Page 62 - 精细化工2020年第2期

第 37 卷第 2 期 精 细 化 工 Vol.37, No.2
202 0 年 2 月 FINE CHEMICALS Feb. 2020

功能材料
超疏水近红外吸收涂层的制备及性能表征

张伟钢，洪 婷，吕丹丹

（滁州学院 材料与化学工程学院，安徽 滁州 239000）

摘要：以纳米 SiO 2 为微纳结构改性剂、聚二甲基硅氧烷（PDMS）为粘合剂、Sm 2 O 3 为功能颜料，通过合理的
涂层结构设计，采用刮涂法制备得到具有超疏水特性的 PDMS/Sm 2 O 3 复合涂层。分析探讨了 PDMS 和 Sm 2 O 3
配比（质量比）、纳米 SiO 2 添加量及表面微纳结构层对涂层性能的影响规律。结果表明，PDMS 和 Sm 2 O 3 质量
比对涂层性能具有重要影响，当 m(PDMS)∶m(Sm 2 O 3 )=6∶4 时，涂层对 1.06 μm 近红外光的反射率可低至 58.8%，
涂层的水接触角可达到 113°，明显高于传统聚氨酯基近红外吸收涂层的水接触角。通过在 PDMS/Sm 2 O 3 复合涂
层表面涂覆具有明显乳突状结构特征的 PDMS/SiO 2 微纳结构层，可使涂层实现超疏水特性。PDMS/Sm 2 O 3 复合
涂层表面经 SiO 2 质量分数为 30%的 PDMS/SiO 2 微纳结构层涂覆后，其水接触角可增大到 158°，滚动角可低至 4°，
同时具有较低的 1.06 μm 近红外反射率（61.4%）性能。
关键词：复合涂层；纳米 SiO 2 ；近红外吸收；超疏水；水接触角；功能材料
中图分类号：TN213; TJ04; TB306 文献标识码：A 文章编号：1003-5214 (2020) 02-0264-06

Preparation and performance characterization of superhydrophobic
near- infrared absorption coating

Zhang Weigang, Hong Ting, Lü Dandan
（College of Materials and Chemical Engineering, Chuzhou University, Chuzhou 239000, Anhui, China）

Abstract: Through reasonable coating structural design, super hydrophobic polydimethylsiloxane (PDMS)/
Sm 2O 3 composite coating was prepared by doctor-blade method using nano-SiO 2, PDMS and Sm 2O 3
particles as micro-nano structural modifier, adhesives and functional pigments, respectively. The effects of
different ratio (mass ratio) of PDMS to Sm 2O 3, addition amount of nano-SiO 2 and surface micro-nano
structural layer on the coating properties were discussed. The results showed that the mass ratio of PDMS to
Sm 2O 3 played an important effect on the coating properties. When the mass ratio of PDMS to Sm 2O 3 was
6∶4, the reflectance of the prepared coating to the 1.06 μm near-infrared light was as low as 58.8%. The
water contact angle reached 113°, which was significantly higher than that of the conventional
polyurethane-based near-infrared absorption coating. The coating exhibited superhydrophobic property due
to coating a PDMS/SiO 2 micro-nano structural layer with a distinct papillary structure on the surface of the
PDMS/Sm 2O 3 composite coating. After the surface of PDMS/Sm 2O 3 composite coating was coated by
PDMS/SiO 2 micro-nano structural layer with a SiO 2 mass fraction of 30%, the water contact angle of the
coating was increased to 158°, and the roll angle was as low as 4°. The coating had lower reflectance
(61.4%) to the 1.06 μm near-infrared light.
Key words: composite coating; nano-SiO 2; near-infrared absorption; superhydrophobicity; water contact
angle; functional materials

[1]
近年来，随着激光制导和探测技术的快速发展， 就能被击中摧毁的水平 。鉴于此，通过一些技术
激光制导导弹或炸弹的投掷精度已达到一旦被发现 手段来降低目标的激光信号显著性，使目标不易被

收稿日期：2019-06-14; 定用日期：2019-08-01; DOI: 10.13550/j.jxhg.20190537
基金项目：国家自然科学基金（61705029）；安徽省自然科学基金（1808085MF187）；滁州学院大学生创新训练计划项目
（2019CXXL122）；安徽省示范实验实训中心项目（2017sxzx33）
作者简介：张伟钢（1982—），男，博士，讲师，E-mail：abczwg15@163.com。