阅读说明：本技术 一种具有铜腐蚀抑制功能的植物基基础油 (Plant-based base oil with copper corrosion inhibition function ) 是由 姜程 陈云龙 娄文静 李维民 王晓波 于 2020-04-21 设计创作，主要内容包括：一种具有铜腐蚀抑制功能的植物基基础油,该植物基基础油的分子结构为：<Image he="276" wi="700" file="DDA0002459456850000011.GIF" imgContent="drawing" imgFormat="GIF" orientation="portrait" inline="no"></Image>其中：n＝1、2、3。所述的植物基基础油由甲基苯并三氮唑TTA与环氧大豆油ESO通过化学反应获得,其中环氧大豆油的环氧值≥6.0；其中的ESO与TTA的质量比为10:0.5-2；在95℃及氮气保护下磁力搅拌反应1-4h,反应结束后自然冷却至室温得到棕色透明流体,即为该物基基础油成品。本发明与现有技术相比的优点：通过化学改性手段将甲基苯并三氮唑直接引入到环氧大豆油的分子结构中制备得到植物基基础油,具有良好的铜腐蚀抑制效果,同时解决了甲基苯并三氮唑在润滑油中的溶解性较差的问题。(A vegetable-based base oil having a copper corrosion inhibiting function, the vegetable-based base oil having a molecular structure of: wherein: n is 1, 2, 3. The plant-based base oil is obtained by carrying out chemical reaction on tolyltriazole TTA and epoxidized soybean oil ESO, wherein the epoxy value of the epoxidized soybean oil is more than or equal to 6.0; wherein the mass ratio of ESO to TTA is 10: 0.5-2; magnetically stirring and reacting for 1-4h at 95 ℃ under the protection of nitrogen, and naturally cooling to room temperature after the reaction is finished to obtain brown transparent fluid, namely the finished product of the base oil. Compared with the prior art, the invention has the advantages that: the methyl benzotriazole is directly introduced into the molecular structure of epoxidized soybean oil by a chemical modification means to prepare the plant baseThe base oil has good copper corrosion inhibition effect, and solves the problem of poor solubility of the methylbenzotriazole in the lubricating oil.)

1. A vegetable-based base oil having a copper corrosion inhibiting function, characterized in that the molecular structure of the vegetable-based base oil is:

wherein: n is 1, 2, 3.

2. The plant-based base oil with the copper corrosion inhibition function according to claim 1, wherein the plant-based base oil is obtained by a chemical reaction of methylbenzotriazole TTA and epoxidized soybean oil ESO, and the chemical reaction formula is as follows:

whereinRepresents epoxidized soybean oil, and the epoxy value is more than or equal to 6.0; wherein the mass ratio of ESO to TTA is 10: 0.5-2; magnetically stirring and reacting at 90-120 ℃ for 1-4h under the protection of nitrogen, and naturally cooling to room temperature after the reaction is finished to obtain brown transparent liquid, namely the finished product of the plant-based base oil.

Technical Field

The invention relates to plant-based base oil with a copper corrosion inhibition function, and belongs to the technical field of lubricating materials.

Background

Under the double pressure of resource environment, lubricating oil with good reproducibility and environment-friendly performance becomes one of the main development trends of modern lubricating oil. The total amount of the base oil accounts for more than 80% of the lubricating oil, so the base oil of the lubricating oil is a main factor for determining the environment-friendly performance of the lubricating oil. At present, vegetable oil or vegetable oil derivatives are mostly adopted as base oil in the environment-friendly lubricating oil, and meanwhile, part of functional additives are added to meet the requirement of high performance. The added functional components mainly play an extreme pressure role in containing sulfur compounds, including sulfurized isobutylene, polysulfide, sulfurized fatty acid ester and the like. While improving the bearing performance of the base oil, the active sulfur in the molecule of the sulfur-containing compound can cause corrosion to nonferrous metals such as copper, silver and the like, so a metal passivator is usually required to be introduced for preventing the corrosion of the nonferrous metals by the sulfur-containing additive.

The methylbenzotriazole and the derivative thereof are common metal passivators and are widely applied to hydraulic oil, gear oil and transmission fluid. The corrosion of nonferrous metal parts can be effectively prevented through the chelating action with metals, and the accelerated corrosion of copper ions to carbon steel can also be prevented (CN 200810105654.5; CN201310290058. X; CN201510689345.7CN201210177136.0). Benzotriazole/tolyltriazole is poor in solubility in conventional lubricating oil, so that benzotriazole/tolyltriazole is rarely used alone as a corrosion inhibitor, and a long-chain hydrocarbon compound with good oil solubility is introduced into a molecule of benzotriazole/tolyltriazole by a chemical modification method to improve the solubility of benzotriazole/tolyltriazole in base oil (US 4791206; US 4456539).

Disclosure of Invention

Aiming at the problems that plant-based lubricating oil is required to resist corrosion performance and methylbenzotriazole is poor in solubility in the lubricating oil, the invention provides plant-based base oil with a copper corrosion inhibition function.

The technical scheme of the invention is as follows: the plant-based base oil is obtained by the chemical reaction of Epoxidized Soybean Oil (ESO) and methylbenzotriazole (TTA) (the finished product is named as ESO-TTA).

WhereinRepresents epoxidized soybean oil, and the epoxy value is more than or equal to 6.0.

Wherein the reaction ratio of ESO to TTA is 10:0.5-2 (mass ratio).

Compared with the prior art, the invention has the advantages that: the methyl benzotriazole is directly introduced into the molecular structure of epoxidized soybean oil by a chemical modification means to prepare the plant-based base oil, so that the copper corrosion inhibition effect is good, and the problem of poor solubility of the methyl benzotriazole in lubricating oil is solved.

Drawings

FIG. 1 is an infrared spectrum of a lubricant base oil of the present invention.

Detailed Description

The following examples are presented to enable one of ordinary skill in the art to more fully understand the present invention and are not intended to limit the scope of the embodiments described herein.