ABSTRACT

Herein, we report the preparation and characterisation of fluororubber coated superhydrophobic Poly (ethylene tetrapthalate) (PET) fabric and polyurethane (PU) sponge. The coating surface structure over PET fabric is more stable and hydrophobic (water contact angle (CA) ≥ 153°) with mass ratio 5:1 of fluororubber/carbon nanotubes (CNTs). Fluororubber/CNT coated PET fabric has good wear resistance and hydrophobicity with repeated friction. PU sponge coated with the ratio 8:4 of fluororubber/carbon black (CB) is the best ratio showing water CA ≥ 157°. Fluororubber/CB coated PU sponge has good oil-water separation and repeated oil absorption ability. Its absorption ability to various solvents and oils can reach 20–50 times its own weight. The EMI SE of fluororubber coating in 8.2–12.4 MHz range has improved with the increased CNTs content. The highestEMI SE valuee, i.e. 52.30 db achieved at 2.0 wt% CNT content. Developed fluororubber superhydrophobic coating material has good potential in the EMI shielding application.

摘要

在此，我们报告了氟橡胶涂层超疏水聚（四邻苯二甲酸乙二酯）（PET）织物和聚氨酯（PU）海绵的制备和表征。PET织物上的涂层表面结构更稳定和疏水（水接触角（CA）≥153°），氟橡胶/碳纳米管（CNTs）的质量比为5：1。氟橡胶/碳纳米管涂层PET织物在反复摩擦下具有良好的耐磨性和疏水性。涂有8:4比例的氟橡胶/炭黑(CB)的PU海绵是最佳比例，显示水CA≥157°。氟橡胶/CB涂层PU海绵具有良好的油水分离和反复吸油能力。它对各种溶剂和油的吸收能力可达自身重量的20-50倍。随着碳纳米管含量的增加，氟橡胶涂层在 8.2-12.4 MHz 范围内的 EMI SE 有所改善。最高 EMI SE 值 e，即 52.30 db 在 2.0 wt% CNT 含量下实现。开发的氟橡胶超疏水涂层材料在 EMI 屏蔽应用中具有良好的潜力。