A kind of preparation method of nonthion phosphorus oil-soluble organic molybdenum additive

Abstract

The invention provides a method for preparing non-sulfur phosphorus oil-soluble organic molybdenum additives, which comprises the following steps: (1) One-step preparation of alkanolamides: pour the raw material containing alkyl acid glycerides into a container, and heat up to 80°C ~180°C, add organic amine to the container, keep the temperature and continue the reflux reaction for 2h~8h to obtain alkanolamide; (2) Preparation of nonthion phosphorus oil-soluble organic molybdenum: dissolve the alkanolamide in the organic solvent in the container, heat up To 80 ℃ ~ 180 ℃, add ammonium molybdate aqueous solution into the reaction system, keep the temperature and continue the reflux reaction for 2h ~ 8h, filter out impurities, and distill under reduced pressure to remove the organic solvent to obtain non-sulfur phosphorus oil-soluble organic molybdenum additive. The preparation method provided by the invention optimizes the process conditions, does not require high temperature and high pressure or vacuum conditions, and reduces reaction loss. The prepared non-sulfur phosphorus oil-soluble organic molybdenum additive has good stability, oil solubility and corrosion resistance. Reach the existing product performance level, and even have better performance in anti-friction performance.

Description

technical field [0001] The invention belongs to the field of lubricating oil additive preparation, and in particular relates to a preparation method of non-sulfur phosphorus oil-soluble organic molybdenum additive. Background technique [0002] Friction and wear refers to the phenomenon of continuous loss caused by physical or chemical effects on the surfaces of two objects in contact during the process of relative motion friction. Mechanical wear is one of the main failure modes of mechanical motion pairs. Reducing friction and wear in mechanical motion is one of the main means to improve mechanical efficiency, reduce energy consumption, and prolong mechanical life. In the loss of energy in the world, more than half of it is consumed to overcome the friction and wear of the interaction between the dual surfaces of mechanical parts. Therefore, in order to improve economic benefits and save energy, the majority of scholars are actively conducting research on anti-friction an...

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Problems solved by technology

Chinese patent CN102453589A reports a nonthion-phosphorus oil-soluble organic molybdenum additive, which has good structural stability and anti-friction performance; a total of five raw materials are used in the overall preparation process: castor oil, oleic acid, diethanolamine, hydroxyethyl Ethylenediamine, ammonium molybdate, the preparation process requires a negative pressure environment, the reaction time is more than 13h, the process is more cumbersome, and the reaction pressure in the preparation process needs to be continuously adjusted

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