Biodegradable grease composition for wind power generator
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: 2020-10-02
NIPPON GREASE
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- Description
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- Application Information
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Problems solved by technology
However, fretting resistance, use in wind power generators, etc. have not been considered
Method used
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Experimental program
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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 present invention provides a biodegradable grease composition for wind power generators, which has excellent fretting resistance, extreme pressure properties, and low-temperature characteristics, and furthermore, has excellent biodegradability, and has no impact on the environment even when it is released into the natural environment Also less. A biodegradable lubricating grease composition for a wind power generator, comprising: a base oil having a dynamic viscosity of 60-160mm at 40°C 2 / s ester oil; and a thickener comprising reacting a mixed amine comprising an alicyclic monoamine having 4 to 8 carbon atoms and an aliphatic monoamine having 20 to 24 carbon atoms and a diisocyanate compound. In the obtained diurea compound, the molar ratio of the alicyclic monoamine and the aliphatic monoamine in the mixed amine is 7:3 to 9:1, and the content of the thickener in the total amount of the base oil and the thickener is 7 ~11% by mass, the consistency is 265~340.
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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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