Shock absorber oil composition

A technology of shock absorber oil and composition, which is applied in lubricating composition, petroleum industry, etc., and can solve the problems of anti-oxidation and anti-rust performance, anti-wear performance, anti-oxidation performance and viscosity-temperature performance that need to be improved. and other problems, to achieve excellent anti-friction and anti-wear properties, good anti-oxidation and anti-rust properties, and a wide range of applications

Active Publication Date: 2015-06-24
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, Chinese patent CN 101993766A discloses a fully synthetic high-viscosity shock absorber oil. This product is excellent in low-temperature performance and anti-friction and anti-wear performance, but it does not mention anti-oxidation performance, and its viscosity index has yet to be determined. Further improvement (the viscosity index of the products in the published patents does not exceed 300); Chinese patent CN 101724500A discloses an all-weather shock absorber oil, which has the characteristics of high viscosity index and excellent low temperature performance, but does not mention anti Oxygen anti-rust performance and anti-wear performance and other indicators; U.S. Patent US 4634543 discloses a shock absorber oil with excellent anti-wear performance, but it does not mention the viscosity-temperature performance; Japanese Patent JP 03285989 discloses a fully synthetic Type shock absorber oil, its production cost is higher; The shock absorber oil disclosed in Chinese patent CN 1343578A and CN 101486944 has good low-temperature performance and anti-friction and anti-wear performance, but still needs to be improved aspect viscosity-temperature performance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1~5

[0035] Prepare shock absorber oil of the present invention according to Table 1 formula.

[0036] The formula of table 1 embodiment 1~5

[0037]

[0038]

[0039]Among them, the pour point of Nynas NS 3 is -65°C, the content of dicycloalkanes is 45%, the content of tricycloalkanes is 27%, and the content of total naphthenes is 88%; the pour point of Nynas T 4 is -65°C, and the content of dicycloalkanes is 44%. The tricycloalkane content is 26%, and the total cycloalkane content is 85%; dodecyl polymethacrylate is selected from RohMaxVX 7-310; phosphobisoctyl zinc salt is selected from T203 of Liaoning Tianhe Fine Chemical Factory; The primary alkyl zinc salt of phosphoethylhexyl is selected from RheinChemieRC3080; the secondary primary alkyl zinc salt of thiophosproxine is selected from T205 of Liaoning Tianhe Fine Chemical Factory; the octadecylamine salt of benzotriazole is selected from T406 of Nanjing Ningjiang Chemical Factory; 2, 6-Di-tert-butyl-α-dimethylamino-p-...

Embodiment 4

[0042] Use national or industry standard analytical methods to test the performance of the formula products in Examples 1-5, and compare them with the formula products in Example 3 of the patent CN 1343578A as a comparative example. The results are shown in Table 2.

[0043] The comparison of table 2 embodiment 1~5 product performance data and comparative example

[0044]

[0045] After analysis, the viscosity index of the shock absorber oil obtained in Examples 1-5 is about 350, and the low-temperature apparent viscosity is less than 500mPas, and the above two indicators are obviously better than those of the comparative example; in addition, the maximum non-jamming load is significantly greater than that of the comparative example , illustrating that the product of the present invention has better wear resistance than comparative examples. The analysis results show that the shock absorber oil of the present invention has extremely excellent viscosity-temperature performa...

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Abstract

The invention provides a shock absorber oil composition which consists of the following components in percentage by weight: 50-90% of poly alpha-olefin synthetic oil, 10-50% of cycloalkyl mineral oil, 8-15% of a polymethacrylate viscosity index modifier, 0.5-5% of an antiwear agent, 0.1-5% of an antioxidant, 0.01-2% of a rust-preventing agent and 0.001-0.05% of an anti-foaming agent. The shock absorber oil composition provided by the invention has the beneficial effects that compared with common shock absorber oil, the shock absorber oil provided by the invention has remarkable viscosity-temperature performance (the viscosity index is greater than 325), excellent low temperature performance (the pour point is less than -50 DEG C), excellent anti-foaming performance, good anti-oxidizing and rust-preventing performances and excellent antiwear performance. Meanwhile, the shock absorber oil composition has good adaptability to rubber. The product provided by the invention can be used for automotive, train and locomotive shock absorbers, and can satisfy the using demands such as all weather, long service life and universality.

Description

technical field [0001] The invention relates to a lubricating oil composition, in particular to a lubricating oil composition with outstanding viscosity-temperature performance, excellent low-temperature performance, excellent anti-foaming performance, good anti-oxidation and anti-rust performance and excellent anti-wear performance. Shock oil. Background technique [0002] The shock absorber is a key component of the vehicle, shouldering many important performances of the vehicle, elastically supporting the body and load mass, thus determining the carrying capacity of the vehicle; it can attenuate the vibration caused by uneven roads to the body and passengers (Attenuate amplitude, frequency, noise), reduce the inertial force on the body; ensure that the wheels can grip the ground at any time, improve the steering and braking function of the vehicle, and ensure the smoothness and comfort of the vehicle; improve the grounding of the vehicle and avoid the Collide with the ax...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M169/04C10N30/06C10N30/10C10N30/12C10N30/18
Inventor 杜雪岭陈惠卿汤涛李万英韦安柱贾睿水琳曹玉发王向阳夏鹏薛玉苓艾立雯
Owner CHINA PETROLEUM & CHEM CORP
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