Application of Chlorinated Paraffin-based Supported Ionic Liquids in Extreme Pressure Antiwear Additives
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摘要: 通过分子结构设计，将甲基咪唑引入氯化石蜡（CP）分子链中，合成氯化石蜡基支载型离子液体（CP-mimCl），并通过与基础油复配应用于极压抗磨领域。结果表明，热稳定性方面，最大分解温度CP-mimCl提高24 ℃，最大分解速率降低3.2%/min，并且表现出分解速率较低的特点；极压抗磨性能方面，不同载荷下CP-mimCl复合混合液的平均磨斑直径较CP复合混合液降低6.8%、7.7%、7.3%，摩擦系数降低36.2%，平均pB值增大15.7%；SEM结果表明，CP-mimCl复合混合液的磨斑形貌较CP复合混合液更为致密和细腻。Abstract: Methylimidazole was grafted onto the molecular chain of chlorinated paraffin (CP) to synthesize chlorinated paraffin-based supported ionic liquids (CP-mimCl) through molecular structural design, which was used in extreme pressure and antiwear field by compounding with base oil. The experiment results showed that the maximum decomposition temperature of CP-mimCl increased by 24 ℃, the maximum decomposition rate decreased by 3.2%/min, and also showed the characteristics of uniform weightlessness. Compared with CP composite solution, the average wear spot diameter of CP-mimCl composite solution decreased by 6.8%, 7.7%, 7.3% under different loads, friction coefficient decreased by 36.2%, and the average pB increased by 15.7%. The results of SEM showed that the wear spot morphology by CP-mimCl composite solution was more dense and delicate than that by CP composite solution.
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Key words:
- structural design /
- decomposition /
- antiwear additives /
- extreme pressure /
- experiment
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表 2 仪器名称及型号
仪器名称 型号 傅里叶红外测试仪(FTIR) IRAffinity-1S 热重分析仪(TGA) TGA550 扫描电子显微镜(SEM) S-3400N 四球摩擦试验机 SGW-10A 
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表 3 甲基咪唑改性氯化石蜡支载型离子液体的热重参数
名称 CP CP-mimCl 初始分解温度/℃ 147 144 最大分解温度/℃ 291 315 最大分解速率/(%·min-1) 4 0.8 失重50%温度/℃ 294 319 370 ℃残余量/% 13.9 31.9
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