WO2023050579A1

WO2023050579A1 - Aluminum alloy cutting fluid and preparation method therefor

Info

Publication number: WO2023050579A1
Application number: PCT/CN2021/137131
Authority: WO
Inventors: 姜波; 汪小龙
Original assignee: 安美科技股份有限公司
Priority date: 2021-09-30
Filing date: 2021-12-10
Publication date: 2023-04-06
Also published as: CN113845965A

Abstract

An aluminum alloy cutting fluid and a preparation method therefor, the aluminum alloy cutting fluid comprising: an alcohol amine, an anti-rust agent, a lubricant, a corrosion inhibitor, a metal corrosion inhibitor and water; the alcohol amine is obtained by means of compounding a special amine with triethanolamine, the anti-rust agent is obtained by compounding a dibasic acid with a ternary organic polycarboxylic acid, the lubricant is obtained by compounding a polyether ester with a polyether, and the metal corrosion inhibitor is obtained by compounding a corrosion inhibitor with a film-forming agent. The preparation method of the aluminum alloy cutting fluid comprises: sequentially adding deionized water, the alcohol amine and the anti-rust agent to a container, and stirring until dissolved; sequentially adding the lubricant, the corrosion inhibitor and the metal corrosion inhibitor to the container, and stirring until uniform and transparent. The described aluminum alloy cutting fluid provides good protection for aluminum alloys, has good lubricating and anti-rust performance, and is safe and environmentally friendly.

Description

Aluminum alloy cutting fluid and preparation method thereof

technical field

The invention relates to the technical field of cutting fluid, in particular to an aluminum alloy cutting fluid and a preparation method thereof.

Background technique

Cutting fluid is an industrial liquid used in metal cutting, grinding, drilling and other processing processes to lubricate, prevent rust, cool, and clean. The cutting fluid is made of various functional additives through scientific compounding, which has good cooling performance, lubricating performance, anti-rust performance, cleaning function, anti-corrosion function, and easy dilution. Traditional soap-based emulsions are easy to smell in summer, difficult to dilute in winter, and have poor anti-rust effects. The PH is also high and has poor adaptability to human skin. The pH of the cutting fluid system developed in this project is neutral and has good adaptability to human skin. It is suitable for metal cutting and grinding, and has no adverse effects on lathe paint. It is a leading fully synthetic product at present.

All indicators of cutting fluid are better than saponified oil. It has good lubrication, cooling, cleaning, anti-rust and other characteristics, and has the characteristics of non-toxic, odorless, non-corrosive to human body, non-corrosive to equipment, and non-polluting to the environment.

Aluminum alloy materials are the most widely used in the machining industry, ranging from aircraft and aviation to submarines and cruise ships. In the entire metal processing industry, aluminum alloys have a market share of more than 50%. Therefore, the cutting fluid used in the processing of aluminum alloys It also occupies a large part of the market in metalworking fluids. In the past, aluminum alloy cutting fluids were generally emulsified and semi-synthetic. This type of cutting fluid is easy to breed bacteria and has poor cleaning performance. In order to ensure antirust and antibacterial performance, the PH is relatively high, and it has poor adaptability to human skin. Moreover, the COD content is high, which is harmful to the human body and cannot be discharged directly.

Contents of the invention

Based on this, in order to solve the above problems, the present invention provides an aluminum alloy cutting fluid.

The invention also provides a preparation method of the aluminum alloy cutting fluid.

An aluminum alloy cutting fluid, comprising the following components: alcohol amine, antirust agent, lubricant, corrosion inhibitor, metal corrosion inhibitor and water, the alcohol amine is obtained by compounding special amine with triethanolamine, the antirust The rust agent is obtained by compounding ternary organic polycarboxylic acid with dibasic acid, the lubricant is obtained by compounding polyether with polyether ester, and the metal corrosion inhibitor is obtained by compounding film-forming agent with corrosion inhibitor.

The above-mentioned aluminum alloy cutting fluid, ordinary triethanolamine compounded with special amine, makes the product have a good alkali reserve, and ensures that the product has a good anti-rust environment and antibacterial performance; the anti-rust agent uses ternary organic polycarboxylic acid compounded dibasic acid , not only has better rust resistance, but also has good resistance to hard water; the lubricant is polyether compounded with polyether ester, so that the cutting fluid has better lubricating performance; it is compounded with various corrosion inhibitors, benzotriazepine Azole or its derivatives are compounded with a film-forming agent, and then compounded with a metal corrosion inhibitor, so that the cutting fluid has a good protective effect on aluminum alloy and copper; Components that are harmful to the human body, have better environmental protection performance and lubricating performance.

In one embodiment, the aluminum alloy cutting fluid includes the following components in parts by weight: 10-20 parts of alcohol amine, 10-15 parts of rust inhibitor, 5-10 parts of lubricant, 0.5-1 part of corrosion inhibitor, metal 1-3 parts of corrosion inhibitor and 20-40 parts of water.

In one embodiment, the corrosion inhibitor is benzotriazole or its derivatives.

In one embodiment, the special amine is diglycolamine or 2-amino-2-methyl-1-propanol.

In one embodiment, the dibasic acid is sebacic acid or dodecanedioic acid.

In one embodiment, the film-forming agent is trimer acid or tetramer acid.

In one embodiment, the corrosion inhibitor is silicone.

The present invention also provides a preparation method of the aluminum alloy cutting fluid, comprising the steps of:

Add deionized water, alcohol amine and antirust agent into the container in turn, and stir until dissolved;

Add lubricant, corrosion inhibitor and metal corrosion inhibitor in sequence into the container, and stir until uniform and transparent.

Detailed ways

In order to facilitate the understanding of the present invention, the following will describe the present invention more fully. However, the present invention can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the understanding of the disclosure of the present invention more thorough and comprehensive.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of the invention. The terms used herein in the description of the present invention are for the purpose of describing specific embodiments only, and are not intended to limit the present invention.

The invention provides an aluminum alloy cutting fluid, which comprises the following components: alcohol amine, antirust agent, lubricant, corrosion inhibitor, metal corrosion inhibitor and water. The lubricant is obtained by compounding ternary organic polycarboxylic acid with dibasic acid, the lubricant is obtained by compounding polyether with polyether ester, and the metal corrosion inhibitor is obtained by compounding film-forming agent with corrosion inhibitor.

Ordinary triethanolamine compounded with special amine makes the product have a good alkali reserve and ensures that the product has a good anti-rust environment and antibacterial performance; the anti-rust agent uses ternary organic polycarboxylic acid compounded dibasic acid, which not only has better anti-rust Rust resistance, and good resistance to hard water; the lubricant is made of polyether compounded with polyether ester, so that the cutting fluid has better lubricating performance; it is compounded with various corrosion inhibitors, compounded with benzotriazole or its derivatives The film-forming agent and the metal corrosion inhibitor are compounded to make the cutting fluid have a good protective effect on aluminum alloy and copper. The film-forming agent and the corrosion inhibitor are compounded to adsorb on the metal surface to form a dense protective film, making the metal The protective agent can play a better role; the cutting fluid system is a neutral system (pH<8)), so it has good protection for aluminum alloys and good adaptability to human skin. At the same time, the product does not contain phosphorus, boron, sodium nitrite and other substances harmful to the environment and human body, so it has good environmental protection performance.

Further, the above-mentioned aluminum alloy cutting fluid includes the following components by weight: 10-20 parts of alcohol amine, 10-15 parts of rust inhibitor, 5-10 parts of lubricant, 0.5-1 part of corrosion inhibitor, metal corrosion inhibitor 1-3 parts of medicine and 20-40 parts of water.

For example, 10 parts, 11 parts, 12 parts, 14 parts, 15 parts, 15.5 parts, 16 parts, 18 parts, 18.5 parts and 20 parts of alcohol amine; 10 parts, 10.5 parts, 11 parts, 11.5 parts, 12 parts of rust inhibitor parts, 12.2 parts, 13 parts, 13.5 parts, 14 parts and 15 parts; lubricant 5 parts, 5.5 parts, 6 parts, 6.8 parts, 7 parts, 7.5 parts, 8 parts, 8.2 parts, 8.5 parts, 9 parts, 9.5 parts 1 part and 10 parts; corrosion inhibitor 0.5 part, 0.6 part, 0.65 part, 0.7 part, 0.75 part, 0.8 part, 0.85 part, 0.9 part, 0.98 part and 1 part; metal corrosion inhibitor 1 part, 1.2 part, 1.5 part , 2, 2.4, 2.6, 2.8, and 3.

Among them, the special amine is diglycolamine or 2-amino-2-methyl-1-propanol of Dow Chemical.

In one embodiment, triethanolamine and special amine can be mixed in any ratio. Preferably, the ratio of triethanolamine and special amine is 1:1-2.

The ternary organic polycarboxylic acid and the dibasic acid can be blended in any ratio. Preferably, the ratio of ternary organic polycarboxylic acid and dibasic acid is 1:1-2.

Polyether and polyether ester can be blended in any proportion. Preferably, polyether and polyether ester are mixed in a ratio of 1:1-1.5.

The film forming agent and the corrosion inhibitor can be mixed in any proportion. Preferably, the film-forming agent and the corrosion inhibitor are formulated in a ratio of 1:1-3.

In one embodiment, sebacic acid or dodecane dibasic acid is selected as the dibasic acid. This type of additive not only has good anti-rust performance, but also has strong resistance to hard water and low foam, so that the cutting fluid not only has good anti-rust performance but also Enhance product life and low foam.

In one embodiment, polyether ester has better lubricity than polyether, and the combination with polyether makes the product have stronger lubricity, and the product system is a neutral system at the same time, and this type of material lubricates better under neutral conditions.

In one embodiment, the film-forming agent is a trimer acid or a tetramer acid, and the trimer acid or tetramer acid can be better adsorbed on the metal surface to form a dense protective film to prevent metal corrosion after being neutralized by an alkali, providing a good protection agent for the metal. Film-forming environment and effectively enhance the role of metal protective agents.

In one embodiment, the corrosion inhibitor is siloxane ketone, which has a good protective effect on aluminum alloys, and at the same time it does not contain phosphorus, so it meets the national environmental protection requirements, so there will be no foam problems caused by phosphorus and Easy to breed bacteria problems.

Add lubricant, corrosion inhibitor and metal corrosion inhibitor in turn to the container, and stir until uniform and transparent. Wherein, the stirring time for both times is 10min-15min, and it can be stirred until the components are mutually dissolved.

The implementation of the present invention will be further described through several examples below.

Embodiment one

This embodiment provides an aluminum alloy cutting fluid, which consists of the following components in parts by weight: 15 parts of alcohol amine, 12 parts of rust inhibitor, 8 parts of lubricant, 0.8 part of corrosion inhibitor, 2 parts of metal corrosion inhibitor and water 30 servings. Among them, the alcohol amine is obtained by compounding triethanolamine and 2-amino-2-methyl-1-propanol at a mass ratio of 1:1, and the antirust agent is obtained by using ternary organic polycarboxylic acid 485 and sebacic acid at a ratio of 1 The mass ratio of :1 is obtained by compounding. The lubricant is obtained by compounding polyether and polyether ester 483 at a mass ratio of 1:2. The metal corrosion inhibitor is composed of trimer acid and silicone ketone at a mass ratio of 1:1. The quality ratio is compounded.

Embodiment two

This embodiment provides an aluminum alloy cutting fluid, which consists of the following components in parts by weight: 10 parts of alcohol amine, 10 parts of rust inhibitor, 5 parts of lubricant, 0.5 part of corrosion inhibitor, 1 part of metal corrosion inhibitor and water 20 servings. Among them, the alcohol amine is obtained by compounding triethanolamine and 2-amino-2-methyl-1-propanol at a mass ratio of 1:1, and the antirust agent is obtained by using ternary organic polycarboxylic acid 485 and sebacic acid at a ratio of 1 The mass ratio of :1 is obtained by compounding. The lubricant is obtained by compounding polyether and polyether ester 483 at a mass ratio of 1:2. The metal corrosion inhibitor is composed of trimer acid and silicone ketone at a mass ratio of 1:1. The quality ratio is compounded.

Embodiment three

This embodiment provides an aluminum alloy cutting fluid, which consists of the following components in parts by weight: 20 parts of alcohol amine, 15 parts of rust inhibitor, 10 parts of lubricant, 1 part of corrosion inhibitor, 3 parts of metal corrosion inhibitor and water 40 servings. Among them, the alcohol amine is obtained by compounding triethanolamine and 2-amino-2-methyl-1-propanol at a mass ratio of 2:1, and the antirust agent is made of ternary organic polycarboxylic acid 485 and dodecyl carbon binary The acid is compounded at a mass ratio of 2:1, the lubricant is obtained by compounding polyether and polyether ester 1500 at a mass ratio of 1:1, and the metal corrosion inhibitor is obtained by compounding trimer acid and siloxane in 2 : 1 mass ratio compounded.

Embodiment Four

The present embodiment provides an aluminum alloy cutting fluid, which consists of the following components by weight: 18 parts of alcohol amine, 12 parts of antirust agent, 6 parts of lubricant, 0.6 part of corrosion inhibitor, 1 part of metal corrosion inhibitor and 25 parts of water. Among them, the alcohol amine is obtained by compounding triethanolamine and diglycolamine at a mass ratio of 1:1, and the antirust agent is obtained by compounding ternary organic polycarboxylic acid 485 and sebacic acid at a mass ratio of 1:1 , The lubricant is obtained by compounding polyether and polyether ester 483 at a mass ratio of 1:2, and the metal corrosion inhibitor is obtained by compounding polyacid and silicone ketone at a mass ratio of 1:1.

Comparative example one

This comparative example provides a kind of aluminum alloy cutting fluid, is made up of the following components by weight: 15 parts of alcohol amines, 12 parts of rust inhibitors, 8 parts of lubricants, 0.8 parts of corrosion inhibitors, 2 parts of metal corrosion inhibitors and water 30 servings. Among them, the alcohol amine is triethanolamine, the antirust agent is obtained by compounding ternary organic polycarboxylic acid 485 and sebacic acid at a mass ratio of 1:1, and the lubricant is polyether and polyether ester 483 at a ratio of 1:2. It is obtained by compounding the mass ratio, and the metal corrosion inhibitor is obtained by compounding trimer acid and silicone ketone at a mass ratio of 1:1.

Comparative example two

This comparative example provides a kind of aluminum alloy cutting fluid, is made up of the following components by weight: 15 parts of alcohol amines, 12 parts of rust inhibitors, 8 parts of lubricants, 0.8 parts of corrosion inhibitors, 2 parts of metal corrosion inhibitors and water 30 servings. Among them, the alcohol amine is obtained by compounding triethanolamine and 2-amino-2-methyl-1-propanol at a mass ratio of 1:1, the antirust agent is sebacic acid, and the lubricant is polyether and polyether ester 483 is compounded at a mass ratio of 1:2, and the metal corrosion inhibitor is compounded at a mass ratio of trimer acid and siloxane ketone at a mass ratio of 1:1.

Comparative example three

This comparative example provides a kind of aluminum alloy cutting fluid, is made up of the following components by weight: 15 parts of alcohol amines, 12 parts of rust inhibitors, 8 parts of lubricants, 0.8 parts of corrosion inhibitors, 2 parts of metal corrosion inhibitors and water 30 servings. Among them, the alcohol amine is obtained by compounding triethanolamine and 2-amino-2-methyl-1-propanol at a mass ratio of 1:1, and the antirust agent is obtained by using ternary organic polycarboxylic acid 485 and sebacic acid at a ratio of 1 It is obtained by compounding with a mass ratio of 1:1, the lubricant is polyether, and the metal corrosion inhibitor is obtained by compounding trimer acid and silicone ketone at a mass ratio of 1:1.

Comparative example four

This comparative example provides a kind of aluminum alloy cutting fluid, is made up of the following components by weight: 15 parts of alcohol amines, 12 parts of rust inhibitors, 8 parts of lubricants, 0.8 parts of corrosion inhibitors, 2 parts of metal corrosion inhibitors and water 30 servings. Among them, the alcohol amine is obtained by compounding triethanolamine and 2-amino-2-methyl-1-propanol at a mass ratio of 1:1, and the antirust agent is obtained by using ternary organic polycarboxylic acid 485 and sebacic acid at a ratio of 1 The mass ratio of :1 is compounded, the lubricant is compounded with polyether and polyether ester 483 at a mass ratio of 1:2, and the metal corrosion inhibitor is trimer acid.

In the following, experiments will be carried out on the above-mentioned embodiments and comparative examples to compare their protection, anti-rust and lubricating performance on aluminum alloys and other related technical data. The results are shown in Table 1.

Table I

Note: The smaller the value of tapping torque, the better the lubrication.

It can be seen from Table 1 that the aluminum alloy cutting fluid of each embodiment can meet the requirements of protection performance, rust prevention and lubricating performance of aluminum alloy and is better than the comparison examples, PH<8, and is well adapted to the skin.

In each comparative example, the alcohol amine in comparative example one is not compounded, only triethanolamine is used, its pH is lower than each embodiment, and the antirust performance is not as good as each embodiment; the rust preventive agent in comparative example two is not compounded, Only adopt sebacic acid, its antirust performance is all inferior to each embodiment; The lubricant in comparative example 3 is not compounded, only adopts polyether, its lubricity is inferior to each embodiment; Metal corrosion inhibitor in comparative example 4 is not Composite, only adopts silicone ketone, its aluminum alloy protective performance is inferior to each embodiment.

The technical features of the above-mentioned embodiments can be combined arbitrarily. To make the description concise, all possible combinations of the technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, should be considered as within the scope of this specification.

The above-mentioned embodiments only express several implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but should not be construed as limiting the scope of the patent for the invention. It should be pointed out that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent for the present invention should be based on the appended claims.

Claims

An aluminum alloy cutting fluid is characterized in that it includes the following components: alcohol amine, antirust agent, lubricant, corrosion inhibitor, metal corrosion inhibitor and water, and the alcohol amine is obtained by compounding special amine with triethanolamine , the antirust agent is obtained by compounding dibasic acid with ternary organic polycarboxylic acid, the lubricant is obtained by compounding polyether ester with polyether, and the metal corrosion inhibitor is obtained by compounding corrosion inhibitor with film forming agent obtained by medicine.
The aluminum alloy cutting fluid according to claim 1, wherein the aluminum alloy cutting fluid comprises the following components in parts by weight: 10-20 parts of alcohol amine, 10-15 parts of rust inhibitor, 5-10 parts of lubricant 0.5-1 part of corrosion inhibitor, 1-3 parts of metal corrosion inhibitor and 20-40 parts of water.
The aluminum alloy cutting fluid according to claim 1 or 2, characterized in that the corrosion inhibitor is benzotriazole or its derivatives.
The aluminum alloy cutting fluid according to claim 1 or 2, wherein the special amine is diglycolamine or 2-amino-2-methyl-1-propanol.
The aluminum alloy cutting fluid according to claim 1 or 2, wherein the dibasic acid is sebacic acid or dodecanedibasic acid.
The aluminum alloy cutting fluid according to claim 1 or 2, wherein the film-forming agent is trimer acid or tetramer acid.
The aluminum alloy cutting fluid according to claim 1 or 2, wherein the corrosion inhibitor is siloxane.
A preparation method of the aluminum alloy cutting fluid according to any one of claims 1-7, characterized in that, comprising the steps of:

Add deionized water, alcohol amine and antirust agent into the container in turn, and stir until dissolved;

Add lubricant, corrosion inhibitor and metal corrosion inhibitor in sequence into the container, and stir until uniform and transparent.