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Synthetic ester type flame-retardant hydraulic oil

A technology of hydraulic oil and synthetic ester, applied in the field of hydraulic system, can solve the problems of low anti-wear ability of synthetic ester-type fire-resistant hydraulic oil, high ash content of fire-resistant hydraulic oil, increase device maintenance cost, etc., and achieve asymmetric molecular structure. High resistance, high anti-wear ability, and the effect of improving anti-oxidative stability

Inactive Publication Date: 2019-12-31
山东瑞兴阻燃科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the synthetic ester-type fire-resistant hydraulic oil currently on the market is mainly the esterification product of polyol and oleic acid, that is, the polyol unsaturated fatty acid ester. There are many additives in the hydraulic oil, resulting in a large amount of ash in the fire-resistant hydraulic oil, low degradation rate, and serious environmental pollution. At the same time, the synthetic ester-type fire-resistant hydraulic oil has low anti-wear ability, and it is easy to wear the components in the high-speed and high-pressure environment. , which increases the maintenance cost of the device

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Saturated polyol ester base oil 98.7% (trimethylolpropane octadecanoate 70.7%, pentaerythritol isostearate 28.7%), sulfurized di-tert-butylphenol 0.3%, benzotriazole octadecylamine 0.15% %, 0.25% of 4-diisooctyl diphenylamine, 0.3% of phosphorothioate ammonium salt, 0.3% of additives (0.6% of the main antioxidant N-phenyl-α-naphthylamine, 0.08% of the secondary antioxidant Pentaerythritol tetrakis (3-lauryl thiopropionate) and 0.32% extreme pressure antiwear agent tricresyl phosphate).

[0020] In this example, a method for preparing a synthetic ester-type fire-resistant hydraulic oil comprises the following steps: (1) adding the additive into a reaction kettle containing trimethylolpropane octadecanoate, fully Stir evenly to completely dissolve the additive to obtain a premixed oil solution. (2) Add pentaerythritol isostearate to the premixed oil, stir for 20-60min, then add vulcanized di-tert-butylphenol, benzotriazole octadecylamine salt and 4-diisooctyl diphenylami...

Embodiment 2

[0022] The difference from Example 1 is that in this example, a synthetic ester type fire-resistant hydraulic oil includes the following components:

[0023] Saturated polyol ester base oil 98.8% (trimethylolpropane octadecanoate 70.8%, pentaerythritol isostearate 28%), sulfurized di-tert-butylphenol 0.3%, benzotriazole octadecylamine salt 0.15% %, 0.25% of 4-diisooctyl diphenylamine, 0.2% of phosphorothioate ammonium salt, 0.3% of additives (0.6% of the main antioxidant N-phenyl-α-naphthylamine, 0.08% of the secondary antioxidant Pentaerythritol tetrakis (3-lauryl thiopropionate) and 0.32% extreme pressure antiwear agent tricresyl phosphate)

[0024] In this embodiment, the saturated polyol ester base oil is increased to 98.8%, and the phosphorothioate ammonium salt is reduced to 0.2%.

[0025] In this embodiment, the proportion of saturated polyol ester base oil content increased by 0.1%, and the proportion of phosphorothioate ammonium salt decreased by 0.1%, thereby reduci...

Embodiment 3

[0028] Embodiment 3 differs from Embodiment 1 and Embodiment 2 in that:

[0029] A synthetic ester type fire-resistant hydraulic oil, comprising the following components:

[0030] Saturated polyol ester base oil 98.8% (trimethylolpropane octadecanoate 78.8%, pentaerythritol isostearate 20%), sulfurized di-tert-butylphenol 0.3%, benzotriazole octadecylamine salt 0.15% %, 0.25% of 4-diisooctyl diphenylamine, 0.2% of phosphorothioate ammonium salt, 0.3% of additives (0.4% of the main antioxidant N-phenyl-α-naphthylamine, 0.08% of the secondary antioxidant Pentaerythritol tetrakis (3-lauryl thiopropionate) and 0.52% extreme pressure antiwear agent tricresyl phosphate).

[0031] In this embodiment, the proportion of the trimethylolpropane caprylate content increased by 8.0%, the proportion of the pentaerythritol isostearate content decreased by 8.0%, and the extreme pressure antiwear agent phosphoric acid The content of tricresyl ester increased by 0.2%.

[0032] In this example...

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PUM

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Abstract

The invention discloses a synthetic ester type flame-retardant hydraulic oil. The synthetic ester type flame-retardant hydraulic oil comprises the following components, 98.6%-99% of a saturated polyolester base oil, 0.2%-0.5% of vulcanized di-tert-butyl phenol, 0.1%-0.25% of benzotriazole octadecylamine salt, 0.2%-0.4% of 4-diisooctyl diphenylamine, 0.25%-0.4% of thiophosphate ammonium salt and 0.17%-0.34% of an additive. The synthetic ester type flame-retardant hydraulic oil disclosed by the invention is reasonable in design, stable in oxidation resistance, long in service life, and short inoil change period; using cost is reduced; the auxiliary agent performance of the base oil is stable, and wear resistance is excellent; the use of additives is reduced; the ash content of the flame-retardant hydraulic oil is reduced to a certain extent; the degradation rate is increased; the asymmetry of molecular structures in the base oil is higher, oil product pour point is lower; meanwhile, the synthestic ester type flame-retardant hydraulic oil is high in wear resistance, devices are not prone to being abraded in a high-speed and high-pressure environment, and the maintenance cost of devices is reduced.

Description

technical field [0001] The invention relates to the technical field of hydraulic systems, in particular to a synthetic ester type fire-resistant hydraulic oil. Background technique [0002] Hydraulic oil is a hydraulic medium used in a hydraulic system that utilizes liquid pressure energy. It plays the role of energy transmission, system lubrication, anti-corrosion, rust prevention, and cooling in the hydraulic system. Due to the continuous increase in the operating pressure of the vane pump and plunger pump and the impact on The wear and tear of the friction pair puts forward various demands on the hydraulic oil, which is also a large family of lubricating oils. As the requirements for the operating conditions of the equipment become more and more stringent, the requirements for fire prevention, rust prevention, and environmental protection are constantly increasing. improve. At present, the fire-resistant hydraulic oils on the market mainly include water glycol type, synt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M105/38C10M169/04C10N40/08C10N30/06C10N30/10
CPCC10M105/38C10M169/045C10M2207/283C10M2207/2835C10M2215/04C10M2215/064C10M2215/065C10M2215/223C10M2219/062C10M2219/087C10M2223/041C10M2223/047C10N2030/06C10N2030/10C10N2040/08C10N2030/72
Inventor 张继腾吕冀川
Owner 山东瑞兴阻燃科技有限公司
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