WO2015020245A1

WO2015020245A1 - Metal surface modifier

Info

Publication number: WO2015020245A1
Application number: PCT/KR2013/007114
Authority: WO
Inventors: 민경일
Original assignee: 영동대학교 산학협력단
Priority date: 2013-08-07
Filing date: 2013-08-07
Publication date: 2015-02-12

Abstract

The present invention relates to a functional metal surface modifier, which is a composition comprising: a polyester derivative having friction modification properties as a base substrate; a 2,5-dimercapto-1,3,4-thiodiazole derivative having properties of an antioxidant and a wear-resistance agent; a tolutriazole compound having functions of an antioxidant and a corrosion inhibitor; glycerol monooleate having a friction modifier function; calcium sulfonic acid salt having properties of a cleansing agent and an extreme pressure additive; dialkyldithiocopper phosphate as the wear-resistant agent and the antioxidant; an acryl-based copolymer and polyalkenyl succinic acid ester, which have a modified dispersing agent property; methylenebis (dibutyldithiocarbamate) as the wear-resistant agent and the extreme-pressure additive; and an organosilicic compound having fatigue-resistant and wear-resistant properties. The functional metal surface modifier of the present invention minimizes abrasion caused by lubrication properties and metal friction by improving properties of petroleum and synthetic hydrocarbon.

Description

Metal surface modifier

The present invention relates to a functional metal surface modifier that improves the properties of petroleum and synthetic hydrocarbons as metal surface modifiers to minimize lubrication characteristics and wear due to friction of metals.

Metallurgical machinery is a method of improving durability and energy efficiency. The use of lubricants not only reduces the friction of the mechanical drive, but also cools the machine and floats combustion products to keep the drive clean and prevent corrosion. It also works to prevent. Therefore, the lubricant should have various properties such as low abrasion resistance, thermal stability, dispersibility, and low evaporation, and improve the energy efficiency of the driving device.

Various types of lubricants are widely used in machines that have moving parts that rub against each other, and these lubricants primarily function to reduce wear and friction between parts, and lubricants, such as protecting metal parts from corrosion, There is another function. Typically, most of the lubricant composition consists of oils, but additives that reduce wear, additives that reduce friction, additives that extend the life of the lubricant, additives for making lubricants useful over a wide temperature range, and additives for many other purposes. Various additives such as are configured as chemical reactions or mixtures.

Many lubrication products are currently on the market and include lubricants or solid products as lubricant additives. Lubricating oil added with solid particles has the advantage of reducing frictional wear, but there is a problem of reducing the performance by generating sediment in the machine when operating for a long time. There is a problem of causing corrosion of the metal by chlorine, and there is a need for an improved lubricating additive in terms of cost and lubricant properties.

Accordingly, the present invention is to provide a surface modifier of a metal that is not a lubricant and an oil additive and does not contain a halogenated compound that induces corrosion of a solid material and a metal.

The metal surface modifier of the present invention is a composition composed of organic and polymeric materials having properties such as anti-wear agents, modified dispersants, corrosion inhibitors, antioxidants, extreme pressure additives, and fatigue resistance, and has excellent wear resistance, thermal stability, and powder resistance when applied to metals. The present invention relates to a functional metal surface modifier that has acidity and high fuel efficiency and at the same time significantly improves sediment protection.

The composition of the functional metal surface modifier includes a polyester derivative having a friction modifier as a base base, a 2,5-dimerocto-1,3,4-thiodiazole derivative having an anti-friction antioxidant and an anti-wear additive property, an antioxidant, Tolutriazole compounds with the function of corrosion inhibitors, glycerol monooleases with friction modifiers, calcium sulfonates with detergent and extreme pressure additive properties, copper dialkyldithiophosphates as antiwear and antioxidants, modified It is composed of acrylic copolymer of dispersant, polyalkenyl succinic acid ester, methylene bis (dibutyldithiocarbamate), 2 ~ 16wt% of fatigue resistant and wear resistant organosilicon compound as antiwear and extreme pressure additive. .

The functional metal surface modifier is a bright amber liquid, unlike what is commonly referred to as an additive, and does not change the properties of oils or lubricants, and may affect other devices used in production technology, manufacturing, metal processing, and the like. It is a big feature that it does not contain microparticles at all.

The functional metal surface modifier of the present invention is generally used for two- and four-cylinder gasoline and diesel engines of all sizes, and for all types of compressors including automobiles, industrial transmissions, differential gears, refrigerators, and reduction gears of assembly lines. It can also be used for box electric motors and pumps.

In particular, it contains no particulates such as Teflon or metal, which can affect the metal equipment, thereby significantly reducing the coefficient of friction, thereby reducing harmful exhaust gases in all gasoline, diesel and motorcycle engines, and reducing friction between metals. It reduces energy consumption by solving problems such as overload, overheating, noise and vibration. In addition, it does not affect the viscosity of other lubricants and maintains the metal surface for a long time even if the oil is changed many times in the engine, and even if all the other initial lubricants are consumed or contaminated by fuel, antifreeze or by-products of combustion materials It protects the metal surface.

Functional metal surface modifier of the present invention 20 to 60wt% polyester derivative, 2-8-dimerceto-1,3,4-thiodiazole derivative 1-8wt%, tolutriazole compound 1 having a function ~ 8wt%, dialkyldithiophosphate 2 ~ 16wt%, acrylic copolymer 0.25 ~ 3wt%, polyalkenyl succinic ester 1 ~ 8wt%, methylene bis (dibutyldithiocarbamate) 1 ~ 8wt%, organosilicon It contains 2 to 16wt% compound, characterized in that composed of one composition.

Hereinafter, various additives used in the present invention will be described in detail.

The polyester derivative consists of a mixture of pentaerythritol tetraester and dipentaerythritol hexaester of C5-C9 fatty acid, has a viscosity of about 4.8 to about 5.2 cSt at 100 ° C., an acid value of 0.05 mgKOH / g, and a water content. It is 0.05wt% or less, has a flash point of 249 ℃, and 20 ~ 60wt% is suitable for the total amount of modifier.

2,5-Dimerocto-1,3,4-thiodiazole derivatives may contain alkyl polycarboxylates and are amber liquids having a density of 1.11 Mg / m ³ , a flash point of 210 ° C. and a viscosity of 21.45 cSt. Gives the surface the function of improving the anti-oxidation and wear resistance. The amount added to the modifier is 2 to 10 wt%, preferably 1 to 8 wt%. Adding more than 10wt% to the modifier is not suitable because it interferes with the expression of other additives.

In addition, the tolutriazole compound which has an antioxidant effect and inhibits corrosion can be 1-di (4-octylphenyl) aminomethyl] tolutriazole, and has a density of 0.963 Mg / m ³ and 182.2 ° C. It has a flash point of and a viscosity of 17.76 cSt and is a dark amber liquid, usually about 50 wt% dissolved in a polyester solvent. The addition of tolutriazole to the modifier is suitable in the range of 1 to 8 wt%, and when tolutriazole is dissolved in the polyester solvent in excess of 8 wt%, the amount of the polyester solvent increases relative to the modifier and thus the characteristics of other additives Problems arise from being exerted.

Glycerol monooleate acts as a modifier to reduce friction between metals and has a viscosity of 10.0 cSt, a flash point of about 242 ° C., a density of about 948 g / l, and an addition amount of 2 to 16 wt% to the modifier is suitable. When it exceeds 16 wt%, the viscosity of the glycerol monooleate is high and the viscosity of the modifier is also high, which causes the modifier itself to harden.

Calcium sulphonate is used to give the surface modifier the characteristics of cleaning agent and extreme pressure additive. It is added in small amount, and it is also possible to use magnesium silicate or calcium and magnesium phenate (phenolic metal salt) in place of calcium sulphonate. % Is appropriate. If it exceeds 3.2wt%, there is a phenomenon that it remains aggregated without dissolving in the modifier.

Copper dialkyldithiophosphate serves to prevent abrasion and oxidation by the friction of the metal, the carbon of the alkyl is 1 to 18, more preferably 2 to 12 carbon atoms, the addition amount of the modifier is 2 to 16 % wt is suitable. When it exceeds 16% wt, it is the same as calcium sulphonate and may aggregate with the modifier and act as an impurity.

The acrylic copolymer is a dispersant of the surface modifier, which functions as a pour point lowering agent of the modifier itself, and preferably polymethyl acrylate having a viscosity of about 1100 to about 1500 cSt at 100 ° C., and the amount of the additive in the modifier is greater than 0.25 to 3 wt%. This is because there is a problem in that the function of the lowering agent is significantly lowered. Polyacrylates other than polymethyl acrylate, polyacrylamide and the like can also be used.

Polyalkenyl succinic acid esters have a function of dispersing insoluble substances produced by oxidation of lubricants in a long time of metal machinery in oil so that they do not clump together or accumulate on the metal surface. Silver is preferably 15,000 or less, and considering the fact that the viscosity of the polyalkenyl succinic acid ester varies depending on the molecular weight, the amount added to the modifier capable of exerting the function of the polyalkenyl succinic acid ester without affecting the viscosity of the modifier is 1 ~. 8 wt% is appropriate. Polyalkenyl succinimide, polyalkenyl succinic acid ester, etc. can also be used.

Mail that act as anti-wear and extreme pressure additives Killen bis (di-view tilde ET Oka mate) will amount to a modifier to dark amber liquid material having a viscosity and flash point of 14.5cSt density, 177 ℃ of 1.054Mg / m ³ is 1 8 wt% is suitable. If the modifier exceeds 8wt%, only the properties of methylene bis (dibutyldithiocarmate) are strongly expressed compared to other additives, so 8wt% or less is appropriate.

In addition, an organosilicon compound is added to improve fatigue resistance. The organosilicon compound is also a material capable of improving abrasion resistance and extreme pressure characteristics. As the organosilicon compound, bis (3-triethoxysilyl-1-propyl) tetrasulfide; Bis (3-triethoxysilyl-1-propyl) disulfide; 1,2-bis- (triethoxysilyl) ethane; 1,4-bis- (triethoxysilyl) butane; 1,6-bis- (triethoxysilyl) hexane; Octyl triethoxysilane and 1,2,4-tris- (2-trimethoxysilylethyl) cyclohexane are possible, and the amount added to the modifier is 2 ~ in consideration of the retention performance of the modifier according to the addition of the organosilicon compound. 16 wt% is suitable.

The lower limit on the amount of the additives added is added to the modifier and constitutes one liquid composition, and means a minimum amount capable of exhibiting each unique characteristic and function of the additive even if the amount of the other additives is changed.

As described above, the functional metal surface modifier of the present invention does not contain any fine particles such as Teflon or metal which may affect a metal device, and each additive is composed of one composition, so that each additive has only a characteristic. The same properties of the and additives are expressed by the synergistic effect that can safely maintain the metal surface. When the metal surface modifier of the present invention is applied to metal, the working principle is as follows.

When a metal surface modifier is applied to the metal surface, it chemically interacts with the metal surface to provide an oil film which is adsorbed on the metal surface by molecular bonds between small pores and molecules in the metal surface to reduce friction on the metal surface.

Chemical reactions occur under friction and load conditions at temperatures between 35 ° C and 70 ° C, and the effect of chemical reactions is to harden the metal surface and to be more robust as the reaction proceeds, and to form a film on the surface of the modifier. Is formed.

Once reacted with the metal to cause molecular bonds (chemical changes), a smoother, stronger chemical film (not a physical film) is formed throughout the homogeneous pores, so that the molecular bonds of the modifiers do not exfoliate from the metal and can repair the metal surface. It provides an optimal high lubrication surface for the micron depth and strengthens through modification to maintain the metal surface for long term durability. Therefore, even if the friction surface of the modified metal surface is contaminated in water, solvent, antifreeze, fine particles, etc., the effect of the surface modifier of the present application is maintained for a certain period of time to protect the friction surface.

In the present invention has been described the effect of the surface modifier of the metal and its working principle, various modifications can be carried out without departing from the scope of the invention. Therefore, the scope of the present invention should not be defined by the surface modifying agent of the metal described, but by the equivalent of the claims and the claims.

Since the metal surface modifier of the present invention is a liquid component containing no solids at all, it can be completely mixed with all types of mineral oil or chemical synthetic oil and used for all four cycle engines, diesel engines, differential gears, power steering, motors, compressors, and the like.

Only by injecting a certain amount of surface modifier, the metal surface is optimized for the depth of several microns, and the high lubrication surface is reformed early to maintain high durability for a long time and greatly reduce frictional damage by friction. It can prevent the deterioration and carbonization of existing lubricants and prevent wear and corrosion of friction surface, which can drastically reduce the purchase cost of consumable metal parts, and can significantly reduce the downtime of mechanical equipment for maintenance. .

Claims

20 to 60 wt% of polyol ester derivative, 1 to 8 wt% of 2,5-dimeractto-1,3,4-thiodiazole derivative, 1 to 8 wt% of tolutriazole compound having function, 2 to 16 wt of glycerol monooleate %, Calcium sulfonate 0.4-3.2 wt%, dialkyldithiophosphate 2-16 wt%, acrylic copolymer 0.25-3 wt%, polyalkenyl succinic ester 1-8 wt%, methylene bis (dibutyldithiocarbamate) A functional metal surface modifier comprising 1 to 8 wt%, 2 to 16 wt% of an organosilicon compound.
The method of claim 1,

The polyol ester derivative is a functional metal surface modifier, characterized in that consisting of a mixture of pentaerythritol tetraester and dipentaerythritol hexaester of C5-C9 fatty acid.
The method of claim 2,

Functional metal surface modifier, characterized in that the acid value of the polyol ester derivative consisting of a mixture of the pentaerythritol tetraester and dipentaerythritol hexaester of the C5-C9 fatty acid is 0.05mgKOH / g.
The method of claim 1,

The 2,5-dimerceto-1,3,4-thiadiazole derivative is a functional metal surface modifier, characterized in that it contains an alkyl polycarboxylate group.
The method of claim 1,

A functional metal surface modifier, wherein the tolutriazole compound is dissolved in a polyester solvent.
The method of claim 5,

The tolutriazole compound is 1-di (4-octylphenyl) aminomethyl] tolutriazole, The functional metal surface modifier characterized in that.
The method of claim 1,

A functional metal surface modifier, wherein the alkyl group of the dialkyldithiophosphate has 2 to 12 carbon atoms.
The method of claim 1,

Functional metal surface modifier, characterized in that the molecular weight of the polyalkenyl succinic acid is 15,000 or less.
The method of claim 1,

The acrylic copolymer is a functional metal surface modifier, characterized in that the polymethyl acrylate.
The method of claim 1,

Examples of the organosilicon compound include bis (3-triethoxysilyl-1-propyl) tetrasulfide; Bis (3-triethoxysilyl-1-propyl) disulfide; 1,2-bis- (triethoxysilyl) ethane; 1,4-bis- (triethoxysilyl) butane; 1,6-bis- (triethoxysilyl) hexane; A functional metal surface modifier, characterized in that it is one of octyl triethoxysilane and 1,2,4-tris- (2-trimethoxysilylethyl) cyclohexane.