WO2014101923A1

WO2014101923A1 - Method for producing multifunctional protective film

Info

Publication number: WO2014101923A1
Application number: PCT/EA2013/000015
Authority: WO
Inventors: Абдурашид Содикович ВОХИДОВ
Original assignee: Общество С Ограниченной Ответственностью "Автостанкопром"
Priority date: 2012-12-28
Filing date: 2013-11-14
Publication date: 2014-07-03
Also published as: EP2940087A1; EP2940087A4; EA025491B1; EA201300154A1; EP2940087B1

Abstract

The present invention relates to technological methods for coating surfaces of a solid material (a solid body) and producing a multifunctional protective nanosized film, in particular for modifying surfaces with the purpose of improving the properties thereof, and can be used in instrument engineering, electronics, mechanical engineering, a fuel and energy complex, housing and utilities, and other industries, for example, in microelectronics, when producing parts with pre-determined properties, and for AI systems. The method for producing a protective film on at least part of the surface of a solid body comprises a pre-treatment of the surface, the application of a composition formulation based on a fluorine-containing surfactant to the solid body surface which has been heated further following the pre-treatment and which has a roughness Ra from 0.001 µm to 2.5 µm, and curing the substance. The technical result that can be achieved by using the invention is an increase in the technological effectiveness of protective film production while extending the application scope.

Description

METHOD FOR PRODUCING MULTIFUNCTIONAL

PROTECTIVE FILM

FIELD OF THE INVENTION

The present invention relates to technological methods used to coat surfaces, solid material (body) and obtain a multifunctional protective nanoscale film, in particular, to modify surfaces in order to improve their properties, and can find application in instrumentation, electronics, mechanical engineering, fuel and energy complex, housing and communal services and other industries, for example, in microelectronics, in the manufacture of parts with desired properties, systems with artificial intelligence.

BACKGROUND

The patent of the Russian Federation N22095386, publ. 10.1 1.1997, IPC C09D5 / 18. A method is known for producing a fire retardant coating on various surfaces, including applying a composite composition and curing it. For application, a composite composition is used, including a polymeric binder, a fibrous filler, a powder filler, a flame retardant, flotation sludge and water. The disadvantages of this method is its multi-stage, not providing sufficient adhesion of the coating to the surface, which reduces the wear resistance of the resulting coating.

The prior art method for producing a lubricating-absorbing coating, RF patent Ns 2429284, publ. 08/27/2010, MPK S YuM 147/04, including surface degreasing, drying and subsequent spraying of the composition from a distance of 0.1 to 0.5 m. After spraying the composition, the lubricated surface is maintained at a temperature of + 16 to + 32 ° C to full evaporation of light refrigerant fractions. The method is intended for applying the composition to metal surfaces in order to protect against corrosion. By selecting the volume of the composition and the time of final readiness, the lubricated surface is formed on 2013/000015

2

the prepared surface is a monomolecular film with a thickness of 1.0 to 7.0 nm.

The patent of the Russian Federation Ns2269557, publ. 02/20/2005, IPC C09D127 / 1, on the invention "Inhibitory coating from operational deposits and the method of its production." The patent discloses a method for producing an inhibitory coating on a metal surface. The surface to be coated is thoroughly cleaned, in particular, it is disinfected with acetone or white spirit by 3-4 times lowering the plate in a solvent bath, after which the product is kept in air for 5-10 minutes to remove solvent vapor. Before spraying, the plate is preheated. The heating temperature depends on the wall thickness of the metal product and exceeds the working temperature of the deposition. After reaching the required temperature, the product is kept in the oven for 30 minutes. Obtaining a 3-layer inhibitory coating of the polymer is carried out by spraying in an electrostatic field. After melting the last layer, the polymer-coated plate is kept in the apparatus for 5-6 hours at a temperature of 220-230 ° C. The thickness of the resulting coating is 210-240 microns. As an inhibitory coating, a 3-4-layer coating is used, made of powdered dried to a moisture content of not more than 3 wt. polytetrafluoroethylene or polytrifluorochlorethylene stabilized in acetylene by wetting the polymer powder with a solution of stabilizer Diaphen NN, obtained by dissolving the stabilizer - Diaphen NN in acetone when heated to 40 ° C, drying the mixture of polymer and stabilizer at room temperature, final - at 80-100 ° C for 5 hours and calcination at 210 ° C for 1 h, and aged for 5-6 hours at a temperature of 220-230 ° C.

The disadvantage of this method is its low manufacturability due to the complex multi-stage surface treatment. In addition, the inhibitory composition used does not contain a liquid substance, which significantly limits the scope of the known method. ^• From the patent of the Russian Federation NQ2139902 (prototype), publ. 10/20/1999, IPC C09D127 / 12, known "Method for producing a polymer antifriction coating" (Author (s): Gurinovich EG and others), describing a method for producing a polymer antifriction coating [3], including cleaning the surface with a degreasing agent, drying the cleaned surface at 20-200 ° С, applying the antifriction composition of epilam - 0, 1 -10.0% solution of an organofluorine surfactant (Fluorosurfactant) - a perfluoropolyoxyalkylene or perfluorinated polyalkylene oxide compound by immersing the product in this solution or aerosol spray and heat treatment of the coating. The disadvantage of this method is that when applying a freon-containing ozone-hazardous composition (the use of ozone-depleting freons is prohibited by the Montreal agreement) by dipping or spraying (including aerosol) without heating the treated surface, it is impossible to obtain uniform and uniform in thickness and operational coating properties. The method is not applicable according to safety requirements when processing large and heavy products with a high level of surface roughness without the use of specialized plants.

In addition, the disadvantage of these analogues is the impossibility of coating in hard to reach areas of the surface of the object to be coated.

SUMMARY OF THE INVENTION

The problem to which the invention is directed is to create a new technologically advanced method for producing a multifunctional protective nanofilm (coating) for various applications.

The technical result achieved by using the invention is to increase the manufacturability of a protective film while expanding the scope.

The task and the required technical result are achieved by the fact that the method of obtaining a protective film in at least part the surface of a solid body, including preliminary surface preparation, applying a composition based on a fluorine-containing surfactant and thermofixing a substance according to the invention, the composition is applied to a surface of a solid body additionally heated after preparation with a roughness level Ra from 0.001 μm to 2.5 μm.

In an additional aspect, the invention is characterized in that the surface is heated in a temperature range from 28 ° C to 48 ° C.

In yet a further aspect, the invention is characterized in that the composition is applied to obtain a protective film with a thickness of 3-10 nm, preferably 1-8 nm, and with an arithmetic mean surface roughness of 2.4 nm to 3.7 nm, preferably 1, 6 nm to 2.3 nm.

In another additional aspect, the invention is characterized in that the application of the composite composition to the surface is carried out by immersion, spraying, lubrication, aerosol spraying, active or passive plugging, and the spraying is carried out manually or in automated installations.

In a still further aspect, the invention is characterized in that a solution of a fluorine-containing surfactant is used as the composition, further comprising at least one modifying additive.

In yet a further aspect, the invention is characterized in that a perfluoropolyether group polymer with a molecular weight of more than 2000 having the general structural formula is used as a fluorine-containing surfactant

where n is the total number of this element, in the range inclusive. or

X] - [CF ₂ 0] _n - [C2F ₄ 0YS ₃ RbO] | -X ₂

where n + m + 1 = 5 + 50, and each of Χι and X _{2 is} independently selected from the group: CT3, -C2F5 or -C3F7.

In yet a further aspect, the invention is characterized in that a solution containing a fluorine-containing surfactant in an amount of from 0.2 wt.% To 18.5 wt.% Is used, with freon, alcohol, chladis, water or any possible combination thereof, and a corrosion inhibitor, anti-friction additive, bactericidal additive, or any possible combination thereof is used as a modifying additive.

In yet a further aspect, the invention is characterized in that thermofixing is carried out in the temperature range from 67 ° C to 11 ° C for 45 minutes to 1 17 minutes.

In another additional aspect, the invention is characterized in that after applying the composite composition, drying is additionally carried out in the open air in the temperature range from 22 ° C to 39 ° C for 3 to 5 minutes.

A significant difference of the claimed invention is a one-step deposition of a protective film on the heated surface of a solid with a roughness level Ra from 0.001 μm to 2.5 μm, in the process of which each. the film molecule interacts with the surface independently with the formation of a chemisorbed multifunctional nanofilm. The proposed method allows to obtain an increased level of monomolecularity and continuity of the coating. Received by the proposed method _. nanoscale multifunctional film reduces the coefficient of friction and reduces the abrasion of surfaces in the nodes of tribological systems, protects against corrosion, reduces the influence of salt fog, steam, radiation, inhibits the activity of microorganisms. The separation of the coating from the surface, if it occurs, occurs in the same molecular manner, which excludes the presence of large insoluble agglomerates in the oil. The proposed ^method, providing interaction of the composition with surfaces on a new physico-chemical basis; allows you to apply the specified composition on metallic, non-metallic and polymer surfaces, including conductive and dielectric, in hard-to-reach places, for example, in the internal parts of an electronic device, microchip, printed circuit board with installed blocks, due to which, together, the claimed technical result is achieved, and namely increasing the manufacturability of obtaining a protective film while expanding the scope.

BRIEF DESCRIPTION OF THE DRAWINGS

In FIG. 1a - a profilogram of the surface of the protective film is shown. .

In FIG. 16 - shows a profilogram of the density of molecules of the protective film.

In FIG. 2 - shows a chemisorption model of a fluorine-containing surfactant after applying the composition.

In FIG. 3 - depicts the consumption rates of the composition on the coating surface to obtain a multifunctional protective nanofilm.

DETAILED DESCRIPTION OF THE INVENTION

For applying a composite composition (composition), surfaces of solids with a roughness level Ra from 0.001 μm to 2.5 μm are used, which may be, for example, metal, alloy, glass, polymeric products, rubber products, fiberglass, printed circuit boards, etc.

The surface of a solid body is thoroughly degreased with modern fluorine-containing or alcohol-containing solvents using ultrasonic equipment or special degreasing chambers. Cleaning and degreasing allows you to open the micropores of the surface to bring the molecular-molecular absorption and activation of the surface modification into an active state. ^' Before direct application of the composition, a clean, fat-free surface is heated at temperatures from 37 ° C to 48 ° C. It is important to note that heating the surface to a temperature below 37 ° C does not open the surface micropores for adsorption of molecules of the composition. Heating the surface to temperatures above 48 ° C does not ensure the creation of a uniform sorption layer.

As a composition, a fluorine-containing surfactant solution is used, further comprising at least one modifying additive, for example, a corrosion inhibitor, an anti-friction additive, a bactericidal additive, and other constituent components. In the particular case of the invention, the choice of additives is determined by the specific field of application of the proposed method, and it is possible to use any possible combination of modifying additives.

As a fluorine-containing surfactant, a polymer of the group of perfluoropolyethers with a molecular weight of more than 2000 having the general structural formula is used

where n is the total number of this element, in the range of 1 -13 inclusive; or

Xi- [CF ₂ 0] ri- [C ₂ F4 0] m- [C ₃ F60] iX ₂

where n + m + l = 5 ^ 50, and each of Xi and X _{2 is} independently selected from the group: CF3, -C2F5 or -C3F7.

The polymer may be of several types or groups, as a joint application. fluorine-containing surfactants of various structures, some of which are anionic, the other part is cationic in nature, leads to the formation of sorption (adsorption) layers that are extremely tightly bound to the surface of the metal (solid).

Preferably, a fluorine-containing surfactants having terminal groups - CF _3, since they are more active in the process of film formation. It is important to note that the length of the molecule attached surfactant (surfactant) is selected based on the purpose of the protective film: the longer the molecule, the less the influence of a solid surface. With short molecules, the surface can be further shielded. With long molecules, the solubility of the surfactant decreases. The chemical nature of the fluorine-containing surfactant (high strength of С-О and CF bonds, spatial protection provided by fluorine atoms) determines the high stability of the compounds, making them suitable for use in aggressive environments. It should also be noted that the use of fluorine-containing surfactants with a molecular weight of less than 2000 does not allow to obtain a uniform film layer, since there is an insufficient density of the molecular weight of the substance of the composition.

The solvent used is freon, alcohol, chladis, water, or any combination thereof. The choice of these substances as a solvent is due to the fact that it is necessary to ensure the complete solubility of fluorine molecules and other structural elements, provided that the substances are fully compatible without impairing functional properties. Fluorine-containing _. Surfactants in solution are used in an amount of from 0, 2 wt. up to 18.5 wt.%. It is important to note that the use of a fluorine-containing surfactant in an amount of less than 0.2 wt.% Does not ensure the creation of a uniform film layer. The use of a fluorine-containing surfactant in an amount of more than 18.5 wt.% Does not lead to the observance of the conditions of the density of distribution of molecules and the interval between them. ^''

After applying the composite composition for complete deposition and the creation of chemical bonds with the surface, the film is thermofixed in the temperature range from 67 ° C to 11 ° C for 45 to 11 minutes. Before thermofixing, drying is additionally carried out in the open air at a temperature of 22 ° C to 39 ° C for 3-5 minutes, during which adsorption of the monomolecular film layer on the surface begins. Should note that the indicated temperature and time ranges, both thermal fixation and drying, are optimal for uniform film fixing.

. In private embodiments of the invention, the application of the composite composition can be carried out on at least part of the surface, for example, equipment or parts or on the entire surface of these parts or equipment.

The proposed method for applying a protective film to a heated surface of a solid body with a roughness level Ra from 0.001 μm to 2.5 μm makes it possible to obtain an increased level of monomolecularity and continuity of the coating along the surface profile in accordance with the normal laws of the Gaussian and Laplace distribution, where the probability of a molecule falling on the surface interval a, b is determined by the principle:

The intervals a and b determine the distribution parameters (boundaries) and represent a uniform distribution.

An illustration of the profilogram of the surface and density of molecules is shown in FIG. 1 a and FIG. 1 b, respectively. As can be clearly seen, FIG. 1a shows the level of coverage and smoothing of the surface — obtaining a uniform layer with an investigated interval of the dimension of the total surface space of 40-60 nm and the presence of a coating with a low level of thickness within the dimension up to 120 nm, associated with the existing level of surface roughness. As can be clearly seen, FIG. 16 shows the level of smoothing - the profile of the film when leveling the surface.

During heat setting, the film is uniformly fixed. The monomolecular, interconnected coating obtained as a result of thermal fixation of the composition is continuous and dense ^, hydrophobizes the surface and completely eliminates surface contact, including conductive, with moisture, and with other aggressive components, exposure to radiation. The nature of the resulting coating is on average consistent with the theoretical concept of Langmuir-Blodgett surfaces. The height of the "pile"("Langmuirstockade") is from 3 to 10 nm, preferably from 1 to 8 nm, the coating is uniform, without visible bursts; the surface roughness of the film coating: rms - 3.5 nm, preferably 2 nm, arithmetic mean - 3, 1 nm, preferably 1, 6 nm. An illustration of a profilogram of the surface of a multifunctional protective film of a fluorine-containing surfactant obtained by the method according to the invention is shown in FIG. 1.

Molecules of compositional composition are located close to each other on the surface of a solid body. The spiral-shaped polar molecules of these substances, when coating solid metal surfaces, are able to capture electrons. Molecules of fluorine and modifying additives (for example, corrosion inhibitors, polymers of bactericidal activity) that are part of the composition, interact with these electrons, forming a single chemical structure with a coated surface. In most cases, coatings of the surface of glass, ceramics, polymers, rubber, minerals, and other polymeric and nonmetallic surfaces, molecules of compositional composition are chemisorbed with the surface due to interaction with the ionic structure, hydrogen bridges, temperature crystallization, dispersion and capillary forces. Taking into account the specific resistance of semiconductors over a wide range (from 10-4 to 109 ohm cm), some semiconductors (silicon carbide, selenium, tellurium, etc.) change their electrical resistance with increasing voltage applied to them or under the influence of light radiation. Coating with a composite composition does not change the parameters of conductivity and dielectricity, helps to reduce the influence of external aggressive factors, which allows to expand the scope of the proposed method.

In general, a general chemisorption model is shown in FIG. 2. Due to the spiral structure of the non-polar suit of the composition according to the invention, the fixed fluorine molecules are able to retain lubricants, prevent dry friction by creating a boundary shock absorption layer in the friction zone and surface dynamics, the effect of radiation and background charge is reduced, the activity of the development of bacteria on the surface, gas permeability and destruction are reduced surface. The multifunctional fluorine film according to the invention closes all micropores to a level of 4-5 nanometers, degasses them, protects the surface from aggressive substances and suppresses electrochemical corrosion without changing the conductivity and dielectric parameters, which allows to expand the scope of the proposed method.

After treating the surface with a composite composition and obtaining a multifunctional protective nanofilm, micropores and microcracks of the surface layer of the surface of the obtained coating reduce the level of the distributed stress concentration, i.e. cease to form centers of destruction and accumulation of surface energy. The proposed method provides smoothing surface energy according to the laws of uniform density to obtain a multifunctional protective coating - the creation of nanofilms with high wear resistance, antibacterial properties, anticorrosion, property to reduce the effects of radiation, intellectual memory.

Quality control of the coating should be done by measuring the wettability angle. Soft surfaces such as rubber or silicone after applying the composition can change their size (initially increase) ^, and then, after 80 to 96 hours, return to their original sizes with new ones - chemical resistance to aggressive media.

Improving manufacturability is due to the use of a one-step operation of applying a composite an additionally heated surface with a roughness level from υ, υυ ι μm to 2.5 μm with the subsequent formation of a nanofilm. After the composition gets on at least part of the surface of the solid, evaporation of the solvent occurs, and the fluorine-containing surfactant itself reacts with the surface. At the same time, fluorine-containing surfactant molecules create Langmuir structures (Langmuir stockade) in the form of spirals with molecular axes normally directed to the surfaces, which allow not only to reliably hold lubricating media, but also serve as a kind of buffer between contacting surfaces. In the process of adsorption, surface diffusion and as a result of evaporation of the solvent, a monomolecular layer (monolayer) is formed in the form of a film with a thickness of 3 to 10 nm, preferably from 1 to 8 nm, and the formation of the film is accompanied by a chemical reaction (chemisorption) in which. surface material and composition based on a fluorine-containing surfactant enters. When the film layer is formed, spatial orientation of the fluorine-containing surfactant molecules is ordered in a certain way, and the physicochemical properties of the surface being coated are radically changed. Particles of fluorine-containing surfactants do not separate from the surface due to chemisorption bonding. Thus, the proposed method provides the interaction of the composition with surfaces on a new physico-chemical basis, which allows you to apply the specified composition on metal, non-metal and polymer surfaces, including conductive and dielectric in hard-to-reach places, for example, in the internal parts of an electronic device, microchip, printed circuit board with installed blocks, thereby expanding the scope of its application.

The proposed method of surface modification, which has improved adaptability of coating, allows to obtain on the surface with a roughness level Ra from 0.001 μm to 2.5 μm multifunctional (anti-friction, anti-adhesive, etc.) protective nanofilms (thickness from 3 to 10 nm, preferably from 1 to 8 nm) a wide range of integrated surface protection, thereby improving the physicochemical properties of the surface: economic characteristics of the coating and expanding the scope.

The application of the composition can be carried out by immersion, spraying, lubrication, aerosol spraying, active or passive plugging. In this case, the deposition can be carried out both manually and in automated installations, the flow rate of the composition is determined by the application algorithm, schematically depicted in FIG. 3. This diagram shows the consumption rate of 1 kilogram of the composition with a density of 0.8-1, 8 g / cm ³ at † = 20 ° C, depending on the different methods of application (coating).

The technical and economic advantage of this invention is to increase the effectiveness of comprehensive surface protection while maintaining structural weight, optimizing physico-chemical and electrical properties — multifunctional surface protection against dry friction, moisture (hydrophobicity, water repulsion), radiation, bacteria and wear, while reducing costs the complexity of obtaining a protective nanofilm and the time to carry out the coating process.

Table 1 shows examples of methods for producing a protective film to illustrate certain aspects of the invention that are not intended to limit the scope of the present invention in any way.

Table 2 shows the characteristics of the film-coated surface of metal products, rubber products, optical glass, a printed circuit board with electronic elements, an aluminum-magnesium alloy.

Table 3 shows the results of measuring the insulation resistance (Ohm) coated with the Epilam Electronics composite composition, manufacturer, LLC AVTOSTANKOPROM according to TU 2412-002-13868195-2012.

Table 4 shows the technological features of the coating compositional composition and obtaining a multifunctional protective nanofilm of a fluorine-containing surfactant.

The modified surfaces obtained by the proposed method were tested in accordance with current standards and GOSTs according to indicators confirming the achievement of the specified technical result:

- determination of the quality of the applied composition according to TU 2412-001-13868195-2012, according to TU 2412-002-13868195-2012 and the quality of the applied coating according to TI 1831-010/3.

The following examples show the preparation of multifunctional protective nanofilms on a surface with a roughness level Ra from 0.001 μm to 2.5 μm in accordance with the method proposed in the claims, and the characteristics of the obtained modified surfaces, confirming the achievement of the specified technical result.

Example 1. A method of obtaining a protective film on the metal surface of a support pair consisting of thrust bearings and support needles with a roughness level Ra of 0.04 μm.

The surface was degreased with technical acetone according to GOST 2768-84, after which the surface was heated at a temperature of + 39 ° C for 8 minutes. Then, a composition was applied to the surface heated to the indicated temperature by dipping, namely Epilam SFK-05, a wt.% Solution of a fluorine-containing surfactant with a molecular weight of 2200

The solvent used was Solkane. The solution also contained a polyphosphate-based amine corrosion inhibitor. Consumption was 74 g / m ² . After that, the surface was subjected to heat setting at a temperature of + 97 ° C for 55 minutes. Thus, a film was obtained with a thickness of 7 nm, with an arithmetic mean surface roughness of 3.7 nm and with the mean square surface roughness of 3.4 nm, Table 1. The resulting film was subjected to tests for friction power, which are shown in Table 2.

Example 2. A method of obtaining a protective film on a non-metallic surface of an instrument circuit board with installed electronic elements with a surface roughness level of Ra 0.16 μm.

The method was carried out as in example 1, degreasing was carried out with technical isopropyl alcohol according to GOST 9805-84, after which the surface was heated at a temperature of + 28 ° C for 9 minutes. at the same time as the composition was applied "Epilam Electronics" wt. a solution of a fluorine-containing surfactant with a molecular weight of 3000 of the general formula as in Example 1. Isopropyl alcohol in combination with Foran freon was used as a solvent. The solution also contained an amine corrosion inhibitor additive. Consumption was 154 g / m ² . After that, the surface was subjected to heat setting at a temperature of + 68 ° С for 60 min. The composition was applied to the surface by spraying without insulation of conductive tracks of non-ferrous metals. The time and temperature parameters of the method, as well as the thickness and roughness of the obtained film are shown in Table 1. The resulting film was subjected to moisture resistance tests in a climate chamber at a humidity level of 95-98%, which are shown in Table 2.

Example 3. A method of obtaining a protective film on a rubber surface with a roughness level of Ra 0.70 μm.

The method was carried out as in example 1, while Epilam SFK-20, a wt.% Solution of a fluorine-containing surfactant with a molecular weight of 2200 general formula, was applied as a composition, as in example 1 _; The solvent used was the azo-safe Freon 41 Freon. The solution also contained an additive in the form of an amine polyphosphate-based corrosion inhibitor. Consumption was 132 g / m ² . After that, the surface was thermofixed at a temperature of + 85 ° С for 52 min. The composition was applied to the surface. by dipping. The time and temperature parameters of the method, as well as the thickness and roughness of the obtained film are shown in Table 1. The resulting film was subjected to chemical resistance tests that are shown in Table 2.

Example 4. A method of obtaining a protective film on the glass surface of an optical glass with a roughness level Ra of 0.012 μm.

The method was carried out as in example 1, but with additional drying (before heat setting). Drying was carried out at + 29 ° C for 5 min. Epilam Aqua was applied with a wt.% Solution of a fluorine-containing surfactant with a molecular weight of 2500 of the general formula Xi- [CF20] _n - [C2F4 0] _t - [CzRbO] | -X2 as a composition. Distilled industrial water was used as a solvent. The solution also contained a bactericidal additive. Consumption was 341 g / m ² . The composition was applied to the surface by lubrication. The time and temperature parameters of the method, as well as the thickness and roughness of the obtained film are shown in Table 1. The resulting film was tested for hydrophobic, release and bactericidal properties which are shown in Table 2.

Example 5. A method of obtaining a protective film on the metal surface of a guillotine knife with a roughness level Ra of 0.020 μm.

The method was carried out as in example 1, but with additional drying before heat setting. Drying was carried out at + 37 ° C for 5 min. As a composite composition, the composition 6СФ - 180-05 wt.% Solution of fluorine-containing surfactant with a molecular weight of 2500 of the general formula Xi- [CF ₂ 0] _n - [C ₂ F4 0] _m - [C3F ₆ 0] i-X2 was applied. Freon was used as a solvent. The solution also contained a corrosion inhibitor. Raskhr amounted to 1 18 g / m ² . The composition was applied to the surface by dipping and exposure to ultrasound. The time and temperature parameters of the method, as well as the thickness and roughness of the obtained film are shown in Table 1. The resulting film was subjected to tests for measuring the resistance to dry friction, which are shown in Table 2. Example 6. A method of obtaining a protective film on the surface of an aluminum-magnesium alloy with a roughness level a of 0.040 μm.

The method was carried out as in example 1, but with additional drying before heat setting. Drying was carried out at + 34 ° C for 5 min. Epilam ElectronicsA, a wt.% Solution of a fluorine-containing surfactant with a molecular weight of 2200 general formula was applied as a composition

Ooh

Isopropyl alcohol in combination with Foran freon was used as a solvent. The solution also contained an atmospheric corrosion inhibitor additive. Consumption was 142 g / m ² . The composition was applied to the surface by manual application by plugging. The time and temperature parameters of the method, as well as the thickness and roughness of the obtained film are shown in Table 1. The resulting film was subjected to tests for exposure to aggressive environments, which are shown in Table 2.

This method makes it possible to obtain a damper coating when designing artificially created production nanosystems with atomic accuracy, representing (((smart "coating - an informant coating capable of transmitting information about the state of the surface onto which the composition is applied or the surface mating with it.

The test results of measuring the insulation resistance of printed circuit boards with conductive paths, installed electronic blocks and sensors, coated with the composition according to example 3 (Epilam Electronics), the results of which are shown in Table 3. The results of measuring the insulation resistance clearly show that the studied values and the characteristics of printed circuit boards showed positive results - the invention allows to increase the life of the electronic unit. The parameters of electronic and “hole” conductivity remain stable, which is an essential and determining factor when choosing competing compositions for circuit board protection. The characteristics of the “nap” - Langmuir stockade - with a thickness of 3 to 10 nm, preferably 1 to 8 nm, with a chemisorbed monomolecular layer of vertically directed fluorine molecules make it possible to maintain electronic and “hole” conductivity by the programmed parameters even in the presence of donor (antimony, arsenic, phosphorus) and acceptor (indium, gallium, boron, etc.) impurities in the composition of materials.

In addition, the substances included in the composition are able to bind to the surface due to the chemisorption process when exposed to temperatures, thereby contributing to an additional increase in manufacturability while expanding the scope of the proposed method. Table 4 shows the necessary and sufficient parameters and values of the practical application of the proposed method and the production of a multifunctional protective nanofilm of a fluorine-containing surfactant. The values of Table 4 according to the proposed method allow specialists from a wide range of industries to use the proposed method for producing a multifunctional protective nanofilm.

The proposed method can be applied in various industries to solve the problem of comprehensive protection and impart appropriate properties to artificial intelligence elements, working and other surfaces of equipment and parts of general engineering, instrumentation, bioenergy and microelectronics, to enhance protection against wear, corrosion, moisture, in order to ensure bactericidal protection and reduction of radiation exposure, as well as for surface treatment of highly loaded friction units, tools for metal processing and cutting, for processing printed circuit boards, chips, sensors, etc. in order to give them wear resistance and durability when operating in ^'aggressive environments. Table 1

Pri- Level Heating- Drying by Thermofik- Thickness Roughness measures roughening, open film layer, film surface, n ° ° C in nm

over-the-ear

temperature, ° С ° С t, Srelnearif- Root-mean-Ra min metic

1 0.04 39 - 97 55 7 3.7 3.4

2 0.16 28 - - 68 60 5 2.4 2.1

3 0.7 39 - - 85 52 6 2.7 2.5

4 0.01 40 29 5 1 10 50 4 17 1, 6

5 0.02 39 37 5 100 60 8 1, 9 1, 9

6 0.04 40 34 5 90 75 5 2.3 2.2

table 2

When Testing Indicators without Indicators after Conclusions and Processing Measures Processing Recommendations

1 Application to the support Appearance In the operating mode The surface after the steam, consisting of adhesions, after after heating, before application and after the thrust bearings and supporting 1, 5-2 hours of operation 300 ° C and Risp 25 kgf / 1, 5-2 hours of needle operation, cm ² clean, no

sticking, scoring and rust marks, smooth rotation

2 Application on After Quality After application (for instrument printed thermal connections

circuit board with installed impact connectors PWL, WF, water repellent, electronic deteriorates SCM, VN protection against accidental elements. The quality of the connectors is preserved. moisture):

WF, SCM. Values Rcp values in after thermal cp in mOhm to mOhm after exposure application quality: 9.35 / application: 15.86 / for connectors not 2.37 / 4.87 / 8.16 3.45 / 5.31 / 9, 69 worsened

3 Application to Embrittlement, Chemical After applying the rubber part to surface resistance, the part was removed easily (cuff) fracture upon improvement of the mold, vulcanization and surface quality when removed from the press surface acquired the form of an electrically conductive polished

STEP. profile.

4 Application to glass Dust adherence Decrease After application, the optical surface and deterioration of adherence of dust to functional glasses are 2.8 times; normal performance, wave refraction Improvement obtained improved and spectral coefficient properties and a decrease in refractive properties; wettability.

increase

resistance to

transparent IR

radiation

5 Application to Blunting Knife Durability — After applying the metal cutting part, the surface of the knife (edges) is absent after blunting to 281 increased guillotine 164 operations of wear resistance of the cutting part of the guillotine knife

6 Application on aluminum 1. Violation Results After application and magnesium alloy AMC soldered seam; positive tests for

2. After soldering and after testing, cyclic

Chem. Oke. Samples during the change require 10 days in the chamber in violation and hydrophobization. humidity conditions coating changes

96-98% at temp. not found.

38-42 ° C Yuolitsa "s.

Ns electronic before testing; · In the chamber In the chamber After 48 hours of the block with the PP, point Ohm, heat; moisture after moisture; measurement norm according to TU 10 ⁴ norm according to TU norm according to TU 10 "

300

Counter. 2.0 10 ^s ; 2.0 105; 2.0 2.0 10 ³ ; 0.3 10 "; P O; 2.0 10 ³ ; 240; 2.0 10 ^s ; 1.7 10 ^s ; 0.6

eleven ; 2-2; 3-3; 4-4 10 ^s ; 2.0 10 ^s 2.6 10 ³ ; 2.5 10 410 10 ^s ; 0.7 10 ^s

1. With a film, 0.7 10 ^s ; 0.8 10 ^s ; 0.7 2.4 10 ³ ; 2.6 10 ³ ; 1, 2 10; 680; 0.7 10 ^s ; 0.6 10 ^s ; 0.7 applied 10 ^s ; 0.6 10 ^s 2.5 10 ³ ; 2.1 Yu 1, 9 10; 70 10 ^s ; 0.6 10 ^s offered

method 1 -1; 2-2; 3 to 3; 4-4

2. With a film of 1, 2 10 ^s ; 0.6 10 ^s ; 0.5 2.7 Yu ³ ; 2.8 10 ³ ; 2, 1 U ^3; 2.4 10 ³ ; 0.9 10 ^s ; 0.4 10 ^s ; 0.5 film, 10 ^s ; 0.4 10 ^s 2.6 10 ³ ; 2.9 Yu ³ 53; 55 10 ^s ; 0.4 10 ^s applied

proposed

way s; 2-2; 3 to 3; 4-4

3. With a film, 1, 0 10 ^s ; 0.7 10 ^s ; 0.5 2.8 10 ³ ; .2.6 Yu ³ ; 48; 440; 1, 0 10 ^s ; 0.4 10 ^s ; 0.5 applied 10 ^s ; 2.3 10 ^s 2.5 10 ³ ; 2.4 10 ³ 1, 8 10 ³ ; 840 10 ^s ; 2.3 10 ^s offered

method 1-1; 2-2; 3 to 3; 4-4

Table 4.

Name Dimension Time Time Tempe Time Temper Temper Time of the drying process to be processed, the temperature of the deposit. atura atura temro of the surface of the product, ripping in drying, after thermofixation mm i, to the limit and min. apply fixation, limit ah min. heating, ° С и, ° С min. ah, and when

min apply

nii, ° C

Metallic (in <3620 15-45 7-16 44 25-60 39 1 14 45 including alloys from

non-ferrous metals)

Non-metallic <4870 15-45 7-16 48 25-60 37 95 87 (glass, polymer,

rubber, plastic and

other)

Electrical <948 24-52 6-14 37 20-45 22 67 1 17 (electronic

printed blocks

boards

microchips, chips

and etc.)

Claims

FORMULA

1 . A method for producing a protective film on at least part of the surface of a solid body, including preliminary preparation of the surface, application of a composition composition based on a fluorine-containing surfactant and thermal fixation of the substance, characterized in that the composition composition is applied to the surface of the solid body, additionally heated after preparation, with roughness level Ra from 0.001 µm to 2.5 µm.

2. The method for producing a protective film according to claim 1, characterized in that the surface is heated in the temperature range from 28°C to 48°C.

3. The method for producing a protective film according to claim 1, characterized in that the composition is applied to obtain a protective film with a thickness of 3-10 nm, preferably 1-8 nm.

4. The method for producing a protective film according to claim 1, characterized in that the composition is applied to obtain a protective film with an arithmetic mean surface roughness from 2.4 nm to 3.7 nm, preferably from 1.6 nm to 2.3 nm.

5. The method for producing a protective film according to claim 1, characterized in that the composition is applied to the surface by immersion, spraying, lubrication, aerosol spraying, active or passive tamponing.

6. The method for producing a protective film according to claim 5, characterized in that spraying is carried out manually or in automated installations.

7. The method for producing a protective film according to claim 1, characterized in that a solution of a fluorine-containing surfactant is used as a composition, additionally including at least one modifying additive. ^'

8. The method for producing a protective film according to claim 7, characterized in that a polymer of the perfluoropolyether group with a molecular weight of more than 2000, having a general structural formula, is used as a fluorine-containing surfactant

OH

where n is the total number of a given element, in the range 1-13 inclusive; or

Xi-[CF ₂ 0]n-[C2F40] _m -[C ₃ F ₆ 0]!-X ₂

where n+m+l=5+50, and each of Xi and X ₂ is independently selected from the group: CF3, -C2F5 or -C3F7.

9. The method for producing a protective film according to claim 7, characterized in that a solution containing a fluorine-containing surfactant in an amount from 0.2 wt.% to 18.5 wt. is used. .

Y. Method for producing a protective film according to claim 7, characterized in that freon, alcohol, HLSZAIS, water or any possible combination thereof are used as a solvent.

1 1. The method for producing a protective film according to claim 7, characterized in that a corrosion inhibitor, antifriction additive, bactericidal additive or any possible combination thereof is used as a modifying additive.

12. The method for producing a protective film according to claim 1, characterized in that heat fixation is carried out in the temperature range from 67 ° C to 1 1 C ° for from 45 minutes to 1 17 minutes.

13. The method for producing a protective film according to claim 1, characterized in that after applying the composition, drying is additionally carried out in the open air in the temperature range from 22°C to 39°C for 3 to 5 minutes.