| 二硫化钼-氧化石墨烯纳米粒子的添加量对水性聚氨酯丙烯酸树脂涂层防腐蚀性能的影响 |
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| 引用本文： | 王江宇,郭小凤,石磊,陈立全,王旭,刘立起.二硫化钼-氧化石墨烯纳米粒子的添加量对水性聚氨酯丙烯酸树脂涂层防腐蚀性能的影响[J].上海大学学报(自然科学版),2021,28(1):121-131. |
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| 作者姓名： | 王江宇 郭小凤 石磊 陈立全 王旭 刘立起 |
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| 作者单位： | 1.上海大学 体育学院, 上海 200444;2.上海大学 材料科学与工程学院, 上海 200444 |
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| 基金项目： | 云南省重大科技专项项目(202002AB080001-2) |
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| 摘 要： | 金属腐蚀给世界经济带来巨大损失, 防止金属腐蚀成为人们关注的焦点. 采用一种简单的方法合成二硫化钼-氧化石墨烯 (molybdenum disulfide-graphene oxide, MoS$_{2}$-GO), 将其作为纳米填料加入水性聚氨酯丙烯酸树脂 (waterborne polyurethane acrylic, WPUA) 涂层, 解决金属腐蚀的问题. 首先, 利用氨基丙基三乙氧基硅烷 (aminopropyltriethoxysilane, APTES) 对二硫化钼进行改性合成硅烷偶联剂改性二硫化钼 (molybdenum disulfide modified by silane coupling agent, A-MoS$_{2}$); 然后, 将 A-MoS$_{2}$ 与氧化石墨烯 (graphene oxide, GO) 在 N, N-二甲基甲酰胺 (dimethyl formamide, DMF) 中进行反应得到 MoS$_{2}$-GO 纳米粒子; 最后, 按照不同添加量 (0%、0.2%、0.4%、0.6%、 0.8% 和 1.0%) 将其加入 WPUA 涂层. 结果显示: MoS$_{2}$-GO 纳米粒子成功合成, 对比发现其中 0.4%MoS$_{2}$-GO/WPUA 涂层的表面平整致密, 接触角为 99.67$^{\circ}$; 在 3.5% NaCl 溶液中浸泡 28 d Bode 图中 $\vert Z\vert _{0.01{\rm Hz}}$ 为 3.19$\times $10$^{7} \Omega\cdot $cm2, Nyquist 图为 1 个半圈, 相角图表现为 90$^{\circ}$ 的单峰, 表明具有更好的防腐蚀性能.
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| 关 键 词： | 水性聚氨酯丙烯酸树脂 二硫化钼-氧化石墨烯 氧化石墨烯 防腐 |
| 收稿时间： | 2020-03-09 |
Effect of molybdenum disulfide-graphene oxide nanohybrids on anticorrosive waterborne polyurethane acrylate coatings |
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| WANG Jiangyu,GUO Xiaofeng,SHI Lei,CHEN Liquan,WANG Xu,LIU Liqi.Effect of molybdenum disulfide-graphene oxide nanohybrids on anticorrosive waterborne polyurethane acrylate coatings[J].Journal of Shanghai University(Natural Science),2021,28(1):121-131. |
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| Authors: | WANG Jiangyu GUO Xiaofeng SHI Lei CHEN Liquan WANG Xu LIU Liqi |
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| Affiliation: | 1. College of Physical Education, Shanghai University, Shanghai 200444, China;2. School of Materials Science and Engineering, Shanghai University, Shanghai 200444, China |
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| Abstract: | Metal corrosion considerably affects the global economy; thus, strategies for the prevention of metal corrosion have gained considerable research and industrial attention. To develop one such strategy, herein, molybdenum disulfide-graphene oxide (MoS$_{2}$-GO) nanohybrids is synthesized by a simple method. The as-synthesized MoS$_{2}$-GO nanohybrids are added to waterborne polyurethane acrylates (WPUA) to prepare anticorrosive MoS$_{2}$-GO/WPUA coatings. Firstly, silane-functionalized molybdenum disulfide (A-MoS$_{2}$) via simple covalent functionalization with 3-aminopropyltriethoxysilane (APTES) is obtained. Secondly, MoS$_{2}$-GO nanohybrids are synthesized by a simple method in N, N-dimethylformamide (DMF). Finally, different amounts of the MoS$_{2}$-GO nanohybrids (0, 0.2%, 0.4%, 0.6%, 0.8%, 1.0%) are added to WPUA to prepare MoS$_{2}$-GO/WPUA coatings. The results show that the MoS$_{2}$-GO nanohybrids are synthesized successfully. The surface of the 0.4% MoS$_{2}$-GO/WPUA coating consisting the 0.4% MoS$_{2}$-GO sample is smooth. The contact angle is 99.67$^{\circ}$ and $\vert Z\vert _{0.01{\rm Hz}}$ is 3.19$\times $10$^{7}\Omega \cdot $cm2 after 28 days of immersion in 3.5% NaCl. The Nyquist plot shows a semicircle and the phase angle diagram has a single peak close to 90$^{\circ}$, indicating high corrosion resistance. |
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| Keywords: | waterborne polyurethane acrylate (WPUA) molybdenum disulfide-graphene oxide (MoS$_{2}$-GO) graphene oxide (GO) anticorrosive |
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