化工新型材料

化工新型材料 ›› 2025, Vol. 53 ›› Issue (12) : 124-129. DOI: 10.19817/j.cnki.issn1006-3536.2025.12.042

新材料与新技术

有机硅改性环氧树脂/纳米SiO₂防污涂料的制备及性能研究

刘运学, 邵敏, 范兆荣, 谷亚新, 刘鹏, 王晓丹

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Preparation and performance of silicone-modified epoxy resin/nano-silica antifouling coating

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Received		Published
2025-01-02		2025-12-20
Issue Date	Revised Date
2025-12-17	2025-01-02

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摘要

采用羟基封端聚二甲基硅氧烷树脂(PDMS)改性环氧树脂(E51),将纳米二氧化硅、铁红、滑石粉分散于有机硅改性环氧树脂中,制成低表面能海洋防污涂料。使用扫描电镜(SEM)观察纳米填料是否分散均匀;测试涂层的硬度、附着力、抗冲击和拉伸性能等力学指标的变化,评价涂层的物理性能;采用接触角、耐酸碱以及电化学交流阻抗(EIS)和极化曲线考察防腐性能;进行抗小球藻实验考察防污性能。结果表明:在有机硅改性环氧树脂中添加3%的纳米SiO₂时,涂膜接触角为(116.5±1.92)°,铅笔硬度为6H,拉伸强度为7.74MPa,抗冲击性能好,耐酸耐碱性好,能充分展现出更好的防腐和防污性能。

Abstract

A low surface energy marine antifouling coating was prepared by modifying epoxy resin (E51) with hydroxy-terminated polydimethylsiloxane resin (PDMS) and dispersing nano-silica,iron oxide red and talc powder into the silicone modified epoxy resin.Scanning electron microscopy (SEM) was used to observe whether the nano fillers dispersed uniformly.The changes of hardness,adhesion,impact resistance and tensile properties of the coating were identified to evaluate the physical properties of the coatings.Contact Angle,acid and alkali resistance,electrochemical AC impedance (EIS) and polarization curve were used to investigate the corrosion resistance.The antifouling performance was investigated by anti-chlorella test.The results showed that when 3% nano-SiO₂ was added to the silicone-modified epoxy resin,the coating exhibited a contact angle of (116.5±1.92)°,a pencil hardness of 6H,a tensile strength of 7.74MPa,good impact resistance,and excellent acid and alkali resistance,fully demonstrating enhanced anti-corrosion and anti-fouling properties.

关键词

环氧树脂 / 纳米二氧化硅 / 防腐 / 防污 / 涂料

Key words

epoxy resin / nano-silica / anti-corrosion / antifouling / coating

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刘运学, 邵敏, 范兆荣, 谷亚新, 刘鹏, 王晓丹. 有机硅改性环氧树脂/纳米SiO₂防污涂料的制备及性能研究[J]. 化工新型材料, 2025, 53(12): 124-129 DOI:10.19817/j.cnki.issn1006-3536.2025.12.042

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