Preparing method for 1-hexyl-3-methylimidazole hexafluorophosphate ionic liquid and fire resistant hydraulic oil with the same

Abstract

The invention belongs to the field of fire resistant hydraulic oil, relates to environment-friendly total-synthesis fire resistant hydraulic oil, in particular to a preparing method for 1-hexyl-3-methylimidazole hexafluorophosphate ionic liquid and fire resistant hydraulic oil with the same. The preparing method for the 1-hexyl-3-methylimidazole hexafluorophosphate ionic liquid mainly includes the steps of 1-hexyl-3-methylimidazole preparing and hexafluorophosphate ionic liquid preparing. The fire resistant hydraulic oil is prepared in the mode that the ionic liquid, an extrcme pressure anti-wear additive, an antioxidant, a preservative, a pour point depressant and an antifoaming agent are mixed. The fire resistant hydraulic oil synthesized with the method is high in flash point and fire point, low in evaporation loss, high in viscosity index, excellent in lubricating performance, nontoxic, biodegradable and good in material applicability.

Description

technical field [0001] The invention belongs to the field of flame retardant hydraulic oil, relates to green and environmentally friendly fully synthetic flame retardant hydraulic oil, in particular to the preparation of a 1-hexyl-3-methylimidazolium hexafluorophosphate ionic liquid and the flame retardant hydraulic oil containing the ionic liquid . Background technique [0002] With the continuous development of modern hydraulic technology, some hydraulic equipment often work under high pressure and high temperature (for example, some hydraulic systems in iron and steel plants often come into contact with high temperature bodies or even open flames), so the requirements for flame resistance are put forward for the hydraulic oil used. Thus promoting the research, development and use of fire-resistant hydraulic oil. Before the 1970s, countries devoted themselves to the development of water-containing emulsion, water-ethylene glycol type, non-aqueous phosphate ester type, and...

AI Technical Summary

Problems solved by technology

Before the 1970s, countries devoted themselves to the development of water-containing emulsion, water-ethylene glycol type, non-aqueous phosphate ester type, and chlorinated hydrocarbon type fire-resistant hydraulic oil. Although these hydraulic oils are still the main body of hydraulic oil, due to It is limited by factors such as operating temperature, operating pressure, material applicability, safety, environmental protection, etc., and can no longer meet the needs of modern industrial development.

For example, the use temperature of water-containing emulsion is limited to below 50°C, and the use temperature of water-glycol type fire-resistant hydraulic oil is only 65°C. At the same time, the use pressure of water-containing fire-resistant hydraulic fluid is generally lower than 10MPa, and the lubrication performance Poor, unable to meet the requirements of hydraulic systems under high temperature and high pressure conditions

Due to the constraints of material applicability, toxicity and increasingly stringent environmental protection, the use of non-aqueous phosphate ester and chlorinated hydrocarbon fire-resistant hydraulic oils is increasingly restricted.

Images