WO2017059677A1

WO2017059677A1 - Long-acting steel wire rope hemp core grease

Info

Publication number: WO2017059677A1
Application number: PCT/CN2016/082160
Authority: WO
Inventors: 王爱国
Original assignee: 广州瑞斯盾石油化工有限公司
Priority date: 2015-10-06
Filing date: 2016-05-16
Publication date: 2017-04-13
Also published as: CN105542924A

Abstract

A long-acting steel wire rope hemp core grease, including the following components in weight percentage: 13-17% of a palm wax, 16-19% of a microcrystalline wax, 15-19% of a naphthenic high-viscosity oil, 24-28% of a paraffinic high-viscosity oil, 1.6-4.6% of zinc dialkyldithiophosphate, 1.4-4.4% of nonyl diphenylamine, 4.5-8.5% of vinyl acetate, 8.5-12.5% of polyisobutylene and 0.1-1% of calcium sulfonate. The hemp core grease has a high dropping point, does not flow in hot weather, solidifies quickly on a rope after rope immersion, and has a large kinematic viscosity and good adhesiveness; and a grease film has good fluidity but does not flow in motion and compression processes. Moreover, the hemp core grease is weakly alkaline and can effectively inhibit oxidation, prolonging the safe service life of a steel wire rope, and keeping a use environment clean.

Description

Long-lasting steel wire rope core grease

Technical field

The invention relates to a lubricating protective material which is synchronous with the steel wire rope, anti-oxidation and anti-corrosion, and can provide an oil film in the range of less than 65 ° C, but does not lose, slip, adhesion, water resistance and reversibility, and is particularly long. Effective wire rope hemp core grease.

Background technique

In the processing of the wire rope with the hemp core, the hemp core rope must be immersed in the protective grease heated in the melted state, and can be used after being fully impregnated for a predetermined period of time. Otherwise, during the working period, the metal surface of the inner wall will not be in contact with the protection and lubrication of the good performance grease film, which will cause rust, shorten the life, and fail to produce safely and cause an accident. Even if it is found that lack of protection, it is difficult to supplement. Therefore, it must be ensured that there is enough qualified lubricating and protective material on the inner wall of the wire rope. Only long-term, safe operation can be achieved, mainly by the performance of the core fat and the quality of the infiltration to extend its service life.

At present, the wire rope hemp core commonly used in the domestic market has the following commonalities:

1, low drop point (SH / T0388 standard: 45-55 ° C), hot summer and high temperature, heavy load friction caused by the temperature rise, plus the standard specified kinematic viscosity > 25, easy to flow, resulting in lack of oil and pollution.

2, low kinematic viscosity (SH / T0388 standard > 25) on the market is generally about 30 (equivalent to high-viscosity lubricants), slightly warming, very easy to seep, runny, lack of protection.

Neutral (weakly acidic). It is impossible to inhibit the free acidity generated by oxidation and neutralization, and rust is generated in advance.

Summary of the invention

The object of the present invention is to provide a long-lasting steel wire rope core grease for solving the disadvantages existing in the prior art.

In order to achieve the above object, the present invention adopts the following technical solutions:

A long-lasting steel wire rope core grease, according to the weight percentage, its composition is as follows: palm wax 13-17%, microcrystalline wax 16-19%, cycloalkyl high viscosity oil 15-19%, paraffin based high viscosity oil 24 -28%, zinc dialkyl dithiophosphate 1.6-4.6%, mercapto diphenylamine 1.4-4.4%, ethylene acetic acid 4.5-8.5%, polyisobutylene 8.5-12.5%, calcium sulfonate 0.1-1%.

The preparation process of long-lasting steel wire rope core grease comprises the following steps:

S1, a cycloalkyl high viscosity oil and a paraffin-based high viscosity oil are put into a reaction tank, heated to 130-140 ° C, stirred for 30 min, and dehydrated to obtain a first pre-form.

S2, palm wax, microcrystalline wax, mercapto diphenylamine, ethylene acetic acid, polyisobutylene were successively introduced into the first pre-form obtained in S1, stirring was continued for 30 min, and fully dispersed at 130 ° C to obtain a second pre-form.

S3. In the cooling process of the second pre-form obtained in S2, zinc dialkyldithiophosphate and calcium sulfonate are added, stirred for 10 minutes, and the temperature is lowered to 100 ° C to obtain a semi-finished product.

S4. The semi-finished product obtained in S3 is homogenized, degassed, and packaged to obtain a finished product.

Preferably, the ethylene acetic acid is an ethylene-vinyl acetate copolymer.

Preferably, a long-lasting steel wire rope core grease, by weight, has the following components: palm wax 13%, microcrystalline wax 19%, cycloalkyl high viscosity oil 15%, paraffin based high viscosity oil 28%, two Zinc alkyl dithiophosphate 1.6%, mercapto diphenylamine 1.4%, ethylene acetic acid 8.5%, polyisobutylene 12.5%, calcium sulfonate 1%.

Preferably, a long-lasting steel wire rope core grease, by weight percentage, has the following composition: Palm wax 17%, microcrystalline wax 16%, cycloalkyl high viscosity oil 19%, paraffin based high viscosity oil 24%, zinc dialkyl dithiophosphate 4.6%, mercapto diphenylamine 4.4%, ethylene acetic acid 6.4% , polyisobutylene 8.5%, calcium sulfonate 0.1%.

Preferably, a long-lasting steel wire rope core grease, by weight, has the following components: palm wax 16%, microcrystalline wax 18%, cycloalkyl high viscosity oil 18%, paraffin based high viscosity oil 27%, two Zinc alkyl dithiophosphate 3%, mercapto diphenylamine 2.9%, ethylene acetic acid 4.5%, polyisobutylene 10%, calcium sulfonate 0.6%.

The invention provides a long-lasting steel wire rope core grease, which has the beneficial effects of:

1 palm wax, microcrystalline wax has good compatibility, high melting point (dropping point), and at the same time, it has strong affinity to cycloalkyl high viscosity oil, paraffin-based high viscosity oil, excellent dissolving and dispersing power, and can form rapidly. Lubricate the colloidal structure.

The 2-cycloalkyl high-viscosity oil has a bicyclic structure, and the gel-like structure formed by dissolving palm wax and microcrystalline wax has good shear stability, and the paraffin-based high-viscosity oil dissolves the colloidal structure of palm wax and microcrystalline wax due to itself. The oxidation stability is good, so that the whole system has natural antioxidant stability, and the composite use of the two has the properties of shearing and oxidation resistance.

Zinc dialkyl dithiophosphate is an anti-oxidation, anti-corrosion and dispersing agent, especially combined with an aniline antioxidant, which naturally improves the oxidation resistance. Widely used in a variety of oils, greases, and versatile petroleum additives. At the same time, it contains sulfur, phosphorus and zinc, which satisfies the need of extrusion and friction of hemp core grease, meets the demand for abrasion resistance between steel wires, and satisfies the qualified grease performance of wire rope working state for hemp core. Claim.

4 The combination of ethylene glycol and polyisobutylene polymer increases the kinematic viscosity, adhesion and plasticity, and does not fly, and the structure is stable at -40 ° C -65 ° C.

5 In the present invention, especially the addition of calcium sulfonate not only improves the rust resistance of the whole system, but also changes the neutral-weak acidity of the traditional hemp core resin, within the range meeting the requirements of the SH/T0329 standard. The weakly alkaline body effectively inhibits the oxidation of the system and the free acidity produced by the neutralization system, achieving long-term effects.

DRAWINGS

1 is a flow chart of a preparation process of a long-lasting steel wire rope core resin proposed by the present invention.

detailed description

In order to make the objects, technical solutions and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the specific embodiments. It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The long-acting steel wire hemp core of the present invention, its components play a role in the formulation as follows:

Referring to Figure 1, a preparation process of a long-lasting steel wire rope core grease includes the following steps:

The invention provides a long-lasting steel wire rope core resin, palm wax and microcrystalline wax with good compatibility, high melting point (drop point), and high affinity to cycloalkyl high viscosity oil and paraffin-based high viscosity oil. Excellent dissolution and dispersion, and can quickly form a lubricating colloid structure.

Because the cycloalkyl high viscosity oil is a bicyclic structure, the gel structure formed by dissolving palm wax and microcrystalline wax has good shear stability, and the paraffin-based high viscosity oil dissolves the colloidal structure of palm wax and microcrystalline wax due to its own The oxidation stability is good, so that the whole system has natural anti-oxidation stability, and the combination of the two has the properties of shearing and anti-oxidation.

Zinc dialkyl dithiophosphate is an anti-oxidation, anti-corrosion and dispersing agent, especially combined with an aniline antioxidant, which naturally improves the oxidation resistance. Widely used in a variety of oils, greases, and versatile petroleum additives. At the same time, it contains sulfur, phosphorus and zinc, which satisfies the need of extrusion and friction of hemp core grease, and satisfies the demand for abrasion resistance between steel wires. The working condition of the wire rope is required for the qualified grease performance of the hemp core.

The combination of ethylene acetate and polyisobutylene increases the kinematic viscosity, adhesion and plasticity, and does not fly, and the structure is stable at -40°C-65°C.

In the present invention, especially the addition of calcium sulfonate not only improves the rust resistance of the whole system, but also changes the neutral-weak acid body of the traditional hemp core fat, and is weak in the range meeting the requirements of the SH/T0329 standard. The alkaline body effectively inhibits the oxidation of the system and the free acidic body produced by the neutralization system, achieving long-term effects.

Example 1

A long-lasting steel wire rope core grease, according to the weight percentage, its composition is as follows: palm wax 13%, microcrystalline wax 19%, cycloalkyl high viscosity oil 15%, paraffin based high viscosity oil 28%, dialkyl two Zinc thiophosphate 1.6%, mercapto diphenylamine 1.4%, ethylene acetic acid 8.5%, polyisobutylene 12.5%, calcium sulfonate 1%.

Example 2

A long-lasting steel wire rope core grease, according to the weight percentage, its composition is as follows: palm wax 17%, microcrystalline wax 16%, cycloalkyl high viscosity oil 19%, paraffin based high viscosity oil 24%, dialkyl two Zinc thiophosphate 4.6%, mercapto diphenylamine 4.4%, ethylene acetic acid 6.4%, polyisobutylene 8.5%, calcium sulfonate 0.1%. The preparation process was the same as in Example 1.

Example 3

A long-lasting steel wire rope core grease, according to the weight percentage, its composition is as follows: palm wax 16%, microcrystalline wax 18%, cycloalkyl high viscosity oil 18%, paraffin based high viscosity oil 27%, dialkyl two Zinc thiophosphate 3%, mercapto diphenylamine 2.9%, ethylene acetic acid 4.5%, polyisobutylene 10%, calcium sulfonate 0.6%. The preparation process was the same as in Example 1.

The following is a comparison test between the above three examples and existing products. The data source is the technical supervision department test center.

Comparison of the performance of this product with similar products at home and abroad

Comparing the three examples of the invention with the SH/T0388 product and the imported product: From the data point of view, the inventions 1, 2, and 3 are basically the same in terms of the mass percentage of the two waxes, and the dropping point is uniform. It can be seen that after the two waxes are combined, the difference in the mass fraction is within two ranges, which has little effect. Invention 3 The kinematic viscosity is 9 less than the kinematic viscosity data of Invention 1, and is related to the content of ethylene acetic acid and polyisobutylene. The calcium sulfonate content meets the standard requirements in the case of no more than 1%. Comparing the three invention examples with SH/T0388, the dropping point is 14-16 higher; the kinematic viscosity is 2.4-2.7 times; the oxidation stability is 1.8-2.2 times; SH/T0388 is neutral-weakly acidic. There is no free base, and the low temperature at -40 ° C is unqualified. Compared with imported products, the kinematic viscosity is higher than 24-33; the oxidation stability is 1.6-2 times; the imported product is neutral-weakly acidic, no free alkali, and the low temperature at -40 °C is unqualified. In November 2014, it was reflected in the trial of your rope: better than SH/T0388 core fat, full of oil immersion, fast speed (100 °C), no runny at 65 °C, good adhesion by extrusion flow, -40 °C Cracking, compared with Alaska, low temperature performance, physicality is better than imported, other properties are equivalent.

Claims

The utility model relates to a long-acting steel wire rope core grease, which is characterized in that the components are as follows: palm wax 13-17%, microcrystalline wax 16-19%, cycloalkyl high viscosity oil 15-19%, paraffin base High viscosity oil 24-28%, zinc dialkyl dithiophosphate 1.6-4.6%, mercapto diphenylamine 1.4-4.4%, ethylene acetic acid 4.5-8.5%, polyisobutylene 8.5-12.5%, calcium sulfonate 0.1-1 %.
A process for preparing a long-lasting steel wire rope core resin according to claim 1, comprising the following steps:

S1, a cycloalkyl high viscosity oil and a paraffin-based high viscosity oil are put into a reaction tank, heated to 130-140 ° C, stirred for 30 min, and dehydrated to obtain a first pre-form.

S2, palm wax, microcrystalline wax, mercapto diphenylamine, ethylene acetic acid, polyisobutylene were successively introduced into the first pre-form obtained in S1, stirring was continued for 30 min, and fully dispersed at 130 ° C to obtain a second pre-form.

S3. In the cooling process of the second pre-form obtained in S2, zinc dialkyldithiophosphate and calcium sulfonate are added, stirred for 10 minutes, and the temperature is lowered to 100 ° C to obtain a semi-finished product.

S4. The semi-finished product obtained in S3 is homogenized, degassed, and packaged to obtain a finished product.
A long-lasting steel wire rope core grease according to claim 1, wherein said ethylene acetic acid is an ethylene-vinyl acetate copolymer.
A long-lasting steel wire rope core grease according to claim 1, wherein the composition is as follows: palm wax 13%, microcrystalline wax 19%, cycloalkyl high viscosity oil 15%, paraffin wax Base high viscous oil 28%, zinc dialkyl dithiophosphate 1.6%, mercapto diphenylamine 1.4%, ethylene acetic acid 8.5%, polyisobutylene 12.5%, calcium sulfonate 1%.
A long-lasting steel wire rope core grease according to claim 1, wherein The components are as follows: palm wax 17%, microcrystalline wax 16%, cycloalkyl high viscosity oil 19%, paraffin based high viscosity oil 24%, zinc dialkyl dithiophosphate 4.6%, sulfhydryl group Diphenylamine 4.4%, ethylene acetate 6.4%, polyisobutylene 8.5%, calcium sulfonate 0.1%.
A long-lasting steel wire rope core grease according to claim 1, wherein the composition is as follows: palm wax 16%, microcrystalline wax 18%, cycloalkyl high viscosity oil 18%, paraffin wax Base high viscosity oil 27%, zinc dialkyl dithiophosphate 3%, mercapto diphenylamine 2.9%, ethylene acetic acid 4.5%, polyisobutylene 10%, calcium sulfonate 0.6%.