卞达,钱善华,何颖诗,刘阳,倪自丰.面向水润滑条件磷酸盐黏结复合涂层的摩擦学性能研究[J].表面技术,2023,52(11):216-224, 247.
BIAN Da,QIAN Shan-hua,HE Ying-shi,LIU Yang,NI Zi-feng.Study on the Tribological Properties of Phosphate Bonded Composite Coatings under Water Lubrication Conditions[J].Surface Technology,2023,52(11):216-224, 247 |
| 面向水润滑条件磷酸盐黏结复合涂层的摩擦学性能研究 |
| Study on the Tribological Properties of Phosphate Bonded Composite Coatings under Water Lubrication Conditions |
| 投稿时间：2022-09-25 修订日期：2023-05-13 |
| DOI：10.16490/j.cnki.issn.1001-3660.2023.11.016 |
| 中文关键词: 复合涂层 水凝胶 聚丙烯酰胺-海藻酸盐 水化润滑 摩擦学性能 |
| 英文关键词:composite coating hydrogel PAAM-alginate hydration-lubricating tribological property |
| 基金项目:国家自然科学基金(52205196);江苏省自然科学基金(BK20190611) |
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| Author | Institution |
| BIAN Da | School of Mechanical Engineering,Jiangsu Wuxi 214000, China |
| QIAN Shan-hua | School of Mechanical Engineering,Jiangsu Wuxi 214000, China |
| HE Ying-shi | School of Textile Science and Engineering, Jiang Nan University, Jiangsu Wuxi 214000, China |
| LIU Yang | School of Mechanical Engineering,Jiangsu Wuxi 214000, China |
| NI Zi-feng | School of Mechanical Engineering,Jiangsu Wuxi 214000, China |
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| 中文摘要: |
| 目的 实现海洋产业设备的不断优化，提高复合涂层在水环境下的摩擦学性能，扩大复合涂层在水环境中的应用。方法 通过添加不同含量的PS(聚苯乙烯微球)制备多孔磷酸盐黏结复合涂层，再将PAAM-alginate(聚丙烯酰胺-海藻酸盐)水凝胶真空压入多孔涂层中，并利用 UV(紫外线)引发聚合，从而制备PAAM-alginate/磷酸盐黏结复合涂层。此外，利用多功能摩擦试验机、白光干涉仪、SEM和EDS等试验方法，对复合涂层在水环境中的摩擦学特性和微观结构进行研究。结果 PAAM-alginate水凝胶的压入，降低了复合涂层的表面粗糙度，平均为0.8 μm。由于水凝胶较强的吸水和溶胀能力，改善了复合涂层的亲水性。PAAM-alginate水凝胶的水化润滑能力有效提高了复合涂层在水环境中的摩擦学性能。其中，具有4%PS的复合涂层显示出最佳摩擦学性能，平均摩擦系数由0.494降到了0.332，磨损率为1.18 mm3/(N.m)，仅为0%PS的复合涂层磨损率的1/4。水环境下，4种不同PS含量的复合涂层的磨损形式都为疲劳磨损。结论 适量地压入PAAM-alginate水凝胶可以降低复合涂层的表面粗糙度，提高复合涂层亲水性，并提升复合涂层在水环境下的耐磨损性能。 |
| 英文摘要: |
| Hydrogel is a kind of three-dimensional network polymer formed by chemical or physical cross-linking of hydrophilic polymers. It can also be defined as a three-dimensional cross-linked polymer network that can swell but is insoluble in water. As a typical soft material, hydrogel contains many hydrophilic groups in their 3D networks and is one of the most important synthetic alternatives for natural lubricators. This material has ultra-high hydration lubrication capacity and can produce low friction coefficients, providing the basis for tribological applications in water environments. In order to improve the tribological properties of the composite coatings, the hydration and lubrication ability of hydrogels were applied to composite coatings. In this paper, porous phosphate bonded composite coatings were prepared by adding different contents of PS (polystyrene microspheres), and then PAAM-alginate (polyacrylamide-alginate) hydrogel was vacuum added to the porous coating, and UV light was used in initiated polymerization to prepare PAAM-alginate/phosphate bonded composite coatings. In the experiment, a Vickers hardness tester was used to measure the hardness of the coating. A contact angle measuring instrument was used to measure the contact angle of the coating. A multifunctional friction tester was used to characterize the tribological properties of the coating. A white light interferometer was used to measure the surface roughness of the coating and observe the three-dimensional morphology of wear marks on the coating, to calculate the wear rate of the coating. A scanning electron microscope was used to analyze the wear scar and cross-sectional micro-morphology of the coating. The wear scar and cross section micro-morphology of the coating were analyzed with a SEM (scanning electron microscope) and an EDS (energy dispersive spectroscopy). In addition, the swelling behavior of different composite coatings was evaluated by weighing. The results showed that with the addition of PAAM-alginate hydrogel, the hardness and surface roughness of the composite coating was reduced, and the average roughness was 0.8 μm. And because of its strong water absorption and swelling ability, the hydrophilicity of the composite coating was improved. More importantly, the hydration-lubricating ability of the PAAM-alginate hydrogel effectively enhanced the tribological properties of the composite coating in aqueous environment. Among them, the composite coating with 4 wt-% PS showed the best tribological properties, the friction coefficient decreased from 0.494 to 0.332, and the wear rate was 1.18 mm3/N.m, which was only a quarter of the wear rate of the composite coating with 0 wt-% PS, and one third of the wear rate of the composite coating with 6 wt-% PS. And the wear forms of the four composite coatings with different PS contents were fatigue wear in aqueous environment. The analysis results show that, an appropriate amount of PAAM-alginate hydrogel can reduce the surface roughness of the composite coating, improve the hydrophilicity of the composite coating, and improve the tribological properties of the composite coating in water environment. Based on the experimental results, the wear mechanism of PAAM alginate/phosphate bonded composite coatings is analyzed in this paper, which provides an new idea for the application and design of PAAM alginate hydrogel in water lubrication materials. |
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