魔芋葡甘聚糖溶液水基的润滑特性

doi:10.11901/1005.3093.2016.747

材料研究学报

2018, Vol. 32

Issue (1): 25-32 DOI: 10.11901/1005.3093.2016.747

研究论文

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魔芋葡甘聚糖溶液水基的润滑特性

漆雪莲, 张倩倩, 盛德尊, 李小磊, 张会臣(

)

大连海事大学交通运输装备与海洋工程学院大连 116026

Lubricating Property of Water Based Lubricant of Konjac Glucomannan

Xuelian QI, Qianqian ZHANG, Dezun SHENG, Xiaolei LI, Huichen ZHANG(

)

Transportation Equipments and Ocean Engineering College, Dalian Maritime University, Dalian 116026, China

引用本文:

漆雪莲, 张倩倩, 盛德尊, 李小磊, 张会臣. 魔芋葡甘聚糖溶液水基的润滑特性[J]. 材料研究学报, 2018, 32(1): 25-32.
Xuelian QI, Qianqian ZHANG, Dezun SHENG, Xiaolei LI, Huichen ZHANG. Lubricating Property of Water Based Lubricant of Konjac Glucomannan[J]. Chinese Journal of Materials Research, 2018, 32(1): 25-32.

全文: PDF(3603 KB) HTML

摘要:

以石英玻璃为摩擦副,研究在面接触条件下魔芋葡甘聚糖溶液的水基润滑特性。使用红外光谱仪测量了魔芋葡甘聚糖的分子结构,用多功能摩擦磨损试验机进行润滑特性试验,用LEXT OLS4000 3D激光共聚焦显微镜表征了试样的表面形貌,重点分析了不同浓度魔芋葡甘聚糖溶液的润滑特性。结果表明：浓度为0.3%的溶液具有最佳的润滑性能,石英玻璃间的摩擦系数约为0.002。在不同浓度的魔芋葡甘聚糖溶液的润滑条件下,摩擦副的摩擦系数随着转速呈现出不同的变化规律。由于硼酸离子与魔芋葡甘聚糖分子中的羟基发生化学反应生成硼酸多羟基化合物,硼酸的加入增强了水合分子层的稳定性。魔芋葡甘聚糖水基润滑界面,主要包含魔芋葡甘聚糖水合分子层和自由水分子层。水合分子层吸附在摩擦副表面形成吸附膜可避免摩擦副的直接接触,自由水分子层保证了润滑液的剪切流动性,两者的共同作用实现了有效润滑。

关键词 ：有机高分子材料, 材料表面与界面, 魔芋葡甘聚糖, 水基润滑, 面接触

Abstract：

The lubricating property of water-based lubricant of konjac glucomannan (KGM) was assessed for the contact surface of quartz to quartz. The molecular structure of konjac glucomannan was analyzed by Fourier transform infrared spectroscopy. The surface topographies of the worn quartz surface after sliding-wear were examined by LEXT OLS4000 3D microscope. The friction performance of the friction-pair of quartz against quartz was evaluated by the CETR Universal Micro-Tribometer (UMT-2). The lubricating property of KGM solutions was then analyzed. The results show that the 0.3% KGM solution possesses the best lubricity, in the presence of which the friction-pair of quartz exhibits a friction coefficient about 0.002. The frictional coefficient of the friction-pair of quartz varied with the KGM concentration of the solution, as well as the relatively rotating speed of the components of the friction-pair. By adding saturated boric acid to the solution, the hydration layer of KGM was promoted due to the coordination compound which was generated by the chemical reaction between the boric acid and the KGM molecules. The lubricating model of KGM solution was composed of hydrationlayers of KGM and water layers, in which the former absorbed on the frictional pairs to form a lubricating film, while the water layer ensures the shear liquidity of lubricant, only the combination of the two can realize the effective lubrication.

Key words： organic polymer material surface and interface in the materials skonjac glucomannan water based lubrication surface contact

收稿日期: 2016-12-20

ZTFLH:

TG356.16

基金资助:国家自然科学基金(51335005),中央高校基本科研业务费专项资金(3132016354)

作者简介:

作者简介漆雪莲,女,1991年生,硕士生

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链接本文:

https://www.cjmr.org/CN/10.11901/1005.3093.2016.747 或 https://www.cjmr.org/CN/Y2018/V32/I1/25

图1 KGM分子的红外吸收谱

图2 KGM水合分子

图3 不同浓度溶液的摩擦系数与转速的关系

图4 0.1%溶液在不同转速下的摩擦曲线和三种不同浓度溶液的摩擦曲线(75 r/min)

图5 摩擦试验后摩擦副试样的表面形貌

图6 不同浓度的溶液润滑模型示意图

图7 不同溶液润滑下的摩擦曲线

图8 摩擦试验后摩擦副试样的表面形貌

图9 KGM-硼酸反应示意图

图10 加入硼酸后润滑液的红外吸收谱图

图11 魔芋葡甘聚糖溶液的水基润滑模型

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