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Environmentally friendly lubricating grease composition and preparation method thereof

A lubricating grease composition, an environment-friendly technology, applied in the direction of lubricating composition and the like, can solve the problems of small use temperature range, limited application range, poor oxidation stability, etc., and achieve good high and low temperature characteristics, good application prospects, and good biodegradation. sexual effect

Inactive Publication Date: 2015-07-29
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the disadvantages of vegetable oils are poor oxidation stability and low temperature performance, the use temperature range is small, usually the use temperature is 60 ℃, the highest is 100 ℃, which greatly limits its application range

Method used

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  • Environmentally friendly lubricating grease composition and preparation method thereof
  • Environmentally friendly lubricating grease composition and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Embodiment 1 (prefabricated soap method)

[0032] First, add 15kg of lauryl hydroxystearic acid and 20kg of water into the normal pressure fat kettle, raise the temperature to 80-100°C, add a calculated amount of 2.2kg of lithium hydroxide aqueous solution, saponify for 1 hour, and then dry it at 110°C 30h made lauryl hydroxy stearate lithium soap.

[0033] Put 38.1kg of dioctyl sebacate oil and 11kg of lithium lauryl stearate soap into the fat-making kettle, mix and heat up to react, raise the temperature to 220°C, transfer the kettle to the blending kettle, and add the remaining 50.9kg of decane Dioctyl dioate oil. Cycle cooling, add 0.5kg of diisooctyl diphenylamine (V81), 0.5kg of zinc naphthenate (T704), 0.2kg of benzotriazole (T706), 1.0kg of potassium borate, 0.5kg The nano-calcium carbonate was cooled to 120° C. for shearing and grinding for 30 minutes, and the grease was packaged out of the kettle to obtain the finished product. The distribution ratio and ph...

Embodiment 2

[0034] Embodiment 2 (prefabricated soap method)

[0035] The preparation method is the same as in Example 1, except that potassium borate is not added, but the addition of nanometer calcium carbonate is 1.5kg. The distribution ratio and physical and chemical properties of each component are shown in Table 1.

Embodiment 3

[0036] Embodiment 3 (prefabricated soap method)

[0037]The preparation method is the same as that in Example 1, except that nano-calcium carbonate is not added, but the addition of potassium borate is 1.5 kg. The distribution ratio and physical and chemical properties of each component are shown in Table 1.

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Abstract

An environmentally friendly lubricating grease composition comprises base grease composed of base oil and a thickener, and an additive, wherein the base oil is selected form synthetic oil base oil, the thickener is a lithium soap or composite lithium soap thickener, and the additive at least contains an extreme pressure anti-wear agent selected from borate and a nanometer extreme pressure agent, an antioxidant and an antirust agent. The above lubricating grease has the advantages of good biodegradability, good high and low temperature characteristics, good extreme pressure anti-wear performances, and low starting torque and running torque, and is suitable for being used in railway switch machines.

Description

technical field [0001] The invention relates to an environment-friendly lubricating grease composition and a preparation method. Background technique [0002] The railway switch machine is mainly used in the conversion of railway turnouts, and it is the key equipment to ensure the normal operation of trains. When the switch machine is working, the gear on the main shaft drives the lower rack, so that the moving rod is extended or pulled in, which drives the switching point rail of the switch and can fix the point rail. The lubricating grease used for railway switch machines is not subject to geographical restrictions, and can be used smoothly in the vast areas of humid tropics, dry tropics, temperate zones, and frigid zones. It needs to have excellent high and low temperature characteristics and good water resistance. , especially the low temperature sometimes requires -60°C; when the railway switch machine is squeezed, the external force reaches 3 to 3.5 tons, and the grea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/06C10M177/00
Inventor 刘大军孙洪伟潘卓段庆华
Owner CHINA PETROLEUM & CHEM CORP
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