Preparation and anticorrosion properties of bio-based polybenzoxazine/cellulose nanocrystals superhydrophobic coating

被引：0
作者：
Cao Y. [1 ]
Lu X. [1 ]
Wang L. [1 ]
Yuan M. [1 ]
Xin Z. [1 ,2 ]
机构：
[1] Shanghai Key Laboratory of Multiphase Materials Chemical Engineering, School of Chemical Engineering, East China University of Science and Technology, Shanghai
[2] State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai
来源：
Huagong Xuebao/CIESC Journal | 2021年 / 72卷 / 11期
关键词：
Composites; Corrosion; Nanoparticles; Polybenzoxazine; Superhydrophobic coating;
D O I：
10.11949/0438-1157.20210820
中图分类号：
学科分类号：
摘要：
A bio-based benzoxazine monomer was synthesized by using cardanol, stearylamine and paraformaldehyde as raw materials. Differential scanning calorimetry and infrared spectroscopy were employed to investigate the thermal curing behavior of benzoxazine with tannic acid acting as the curing agent. The results show that tannic acid can effectively reduce the ring-opening curing temperature of benzoxazine. The polybenzoxazine primer was prepared on the surface of carbon steel sheet, and then the topcoat was obtained by adding amino-modified cellulose nanocrystalline. The bio-based superhydrophobic coating (PBTC) was constructed with static water contact angle of 161.1°±2.9°. The superhydrophobic coating exhibits good temperature resistance and scratch resistance. Moreover, the electrochemical measurement results indicated that the PBTC coating could still exhibit excellent corrosion resistance after immersion in NaCl aqueous solution for 30 days. © 2021, Editorial Board of CIESC Journal. All right reserved.
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页码：5717 / 5725
页数：8
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