Extreme pressure cutting fuild microemulsion free of chlorine and its preparation method and uses

A cutting fluid, extreme pressure technology, applied in the petroleum industry, lubricating compositions, etc., can solve the problems of strong corrosion of machine tool paint, shortening the service life of cutting fluid, poor oil discharge performance, etc., to improve the corrosion performance of machine tool paint, reduce The effect of improving waste liquid discharge and oil discharge performance

Inactive Publication Date: 2007-07-25
GUANGZHOU MECHANICAL ENG RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the microemulsion cutting fluid also has the following disadvantages during use: (1) The oil discharge performance of the microemulsion cutting fluid is poor. , it becomes an emulsion, which makes the microemulsion cutting fluid lose its superiority and greatly reduces the service life of the cutting fluid; The agent is expensive, the storage period is short, and it fails quickly, and it needs to be added continuously during use, which increases the product cost; (3) It is highly corrosive to the paint of the machine tool, and the paint of the machine tool often falls off during use
In addition, most products currently on the market still contain sodium nitrite, and extreme pressure microemulsion cutting fluids mostly use chlorine-containing extreme pressure agents, which are not conducive to environmental protection

Method used

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  • Extreme pressure cutting fuild microemulsion free of chlorine and its preparation method and uses

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Prepare the chlorine-free extreme pressure microemulsion cutting fluid of the present invention according to the process flow diagram shown in Fig. 1, and its steps are:

[0046] 1) Synthesis of boron amine rust inhibitor

[0047] Add 4 g of boric acid, mixed alcohol amine (by weight, diethanolamine: triethanolamine = 90: 10) 8 g, tap water (hardness of tap water is not higher than 250 ppm) 35 g into the reaction tank, stir at 10 ° C for 60 minutes, the solution is transparent , No sediment.

[0048] 2) In the reaction tank, add the remaining components according to the proportion of the formula, the sulfonate rust inhibitor is 10g of 50% petroleum sodium sulfonate, the anionic surfactant sulfonated rapeseed oil soap 8g, and the polyol ester is polyol lauric acid 4g of ester, 4g of sulfurized fatty acid ester containing 15% sulfur, oil separation aid is fatty alcohol polyoxyethylene ether MOA 3 (Its HLB value is not greater than 6) 2g, mineral oil has a kinematic visc...

Embodiment 2

[0050] Prepare the chlorine-free extreme pressure microemulsion cutting fluid of the present invention according to the process flow diagram shown in Fig. 1, and its steps are:

[0051] 1) Synthesis of boron amine rust inhibitor

[0052] Add 5 g of boric acid, 10 g of mixed alcohol amines (by weight, diethanolamine:triethanolamine=80:20), and 30 g of distilled water into the reaction tank, and stir at 28° C. for 35 minutes. The solution is transparent and free of precipitates.

[0053] 2) In the reaction tank, add the remaining components according to the formula ratio, the sulfonate rust inhibitor is 8g of 40% petroleum sodium sulfonate, the anionic surfactant sulfonated castor oil soap 10g, and the polyol ester is polyol oleic acid 6g of ester, 6g of sulfurized fatty acid ester containing 10% sulfur, oil separation aid is fatty alcohol polyoxyethylene ether MOA3 (The HLB value is not greater than 6) 3g, mineral oil is kinematic viscosity (40 ℃) is 32mm 2 / s of naphthenic oi...

Embodiment 3

[0055] Prepare the chlorine-free extreme pressure microemulsion cutting fluid of the present invention according to the process flow diagram shown in Fig. 1, and its steps are:

[0056] 1) Synthesis of boron amine rust inhibitor

[0057] Add 3 g of boric acid, 7 g of mixed alcohol amines (by weight, diethanolamine:triethanolamine=70:30), and 32 g of deionized water into the reaction tank, and stir at 22° C. for 45 minutes. The solution is transparent without sediment.

[0058] 2) In the reaction tank, add the remaining components according to the formula ratio, the sulfonate rust inhibitor is 9g of 60% petroleum sodium sulfonate, the anionic surfactant sulfonated rapeseed oil soap 9g, and the polyol ester is polyol oleic acid 5g of ester, 5g of sulfurized fatty acid ester containing 17% sulfur, oil separation aid is fatty alcohol polyoxyethylene ether MOA 3 (Its HLB value is not greater than 6) 1g, mineral oil has a kinematic viscosity (40°C) of 20mm 2 / s naphthenic oil 28.9...

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Abstract

The invention provides a fluoro-free extreme-pressure microemulsion cutting liquid, whose constituents by weight percentage include water 20-40, mixed alkylolamide 6-12, boracic acid 2-6, sulfonates rust-preventing agent 8-12, auxiliary agent 1-5%, anionic surface active agent 8-12, polybasic alcohol 2-6, sulfurized grease 4-10, mineral oil 15-30, benzotrizaole 0.1-0.3. The invention also provides a process for preparing the liquid.

Description

technical field [0001] The invention relates to metal processing lubrication technology, in particular to an environment-friendly chlorine-free extreme pressure microemulsion cutting fluid and its preparation method and application. Background technique [0002] Microemulsion cutting fluid is a kind of water-based cutting fluid, its performance is between water-based synthetic cutting fluid and emulsion, and its basic composition is mineral oil, water, surfactant, lubricant, rust inhibitor, etc. The emulsified particles of microemulsion cutting fluid in water are smaller than that of ordinary emulsion, and the aqueous solution is transparent or translucent. Microemulsion cutting fluid combines the good lubricating performance of emulsion and the advantages of good stability and cooling effect of synthetic cutting fluid. It is a water-based cutting fluid with superior performance and wide application range. However, the microemulsion cutting fluid also has the following disa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M173/00C10N40/22
Inventor 林心勇刘长期
Owner GUANGZHOU MECHANICAL ENG RES INST
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