Thermo-physical characterization and colloidal stability assessment of bio-enhanced coconut oil-based green cutting fluids

IF 2.2 4区化学 Q3 CHEMISTRY, PHYSICAL

Colloid and Polymer Science Pub Date : 2024-11-25 DOI:10.1007/s00396-024-05354-8

Umair Ashraf, Sheikh Shahid Saleem

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Abstract

Green cutting fluids (GCF) offer a desirable alternative to conventional synthetic cutting fluid by mitigating the negative effects on the environment while offering similar performance. This study aims to replace all the mineral-based contents of cutting fluid with eco-friendly plant-based alternatives. GCFs (B01 to B07) were formulated with coconut oil base, cocamidopropylbetaine (CAPB) as emulsifying agent with garlic oil as an EP/anti-wear additive and almond oil as a corrosion inhibitor. Characterization of formulated GCFs was carried out using FT-IR (Fourier transform infrared) and DSC (differential scanning calorimetry). Thermo-analytical studies provide important insights into thermo-physical characteristics influencing cutting performance. DSC results indicate a minor dip in the pour point of formulated GCFs. An overall increase in density, thermal conductivity and flash point of GCFs was observed. B03 showed an increase of 26.42% in thermal conductivity in comparison with virgin coconut oil (CO). The maximum increase of 12.03% in flash point was observed in case of B04. Excellent thermal stability was demonstrated by B02, B03 and B04, while most stable emulsions were observed for B03. Formulated GCFs exhibited significant improvement in corrosion inhibition. Considering overall enhancement in the properties of the formulated GCFs, the findings position blends B02, B03 and B04 as promising cutting-fluid replacements with a potential performance enhancement.

Graphical Abstract

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生物增强椰子油基绿色切削液的热物理特性和胶体稳定性评价

绿色切削液（GCF）是传统合成切削液的理想替代品，在提供类似性能的同时减轻了对环境的负面影响。这项研究旨在用环保的植物基替代品取代切削液中的所有矿物基成分。以椰子油为基料，椰油酰胺丙基甜菜碱（CAPB）为乳化剂，大蒜油为EP/抗磨添加剂，杏仁油为缓蚀剂配制gcf （B01 ~ B07）。用FT-IR（傅里叶变换红外）和DSC（差示扫描量热法）对配制的gcf进行表征。热分析研究提供了影响切削性能的热物理特性的重要见解。DSC结果表明，配制gcf的倾点略有下降。观察到gcf的密度、导热系数和闪点总体增加。与初榨椰子油（CO）相比，B03的导热系数提高了26.42%。B04的闪点最大提高了12.03%。B02、B03和B04表现出优异的热稳定性，B03表现出最稳定的乳状液。配制的gcf具有显著的缓蚀性能。考虑到配制gcf的整体性能增强，研究结果表明，B02、B03和B04是有前景的切削液替代品，具有潜在的性能增强潜力。图形抽象

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来源期刊

Colloid and Polymer Science 化学-高分子科学

CiteScore

4.60

自引率

4.20%

发文量

111

审稿时长

2.2 months

期刊介绍： Colloid and Polymer Science - a leading international journal of longstanding tradition - is devoted to colloid and polymer science and its interdisciplinary interactions. As such, it responds to a demand which has lost none of its actuality as revealed in the trends of contemporary materials science.