Oil hydrolytic stability enhancer and hydraulic oil composition containing same
A technology of hydraulic oil composition and stability, which is applied in the field of oil hydrolysis stability enhancer and hydraulic oil composition containing the enhancer, which can solve the problems of unqualified hydrolysis stability of hydraulic oil and achieve good hydrolysis stability , Improve the effect of hydrolysis stability
Active Publication Date: 2013-05-08
CHINA PETROLEUM & CHEM CORP
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Problems solved by technology
[0004] To improve the hydrolytic stability of hydraulic oil, the additives in hydraulic oil are very important. If the additives are not well balanced and compatible, the hydrolytic stability of hydraulic oil will be unqualified
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[0035] The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
[0036] The components of the hydraulic oil composition in the embodiments are specifically as follows (content is weight percentage):
[0037] Formula composition
[0038] Demulsibility, min
[0039] Remarks: 4a is unqualified. There is a standard version for judging the appearance of copper sheets, which have the following grades 1a, 1b, 2a, 2b, 2c, 2d, 2e, 3a, 3b, 4a, etc., 1a is the best, and it gets worse sequentially from 1a. The hydraulic oil standard stipulates that the requirement does not exceed 1, that is, it can only be 1a and 1b.
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Abstract
The invention provides an oil hydrolytic stability enhancer which is composed of the following components by weight parts: 1-7 parts of a benzotriazole derivative metal deactivator, 1-7 parts of a thiadiazole derivative metal deactivator and 1-3 parts of a sulfonic acid antirust agent. The oil hydrolytic stability enhancer provided by the invention can be used for hydraulic oil compositions so as to improve hydrolytic stability of the hydraulic oil compositions; and the hydraulic oil compositions prepared from the enhancer has characteristics of wear resistance, corrosion resistance, oxidation resistance and demulsification existing in traditional hydraulic oil, and has good hydrolytic stability at the same time.
Description
technical field [0001] The invention relates to a lubricating oil additive, in particular to an oil product hydrolysis stability enhancer and a hydraulic oil composition containing the enhancer. Background technique [0002] The product standard of hydraulic oil requires the hydrolysis stability test of hydraulic oil, and requires that the weight loss of the copper sheet after the test is less than 0.2mg, and the appearance of the copper sheet is qualified. [0003] If the hydrolytic stability of the hydraulic oil is unqualified, the oil will cause corrosion and wear of the hydraulic components under the working conditions of water during use, resulting in damage to the hydraulic components and the hydraulic system. Therefore, it is necessary to improve the hydrolytic stability of hydraulic oils. [0004] To improve the hydrolytic stability of hydraulic oil, the additives in hydraulic oil are very important. If the additives are not well balanced and compatible, the hydroly...
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IPC IPC(8): C10M141/08C10M161/00C10N40/08
Inventor 陈惠卿汤涛李万英王向阳甘炜张春辉韦安柱贾睿薛玉苓
Owner CHINA PETROLEUM & CHEM CORP
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