阅读说明：本技术 一种钢板桩润滑剂 (Steel sheet pile lubricant ) 是由 杨超 刘中国 魏朝良 张雪涛 于 2020-05-25 设计创作，主要内容包括：本发明公开了一种环保型钢板桩加工专用润滑剂组合物,其组合物组分和含量按质量百分比为：氮化硼固体0.1-10％；乳化剂A2-10％；乳化剂B2-10％；离子液体0.1-10％；基础油余量。本发明的特点是用六边形氮化硼为主润滑剂,用胆碱硫辛酸离子液体作为润滑剂、抗氧剂、耦合剂；并通过复配不同HLB值的乳化剂使得产品均匀、稳定,经水稀释后产品稳定、均匀,且具有优异的极压润滑性。(The invention discloses an environment-friendly lubricant composition special for steel sheet pile processing, which comprises the following components in percentage by mass: 0.1-10% of boron nitride solid; emulsifier A2-10%; emulsifier B2-10%; 0.1-10% of ionic liquid; the balance of base oil. The invention is characterized in that hexagonal boron nitride is used as a main lubricant, and choline lipoic acid ionic liquid is used as a lubricant, an antioxidant and a coupling agent; the emulsifier with different HLB values is compounded to ensure that the product is uniform and stable, and the product is stable and uniform after being diluted by water and has excellent extreme pressure lubricity.)

1. The steel sheet pile lubricant is characterized by comprising the following components in percentage by mass: 0.1-10% of boron nitride solid; 2-10% of emulsifier A; 2-10% of an emulsifier B; 0.1-10% of ionic liquid; the balance of base oil;

wherein the ionic liquid is choline lipoic acid ionic liquid and has the following structure:

2. the steel sheet pile lubricant according to claim 1, wherein the boron nitride solid is hexagonal boron nitride and has a particle size of 1-100 μm.

3. The steel sheet pile lubricant as claimed in claim 1, wherein the emulsifier A is an emulsifier having an HLB value ranging from 8 to 20.

4. The steel sheet pile lubricant according to claim 3, wherein the emulsifier A is at least one of sorbitan fatty acid ester polyoxyethylene ether, condensation product of alkylphenol and ethylene oxide, and nonylphenol polyoxyethylene ether emulsifier.

5. The steel sheet pile lubricant according to claim 4, wherein the emulsifier A is at least one of polyoxyethylene (4EO) sorbitan monostearate (T61), polyoxyethylene (5EO) sorbitan monooleate (T81), polyoxyethylene (20EO) sorbitan monooleate (T80), polyoxyethylene octylphenol ether-10 (OP-10) and nonylphenol polyoxyethylene ether (NP-10).

6. The steel sheet pile lubricant according to claim 1, wherein the emulsifier B is an emulsifier having an HLB value in the range of 0 to 9.

7. The steel sheet pile lubricant according to claim 6, wherein the emulsifier B is at least one of sorbitan fatty acid ester emulsifiers.

8. The steel sheet pile lubricant according to claim 7, wherein the emulsifier B is at least one of sorbitan monooleate (SP80), sorbitan trioleate (SP85), sorbitan tristearate (SP65) and sorbitan monostearate (SP 60).

9. The steel sheet pile lubricant according to claim 1, wherein the emulsifier is compounded as emulsifier A: the proportion of the emulsifier B is 1-60: 100.

10. The steel sheet pile lubricant according to claim 1, wherein the base oil is a mineral base oil.

11. The steel sheet pile lubricant according to claim 10, wherein the base oil is at least one of refined No. 10 transformer oil, -40 transformer oil, -35 transformer oil, -30 transformer oil, refined paraffin-based base oil 60N, 70N, 100N, 150SN, 400 SN.

Technical Field

The invention relates to a lubricating oil composition, in particular to a composition of a lubricating agent suitable for a steel sheet pile production process.

Background

The steel sheet pile is a section steel with locking notch, and its section has straight plate shape, groove shape and Z shape, and has various sizes and interlocking forms. The common forms include Larson type, Lakevanna type, etc. As a reusable green environment-friendly material for foundation structures, the steel sheet pile has the unique properties of high strength, light weight, good water stopping property, strong durability, high construction efficiency, small occupied area and the like. Compared with other construction methods, the steel sheet pile has very obvious construction advantages: (1) the method has the advantages of simplicity, small occupied area for operation, flexible operation and short construction period, and is suitable for implementing quick emergency construction of disasters such as flood, collapse, quicksand and the like; (2) in a severe use environment, the service life can reach 50 years; (3) the construction is environment-friendly, the soil sampling amount and the concrete consumption are greatly reduced, and the land resources are effectively protected; (4) good repeatability, repeated use for 20-30 times in temporary engineering and the like.

In recent years, with the rapid development of economy in China, various novel, efficient and environment-friendly engineering construction technologies and materials are gradually popularized and applied. Due to the unique performance of the steel sheet pile, the construction difficulty of a plurality of large-scale projects in China is solved. For example, in the first-stage projects of Shanghai Changxing island shipbuilding bases, and the great projects of Tangshan Caochien Dian coal wharfs and the like, the consumption of disposable steel sheet piles of the projects reaches ten thousand tons, and good economic and social benefits are obtained.

The steel sheet pile is made by rolling large steel blank or flat steel blank before and after heating to 1250 deg.C in heating furnace, and has complex shape and roll hole shape, which forms the final cross section gradually. The rolled steel sheet pile is cut at a high temperature according to a predetermined product length. During the rolling process, a large amount of lubricant is used for lubricating, cooling and cleaning the special-shaped roller and the steel blank. Compared with the common hot rolling or cold rolling, (1) because the special-shaped rolling rod is used in the production process of the steel sheet pile, when the roller is worn for a certain amount, the shape and the size of the steel sheet pile are greatly influenced, so that a lubricant is required to provide more excellent lubricating property, and the lubricating property of products such as the common hot rolling oil can not meet the requirement; (2) the temperature of the friction pair in the production process of the steel sheet pile is very high, about 500-850 ℃, and a common lubricant is carbonized at the temperature and cannot provide lubricating performance; (3) common solid lubricants, although capable of withstanding high temperatures, are not soluble in water or oil; (4) the product must have both lubricating and cooling properties. (5) With the increasing importance of people on environment, health and safety, the product must not contain elements harmful to the environment, such as chlorine, phosphorus and the like.

At present, no report of a lubricant suitable for the production process of a steel sheet pile exists, some enterprises use graphite powder dispersion liquid as the lubricant, but in the use process, the graphite powder is very easy to block a drain hole, workers have to stop the machine to clean the drain hole, and the production has to be interrupted; in order to achieve the cooling effect, some enterprises use the circulating condensed water as a lubricant, but in the using process, the water cannot provide the lubricating effect for the roller, so that the roller is frequently replaced, and the production cost is seriously increased. Therefore, the research of a lubricant which can maintain excellent lubricating properties at high temperatures, is uniform without precipitation, and is environmentally friendly is a technical problem to be solved in the art.

Disclosure of Invention

In order to solve the problems, the invention provides a lubricant which maintains excellent lubricating performance at high temperature, is uniform, has no precipitate and is environment-friendly. When in production and use, the water is used for diluting to a certain proportion, and the uniformity and the stability can be kept.

The invention provides the following technical scheme: the lubricant composition special for processing the environment-friendly steel sheet pile comprises the following components in percentage by mass: 0.1-10% of boron nitride solid; emulsifier A2-10%; emulsifier B2-10%; 0.1-10% of ionic liquid; the balance of base oil.

In order to realize excellent lubricating performance at high temperature, the invention creatively uses boron nitride as a main lubricant component. Boron nitride has the characteristics of high temperature resistance, moisture resistance and strong oxidation resistance, and can keep excellent lubricity under the working condition that the temperature is less than 1200 ℃, but the boron nitride is difficult to dissolve in a water phase and an oil phase and is difficult to use in a lubricant product. The ionic liquid is used as a coupling agent, so that the dispersion uniformity of boron nitride in a lubricant product is enhanced; in order to form a uniform O/W system for the oil phase of the lubricant product and quickly form a stable W/O system after being diluted by water in use, the emulsifier system suitable for the requirements of the invention is compounded after screening.

The boron nitride solid is hexagonal boron nitride, and the particle size is 1-100 mu m.

The emulsifier A is one or more of emulsifier with HLB value ranging from 8 to 20, sorbitan fatty acid ester polyoxyethylene ether, alkylphenol and ethylene oxide condensation compound and nonylphenol polyoxyethylene ether emulsifier. Particularly preferred is one or more of polyoxyethylene (4EO) sorbitan monostearate (T61), polyoxyethylene (5EO) sorbitan monooleate (T81), polyoxyethylene (20EO) sorbitan monooleate (T80), polyoxyethylene octylphenol ether-10 (OP-10), and nonylphenol polyoxyethylene ether (NP-10).

The emulsifier B is one or more of an emulsifier with an HLB value ranging from 0 to 9 and a sorbitan fatty acid ester emulsifier. Particularly preferred are one or more of sorbitan monooleate (SP80), sorbitan trioleate (SP85), sorbitan tristearate (SP65), and sorbitan monostearate (SP 60).

The emulsifier of the invention is compounded as emulsifier A: the proportion of the emulsifier B is 1:100-3: 5.

The ionic liquid is choline lipoic acid ionic liquid and has the following structure:

the choline lipoic acid ionic liquid has the following characteristics: (1) the liquid state temperature range is wide, the choline lipoic acid ionic liquid can still keep a liquid state at the temperature of more than 300 ℃, the stability is high, the choline lipoic acid ionic liquid has extremely low volatility, no odor and no combustibility, and the choline lipoic acid ionic liquid is easy to generate a tribochemical action with the surface of a friction pair at higher temperature to form a boundary lubricating film with higher bearing capacity and wear resistance, thereby effectively playing an extreme pressure lubricating role. So as to ensure that the oil still has excellent lubricity at high temperature; (2) the boron nitride solid coupling dispersion agent has excellent antioxidation, strong dissolving capacity and dissolution assisting effect, and can effectively couple and disperse the boron nitride solid.

The base oil component of the present invention is a mineral base oil, which is mainly used as a carrier of an additive, and is not particularly limited. Preferably, the oil composition is one or more of refined No. 10 transformer oil, 40 transformer oil, 35 transformer oil, 30 transformer oil and refined paraffin base oil 60N, 70N, 100N, 150SN and 400 SN.

The gain effect of the invention is as follows:

the invention uses hexagonal boron nitride as a main lubricant and uses choline lipoic acid ionic liquid as a lubricant, an antioxidant and a coupling agent. And the emulsifier with different HLB values is compounded to ensure that the product is uniform and stable, and the product is stable and uniform after being diluted by water. The prepared lubricant oil has the following characteristics:

(1) the environment-friendly lubricant special for processing the steel sheet pile, disclosed by the invention, adopts hexagonal boron nitride as a main lubricant, and can still keep good lubricity at high temperature.

(2) The environment-friendly lubricant special for processing the steel sheet pile provided by the invention has the advantages that the selected ionic liquid can still keep excellent lubricating property at high temperature, has excellent antioxidation effect, and can effectively disperse the boron nitride solid lubricant.

(3) The environment-friendly lubricant special for processing the steel sheet pile does not contain toxic, environment-friendly and difficult-to-degrade additive components such as chlorine, phosphorus and the like, and belongs to an environment-friendly product scheme. The post-treatment of the waste oil is easy.

(4) The environment-friendly lubricant special for processing the steel sheet pile adopts an emulsification system compounded by different HLB values, so that the oil phase of the product is uniform and stable, and the working solution diluted by water can keep a uniform and stable state. Is convenient for production and use.

Detailed Description

The following examples illustrate the invention in detail: the present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a process are given, but the scope of the present invention is not limited to the following embodiments.

The blending process of the lubricant special for the environment-friendly steel sheet pile comprises the following steps:

(1) the components are respectively measured according to the proportion for standby;

(2) putting the base oil into a blending kettle, stirring and heating to 40-50 ℃;

(3) adding emulsifier A, emulsifier B and ionic liquid, and stirring for 20-30 min;

(4) then adding solid boron nitride in batches, stirring for 1-2h until the oil product is uniform, and packaging and warehousing.

Example 1

In this example, the components and amounts added are shown in table 1 below:

TABLE 1

Produced according to the above-mentioned preparation process.

Example 2

In this example, the components and amounts added are shown in Table 2 below:

TABLE 2

Produced according to the above-mentioned preparation process.

Example 3

In this example, the components and amounts added are shown in Table 3 below:

TABLE 3

Produced according to the above-mentioned preparation process.

Example 4

In this example, the components and amounts added are shown in Table 4 below:

TABLE 4

Produced according to the above-mentioned preparation process.

Comparative example 1

Comparative example 1 is the scheme of example 3, in which the choline lipoic acid ionic liquid is not added, and the components and the addition amount are shown in the following table 5:

TABLE 5

Produced according to the above-mentioned preparation process.

Comparative example 2

Comparative example 2 is the scheme of example 3 without adding hexagonal boron nitride, and the components and amounts are shown in table 6 below:

TABLE 6

Produced according to the above-mentioned preparation process.

The test method shows that the important oil performance test methods are all the existing standard methods: the extreme pressure lubricity of the oil is tested by adopting a four-ball tester to test a PB value and a PD value (a standard method GB/T3142); the test method for the antirust property of the oil product is liquid-phase rust (standard method ASTM D665B). The results of the performance tests are given in table 7 below:

TABLE 7

The results show that the special lubricant for processing the environment-friendly steel sheet pile has excellent lubricating property, uniform and stable products and uniform and stable product diluent, and is also an environment-friendly lubricant.