CN104046408A - Nanoparticles transformer oil with strong oxidation resistance and preparation method thereof - Google Patents

Abstract

The invention discloses aluminum nitride nanoparticles transformer oil with strong oxidation resistance. The transformer oil is characterized by comprising the following raw materials in parts by weight: 1000-1200 parts of naphthenic base oil, 2-4 parts of aluminum nitride, 0.2-0.5 part of 2,6-di-tert-butylcatechol, 0.2-0.5 part of 2,6-di-tert-butyl-p-cresol, 0.2-0.5 part of disodium hydrogen phosphate, 0.2-0.5 part of potassium sodium tartrate, 2-4 parts of boron phosphide, 2-4 parts of boron nitride, 0.2-0.5 part of ascorbic acid and 0.4-0.8 part of additives; since aluminum nitride, boron nitride and boron phosphide nanoparticles are added into the transformer oil, the thermal conductivity, stability and insulation performances are enhanced; the oxidation resistance, moisture resistance and water resistance of the transformer oil are enhanced by adding additives; the ethanol ball-milling method for preparing nanoparticles is simple in equipment and easily operated; the transformer oil disclosed by the invention is clear and free of impurities and has the advantages of high thermal conductivity, stability, moisture-aging resistance, oxidation resistance and the like, the service life of the transformer oil is greatly prolonged and the potential risk factors are reduced.

Description

Nanoparticle transformer oil that a kind of oxidation-resistance is strong and preparation method thereof

Technical field

The present invention relates to chemical field, relate in particular to nanoparticle transformer oil that a kind of oxidation-resistance is strong and preparation method thereof.

Background technology

The transformer oil side of being commonly called as canopy oil, light yellow transparent liquid, is a kind of fraction products of oil, its main component is alkane, cycloparaffin series's stable hydrocarbon, the compounds such as aromatic series unsaturated hydrocarbons, relative density 0.895.Zero pour <-45 DEG C.Transformer oil has the insulation strength more much higher than air.Transformer oil is filled in during insulating material soaks, and not only can improve insulation strength, but also can make insulating material avoid the erosion of moisture.The heat producing when transformer operation makes to rise near the oily expanded by heating of iron core and winding, and because the specific heat of transformer oil is large, by the convection current up and down of oil, heat sheds by scatterer, ensures that transformer normally moves.On the on-load voltage regulating switch of oil switch and transformer, contact can produce electric arc while switching, due to transformer oil good heat conductivity, and under the high temperature action of electric arc, can divide and touch a large amount of gas, produce larger pressure, thereby improved the arc extinction performance of medium, electric arc is extinguished very soon.It is exactly more than the effect of transformer oil insulation, heat radiation and arc extinguishing.

Electric property and the physicochemical property of moisture to dielectric has great harm, first moisture can reduce the voltage breakdown of oil product, also can promote organic acid to the effect of the corrosion of metal such as copper, iron, the saponified meeting producing worsens oily dielectric dissipation factor, increase oily moisture absorption, and oily oxidation is played to katalysis.It is generally acknowledged that the dry oil degradation speed of oil ratio of making moist will increase by 2-4 times, so people give great concern to the existence of the water in transformer oil for a long time.Because transformer oil has certain water-absorbent, we do not fall moisture at eliminating, only in transformer oil, add the obvious antioxidant of effect to prevent the oxidation catalysis effect that moisture produces oil.

Aluminium nitride thermal conductivity is good, thermal expansivity is little, electrical insulator, dielectric properties are good, boron nitride Heat stability is good, wear resistance is good and chemical stability is strong, boron phosphide BP resistance to oxidation, high pressure resistant, acid-alkali-corrosive-resisting, good heat shock resistance material, so the present invention selects aluminium nitride, boron nitride and boron phosphide BP to add in transformer oil as nano material.We choose several antioxidants and combine use, and the water resistant that strengthens transformer oil is divided, anti-oxidant function.

Summary of the invention

The object of this invention is to provide nanoparticle transformer oil that a kind of oxidation-resistance is strong and preparation method thereof.

In order to realize the object of the invention, the present invention implements by the following technical programs:

The nanoparticle transformer oil that a kind of oxidation-resistance is strong, raw material by following weight part is made: naphthenic base oils 1000-1200, aluminium nitride 2-4,2,6-di-t-butylcatechol 0.2-0.5,2,6 ditertiary butyl p cresol 0.2-0.5, Sodium phosphate dibasic 0.2-0.5, Seignette salt 0.2-0.5, boron phosphide BP 2-4, boron nitride 2-4, xitix 0.2-0.5, auxiliary agent 0.4-0.8;

Described auxiliary agent is made up of the raw material of following weight part: N, N'-di-sec-butyl-p-phenyl enediamine 0.5-1.0, butylated hydroxy anisole 0.5-1.0, N, N'-bis-salicylidene propylene diamine 1-2,2-phosphate-1,2,4-butane tricarboxylate 1-2, atlapulgite 2-3, cristobalite powder 4-6, Sodium orthomolybdate 1-2, the smooth mono-laurate 1-2 of sorb, naphthenic base oils 80-100; Preparation method is: Sodium orthomolybdate, butylated hydroxy anisole, cristobalite powder and atlapulgite blend are ground to obtain to nano-powder, by N, N'-di-sec-butyl-p-phenyl enediamine, N, N'-bis-salicylidene propylene diamine, 2-phosphate-1,2,4-butane tricarboxylate and naphthenic base oils mixing and stirring, then the powder of above-mentioned grinding is added in mixing oil, finally add the smooth mono-laurate of sorb to stir 20-50 minute under 1200-1400 rev/min.

The nanoparticle transformer oil that oxidation-resistance of the present invention is strong, made by following concrete steps:

(1) aluminium nitride, boron phosphide BP, boron nitride, Sodium phosphate dibasic and Seignette salt are added in ball mill, add again the dehydrated alcohol of 10 ~ 15 times, at 500-700 rev/min of lower ball milling 60-90 hour, after end, this liquid rotating is moved to revolve and steam in instrument, revolve to steam and remove ethanol and can obtain dry nano-powder;

(2) naphthenic base oils is heated to 260 ~ 280 ° of C, add successively respectively nano-powder dry in (1), 2,6-di-t-butylcatechol, xitix, 2,6-ditertbutylparacresol and auxiliary agent, under 1200-1400 rev/min of high speed dispersor, stir after 0.5-1.0 hour, be incubated 2 ~ 3 hours;

(3) transformer oil in (2) is cooled to after room temperature, filters, obtain the transformer oil that contains aluminium nitride, boron nitride and boron phosphide BP nanoparticle after removing impurity.

Aluminium nitride, boron nitride and the boron phosphide BP nanoparticle adding in transformer oil of the present invention strengthened its thermal conductivity, stability and insulativity; The auxiliary agent adding has strengthened oxidation-resistance, moistureproofness and the water-repellancy of transformer oil; Use dehydrated alcohol ball milled to prepare nanoparticle, equipment used is simple, easy to operate; The invention has the advantages that raw materials used simple and easy to get, the transformer oil clarification inclusion-free of invention, have the advantages such as very high thermal conductivity, stability, moistureproof resistance to deterioration, oxidation-resistance, this has extended the work-ing life of transformer oil greatly, has reduced the Hazard Factor that exist.

Specific embodiments

Below by specific examples, the present invention is described in detail.

The nanoparticle transformer oil that a kind of oxidation-resistance is strong, by following weight part (kilogram) raw material make: naphthenic base oils 1200, aluminium nitride 2,2,6-di-t-butylcatechol 0.2,2,6 ditertiary butyl p cresol 0.3, Sodium phosphate dibasic 0.2, Seignette salt 0.3, boron phosphide BP 2, boron nitride 2, xitix 0.3, auxiliary agent 0.7;

Described auxiliary agent by following weight part (kilogram) raw material make: N, N'-di-sec-butyl-p-phenyl enediamine 1.0, butylated hydroxy anisole 0.5, N, N'-bis-salicylidene propylene diamine 1,2-phosphate-1,2,4-butane tricarboxylate 1, atlapulgite 3, cristobalite powder 4, Sodium orthomolybdate 1, the smooth mono-laurate 1 of sorb, naphthenic base oils 80; Preparation method is: Sodium orthomolybdate, butylated hydroxy anisole, cristobalite powder and atlapulgite blend are ground to obtain to nano-powder, by N, N'-di-sec-butyl-p-phenyl enediamine, N, N'-bis-salicylidene propylene diamine, 2-phosphate-1,2,4-butane tricarboxylate and naphthenic base oils mixing and stirring, then the powder of above-mentioned grinding is added in mixing oil, finally add the smooth mono-laurate of sorb to stir 20-50 minute under 1200-1400 rev/min.

The nanoparticle transformer oil that oxidation-resistance of the present invention is strong, made by following concrete steps:

(1) aluminium nitride, boron phosphide BP, boron nitride, Sodium phosphate dibasic and Seignette salt are added in ball mill, add again the dehydrated alcohol of 10 ~ 15 times, at 500-700 rev/min of lower ball milling 60-90 hour, after end, this liquid rotating is moved to revolve and steam in instrument, revolve to steam and remove ethanol and can obtain dry nano-powder;

(2) naphthenic base oils is heated to 260 ~ 280 ° of C, add successively respectively nano-powder dry in (1), 2,6-di-t-butylcatechol, xitix, 2,6-ditertbutylparacresol and auxiliary agent, under 1200-1400 rev/min of high speed dispersor, stir after 0.5-1.0 hour, be incubated 2 ~ 3 hours;

(3) transformer oil in (2) is cooled to after room temperature, filters, obtain the transformer oil that contains aluminium nitride, boron nitride and boron phosphide BP nanoparticle after removing impurity.

Transformer oil work voltage breakdown of the present invention is for exceeding 75KV, and specific inductivity is that 2.26,90 ° of C current displacement angle tangent values are 0.0001, and volume specific resistance is 6 × 10 ¹²Ω m, other performance index all meet transformer oil GB2536-90 quality standard, use transformer oil of the present invention can have good moistureproof heat radiation, anti-oxidant, aging-resistant function, increase the service life.

Claims (2)

1. the nanoparticle transformer oil that oxidation-resistance is strong, it is characterized in that, raw material by following weight part is made: naphthenic base oils 1000-1200, aluminium nitride 2-4,2,6-di-t-butylcatechol 0.2-0.5,2,6 ditertiary butyl p cresol 0.2-0.5, Sodium phosphate dibasic 0.2-0.5, Seignette salt 0.2-0.5, boron phosphide BP 2-4, boron nitride 2-4, xitix 0.2-0.5, auxiliary agent 0.4-0.8;

Described auxiliary agent is made up of the raw material of following weight part: N, N'-di-sec-butyl-p-phenyl enediamine 0.5-1.0, butylated hydroxy anisole 0.5-1.0, N, N'-bis-salicylidene propylene diamine 1-2,2-phosphate-1,2,4-butane tricarboxylate 1-2, atlapulgite 2-3, cristobalite powder 4-6, Sodium orthomolybdate 1-2, the smooth mono-laurate 1-2 of sorb, naphthenic base oils 80-100; Preparation method is: Sodium orthomolybdate, butylated hydroxy anisole, cristobalite powder and atlapulgite blend are ground to obtain to nano-powder, by N, N'-di-sec-butyl-p-phenyl enediamine, N, N'-bis-salicylidene propylene diamine, 2-phosphate-1,2,4-butane tricarboxylate and naphthenic base oils mixing and stirring, then the powder of above-mentioned grinding is added in mixing oil, finally add the smooth mono-laurate of sorb to stir 20-50 minute under 1200-1400 rev/min.

2. the nanoparticle transformer oil that oxidation-resistance is strong, is characterized in that, this preparation method comprises the following steps:

(1) aluminium nitride, boron phosphide BP, boron nitride, Sodium phosphate dibasic and Seignette salt are added in ball mill, add again the dehydrated alcohol of 10 ~ 15 times, at 500-700 rev/min of lower ball milling 60-90 hour, after end, this liquid rotating is moved to revolve and steam in instrument, revolve to steam and remove ethanol and can obtain dry nano-powder;

(2) naphthenic base oils is heated to 260 ~ 280 ° of C, add successively respectively nano-powder dry in (1), 2,6-di-t-butylcatechol, xitix, 2,6-ditertbutylparacresol and auxiliary agent, under 1200-1400 rev/min of high speed dispersor, stir after 0.5-1.0 hour, be incubated 2 ~ 3 hours;

(3) transformer oil in (2) is cooled to after room temperature, filters, obtain the transformer oil that contains aluminium nitride, boron nitride and boron phosphide BP nanoparticle after removing impurity.