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Low temperature hydraulic oil and preparation method thereof

A hydraulic oil, low temperature technology, applied in the field of hydraulic oil, can solve problems such as high price

Active Publication Date: 2014-05-07
HARBIN YEW OIL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Expensive, not suitable for use in the northern part of Heilongjiang Province, Inner Mongolia and other alpine regions

Method used

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  • Low temperature hydraulic oil and preparation method thereof
  • Low temperature hydraulic oil and preparation method thereof
  • Low temperature hydraulic oil and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0019] Embodiment 1: In this embodiment, the medium and low temperature hydraulic oil is composed of 91% HVIS base oil, 3% ethylene-propylene copolymer, 2% polyalphaolefin pour point depressant, 1% 2,6-di-tert-butyl Made of p-cresol antioxidant and 3% sulfur phosphorus type extreme pressure antiwear agent.

[0020] Step 1. Weigh 91% HVIS base oil, 3% ethylene-propylene copolymer, 2% polyalphaolefin pour point depressant, 1% 2,6-di-tert-butyl-p-cresol antioxidant and 3% by weight percentage respectively %Thion type extreme pressure antiwear agent;

[0021] Step 2. Heat up the HVIS base oil weighed in step 1 to 120°C at a rate of 1°C / min, heat-preserve and dehydrate for 30 minutes, and then cool down to 80°C at a rate of 1°C / min;

[0022] Step 3, then add the ethylene-propylene copolymer, polyalphaolefin pour point depressant, 2,6-di-tert-butyl-p-cresol antioxidant and sulfur phosphorus type extreme pressure antiwear agent weighed in step 1;

[0023] Step 4, stirring at 60 r / m...

specific Embodiment approach 2

[0029] Specific embodiment two: In this embodiment, the low-temperature hydraulic oil is composed of 93% HVIS base oil, 1% ethylene-propylene copolymer, 1% polyalphaolefin pour point depressant, 1% thiadiazole derivative and 4% by weight percentage. Made of sulfur phosphorus type extreme pressure antiwear agent.

[0030] Step 1. Weigh 93% of HVIS base oil, 1% of ethylene-propylene copolymer, 1% of polyalphaolefin pour point depressant, 1% of thiadiazole derivatives and 4% of sulfur-phosphorus extreme pressure antiwear agent by weight percentage ;

[0031] Step 2. Heat up the HVIS base oil weighed in step 1 to 120°C at a rate of 1°C / min, heat-preserve and dehydrate for 30 minutes, and then cool down to 80°C at a rate of 1°C / min;

[0032] Step 3, then add the ethylene-propylene copolymer, polyalphaolefin pour point depressant, thiadiazole derivatives and thion-type extreme pressure antiwear agent weighed in step 1;

[0033] Step 4, stirring at 60 r / min for 40 minutes under the...

specific Embodiment approach 3

[0039] Specific embodiment three: In this embodiment, the low-temperature hydraulic oil is composed of 88% HVIS base oil, 4% ethylene-propylene copolymer, 2% polyalphaolefin pour point depressant, 2% thiadiazole derivatives and 4% by weight percentage Made of sulfur phosphorus type extreme pressure antiwear agent.

[0040] Step 1. Weigh 88% of HVIS base oil, 4% of ethylene-propylene copolymer, 2% of polyalphaolefin pour point depressant, 2% of thiadiazole derivatives and 4% of sulfur-phosphorus extreme pressure antiwear agent by weight percentage ;

[0041] Step 2. Heat up the HVIS base oil weighed in step 1 to 120°C at a rate of 1°C / min, heat-preserve and dehydrate for 30 minutes, and then cool down to 80°C at a rate of 1°C / min;

[0042] Step 3, then add the ethylene-propylene copolymer, polyalphaolefin pour point depressant, thiadiazole derivatives and thion-type extreme pressure antiwear agent weighed in step 1;

[0043] Step 4, stirring at 60 r / min for 40 minutes under t...

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Abstract

The invention relates to low temperature hydraulic oil and a preparation method thereof, belonging to the field of hydraulic oil. With the condensation point below 50 DEG C, the low temperature hydraulic oil is applicable to extremely cold regions with environment temperature below -45 DEG C. The low temperature hydraulic oil is prepared from HVIS (high-viscosity index) base oil, a viscosity index improver, a pour point depressant, an antioxidant and a anti-wear reagent at extreme pressure. The preparation method comprises the following steps of firstly, weighing; secondly, rising temperature of the HVIS base oil weighed in step (1) up to be 110-130 DEG C, preserving heat and dehydrating for 30-40 minutes, and cooling down to 80-90 DEG C; thirdly, adding the viscosity index improver, the pour point depressant, the antioxidant and the anti-wear reagent at extreme pressure weighed in step (1); and fourthly, stirring, after qualification detection, filtering so as to obtain the low temperature hydraulic oil. The low temperature hydraulic oil is mainly used as a power transmission working medium of various crane hydraulic systems, outdoor hydraulic equipment and other hydraulic systems with high viscosity requirement used in cold regions.

Description

technical field [0001] The invention belongs to the field of hydraulic oil; in particular, it relates to low-temperature hydraulic oil and a preparation method thereof. Background technique [0002] At present, there are two main types of hydraulic oil suitable for low temperature environment in China: L-HV hydraulic oil and L-HS hydraulic oil. The freezing point of L-HV hydraulic oil is -33°C, which is suitable for cold areas where the ambient temperature is around -20°C. The freezing point of L-HS hydraulic oil is -45°C, which is suitable for cold areas where the ambient temperature is around -30°C. Area applicable, and L-HS hydraulic oil is produced synthetically. It is expensive and not suitable for use in the northern part of Heilongjiang Province, Inner Mongolia and other alpine regions. Contents of the invention [0003] The invention provides a low-temperature hydraulic oil and a preparation method thereof. The low-temperature hydraulic oil of the invention has a...

Claims

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Application Information

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IPC IPC(8): C10M169/04C10N30/06C10N30/08C10N30/12C10N40/08
Inventor 杨淑芬胡杨
Owner HARBIN YEW OIL
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