of diisocyanate (isophorone diisocyanate, aliphatic diisocyanate). The micrometer-scale folds and tiny bumps are formed on the surface of the ATPDMS0.3-HPUA, and the contact angles of coating reached 154 degrees. Owing to the protection of epoxy grooved armour, the coating retains its superhydrophobic properties even undergoing sandpaper abrasion, tape peeling, bending, sand and water impact tests. Moreover, the coating exhibits superior chemical stability with CAs of 151 degrees after 12 h of immersion in pH 2 to 12 acid or alkali solutions.