日光驱动自修复超疏水棉织物的制备

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中图分类号：TS116；O647.5 文献标志码：A DOI：10.13338/j.issn.1674-649x.2025.03.006

Preparation of sunlight-driven self-healing superhydrophobic cotton fabrics

WANG Xuman ，FAN Xinchen ，ZHAO Qianqian ，ZHANG Caining

School of Materials Science and Engineering，Xi'an Polytechnic University，Xi'an 71Oo48，China）

Abstract In order to prepare superhydrophobic cotton fabrics with good self-healing properties， SA@PDA microspheres with core-shell structure were prepared by using stearic acid SA as core material and PDA as shell material. Then，the microspheres and PDMS were dip-coated on the surface of cotton fabric to prepare SA PDA superhydrophobic cotton fabric. The SA PDA coreshell microspheres and cotton fabrics were characterized by SEM，FT-IR and XPS.The photothermal conversion performance，self-healing performance and friction resistance of SA ⑥ PDA superhydrophobic cotton fabrics under simulated sunlight were studied，and the repair mechanism was discussed. The results show that the superhydrophobic cotton fabric coated with SA @ PDA coreshell microspheres has good photothermal conversion performance，and the temperature rise is 40.9°C after simulated sunlight irradiation. After losing superhydrophobicity，the cotton fabric can restore the superhydrophobic state after 30min of light repair，and can be recycled for 6 times.The fabric also has good friction resistance，and loses superhydrophobicity after rubbing with sandpaper for 3200cm . The self-healing mechanism of SA@PDA superhydrophobic self-repairing cotton fabric is the rapid migration of stearic acid in SA ② PDA core-shell microspheres under photothermal action.

Keywordsphotothermal conversion; superhydrophobic; self-healing;cotton fabric

0引言

超疏水材料在自清洁[]、防污染[2]、抗腐蚀[3]油水分离[4]、减阻[5]等领域具有广阔的应用前景，但其在使用时极易遭受刮擦磨损和化学破坏等，导致其低表面能物质的损失和微米-纳米级复合粗糙结构的破坏，从而失去超疏水性质，这一缺点严重阻碍了超疏水材料的实际应用[6-7]。（剩余13538字）