This study intended to develop a healthy and environmentally friendly super-hydrophobic PET polyester textile fabric using a specific Fluoro Silane finish(SHF).A novel SHF was prepared and applied on a polyester fabri...This study intended to develop a healthy and environmentally friendly super-hydrophobic PET polyester textile fabric using a specific Fluoro Silane finish(SHF).A novel SHF was prepared and applied on a polyester fabric using a pad-dry-cure method.The finished fabric was evaluated for the degree of hydrophobicity,durability and stain repellence.The finished fabric exhibited static water contact angle greater than 170o and received 90 AATCC(4 ISO)rating that is recognized as super-hydrophobicity and this property was maintained even after a 50,000-cycle abrasion test.FTIR analysis identified the characteristic peaks related to Si-O-Si and C-F asymmetric stretching bands of the finish on the fabric indicating a robust attachment on the fabric.Finished fabric did not show any change in appearance or tactile characteristics of the fabric.展开更多
The motion of droplets on a super‐hydrophobic surface,whether by sliding or rolling,is a hot research topic.It affects the performance of super‐hydrophobic materials in many industrial applications.In this study,a s...The motion of droplets on a super‐hydrophobic surface,whether by sliding or rolling,is a hot research topic.It affects the performance of super‐hydrophobic materials in many industrial applications.In this study,a super‐hydrophobic surface with a varied roughness is prepared by chemical‐etching.The adhesive force of the advancing and receding contact angles for a droplet on a super‐hydrophobic surface is characterized.The adhesive force increases with a decreased contact angle,and the minimum value is 0.0169 mN when the contact angle is 151.47°.At the same time,the motion of a droplet on the superhydrophobic surface is investigated by using a high‐speed camera and fluid software.The results show that the droplet rolls instead of sliding and the angular acceleration increases with an increased contact angle.The maximum value of the angular acceleration is 1,203.19 rad/s^(2) and this occurs when the contact angle is 151.47°.The relationship between the etching time,roughness,angular acceleration,and the adhesion force of the forward and backward contact angle are discussed.展开更多
文摘This study intended to develop a healthy and environmentally friendly super-hydrophobic PET polyester textile fabric using a specific Fluoro Silane finish(SHF).A novel SHF was prepared and applied on a polyester fabric using a pad-dry-cure method.The finished fabric was evaluated for the degree of hydrophobicity,durability and stain repellence.The finished fabric exhibited static water contact angle greater than 170o and received 90 AATCC(4 ISO)rating that is recognized as super-hydrophobicity and this property was maintained even after a 50,000-cycle abrasion test.FTIR analysis identified the characteristic peaks related to Si-O-Si and C-F asymmetric stretching bands of the finish on the fabric indicating a robust attachment on the fabric.Finished fabric did not show any change in appearance or tactile characteristics of the fabric.
基金The authors acknowledge the financial support from the National Natural Science Foundation of China(Grant Nos.U1809214 and U1809213)the National Basic Research Program of China(973 Program)(Grant No.2013CB632302)+1 种基金the Foundation of Key Laboratory of Marine Materials and Related Technologies,Chinese Academy of Sciences(2018K01)the Foundation of Key Laboratory of Marine Materials and Related Technologies,CAS(2018K01).
文摘The motion of droplets on a super‐hydrophobic surface,whether by sliding or rolling,is a hot research topic.It affects the performance of super‐hydrophobic materials in many industrial applications.In this study,a super‐hydrophobic surface with a varied roughness is prepared by chemical‐etching.The adhesive force of the advancing and receding contact angles for a droplet on a super‐hydrophobic surface is characterized.The adhesive force increases with a decreased contact angle,and the minimum value is 0.0169 mN when the contact angle is 151.47°.At the same time,the motion of a droplet on the superhydrophobic surface is investigated by using a high‐speed camera and fluid software.The results show that the droplet rolls instead of sliding and the angular acceleration increases with an increased contact angle.The maximum value of the angular acceleration is 1,203.19 rad/s^(2) and this occurs when the contact angle is 151.47°.The relationship between the etching time,roughness,angular acceleration,and the adhesion force of the forward and backward contact angle are discussed.
