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Flame-retardant hydraulic oil and preparation and application thereof

A hydraulic oil and flame retardant technology, applied in the petroleum industry, lubricating compositions, etc., can solve problems such as poor lubricity, limited application range, and failure to meet the long-life requirements of hydraulic systems, and achieve the effect of simple process conditions

Active Publication Date: 2010-09-15
上海海都化学科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the service pressure of the water-containing fire-resistant hydraulic fluid is generally lower than 10Mpa, and the lubricity is poor, which cannot meet the long-life service requirements of the hydraulic system under high temperature and high pressure conditions.
Due to the constraints of material adaptability, toxicity, price and increasingly stringent environmental protection requirements, the scope of use of non-aqueous phosphate ester and chlorinated hydrocarbon fire-resistant hydraulic oils will be increasingly restricted

Method used

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  • Flame-retardant hydraulic oil and preparation and application thereof
  • Flame-retardant hydraulic oil and preparation and application thereof
  • Flame-retardant hydraulic oil and preparation and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0073] The preparation of embodiment 1 base oil

[0074] The preparation process is as follows:

[0075] 1. Select a dibasic acid with a carbon number of 5 to 12, add a mixed alcohol consisting of neopentyl glycol, trimethylolpropane and neopentylthritol in an amount twice the amount of the dibasic acid, and then add the substance The amount of the mixed dibasic acid is 0.95-1.05% tetraoctyl zirconate and 1.9-2.1% p-toluenesulfonic acid as a catalyst, and the reaction is stirred at a temperature of 160-180°C for 140-180 minutes to complete the first step Esterification reaction.

[0076] 2. The amount of the added substance is more than 4 times of the mixed dibasic acid, and the monobasic fatty acid with a carbon number of 14 to 20, (the monobasic fatty acid should be in excess, so that the second step of the esterification reaction is complete), at a temperature of 200-220 ° C Stir the reaction for 100 to 120 minutes to complete the second step of the esterification reactio...

Embodiment 2

[0088] The preparation of embodiment 2 antioxidant

[0089] Antioxidant was prepared according to the formula in parts by weight in Table 3.

[0090] Preparation method: Mix the raw materials evenly according to the proportion.

[0091] table 3

[0092]

[0093] The structural formula of table 3 thiocarbamate is (C 4 h 9 ) 2 NCS 2 CS 2 CN(C 4 h 9 ) 2 .

Embodiment 3

[0094] The performance of embodiment 3 antioxidants

[0095] The 4# formulation base oil in Example 1 was used to mix with various antioxidants in the following table, wherein the base oil accounted for 98wt%, and the total amount of antioxidants accounted for 2wt%. Mix the raw materials according to the ratio and stir evenly.

[0096] Table 4

[0097]

[0098] Note: the total amount of antioxidants is 2.0%; wherein, the structural formula of thiocarbamate is (C 4 h 9 ) 2 NCS 2 CS 2 CN(C 4 h 9 ) 2 .

[0099]As can be seen from the data in Table 4, the present invention selects the antioxidant compound compounded by diisooctyl diphenylamine, phenyl-α-naphthylamine, 2,6 di-tert-butylphenol and thiocarbamate. It achieves the complementary performance advantages of various antioxidants and greatly improves the long-term high-temperature anti-oxidation stability of oil products.

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PUM

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Abstract

The invention provides flame-retardant hydraulic oil, which comprises the following components in percentage by weight: 1.9 to 4.5 percent of antioxidant, 1.5 to 3.5 percent of extreme-pressure abrasion resistant agent, 5 to 50ppm of antifoaming agent, 0.1 to 0.4 percent of anti-rusting agent and 92 to 97 percent of base oil, wherein the base oil is neopentyl polyol diacid composite ester which is prepared by fully esterifying carboxyl of aliphatic dibasic acid of C5-12 with mixed alcohol consisting of neopentyl glycol, trimethylolpropane and pentaerythritol and terminating the esterified product with unsaturated unitary fatty acid of C14-20. The flame-retardant hydraulic oil provided by the invention can be applied to various high-temperature and high-pressure hydraulic systems easy to contact naked flame. Compared with mineral-based (compressor) hydraulic oil, the flame-retardant hydraulic oil has the advantages of energy conservation, reduced oil consumption, reduced environmental pollution and prolonged service life, and can fully meet the working requirements of the high-temperature and high-pressure hydraulic systems easy to contact naked flame.

Description

technical field [0001] The invention relates to a fire-resistant hydraulic oil and its preparation and application, belonging to the technical field of industrial lubricating oil. Background technique [0002] Hydraulic machinery has been widely used in industries such as iron and steel, electric power, coal and machinery. As a power medium, hydraulic oil is the key material of hydraulic transmission technology, and it is also one of the three important oil products with the largest consumption of industrial lubricating oil. With the continuous development of modern hydraulic technology, some hydraulic systems often work under high pressure and high temperature conditions. More stringent requirements are placed on the flame resistance of the hydraulic oil used. Before the 1970s, countries devoted themselves to the development of water-containing emulsions (W / O and O / W types), water-glycol type, non-aqueous phosphate ester type, and chlorinated hydrocarbon type fire-resista...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/04C10N40/08C10N30/08C10N30/10C10N30/18C10N30/12
Inventor 王鹏汪宪臣姜作泰
Owner 上海海都化学科技有限公司
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