阅读说明：本技术 一种用于金属机械精密仪器的润滑材料及其制备方法 (Lubricating material for metal mechanical precision instrument and preparation method thereof ) 是由 李彦林 于 2020-11-26 设计创作，主要内容包括：本发明涉及润滑材料技术领域,尤其涉及一种用于金属机械精密仪器的润滑材料及其制备方法,该润滑材料按重量份包括以下原料：矿物基础油500～1000份、金属氧化物15～25份、添加剂10～12份、偶联剂A 5～9份以及疏水剂5～9份；该润滑材料的制备方法包括以下步骤：S1、按量称取金属氧化物,并将其平均分成4等份,备用；S2、按量称取矿物基础油和添加剂加入到反应釜内,并同时加入催化剂、偶联剂A、疏水剂和一份金属氧化物,搅拌混匀。本发明不仅能够令润滑材料的含水率得以降低,缓解生锈的现象,而且还能有效地改善润滑材料的耐磨效果。(The invention relates to the technical field of lubricating materials, in particular to a lubricating material for a metal mechanical precision instrument and a preparation method thereof, wherein the lubricating material comprises the following raw materials in parts by weight: 500-1000 parts of mineral base oil, 15-25 parts of metal oxide, 10-12 parts of additive, 5-9 parts of coupling agent A and 5-9 parts of hydrophobic agent; the preparation method of the lubricating material comprises the following steps: s1, weighing the metal oxide according to the amount, and evenly dividing the metal oxide into 4 equal parts for later use; s2, weighing the mineral base oil and the additive according to the weight, adding the mineral base oil and the additive into the reaction kettle, simultaneously adding the catalyst, the coupling agent A, the hydrophobic agent and a part of metal oxide, and uniformly stirring. The invention not only can reduce the water content of the lubricating material and relieve the phenomenon of rusting, but also can effectively improve the wear-resisting effect of the lubricating material.)

1. The lubricating material for the metal mechanical precision instrument is characterized by comprising the following raw materials in parts by weight: 500-1000 parts of mineral base oil, 15-25 parts of metal oxide, 10-12 parts of additive, 5-9 parts of coupling agent A and 5-9 parts of hydrophobic agent;

the additive comprises 60% of base material, 25% of filler and 15% of auxiliary agent, wherein the base material is epoxy resin E20, the filler is nano barium carbonate particles, the auxiliary agent is coupling agent B and isopropanol, and the ratio of the coupling agent B to the isopropanol is 2: 1.

2. The lubricant for metal mechanical precision instruments according to claim 1, wherein the metal oxide is a mixed oxide of iron oxide and sodium oxide, and a mixing ratio thereof is 1: 1.

3. The lubricating material for metal mechanical precision instruments according to claim 1, wherein the water repellent agent is an aqueous solution of 1-ethanol-based-3-methylimidazolium bistrifluoromethylsulfonate imine.

4. The lubricant for precision metal mechanical instruments as claimed in claim 1, wherein the coupling agent a is TMC-7 titanate coupling agent and the coupling agent B is silane coupling agent KH 560.

5. The lubricant for metal mechanical precision instruments according to claim 1, wherein the additive is prepared by the following steps: the surface modification of the nanometer barium carbonate particles is carried out by using a silane coupling agent KH 560, and the nanometer barium carbonate particles, epoxy resin E20 and isopropanol are mixed by ball milling, and then 2-ethyl 4 methylimidazole curing agent is added for curing and forming.

6. A preparation method of a lubricating material for a metal mechanical precision instrument is characterized by comprising the following steps:

s1, weighing the metal oxide according to the amount, and evenly dividing the metal oxide into 4 equal parts for later use;

s2, weighing the mineral base oil and the additive according to the amount, adding the mineral base oil and the additive into a reaction kettle, simultaneously adding the catalyst, the coupling agent A, the hydrophobing agent and a part of metal oxide, and uniformly stirring;

s3, adding another part of metal oxide into the reaction kettle every 20 minutes, and continuing to react for 30 minutes after all the metal oxide is added to obtain an intermediate product;

and S4, adding the intermediate product into a high-low temperature alternating test box, and sequentially performing high-temperature treatment and low-temperature treatment for 30-45 minutes to obtain the crystalline lubricating material.

7. The method for preparing a lubricating material for metal mechanical precision instruments according to claim 6, wherein the catalyst is alumina and is added in an amount of 2/3 mass of the sum of the mineral base oil and the additive.

8. The method for preparing the lubricating material for the metal mechanical precision instrument according to claim 6, wherein the temperature range of the high-low temperature alternating test chamber is-20 ℃ to 150 ℃, the temperature rising rate is 1 ℃/min to 3 ℃/min, and the temperature lowering rate is 0.7 ℃/min to 1 ℃/min.

Technical Field

The invention relates to the technical field of lubricating materials, in particular to a lubricating material for a metal mechanical precision instrument and a preparation method thereof.

Background

Precision instruments refer to devices and apparatus for generating and measuring precision quantities, including the observation, monitoring, measurement, verification, recording, transmission, transformation, display, analytical processing and control of precision quantities.

In the use process of the precision instruments, the matching between the parts is particularly important, so that a lubricating material is required to be frequently used for coating the connecting parts of the parts, the existing lubricating material is easy to cause large abrasion degree between the parts due to low abrasion resistance effect, and excessive rusting phenomenon between the parts is caused due to excessive water content in the coated lubricating material.

Therefore, we propose a lubricating material for metal mechanical precision instruments and a preparation method thereof to solve the above problems.

Disclosure of Invention

The invention aims to solve the defects in the prior art and provides a lubricating material for metal mechanical precision instruments and a preparation method thereof.

A lubricating material for metal mechanical precision instruments comprises the following raw materials in parts by weight: 500-1000 parts of mineral base oil, 15-25 parts of metal oxide, 10-12 parts of additive, 5-9 parts of coupling agent A and 5-9 parts of hydrophobic agent;

the additive comprises 60% of base material, 25% of filler and 15% of auxiliary agent, wherein the base material is epoxy resin E20, the filler is nano barium carbonate particles, the auxiliary agent is coupling agent B and isopropanol, and the ratio of the coupling agent to the isopropanol is 2: 1.

Preferably, the metal oxide is a mixed oxide of iron oxide and sodium oxide, and the mixing ratio thereof is 1: 1.

Preferably, the hydrophobic agent is an aqueous solution of 1-ethanol-3-methylimidazolium bistrifluoromethylsulfonate imine.

Preferably, the coupling agent A is a TMC-7 titanate coupling agent, and the coupling agent B is a silane coupling agent KH 560.

Preferably, the preparation process of the additive is as follows: the surface modification of the nanometer barium carbonate particles is carried out by using a silane coupling agent KH 560, and the nanometer barium carbonate particles, epoxy resin E20 and isopropanol are mixed by ball milling, and then 2-ethyl 4 methylimidazole curing agent is added for curing and forming.

A preparation method of a lubricating material for metal mechanical precision instruments comprises the following steps:

s1, weighing the metal oxide according to the amount, and evenly dividing the metal oxide into 4 equal parts for later use;

s2, weighing the mineral base oil and the additive according to the amount, adding the mineral base oil and the additive into a reaction kettle, simultaneously adding the catalyst, the coupling agent A, the hydrophobing agent and a part of metal oxide, and uniformly stirring;

s3, adding another part of metal oxide into the reaction kettle every 20 minutes, and continuing to react for 30 minutes after all the metal oxide is added to obtain an intermediate product;

and S4, adding the intermediate product into a high-low temperature alternating test box, and sequentially performing high-temperature treatment and low-temperature treatment for 30-45 minutes to obtain the crystalline lubricating material.

Preferably, the catalyst is alumina, and the addition amount of the catalyst is 2/3 of the mass sum of the mineral base oil and the additive.

Preferably, the temperature range of the high-low temperature alternating test box is-20 ℃ to 150 ℃, the heating rate is 1-3 ℃/min, and the cooling rate is 0.7-1 ℃/min.

The invention has the beneficial effects that:

1. by adding a proper amount of TMC-7 titanate coupling agent into the prepared raw materials, the compatibility among the raw materials can be promoted, so that the water content in the lubricating material is greatly reduced.

2. By adding the aqueous solution of 1-ethanol-3-methylimidazole bistrifluoromethylsulfonic acid imine as a hydrophobic agent into the prepared raw material, the hydrophobic property of the raw material in the preparation process can be greatly improved, so that the water content in the prepared lubricating material is regulated and controlled.

3. The additive consisting of the base material, the filler and the auxiliary agent is added into the prepared raw materials, and the nano barium carbonate particles are used as the filler of the additive for modification, so that the wear-resisting effect of the finally prepared lubricating material can be obviously improved.

In conclusion, the TMC-7 titanate coupling agent and the aqueous solution of 1-ethanol-based-3-methylimidazole bistrifluoromethylsulfonic acid imine are added into the raw materials, so that the water content of the lubricating material can be reduced, and the rusting phenomenon can be relieved; in addition, the additive is added into the raw materials, so that the wear-resisting effect of the lubricating material can be effectively improved.

Detailed Description

The present invention will be further illustrated with reference to the following specific examples.

A lubricating material for metal mechanical precision instruments comprises the following raw materials in parts by weight: 500 parts of mineral base oil, 15 parts of metal oxide, 10 parts of additive, 5 parts of TMC-7 titanate coupling agent and 5 parts of hydrophobic agent, wherein the metal oxide is a mixed oxide of iron oxide and sodium oxide, the mixing ratio of the metal oxide and the sodium oxide is 1:1, and the hydrophobic agent is an aqueous solution of 1-ethanol-3-methylimidazole bistrifluoromethylsulfonic acid imine;

the additive comprises a base material with the content of 60%, a filler with the content of 25% and an auxiliary agent with the content of 15%, wherein the base material is epoxy resin E20, the filler is nano barium carbonate particles, the auxiliary agent is a silane coupling agent KH 560 and isopropanol, and the ratio of the silane coupling agent KH 560 to the isopropanol is 2: 1;

the preparation process of the additive is as follows: the surface modification of the nanometer barium carbonate particles is carried out by using a silane coupling agent KH 560, and the nanometer barium carbonate particles, epoxy resin E20 and isopropanol are mixed by ball milling, and then 2-ethyl 4 methylimidazole curing agent is added for curing and forming.

A preparation method of a lubricating material for metal mechanical precision instruments comprises the following steps:

s1, weighing the metal oxide according to the amount, and evenly dividing the metal oxide into 4 equal parts for later use;

s2, weighing the mineral base oil and the additive according to the amount, adding the mineral base oil and the additive into a reaction kettle, simultaneously adding the catalyst, the coupling agent A, the hydrophobing agent and a part of metal oxide, and uniformly stirring;

s3, adding another part of metal oxide into the reaction kettle every 20 minutes, and continuing to react for 30 minutes after all the metal oxide is added to obtain an intermediate product;

and S4, adding the intermediate product into a high-low temperature alternating test box, and sequentially carrying out high-temperature treatment at 120 ℃ and low-temperature treatment at-15 ℃ for 30 minutes to obtain the crystalline lubricating material.

The addition amount of the catalyst is 2/3 of the total mass of the mineral base oil and the additive, the temperature range of the high-low temperature alternating test box is-20-150 ℃, the temperature rising rate is 1-3 ℃/min, and the temperature lowering rate is 0.7-1 ℃/min.

Examples one to three examples were prepared of the lubricating material for precision instruments of metal machinery of the present invention, and the amounts of the raw material formulations in the examples are shown in the following table:

the method for preparing the lubricating material comprises the following steps:

s1, weighing the metal oxide according to the amount, and evenly dividing the metal oxide into 4 equal parts for later use;

s2, weighing mineral base oil and an additive according to the weight, adding the mineral base oil and the additive into a reaction kettle, simultaneously adding a catalyst, a TMC-7 titanate coupling agent, a hydrophobing agent and a part of metal oxide, and uniformly stirring;

s3, adding another part of metal oxide into the reaction kettle every 20 minutes, and continuing to react for 30 minutes after all the metal oxide is added to obtain an intermediate product;

and S4, adding the intermediate product into a high-low temperature alternating test box, and sequentially carrying out high-temperature treatment at 120 ℃ and low-temperature treatment at-15 ℃ for 30 minutes to obtain the crystalline lubricating material.

Test is as follows: detecting the wear-resistant effect of the lubricating material

Comparative examples one to three comparative examples a lubricating material for precision instruments of metal machinery according to the present invention was prepared, and the amounts of the raw material formulations in each comparative example are shown in the following table:

	comparative example 1	Comparative example No. two	Comparative example No. three
				Mineral base oil	500	700	1000
Metal oxides	15	20	25
				TMC-7 titanate coupling agents	5	7	9
Water repellent	5	7	9

The preparation method comprises the following steps:

s1, weighing the metal oxide according to the amount, and evenly dividing the metal oxide into 4 equal parts for later use;

s2, weighing mineral base oil according to the weight, adding the mineral base oil into a reaction kettle, simultaneously adding a catalyst, a TMC-7 titanate coupling agent, a hydrophobing agent and a part of metal oxide, and uniformly stirring;

s3, adding another part of metal oxide into the reaction kettle every 20 minutes, and continuing to react for 30 minutes after all the metal oxide is added to obtain an intermediate product;

and S4, adding the intermediate product into a high-low temperature alternating test box, and sequentially carrying out high-temperature treatment at 120 ℃ and low-temperature treatment at-15 ℃ for 30 minutes to obtain the crystalline lubricating material.

Each of the lubricating materials in examples and comparative examples was 30 parts, placed on a table of a friction and wear tester (model MM-200), and the lubricating material was subjected to wear testing at the same speed by the tester, and the friction coefficient and the wear amount thereof were recorded and the average value was calculated, as shown in the following table (wherein "√" indicates that the substance was added and "×" indicates that the substance was not added):

as can be seen from the data in the above table, the friction coefficient is inversely proportional to the wear amount during the wear test, the wear amount is smaller as the friction coefficient is larger, and the wear amount in the examples is much smaller than that in the comparative examples, so that the addition of the additive has a significant effect of improving the wear resistance of the lubricating material.

Test 2: detecting the water content of the lubricating material

Comparative example four (TMC-7 titanate coupling agent and hydrophobing agent were not added):

a lubricating material for metal mechanical precision instruments comprises the following raw materials in parts by weight: 500 parts of mineral base oil, 15 parts of metal oxide and 10 parts of additive, wherein the metal oxide is a mixed oxide of iron oxide and sodium oxide;

the method for preparing the lubricating material comprises the following steps:

s1, weighing the metal oxide according to the amount, and evenly dividing the metal oxide into 4 equal parts for later use;

s2, weighing mineral base oil and an additive according to the amount, adding the mineral base oil and the additive into a reaction kettle, simultaneously adding a catalyst and a part of metal oxide, and uniformly stirring;

s3, adding another part of metal oxide into the reaction kettle every 20 minutes, and continuing to react for 30 minutes after all the metal oxide is added to obtain an intermediate product;

and S4, adding the intermediate product into a high-low temperature alternating test box, and sequentially carrying out high-temperature treatment at 120 ℃ and low-temperature treatment at-15 ℃ for 30 minutes to obtain the crystalline lubricating material.

Comparative example five (no TMC-7 titanate coupling agent added):

a lubricating material for metal mechanical precision instruments comprises the following raw materials in parts by weight: 500 parts of mineral base oil, 15 parts of metal oxide, 10 parts of additive and 5 parts of hydrophobic agent, wherein the metal oxide is a mixed oxide of iron oxide and sodium oxide, and the hydrophobic agent is an aqueous solution of 1-ethanol-group-3-methylimidazole bistrifluoromethylsulfonic acid imine;

the method for preparing the lubricating material comprises the following steps:

s1, weighing the metal oxide according to the amount, and evenly dividing the metal oxide into 4 equal parts for later use;

s2, weighing the mineral base oil and the additive according to the amount, adding the mineral base oil and the additive into a reaction kettle, simultaneously adding the catalyst, the hydrophobing agent and a part of metal oxide, and uniformly stirring;

s3, adding another part of metal oxide into the reaction kettle every 20 minutes, and continuing to react for 30 minutes after all the metal oxide is added to obtain an intermediate product;

and S4, adding the intermediate product into a high-low temperature alternating test box, and sequentially carrying out high-temperature treatment at 120 ℃ and low-temperature treatment at-15 ℃ for 30 minutes to obtain the crystalline lubricating material.

Comparative example six (no hydrophobing agent added):

a lubricating material for metal mechanical precision instruments comprises the following raw materials in parts by weight: 500 parts of mineral base oil, 15 parts of metal oxide, 10 parts of additive and 5 parts of TMC-7 titanate coupling agent, wherein the metal oxide is a mixed oxide of iron oxide and sodium oxide;

a preparation method of a lubricating material for metal mechanical precision instruments comprises the following steps:

s1, weighing the metal oxide according to the amount, and evenly dividing the metal oxide into 4 equal parts for later use;

s2, weighing mineral base oil and an additive according to the amount, adding the mineral base oil and the additive into a reaction kettle, simultaneously adding a catalyst, a TMC-7 titanate coupling agent and a part of metal oxide, and uniformly stirring;

s3, adding another part of metal oxide into the reaction kettle every 20 minutes, and continuing to react for 30 minutes after all the metal oxide is added to obtain an intermediate product;

and S4, adding the intermediate product into a high-low temperature alternating test box, and sequentially carrying out high-temperature treatment at 120 ℃ and low-temperature treatment at-15 ℃ for 30 minutes to obtain the crystalline lubricating material.

The water content of each of the lubricating materials in example one, comparative example four to comparative example six was measured at 30 parts, and the respective values were recorded and the average value thereof was calculated, and the specific data are shown in the following table (wherein "√" indicates that the substance was added and "×" indicates that the substance was not added):

	coupling agent	Water repellent	Water content ratio
				Example one	√	√	0.31％
Comparative example No. four	×	×	10.15％
				Comparative example five	×	√	4.67％
Comparative example six	√	×	3.59％

Wherein, the water content measuring steps are as follows:

putting a lubricating material on an electronic balance, and weighing the lubricating material to be M1;

secondly, turning on a power supply of the oven, adjusting the temperature to 110 ℃, and waiting for the oven to be heated to 110 ℃;

thirdly, when the temperature of the oven reaches 110 ℃, the lubricating material is put into the oven to wait for 2 hours;

fourthly, after 2 hours, taking out the lubricating material, and then putting the lubricating material on an electronic balance to weigh the lubricating material to M2;

calculating the water content of the lubricating material to be (M1-M2)/M1 x 100%.

As can be seen from the data in the table above, the addition of TMC-7 titanate coupling agent or hydrophobing agent to the prepared raw materials can improve the water content of the prepared lubricating material, so that the water content in the lubricating material can be reduced, thereby reducing the probability of rusting, but the addition of TMC-7 titanate coupling agent and hydrophobing agent can greatly reduce the water content in the lubricating material.

In conclusion, the TMC-7 titanate coupling agent and the aqueous solution of 1-ethanol-based-3-methylimidazole bistrifluoromethylsulfonic acid imine are added into the raw materials, so that the water content of the lubricating material can be reduced, and the rusting phenomenon can be relieved; in addition, the additive is added into the raw materials, so that the wear-resisting effect of the lubricating material can be effectively improved.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.