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Preparation of hydrophobic epoxy–polydimethylsiloxane–graphene oxide nanocomposite coatings for antifouling application
Soft Matter ( IF 2.9 ) Pub Date : 2019/12/09 , DOI: 10.1039/c9sm01952a Shatakshi Verma 1, 2, 3 , Smita Mohanty 3, 4, 5 , S. K. Nayak 1, 2, 3
Soft Matter ( IF 2.9 ) Pub Date : 2019/12/09 , DOI: 10.1039/c9sm01952a Shatakshi Verma 1, 2, 3 , Smita Mohanty 3, 4, 5 , S. K. Nayak 1, 2, 3
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Epoxy–polydimethylsiloxane–graphene oxide (EPG) nanocomposite coatings were successfully developed by loading different wt% of graphene oxide nanosheets (GNs) into an epoxy–hydroxy-terminated-polydimethylsiloxane (EP–hPD) matrix via a facile in situ preparation technique. The inclusion of GNs into EPN led to an increase in modulus of elasticity and tensile strength up to 1570.46 MPa and 31.54 MPa, respectively, in the case of 1 wt% loading of GNs in the EP–hPD matrix. Also, an increase in the water contact angle from 90.1° to 115.2°, 104.5° and 101.7° was discerned at 1, 3 and 5 wt% loadings of GNs respectively. Taber abrasion results demonstrated a decrease in abrasion loss by 33.3% at 1 wt% loading of GNs in comparison to the unreinforced coating. An improvement in the glass transition temperature (Tg) was observed from 63.5 °C for the neat sample to 77.6 °C, 76.3 °C and 71.6 °C for the 1, 3 and 5 wt% EPG nanocomposites, respectively. An inevitable enhancement in the properties of the nanocomposites was affirmed due to the synergistic effect of GNs dispersed within the EP–hPD blend matrix. The prominent findings of this work include a minimum corrosion rate of 0.73 × 10−2 mm per year and upgradation in the antifouling performance of the nanocomposite coatings in comparison to the neat coating.
中文翻译：
用于防污应用的疏水性环氧-聚二甲基硅氧烷-氧化石墨烯纳米复合涂料的制备
环氧聚二甲基硅氧烷-氧化石墨烯（EPG）的纳米复合材料涂层成功地被氧化石墨烯纳米片（GNS）的不同重量％的加载到环氧羟基封端的聚二甲基硅氧烷（EP-HPD）矩阵开发经由一个浅显的原位准备技术。在EP-hPD基体中GN的负载量为1％的情况下，EPN中包含GNs导致其弹性模量和拉伸强度分别增加至1570.46 MPa和31.54 MPa。同样，分别在GNs的1、3和5 wt％的负载下可以看到水接触角从90.1°增至115.2°，104.5°和101.7°。泰伯磨损结果表明，与未增强涂层相比，在GNs含量为1 wt％时，磨损损失降低了33.3％。玻璃化转变温度（T g从纯样品的63.5°C到1、3和5 wt％的EPG纳米复合材料的77.6°C，76.3°C和71.6°C分别观察到）。由于分散在EP-hPD共混物基质中的GN的协同作用，肯定了纳米复合材料性能的必然提高。这项工作的突出发现包括每年最低腐蚀速率为0.73×10 -2 mm，并且与纯涂料相比，纳米复合涂料的防污性能得到了提高。
更新日期：2020-02-13
中文翻译：
用于防污应用的疏水性环氧-聚二甲基硅氧烷-氧化石墨烯纳米复合涂料的制备
环氧聚二甲基硅氧烷-氧化石墨烯（EPG）的纳米复合材料涂层成功地被氧化石墨烯纳米片（GNS）的不同重量％的加载到环氧羟基封端的聚二甲基硅氧烷（EP-HPD）矩阵开发经由一个浅显的原位准备技术。在EP-hPD基体中GN的负载量为1％的情况下，EPN中包含GNs导致其弹性模量和拉伸强度分别增加至1570.46 MPa和31.54 MPa。同样，分别在GNs的1、3和5 wt％的负载下可以看到水接触角从90.1°增至115.2°，104.5°和101.7°。泰伯磨损结果表明，与未增强涂层相比，在GNs含量为1 wt％时，磨损损失降低了33.3％。玻璃化转变温度（T g从纯样品的63.5°C到1、3和5 wt％的EPG纳米复合材料的77.6°C，76.3°C和71.6°C分别观察到）。由于分散在EP-hPD共混物基质中的GN的协同作用，肯定了纳米复合材料性能的必然提高。这项工作的突出发现包括每年最低腐蚀速率为0.73×10 -2 mm，并且与纯涂料相比，纳米复合涂料的防污性能得到了提高。
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