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Biodegradable grease composition for aerogenerator

A lubricating grease composition, biodegradable technology, applied in the direction of lubricating composition, petroleum industry, etc., can solve the problems of fretting resistance and wear resistance, and achieve the effect of excellent biodegradability and low temperature characteristics

Active Publication Date: 2016-05-11
NIPPON GREASE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, fretting resistance, use in wind power generators, etc. have not been considered

Method used

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  • Biodegradable grease composition for aerogenerator
  • Biodegradable grease composition for aerogenerator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0069] Each test grease composition was prepared according to the formula shown in Table 1. First, a part of calcium sulfonate (10% by mass of the thickener) and various amines are added to the base oil, and the temperature is maintained at 80 to 90°C. Further, a diisocyanate compound is added, heated to 160°C while stirring, and an extreme pressure agent is added. . Further, it was cooled while stirring, and homogenized by treatment with a homogenizer (at a pressure of about 300 bar) to obtain a base grease. Thereafter, the remaining calcium sulfonate and other additives were added to the base grease, and the grease compositions for each test were prepared by stirring and defoaming. The obtained test grease composition was evaluated as follows. The results are shown in Table 1.

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Abstract

The invention provides a biodegradable grease composition for an aerogenerator. An object of the present invention is to provide a biodegradable grease composition which is excellent in fretting resistance, extreme pressure property, low temperature property, and biodegradability as well, and has a small effect on the environment even if released to a natural environment. The grease composition comprises a base oil composed of an ester oil having a kinematic viscosity at 40 DEG C of 60 to 160 mm 2 / s and a thickener composed of a diurea compound obtained by allowing an amine mixture comprising a 4-8C alicyclic monoamine and a 20-24C aliphatic monoamine to react with a diisocyanate compound, wherein a content molar ratio of the alicyclic monoamine and the aliphatic monoamine in the amine mixture is 7:3 to 9:1, the content of the thickener in a total amount of the base oil and the thickener is 7 to 11 % by mass and a penetration is 265 to 340.

Description

technical field [0001] The present invention relates to a biodegradable grease composition for wind power generators. Background technique [0002] In recent years, protection of the global environment has become an issue in all industries. The use environment of the grease composition is a closed system in most cases, and it is considered that the influence on the natural environment is small. However, biodegradability is also desired for grease compositions used in natural environments in case they are unintentionally released into the natural world due to accidents, leaks, or the like. [0003] Wind turbines are installed outdoors on land or in the ocean. If the grease composition used in the wind turbine leaks and is released into the natural environment, water quality or soil may be polluted. Therefore, biodegradability is also required for grease compositions for wind power generators. [0004] A general wind power generator consists of blades (blades), towers (pill...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/02C10N30/06C10N20/02C10N50/10
CPCC10M169/02C10M2207/2815C10M2207/289C10M2215/1026C10M2215/225C10M2219/046C10M2223/043C10N2020/081C10N2020/02C10N2030/68C10N2030/64C10N2030/06C10N2040/02C10N2050/10C10N2010/04
Inventor 岩松宏树稻田健人
Owner NIPPON GREASE
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