Clean type mine steel wire rope grease and preparation method thereof

Abstract

The application discloses a clean mine steel wire rope grease, which comprises the following components in percentage by mass: an adhesion agent 20-40%, a thickening agent 8-15%, microcrystalline wax 15-25%, a dustproof agent 2-8%, an antioxidant 0.2-1%, a rust inhibitor 1-3%, and the balance of base oil, wherein the sum of the percentage by mass of the above components is 100%. The application further discloses a preparation method of the clean mine steel wire rope grease, which comprises the following steps: mixing the base oil, the adhesion agent, the thickening agent, the microcrystalline wax and the dustproof agent, and then feeding into a mixing kettle; heating and stirring; cooling after complete dissolution; adding the antioxidant and the rust inhibitor; stirring; and discharging the kettle. The mine steel wire rope grease has not only excellent sealing isolation and corrosion prevention performance, but also excellent self-cleaning performance, and can form an elastic solid oil film on the surface of the steel wire rope.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of grease preparation, and particularly relates to a clean mine steel wire rope grease, and also relates to a preparation method of the clean mine steel wire rope grease. BACKGROUND

[0002] The mine steel wire rope is an important component of mine hoisting equipment, and plays an important guarantee role in the safety and economy of hoisting operation. Due to the particularity of the coal mine production conditions, most of the coal mine disaster factors are high, and there are high air humidity, high mine dust proportion, large shaft air speed, high content of high corrosive gases such as carbon monoxide, nitrogen dioxide and gas and the like. These special environments are always threatening the safety of the mine steel wire rope. The mine steel wire rope grease, as the only protective product that can effectively improve the service life of the steel wire rope besides its own quality guarantee, must be developed and produced in the specific environment. The mine steel wire rope grease is required to have good sealing and isolation from the surrounding environment and corrosion prevention effect, and should also avoid embedding between the strands during the movement of the mine dust steel wire rope, and increase the wear between the strands and between the steel wire rope and the pulley during the stress process of the steel wire rope, so as to cause the steel wire rope to break prematurely.

[0003] There are few researches and literature reports on the formula of the steel wire rope grease in China. In terms of the formula, the base oil is mainly extracted oil and wax oil, and the thickening agent is mainly phenolic resin, petroleum resin and polyethylene wax. In terms of the performance of the product, the protective requirements of the product on high corrosive gas and high mine dust proportion are not considered. SUMMARY

[0004] The purpose of the present application is to provide a clean mine steel wire rope grease, which has excellent self-cleaning performance and can form a protective oil film on the surface of the steel wire rope.

[0005] Another purpose of the present application is to provide a preparation method of the clean mine steel wire rope grease.

[0006] The technical scheme adopted by the present application is that the clean mine steel wire rope grease comprises the following components in percentage by mass: 20-40% of an adhesion agent, 8-15% of a thickening agent, 15-25% of a microcrystalline wax, 2-8% of a dust-proof agent, 0.2-1% of an antioxidant, 1-3% of an anti-rust agent, and the balance of base oil, and the sum of the mass percentages of the above components is 100%.

[0007] The present application is also characterized in that,

[0008] The base oil is a middle base non-hydrogenated mineral oil, and the kinematic viscosity at 100 DEG C is 20-40 mm 2 / s.

[0009] The adhesion agent is PIB with a molecular weight of 1000-3000 and a kinematic viscosity of 20000-220000 mm 2 / s.

[0010] The thickening agent is a Fischer-Tropsch wax with a molecular weight of 500-1000 and a melting point of 95-120 DEG C.

[0011] The dust-proof agent is a solid oxidized polyethylene wax with a molecular weight of 95-120 DEG C.

[0012] The antioxidant is di-tert-butyl-p-cresol or di-tert-butyl-cresol.

[0013] The rust-proof agent is basic rust-proof agent T701 and acidic rust-proof agent T746, and the mass ratio of the basic rust-proof agent T701 to the acidic rust-proof agent T746 is 1:1.

[0014] Another technical solution of the present application is a preparation method of the clean mine steel wire rope grease, which comprises the following steps: mixing base oil, an adhesion agent, a thickening agent, microcrystalline wax and a dust-proof agent, feeding into a mixing kettle, heating to 120-130 DEG C, mechanically stirring for 2 hours, cooling to 100 DEG C, adding an antioxidant and a rust-proof agent, and continuously stirring for 2 hours, and then discharging the kettle to obtain the clean mine steel wire rope grease.

[0015] The mine steel wire rope grease has excellent sealing isolation and corrosion prevention performance, and has excellent self-cleaning performance, can form an elastic solid oil film on the surface of the steel wire rope, and can make the sand grains separate from the surface of the steel wire rope in the case of vibration of the steel wire rope. The protective oil film formed on the surface of the steel wire rope has large thickness and hardness, and even if the sand grains adhere to the surface of the steel wire rope due to the environment or other reasons, they will not enter the steel wire rope strands or the inside, and the large sand grains will automatically fall off during the operation of the steel wire rope, avoiding scratches or increased wear of the steel wire rope. DETAILED DESCRIPTION

[0016] The present application will be described in detail below in combination with specific embodiments.

[0017] The clean mine steel wire rope grease of the present application comprises the following components in percentage by mass: 20-40% of the adhesion agent, 8-15% of the thickening agent, 15-25% of the microcrystalline wax, 2-8% of the dust-proof agent, 0.2-1% of the antioxidant, 1-3% of the rust-proof agent, and the balance of the base oil, and the sum of the mass percentages of the above components is 100%.

[0018] The base oil is a high-viscosity intermediate-based non-hydrogenated mineral oil with a kinematic viscosity of 20-40 mm 2The intermediate base non-hydrogenated mineral oil has good solubility to the adhesion agent and the thickening agent of the polymer, can not only give the product excellent lubricating performance, but also can ensure the stability of the product system, and makes the oil film of the steel wire rope grease more uniform.

[0019] The adhesion agent is PIB, the molecular weight of which is between 1000 and 3000, the kinematic viscosity at 40 DEG C is between 20000 and 220000 mm 2 The application of the adhesion agent is to improve the kinematic viscosity of the product, thereby improving the strength of the steel wire rope grease film and preventing the grease film from being broken under the extrusion of external force.

[0020] The thickening agent is Fischer-Tropsch wax, the molecular weight of which is between 500 and 1000, the melting point is between 95 and 120 DEG C. The dropping point of the microcrystalline wax is between 60 and 100 DEG C. The Fischer-Tropsch wax is used as the thickening agent mainly to give the steel wire rope grease good high-temperature use performance. The polyethylene wax is added as the dust-proof agent mainly to ensure that the solid oil film of the product has a certain elasticity, and helps the gravel to fall off when the steel wire rope vibrates.

[0021] The dust-proof agent is solid oxidized polyethylene wax, the molecular weight of which is between 95 and 120 DEG C.

[0022] The antioxidant is di-tert-butyl-p-cresol or di-tert-butyl-cresol, the melting point of which is between 60 and 75 DEG C.

[0023] The rust-proof agent is basic rust-proof agent T701 and acidic rust-proof agent T746, and the mass ratio of the basic rust-proof agent T701 and the acidic rust-proof agent T746 is 1:1.

[0024] The addition of the antioxidant and the rust-proof agent can effectively improve the oxidation resistance and rust resistance of the steel wire rope grease. The above components are dispersed at high temperature and high speed to form a uniform and stable thickening system, which is uniformly coated on the steel wire rope wire, rope strand and product rope surface by the way of hot coating, plays a role of sealing and isolating harmful gas and dust for the mine steel wire rope, and can effectively prolong the service life of the steel wire rope.

[0025] The preparation method of the clean mine steel wire rope grease of the present application is as follows: the base oil, the adhesion agent, the thickening agent, the microcrystalline wax and the dust-proof agent are mixed and put into a mixing kettle, heated to 120-130 DEG C, mechanically stirred for 2 hours, cooled to 100 DEG C after complete dissolution, the antioxidant and the rust-proof agent are added, and the stirring is continued for 2 hours, and the kettle is discharged to obtain the clean mine steel wire rope grease.

[0026] Example 1

[0027] The preparation method of the clean mine steel wire rope grease of the present application is as follows:

[0028] Put base oil 25g, adhesive 25g, thickening agent 9g, microcrystalline wax 15g and dustproof agent 3g into the mixing kettle, heat to 120℃, mechanically stir for more than 2 hours, after complete dissolution, cool to 100℃, add antioxidant 0.5g and antirust agent 1g, continue to stir for 2 hours, and take out the kettle.

[0029] Example 2

[0030] The preparation method of the clean mining steel wire rope grease of the present application is specifically:

[0031] Put base oil 35g, adhesive 30g, thickening agent 12g, microcrystalline wax 20g and dustproof agent 6g into the mixing kettle, heat to 125℃, mechanically stir for more than 2 hours, after complete dissolution, cool to 100℃, add antioxidant 0.8g and antirust agent 2g, continue to stir for 2 hours, and take out the kettle.

[0032] Example 3

[0033] The preparation method of the clean mining steel wire rope grease of the present application is specifically:

[0034] Put base oil 45g, adhesive 38g, thickening agent 15g, microcrystalline wax 25g and dustproof agent 7g into the mixing kettle according to the proportion, heat to 130℃, mechanically stir for more than 2 hours, after complete dissolution, cool to 100℃, add antioxidant 1g and antirust agent 3g, continue to stir for 2 hours, and take out the kettle.

[0035] Comparative Example

[0036] The ordinary steel wire rope grease is used as a comparative example, and its composition is high-viscosity mineral oil, petroleum wax paste, microcrystalline wax and rust-proof additive, and the typical data are shown in Table 1. It can be seen that the adhesion performance, corrosion performance and low-temperature performance of the steel wire rope grease of the present application are all better than those of the steel wire rope grease in the comparative example.

[0037] Table 1: Test data of example samples and typical data of comparative example

[0038]

[0039]

[0040] The present application adopts high-viscosity intermediate-based non-hydrogenated mineral oil mainly to ensure good solubility of the product to solid thickening agent; and together with the adhesion agent, the product oil film has good load-carrying capacity, and the oil film does not break under the condition of rope strand stress and impact of sand and stone; the fischer-tropsch wax as the thickening agent is to better give the product stable high-temperature use performance and adhesion; the solid oxidized polyethylene wax is used as the dust-proof agent to better disperse in the product system, increase the elasticity of the steel wire rope grease oil film, and better help the sand and dust to fall off; the phenolic antioxidant is used as the antioxidant to prevent the steel wire rope grease oil film from aging too early and producing corrosive substances; the alkali and acid rust-proof agents are reasonably matched as the rust-proof agent to better form a dense oil film on the surface of the steel wire rope, prevent corrosive substances from entering the surface of the steel wire rope body, and produce rust.

[0041] The clean type mine steel wire rope grease product of the present application has excellent self-cleaning performance in addition to excellent sealing isolation and corrosion prevention performance, the protective oil film formed on the surface of the steel wire rope has large thickness and hardness, sand particles entering the steel wire rope strand or inside due to environment or other reasons are prevented, and large sand particles also automatically fall off during the operation of the steel wire rope, avoiding scratches or increased wear of the steel wire rope.

Claims

1. A clean type mine wire rope grease, characterized by, By mass percent, the following components are included: 20-40% of an adhesive, 8-15% of a thickening agent, 15-25% of microcrystalline wax, 2-8% of a dust-proof agent, 0.2-1% of an antioxidant, 1-3% of a rust-proof agent, and the balance of base oil; The base oil is intermediate-based non-hydrogenated mineral oil, 100℃ kinematic viscosity is 20~40mm 2 / s; the antioxidant is di-tert-butyl-p-cresol; the rust inhibitor is basic rust inhibitor T701 and acidic rust inhibitor T746, the mass ratio of the basic rust inhibitor T701 and the acidic rust inhibitor T746 is 1:1; The adhesive is PIB with a molecular weight of 1000-3000 and a kinematic viscosity at 40°C of 20000-220000 mm 2 The thickening agent is a Fischer-Tropsch wax with a molecular weight of 500-1000 and a melting point of 95-120°C.

2. The preparation method of the clean-type mining wire rope grease as described in claim 1, characterized in that, Specifically, the base oil, the adhesive, the thickening agent, the microcrystalline wax and the dust-proof agent are mixed and put into a mixing kettle, heated to 120-130 DEG C, mechanically stirred for 2 hours, cooled to 100 DEG C, the antioxidant and the rust-proof agent are added, and the stirring is continued for 2 hours, the kettle is discharged, and the clean type mine steel wire rope grease is obtained.

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