WO2023092693A1

WO2023092693A1 - Anti-wear agent and preparation method therefor

Info

Publication number: WO2023092693A1
Application number: PCT/CN2021/137054
Authority: WO
Inventors: 孙辉; 汪小龙
Original assignee: 安美科技股份有限公司
Priority date: 2021-11-29
Filing date: 2021-12-10
Publication date: 2023-06-01
Also published as: CN114149850A

Abstract

An anti-wear agent comprises the following components: a water-insoluble polyether base oil, a friction modifier, an antioxidant, and an anti-rust additive; and the friction modifier is a mixture of a liquid phosphonic acid amine and a fatty acid ester. According to the anti-wear agent, the lubricity can be improved, the pitch-blackness and precipitation of oil products of a machine table are not prone to occurring, and it is not easy to break needles.

Description

Antifriction agent and its preparation method

technical field

The invention relates to the technical field of lubricating oil, in particular to a wear reducer and a preparation method thereof.

Background technique

There are many kinds of lubricants used for the lubrication of seamless knitting machines on the market, including water-based and oil-based lubricants. Water-based lubricants will be rusted and yellowed during use, while oil-based lubricants will cause system temperature rise, machine oil to be dark, precipitation, and broken needles.

Contents of the invention

Based on this, it is necessary for the present invention to provide a wear reducing agent.

The invention also provides a preparation method of the wear reducer.

In order to realize the purpose of the present invention, the present invention adopts following technical scheme:

A friction reducer comprises the following components: water-insoluble polyether base oil, friction modifier, antioxidant and antirust additive; the friction modifier is a mixture of liquid phosphonic acid amine and fatty acid ester.

The above-mentioned antifriction agent, water-insoluble polyether base oil is easy to form an oil film on the friction surface, has good lubricity, and will not generate sediment and colloid when used at high temperature, and liquid phosphonic acid amine forms on the surface of lubricating parts The chemical reaction film and the adsorption film of additives can increase the strength and thickness of the oil film, reduce the friction coefficient, and effectively prevent the wear of the tooth surface. With the fatty acid ester, it can adsorb the metal surface to form a firm lubricating protective film, which greatly improves the anti-friction performance of the oil. , thereby greatly improving the lubricity of the wear reducing agent; and because of its strong ability to resist high temperature, it is not easy to cause the machine oil to be dark, precipitated, and difficult to break the needle.

In some embodiments, the liquid amine phosphonate and the fatty acid ester are mixed in a mass ratio of 1:1-3.

In some of these embodiments, the antirust additive is a mercaptothiadiazole derivative.

In some of these embodiments, the mercaptothiadiazole derivative is a 1,3,4-mercaptothiadiazole dimer derivative.

In some embodiments, the water-insoluble polyether base oil is polyethylene glycol ether.

In some embodiments, the antioxidant is a mixture of amine antioxidants and phenolic antioxidants.

In some embodiments, the amine antioxidant is a ketoamine trimethyldihydroquinoline oligomer, and the phenolic antioxidant is a high molecular weight phenolic ester.

In some of these embodiments, the anti-friction agent comprises the following components in parts by weight: friction modifier 2%-8%, antioxidant 0.2%-1.8%, antirust additive 0.3%-1%, and water-insoluble polyether base oil balance.

In some of these embodiments, the anti-friction agent comprises the following components in parts by weight: friction modifier 2%-8%, antioxidant 0.2%-1.8%, anti-rust additive 0.3%-1%, defoamer 0.001% %-0.08% and the balance of water-insoluble polyether base oil.

A kind of preparation method of described antifriction agent, comprises the steps:

Add part of the water-insoluble polyether base oil into the container, heat it to 110°C-140°C and keep it for the first time, then add the antioxidant into the container, keep stirring for 15min-30min;

Add the remaining water-insoluble polyether base oil into the container, then add friction modifier and anti-rust additive, control the temperature at 80°C-90°C, and stir for not less than 40min to obtain crude oil;

The crude oil is filtered to obtain the finished product.

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 a friction reducing agent, which includes the following components: water-insoluble polyether base oil, friction modifier, antioxidant and antirust additive; the friction modifier is a mixture of liquid phosphonic acid amine and fatty acid ester .

Among them, the water-insoluble polyether base oil is polyethylene glycol ether, which is obtained by ring-opening copolymerization of ethylene oxide and propylene oxide, which has excellent viscosity-temperature performance and high viscosity index; better low temperature Fluidity, low pour point; due to the polarity of polyether molecules, it is easy to form an oil film on the friction surface and has good lubricity; the thermal oxidation stability of polyether is similar to that of mineral oil, but its susceptibility to antioxidants is excellent For mineral oil, under the conditions of high temperature and oxygen, it is easy to break the chain to form carbonyl and carboxyl compounds that are volatile at high temperature, so polyether will not generate precipitates and gums when used at high temperature; the raw material ring of polyether Oxane is a petrochemical product, which is cheap and easy to obtain, and has high cost performance; moreover, polyether is non-toxic, environmentally friendly and biodegradable.

The friction modifier is a mixture of liquid amine phosphonates and fatty acid esters. Liquid phosphonic acid amine is a mixture of phosphonic acid amines, which forms a chemical reaction film and an adsorption film of additives on the surface of lubricating parts, which increases the strength and thickness of the oil film, reduces the friction coefficient, and effectively prevents tooth surface wear; the fatty acid ester is a double quaternary fatty acid Esters and their derivatives can adsorb on the metal surface to form a strong lubricating protective film, greatly improving the anti-friction properties of oils.

Preferably, the liquid amine phosphonate and the fatty acid ester are mixed in a mass ratio of 1:1-3. After mixing in this mass ratio, the two can give full play to their strengths and jointly form the effect of high temperature resistance and oxidation resistance.

The antioxidant is a mixture of amine antioxidants and phenolic antioxidants. Amine antioxidant is a high-temperature antioxidant with superior performance. It has the characteristics of good thermal stability, outstanding oxidation resistance under high temperature conditions, and good oil solubility. Polyether base oil can exert better high temperature oxidation resistance.

In one embodiment, the amine antioxidant is a ketoamine trimethyldihydroquinoline oligomer; the phenolic antioxidant is a high molecular weight phenolic ester. These two antioxidants have good compatibility and high temperature oxidation resistance.

In one embodiment, the antirust additive is a mercaptothiadiazole derivative. The mercaptothiadiazole derivatives are 1,3,4-mercaptothiadiazole dimer derivatives, which can form a mercaptothiadiazole protective coating on the surface of lubricated parts to achieve the effect of corrosion prevention and rust prevention.

In one embodiment, the above-mentioned antifriction agent further includes a defoamer.

Preferably, the above-mentioned defoamer is a non-silicon type defoamer. This type of defoamer can cooperate with the above-mentioned water-insoluble polyether base oil and antioxidant to suppress the generation of foam to a large extent and improve the performance of the friction reducer.

One is that in the embodiment, the non-silicon defoamer is an acrylate non-silicon defoamer.

The above-mentioned antifriction agent comprises the following components by weight: 2%-8% of friction modifier, 0.2%-1.8% of antioxidant, 0.3%-1% of antirust additive and the balance of water-insoluble polyether base oil. The performance of the wear reducer prepared with this ratio is better.

In one embodiment, the above-mentioned antifriction agent comprises the following components in parts by weight: friction modifier 2%-8%, antioxidant 0.2%-1.8%, anti-rust additive 0.3%-1%, defoamer 0.001% -0.08% and the balance of water-insoluble polyether base oil.

The present invention also protects the preparation method of the above-mentioned wear reducing agent, comprising the following steps:

Add the remaining water-insoluble polyether base oil into the container, then add friction modifier and anti-rust additive, control the temperature at 80°C-90°C, stir for not less than 40min, and obtain crude oil;

Filter the crude oil to obtain the finished product.

Wherein, the amount of the insoluble polyether base oil added for the first time is 2/3, and the amount added for the second time is 1/3.

The above-mentioned antifriction agent, water-insoluble polyether base oil is easy to form an oil film on the friction surface, has good lubricity, and will not generate sediment and colloid when used at high temperature, and liquid phosphonic acid amine forms on the surface of lubricating parts The chemical reaction film and the adsorption film of additives can increase the strength and thickness of the oil film, reduce the friction coefficient, and effectively prevent the wear of the tooth surface. With the fatty acid ester, it can adsorb the metal surface to form a firm lubricating protective film, which greatly improves the anti-friction performance of the oil. , thereby greatly improving the lubricity of the antifriction agent; and because of its strong ability to resist high temperature, it is not easy to cause the machine oil to be dark, precipitated, and difficult to break the needle.

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

Embodiment one

The antifriction agent described in this embodiment consists of the following components in parts by weight: insoluble polyether base oil 91.12%, liquid phosphonic acid amine 3%, fatty acid ester 4%, ketone amine trimethyldihydroquinoline 0.5% of oligomers, 0.7% of high molecular weight phenolic esters, 0.6% of mercaptothiadiazole derivatives and 0.08% of non-silicon type defoamers.

Embodiment two

The antifriction agent described in this embodiment consists of the following components in parts by weight: 89.85% of insoluble polyether base oil, 4% of liquid phosphonic acid amine, 4% of fatty acid ester, ketone amine trimethyldihydroquinoline 0.9% of oligomers, 0.9% of high molecular weight phenolic esters, 0.3% of mercaptothiadiazole derivatives and 0.05% of non-silicon type defoamers.

Embodiment three

The antifriction agent described in this embodiment consists of the following components in parts by weight: 94.799% of insoluble polyether base oil, 1% of liquid phosphonic acid amine, 3% of fatty acid ester, ketone amine trimethyldihydroquinoline 0.1% oligomer, 0.1% high molecular weight phenolic ester, 1% mercaptothiadiazole derivative and 0.001% non-silicon defoamer.

Embodiment four

The antifriction agent described in this embodiment consists of the following components in parts by weight: 97.37% of insoluble polyether base oil, 1% of liquid phosphonic acid amine, 1% of fatty acid ester, ketone amine trimethyldihydroquinoline 0.1% of oligomers, 0.1% of high molecular weight phenolic esters, 0.4% of mercaptothiadiazole derivatives and 0.03% of non-silicon type defoamers.

Embodiment five

The antifriction agent described in this embodiment is composed of the following components in parts by weight: 91.62% of insoluble polyether base oil, 3% of liquid phosphonic acid amine, 4% of fatty acid ester, 0.7% of high molecular weight phenolic ester, mercaptothiadiene 0.6% of azole derivatives and 0.08% of non-silicon type defoamer.

Comparative example one

This comparative example provides a kind of antifriction agent, is made up of the following components by weight: insoluble polyether base oil 91.12%, fatty acid ester 7%, ketoamine trimethyldihydroquinoline oligomer 0.5%, high 0.7% molecular weight phenolic ester, 0.6% mercaptothiadiazole derivative and 0.08% non-silicon defoamer.

Comparative example two

This comparative example provides a wear reducing agent, which is composed of the following components by weight: 91.12% of insoluble polyether base oil, 7% of liquid phosphonic acid amine, 0.5% of ketoamine trimethyldihydroquinoline oligomer, 0.7% of high molecular weight phenolic ester, 0.6% of mercaptothiadiazole derivatives and 0.08% of non-silicon type defoamer.

Comparative example three

This comparative example provides a kind of antifriction agent, is made up of the following components by weight: insoluble polyether base oil 91.12%, liquid phosphonic acid amine 3%, fatty acid ester 4%, diaryl secondary amine 1.2%, mercaptothiol Oxadiazole derivatives 0.6% and non-silicon type defoamer 0.08%.

Comparative example four

This comparative example provides a kind of antifriction agent, is made up of the following components by weight: insoluble polyether base oil 91.12%, liquid phosphonic acid amine 3%, fatty acid ester 4%, ketone amine trimethyldihydroquinoline 0.5% of oligomer, 0.7% of high molecular weight phenolic ester, 0.6% of emulsified silicone oil and 0.08% of non-silicon type defoamer.

The following will compare the high temperature resistance, oxidation resistance, antirust performance and lubricating performance of the wear reducing agent of the above-mentioned embodiment and comparative examples, and the experimental method is:

High temperature resistance: measured by SH/T 0193 standard (rotary oxygen bomb method). Antioxidant performance: measured by SH/T 0123 standard. Anti-rust performance: GB/T 11143 standard test is adopted. Lubrication performance: measured by SH/T 0189 standard.

See Table 1 for specific results.

It can be seen from the above table that for the friction reducing agent of each embodiment, specific base oil and specific friction modifier are used in Embodiment 1 to Embodiment 4, while only one friction modifier is used in Comparative Example 1 and Comparative Example 2. In terms of, the lubricating performance of each embodiment is better than that of Comparative Example 1 and Comparative Example 2. The anti-friction agent of each embodiment has better high temperature resistance performance, all between 285-300min. In each example, a specific antioxidant is used in combination with a base oil and a friction modifier, while in Comparative Example 3, an antioxidant not limited by the present invention is used in combination with the same base oil and a friction modifier, and the antioxidant performance is reduced. In Comparative Example 4, the antirust agent not limited by the present invention was used, and its repairability decreased to some extent.

The above-mentioned embodiments only express several implementation modes of the present invention, and the description thereof is relatively specific and detailed, but should not be construed as limiting the patent scope of the present invention. It should be noted that for those skilled in the art, without departing from the concept of the present invention, several modifications and improvements can be made, 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

A wear reducing agent is characterized in that it comprises the following components:

A water-insoluble polyether base oil, a friction modifier, an antioxidant and an antirust additive; the friction modifier is a mixture of liquid phosphonic acid amine and fatty acid ester.
The wear reducing agent according to claim 1, characterized in that the liquid amine phosphonate and the fatty acid ester are mixed in a mass ratio of 1:1-3.
The antifriction agent according to claim 1 or 2, characterized in that the antirust additive is a mercaptothiadiazole derivative.
The wear reducing agent according to claim 3, characterized in that, the mercaptothiadiazole derivative is a 1,3,4-mercaptothiadiazole dimer derivative.
The antifriction agent according to claim 1, characterized in that, the water-insoluble polyether base oil is polyethylene glycol ether.
The anti-friction agent according to claim 1, wherein the antioxidant is a mixture of amine antioxidants and phenolic antioxidants.
The wear reducing agent according to claim 6, wherein the amine antioxidant is a ketamine trimethyldihydroquinoline oligomer, and the phenolic antioxidant is a high molecular weight phenolic ester.
The anti-friction agent according to claim 1, characterized in that the anti-friction agent comprises the following components in parts by weight: friction modifier 2%-8%, antioxidant 0.2%-1.8%, anti-rust additive 0.3% %-1% and the balance of water-insoluble polyether base oil.
The wear reducing agent according to claim 8, characterized in that the wear reducing agent comprises the following components in parts by weight: friction modifier 2%-8%, antioxidant 0.2%-1.8%, antirust additive 0.3% %-1%, defoamer 0.001%-0.08%, and the balance of water-insoluble polyether base oil.
A preparation method of the wear reducing agent according to any one of claims 1-9, characterized in that, comprising the steps of:

Add part of the water-insoluble polyether base oil into the container, heat it to 110°C-140°C and keep it for the first time, then add the antioxidant into the container, keep stirring for 15min-30min;

Add the remaining water-insoluble polyether base oil into the container, then add friction modifier and anti-rust additive, control the temperature at 80°C-90°C, and stir for not less than 40min to obtain crude oil;

The crude oil is filtered to obtain the finished product.