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A kind of insulating type hydraulic oil composition and preparation method thereof
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A hydraulic oil composition, composition technology, applied in the direction of lubricating composition, petroleum industry, etc., to achieve the effects of good extreme pressure and anti-wear properties, good electrical insulation performance
Active Publication Date: 2020-03-31
CHINA PETROLEUM & CHEM CORP
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Conventional industrial hydraulic oils often cannot meet this requirement. Therefore, an insulating hydraulic oil composition is required, which has excellent viscosity-temperature performance, extreme pressure and anti-wear properties, thermal stability, hydrolytic stability and oxidation stability, etc. , can ensure the normal and stable operation of the hydraulic system, and at the same time have good insulation performance and high breakdown voltage, meeting the use and safety performance requirements of the hydraulic system of insulating aerial work vehicles and similar equipment
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Embodiment 1-6
[0033] The components of the insulating hydraulic oil composition in the examples are shown in Table 1, and the preparation process is as follows:
[0034] (1) First mix the mineral base oil in an appropriate proportion and heat it to 40°C, then add antioxidant, viscosity index improver, extreme pressure antiwear agent, rust inhibitor, metal deactivator, detergent and dispersant in sequence, and stir After uniformity, antifoaming agent is added to obtain a mixture;
[0035] (2) The mixture is subjected to vacuum heating filtration at a vacuum degree of 0.098Mpa at 53°C and multi-stage filtration with a precision of 5 microns and 3 microns in sequence, and then is dried under normal pressure at 55°C to obtain the obtained product.
[0036] Table 1: each component content (%) of embodiment 1-6
[0037]
[0038]In the above examples, the base oils HVI Ib 150, HVII4, and HVI III6 are Sinopec base oils, and the additives IRGANOX L57, IRGANOX L115, TPPT, Irgalube 349, and IRGAME...
Embodiment 7
[0043] Compared with Example 3, the only difference is that it is prepared according to the following method:
[0044] (1) First mix the mineral base oil in an appropriate proportion and heat it to 35°C, then add antioxidant, viscosity index improver, extreme pressure antiwear agent, rust inhibitor, metal deactivator, detergent and dispersant in sequence, and stir After uniformity, antifoaming agent is added to obtain a mixture;
[0045] (2) Filter the mixture at a vacuum degree of 0.098 Mpa at 55° C. and perform multi-stage filtration with a precision of 5 microns and 3 microns in sequence, and then dry it at 50° C. under normal pressure to obtain the product.
[0046] After testing, the breakdown voltage of the obtained composition was 58kV.
Embodiment 8
[0048] Compared with Example 3, the only difference is that it is prepared according to the following method:
[0049] (1) First mix the mineral base oil in an appropriate proportion and heat it to 45°C, then add antioxidant, viscosity index improver, extreme pressure antiwear agent, rust inhibitor, metal deactivator, detergent and dispersant in sequence, and stir After uniformity, antifoaming agent is added to obtain a mixture;
[0050] (2) The mixture is filtered at a vacuum degree of 0.098Mpa at 50°C and multi-stage filtered with a precision of 5 microns and 3 microns in turn, and then dried at 60°C under normal pressure to obtain the final product.
[0051] After testing, the breakdown voltage of the obtained composition was 55kV.
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Abstract
The invention provides an insulated hydraulic oil composition which comprises the following components in percentage by weight: 0.1-3.0% of an antioxidant, 0.05-3.0% of an anti-wear reagent at extreme pressure, 0.01-0.5% of an antirust agent, 0.01-1.0% of an organic metal deactivator, 0.01-1.0% of a purification dispersant, 1.0-15.0% of a viscosity index improver, 20-200ppm of an antifoaming agent and the balance of basic oil. The invention further provides a preparation method of the composition. The insulated hydraulic oil composition disclosed by the invention has excellent extreme pressure wear resistance, oxidation resistance and oxidation stability, particularly has excellent electrical insulation property and can be applied to insulated hydraulic aerial cages and other hydraulic systems with high insulating property requirements.
Description
technical field [0001] The invention relates to an insulating hydraulic oil composition, in particular to a hydraulic oil composition with certain insulating properties, especially to a hydraulic oil composition with electrical insulation. Background technique [0002] Aerial work machinery (including vehicle-mounted work platforms, mobile elevating work platforms and fixed elevating work platforms) is a kind of equipment that lifts workers, tools, materials, etc. dedicated aerial work equipment. Aerial work machinery is widely used in decoration, cleaning and maintenance of building exterior walls, insulation wiring and maintenance, fire rescue and maintenance inspection of large objects (ships, aircraft), street lamp maintenance, mechanized construction operations, etc. Among them, insulated aerial work vehicles are mainly used in electric power, communication and other industries. In terms of safety, such vehicles require a certain insulation performance, and the hydraul...
Claims
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Application Information
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