Page 120 - 《精细化工》2021年第10期
P. 120
第 38 卷第 10 期 精 细 化 工 Vol.38, No.10
2021 年 10 月 FINE CHEMICALS Oct. 2021
功能材料
PE 基聚硅氧烷/改性 SiO 超疏水薄膜的构筑
2
朱文澄 1,3 ,桂雪峰 1,2,3 ,李志华 1,3 ,涂园园 1,2,3 ,
林树东 1,2,3 ,胡继文 1,2,3*
(1. 中国科学院广州化学研究所 中国科学院新型特种精细化学品工程实验室 广东省电子有机聚合物材
料重点实验室,广东 广州 510650;2. 国科广化韶关新材料研究院 南雄中科院孵化器运营有限公司,广
东 南雄 512400;3. 中国科学院大学,北京 100049)
摘要:使用十八烷基三甲氧基硅烷(OTMS)对纳米 SiO 2 进行表面疏水改性,将得到的改性纳米 SiO 2 (OTMS-SiO 2 )
添加到有机硅树脂(SI)中,然后采用两步法在聚乙烯(PE)薄膜表面固化制备了复合涂层 SI/OTMS-SiO 2 。通
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1
过 FTIR、 HNMR、 SiNMR、TGA 对 OTMS-SiO 2 及复合涂层进行了表征,采用接触角测量仪、SEM、AFM 对
复合涂层疏水特性和形貌进行了测试和观察,最后对复合涂层的耐磨性和附着力进行了分析。结果表明,SiO 2
表面成功引入了 OTMS,且 OTMS-SiO 2 均匀附着在硅树脂涂层上,增加了表面粗糙度,得到了 PE 基固化超疏
水复合涂层。当 OTMS-SiO 2 添加量为正己烷质量的 8%时,制得的复合涂层的水接触角为 154°,滚动角为 7°,
并具有良好的耐磨性,其附着力可达 4A 等级。
关键词:超疏水涂层;聚乙烯薄膜;纳米 SiO 2 ;有机硅树脂;功能材料
中图分类号:TB34 文献标识码:A 文章编号:1003-5214 (2021) 10-2050-08
Construction of PE-based polysiloxane/modified SiO 2 superhydrophobic film
1,3
1,3
ZHU Wencheng , GUI Xuefeng 1,2,3 , LI Zhihua , TU Yuanyuan 1,2,3 ,
LIN Shudong 1,2,3 , HU Jiwen 1,2,3*
(1. CAS Engineering Laboratory for Special Fine Chemicals, Guangdong Provincial Key Laboratory of Organic
Polymer Materials for Electronics, Guangzhou Institute of Chemistry, Chinese Academy of Sciences, Guangzhou 510650,
Guangdong, China; 2. CASH GCC Shaoguan Research Institute of Advanced Materials, Incubator of Nanxiong CAS Co.,
Ltd., Nanxiong 512400, Guangdong, China; 3. University of Chinese Academy of Sciences, Beijing 100049, China)
Abstract: Octadecyltrimethoxysilane (OTMS) was introduced to hydrophobically modify the surface of
nano-silica, then the modified nano-silica (OTMS-SiO 2) was added into the silicone resin (SI) as
superhydrophobic modifier. Subsequently, SI/OTMS-SiO 2 functional composite coating was constructed
with polyethylene (PE) as substrate by a two-step cure method. OTMS-SiO 2 and composite coatings were
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characterized by FTIR, HNMR, SiNMR and TGA. The hydrophobic properties and morphology of
composite coatings were measured and observed by contact angle measuring instrument, SEM and AFM.
Finally, the wear resistance and adhesion of composite coatings were analyzed. The results showed that
OTMS was successfully introduced onto nano-silica, OTMS-SiO 2 uniformly loaded onto the coating of
silicone resin and increased the surface roughness, as well as the composite coating was obtained. When the
addition amount of OTMS-SiO 2 was 8% of the mass of n-hexane, the performance of the prepared
PE-based cured coating acquired a water contact angle of 154° and a roll angle of 7°, and exhibited
excellent wear resistance and adhesion reached 4A level.
Key words: superhydrophobic coating; polyethylene film; nano-silica; silicone resin; functional materials
收稿日期:2021-03-30; 定用日期:2021-06-11; DOI: 10.13550/j.jxhg.20210333
基金项目:国家自然科学基金(21404121);广州市科技计划重点项目(201904020019)
作者简介: 朱文澄(1996—),女,硕士生,E-mail:paris_1015@163.com。联系人:胡继文(1966—),男,教授,E-mail:hujiwen@gic.ac.cn。