Antioxidant additive composite

A composition and additive technology, applied in the field of lubricating oil, can solve the problem of not finding additive formula and other problems, and achieve the effects of highlighting high temperature antioxidant performance, improving antioxidant performance, and improving high temperature antioxidant performance

Inactive Publication Date: 2013-07-03
中国人民解放军徐州空军学院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although organic bismuth compounds have good extreme pressure and anti-wear properties in lubricating oils, in terms of high-temperature oxidation resistance, no additive formulations with good high-temperature anti-oxidation synergistic properties have been found.

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1-3

[0014] Dibutyl bismuth dithiocarbamate, p-, p-diisooctyl diphenylamine (trade name TZ516) and N-phenyl-α-naphthylamine (trade name T531) of different weight percent concentrations were added successively Into 500SN (commercially available) base oil, after heating and dissolving, obtain embodiment 1-3 and evaluate its oxidation resistance. The anti-oxidation performance of the oil is evaluated by differential scanning calorimetry (DSC) experiment, the test conditions: the weight of the test oil sample is 2.00mg, and the oxygen flow rate is 120mL min -1 , in the dynamic oxidation test, the heating rate is 10°C min -1 , in the static oxidation test, the temperature is 180°C. The results of the oxidation experiments are shown in Table 1. As can be seen from the results in the table, bismuth dibutyldithiocarbamate of the present invention and p-'-diisooctyldiphenylamine and N-phenyl-α-naphthylamine have all shown good high temperature oxidation resistance synergistic performance...

Embodiment 4-6

[0018] With the bismuth naphthenate of different weight percentage concentration, 1-(bis(4-octylphenyl) aminomethyl) methyl benzotriazole (trade mark Produced by U.S. R.T.Vanderbilt Company) and 2.0% bis-succinimide (trade name T152) successively join in polyalpha-olefin synthetic base oil (commercially available), after heating and dissolving, obtain embodiment 4-6, evaluate its Antioxidant properties. The anti-oxidation performance of the oil is evaluated by differential scanning calorimetry (DSC) experiment, the test conditions: the weight of the test oil sample is 1.00mg, and the oxygen flow rate is 60mL min -1 , in the dynamic oxidation test, the heating rate is 10°C min -1 . In the static oxidation test, the temperature was 200°C. The results of the oxidation experiments are shown in Table 2. It can be seen from the results in the table that the bismuth naphthenate of the present invention and 1-(bis(4-octylphenyl)aminomethyl)methylbenzotriazole have outstanding hig...

Embodiment 7-10

[0022] Add bismuth naphthenate, bismuth oleate, bismuth octoate, p-, p-diisooctyldiphenylamine and N-phenyl-α-naphthylamine (trade name T531) of different weight percent concentrations to 150SN (market (sold) in the base oil, obtain embodiment 7-10 after heating and dissolving, evaluate its oxidation resistance. The anti-oxidation performance of the oil is evaluated by the thermal oil oxidation test, the test conditions: the weight of the test oil sample is 25g, and the air flow rate is 10L h -1 , the oil temperature is 160°C, and the test time is 72. The viscosity change and acid value of the oxidized oil sample at 40°C were used as the evaluation index of oxidation stability. The smaller the viscosity increase value and the smaller the acid value, the better the oxidation stability. The experimental results are shown in Table 3.

[0023] table 3

[0024]

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PUM

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Abstract

The invention discloses an antioxidant additive composite, belonging to the technical field of lubricating oil. The antioxidant additive composite consists of the following compounds in parts by weight: 0.1-1 part of bismuth compound and 0.05-3 parts of arylamine compound. After the antioxidant additive composite is added into lubricating oil, the initial oxidation temperature and oxidation induction time of the lubricating oil can be greatly increased, and the high-temperature antioxidant property of the lubricating oil can be greatly improved. The antioxidant additive composite can be widely applied to various lubricating oil products including basic lubricating oil or finished lubricating oil, such as internal combustion engine oil, gear oil and the like.

Description

technical field [0001] The invention belongs to the technical field of lubricating oils, in particular to an antioxidant additive composition suitable for various lubricating oils. Background technique [0002] As lubricating additives, organometallic compounds generally have good extreme pressure, anti-wear and anti-oxidation properties in lubricating oils. Among them, metal bismuth, which is the fifth main group element, has a melting point of only 271°C and is easy to form alloys with other metals to protect materials from wear and tear. It exhibits excellent extreme pressure and anti-wear properties. In addition, because the heavy metal element bismuth has no toxicity, it has been widely used in pharmaceuticals (such as compound bismuth aluminate for gastric acid medicine), cosmetics and other fields, which makes organic bismuth compounds have good application prospects as environmentally friendly additives. However, with the rapid development of industrial technology,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M141/08C10M141/06C10N30/10
Inventor 胡建强费逸伟谢凤孙元宝马玉红邱贞慧季峰杜占合
Owner 中国人民解放军徐州空军学院
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