Natural ester transformer oil and preparation method thereof

Abstract

The invention relates to the technical field of transformer oil, in particular to natural ester transformer oil which comprises the following components: natural ester base oil; modified aluminum nitride nano-particles which are prepared by modifying nano-aluminum nitride with a silane coupling agent as shown in a formula (1) and methacrylate, modified silicon nitride nano-particles which are prepared by modifying nano-silicon nitride with the silane coupling agent shown in the formula (1). and other auxiliary agents; the modified aluminum nitride nanoparticles and the modified silicon nitridenanoparticles are added into the natural ester base oil so that the oxidation resistance of the oil product is remarkably improved, viscosity increase, greasy filth generation and the like caused byhigh-temperature oxidation are effectively inhibited, the high-temperature oxidation resistance stability of the transformer oil is remarkably improved, the gassing property of the transformer oil product is excellent, and the oil is obviously superior to natural ester base oil and mineral transformer oil.

Description

technical field

[0001] The invention relates to the technical field of transformer oil, in particular to a natural ester transformer oil and a preparation method thereof. Background technique

[0002] Transformer oil is a kind of mineral oil obtained through distillation and refining from natural petroleum. It is a pure and stable liquid natural hydrocarbon with low viscosity, good insulation and good cooling performance obtained by acid-base refining treatment of lubricating oil fractions in petroleum. mixture. Commonly known as square shed oil, light yellow transparent liquid, relative density 0.895, freezing point <-45°C, mainly composed of three kinds of hydrocarbons, the main component is cycloalkane (accounting for about 80%), and the others are aromatic hydrocarbons and alkanes. In my country, transformer oil includes paraffinic base oil and naphthenic oil. Paraffinic oil is produced in Daqing, and naphthenic oil is produced in Karamay, Xinjiang.

[0003] A good...

Examples

Embodiment 1

[0081] This example provides a natural ester base oil derived from soybean oil:

[0082] -Alkali refining: soybean oil is heated to 40°C, stirred at 30r / min, and 40°C lye is added to the vegetable oil raw material by spraying method. The lye is 0.1% sodium hydroxide solution, and the amount added is 15% of the weight of soybean oil. , then stirred at 90r / min for 30min, then stirred at 30r / min for 25min, raised the temperature to 54°C at 3°C / min, stood still for 12h, took the upper layer of oil and washed it with soft water, and added soft water at 97°C in a uniform spraying method, and added The amount of water is 10% of the oil amount, and the time for adding water is 20 minutes;

[0083] -Decolorization: heat the oil after alkali refining to 100°C, add 5% of oil weight activated carbon and 2.5% activated clay to decolorize for 24 hours under stirring at 60r / min, filter impurities and sediment after decolorization is completed;

[0084] -Deacidification: under vacuum, the de...

Embodiment 2

[0088] The present embodiment provides a kind of natural ester transformer oil, and its formula is as follows:

[0089] The natural ester base oil described in embodiment 1, 97.00%;

[0090] Modified aluminum nitride nanoparticles, 0.50%;

[0091] Modified silicon nitride nanoparticles, 1.25%;

[0092] Metal deactivator benzotriazole (BTA), 0.10%;

[0093] Pour point depressant T602HB, 1.0%;

[0094] Anti-photosensitizer HE1127 light stabilizer, 0.15%.

[0095] According to the formula quantity, add modified aluminum nitride nanoparticles and modified silicon nitride nanoparticles to the natural ester base oil described in Example 1, add metal passivation agent, pour point depressant and anti-light sensitivity agent after mixing, Add molecular sieves and absorb at 135°C for 4 hours to obtain natural ester transformer oil.

[0096] The preparation method of modified aluminum nitride nanoparticles is: get 10g nano aluminum nitride (particle diameter 30nm, density 2.72g / cm ...

Embodiment 3

[0100] This example provides another natural ester transformer oil, its formula and preparation method are basically the same as Example 1, the difference is that no modified aluminum nitride nanoparticles and modified aluminum nitride nanoparticles are added to the natural ester transformer oil in this example. Silicon nitride nanoparticles, the deficiency of which is made up with natural ester base oil.

technical field

[0001] The invention relates to the technical field of transformer oil, in particular to a natural ester transformer oil and a preparation method thereof. Background technique

[0002] Transformer oil is a kind of mineral oil obtained through distillation and refining from natural petroleum. It is a pure and stable liquid natural hydrocarbon with low viscosity, good insulation and good cooling performance obtained by acid-base refining treatment of lubricating oil fractions in petroleum. mixture. Commonly known as square shed oil, light yellow transparent liquid, relative density 0.895, freezing point <-45°C, mainly composed of three kinds of hydrocarbons, the main component is cycloalkane (accounting for about 80%), and the others are aromatic hydrocarbons and alkanes. In my country, transformer oil includes paraffinic base oil and naphthenic oil. Paraffinic oil is produced in Daqing, and naphthenic oil is produced in Karamay, Xinjiang.

[0003] A good...

Examples

Embodiment 1

[0081] This example provides a natural ester base oil derived from soybean oil:

[0082] -Alkali refining: soybean oil is heated to 40°C, stirred at 30r / min, and 40°C lye is added to the vegetable oil raw material by spraying method. The lye is 0.1% sodium hydroxide solution, and the amount added is 15% of the weight of soybean oil. , then stirred at 90r / min for 30min, then stirred at 30r / min for 25min, raised the temperature to 54°C at 3°C / min, stood still for 12h, took the upper layer of oil and washed it with soft water, and added soft water at 97°C in a uniform spraying method, and added The amount of water is 10% of the oil amount, and the time for adding water is 20 minutes;

[0083] -Decolorization: heat the oil after alkali refining to 100°C, add 5% of oil weight activated carbon and 2.5% activated clay to decolorize for 24 hours under stirring at 60r / min, filter impurities and sediment after decolorization is completed;

[0084] -Deacidification: under vacuum, the de...

Embodiment 2

[0088] The present embodiment provides a kind of natural ester transformer oil, and its formula is as follows:

[0089] The natural ester base oil described in embodiment 1, 97.00%;

[0090] Modified aluminum nitride nanoparticles, 0.50%;

[0091] Modified silicon nitride nanoparticles, 1.25%;

[0092] Metal deactivator benzotriazole (BTA), 0.10%;

[0093] Pour point depressant T602HB, 1.0%;

[0094] Anti-photosensitizer HE1127 light stabilizer, 0.15%.

[0095] According to the formula quantity, add modified aluminum nitride nanoparticles and modified silicon nitride nanoparticles to the natural ester base oil described in Example 1, add metal passivation agent, pour point depressant and anti-light sensitivity agent after mixing, Add molecular sieves and absorb at 135°C for 4 hours to obtain natural ester transformer oil.

[0096] The preparation method of modified aluminum nitride nanoparticles is: get 10g nano aluminum nitride (particle diameter 30nm, density 2.72g / cm ...

Embodiment 3

[0100] This example provides another natural ester transformer oil, its formula and preparation method are basically the same as Example 1, the difference is that no modified aluminum nitride nanoparticles and modified aluminum nitride nanoparticles are added to the natural ester transformer oil in this example. Silicon nitride nanoparticles, the deficiency of which is made up with natural ester base oil.

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