RU2406733C1 - Method of obtaining base for composite anticorrosion coating material and method of obtaining composite anticorrosion coating material using said base - Google Patents

Abstract

FIELD: chemistry.

SUBSTANCE: invention relates to chemical industry and specifically to obtaining composite anticorrosion coating materials meant for protecting rusty metal surfaces from corrosion, applied directly onto the rusty metal surface, and obtaining a base - sorption materials from products of processing natural organic compounds of plant origin. The method of obtaining a base for composite anticorrosion coating material involves using cut high density wood as raw material which undergoes hydrolysis with 0.5-0.8% sulphuric acid solution, washing and pressing the hydrolysate, its ammonolysis which is carried out with a mixture containing ammounium hydroxide, sodium citrate, sodium hydroxide, citric acid sodium, water, repeated washing and pressing the ammoniated product, separation into fractions, drying the product to 5-15% moisture content. The product is activated in the presence of ammonium hydroxide, amine additives, catalyst and water, followed by grinding and activation with a composition containing ammonium hydroxide, amine additives, catalysts and water at normal pressure and temperature of 100-150°C until achieving 5-15% moisture content of the product and particle size of 1-10 mcm. The method of obtaining composite anticorrosion coating material involves preparation of a mixture of binding substance and a base for composite anticorrosion coating material, mechanical activation and dispersion of the composition with filler pigments, treatment in the chamber of an apparatus with a vortex layer of ferromagnetic particles, colouring and dilution with diluents-solvents. The material is taken for bottling and packaging.

EFFECT: method enables to shorten the time for obtaining the material and power consumption, while obtaining high-quality anticorrosion coating complex material.

10 cl

Description

The invention relates to the field of chemical industry, namely to the production of composite anticorrosive paints and varnishes intended to protect rusty metal surfaces from corrosion applied directly to a rusty metal surface, and to obtain a base of adsorption materials based on products of processing natural organic compounds of plant origin.

A known method of producing a modified additive based on lignin for paints and varnishes by sequential treatment of magnetized and electroactivated water in an alkaline medium and grinding to a particle size of 5-12 microns (SU 1378338 A1, 10.27.1998) is an analogue.

A known method of producing a corrosion-resistant modified additive based on hydrolysis lignin for a paint and varnish material, in which the activated hydrolysis lignin is treated mechanochemically in the presence of ammonium hydroxide, amine additive and water to achieve a product moisture content of 15-17% and grinding to a particle size of 5-30 microns, and A method is known for producing a composite paint and varnish material by rust by mixing a binder (in particular, PF-115 enamel) and the above anti-corrosion modifying additive Ki (RU 2185410 C2, 07.20.2002) - a prototype.

The disadvantages of the known technical solutions are that they do not quickly and effectively convert rust.

The technical result from the use of the proposed technical solution can be expressed in increasing the anticorrosive properties and efficiency when using anticorrosive material.

The problem is solved in that in the method for producing a composite anticorrosive paint and varnish material for rust based on products of processing organic raw materials of plant origin according to the invention, various types of wood with a high density are taken for the raw materials used for processing; the material is prepared - cut into shavings or small bars, the possibility of using finished lumber or production waste is allowed. The prepared material is loaded into a chemical reactor lined from the inside with non-metallic acid-resistant materials, thermally insulated from the outside, equipped with irrigation and filtering devices, air ducts for barbation with heated air, pipelines for supplying chemical reagents, water and drainage of liquid-phase media to treatment facilities. The method in isothermal conditions at elevated pressure and temperature is as follows.

A method of obtaining the basis of a composite anti-corrosion paint material on rust involves the use of chopped wood with a high density index as a raw material, which is hydrolyzed with a 0.5-0.8% sulfuric acid solution, washing and squeezing the hydrolyzate, its ammonolysis with a solution based on the following ratio components, wt.%:

20-25% solution of ammonium hydroxide - 60.0-70.0;

0.5-2.0% sodium citrate solution - 10.0-14.0;

0.1-1.0% sodium hydroxide solution - 10.0-13.0;

1.0-5.0% sodium citrate solution - 10.0-13.0.

Otherwise, the ratio of the components of the solutions in terms of 100% substance, wt.%, Can be expressed as follows:

ammonium hydroxide - 12.0-17.5;

sodium citrate - 0.06-0.28;

sodium hydroxide - 0.01-0.13;

sodium citrate - 0.01-0.65;

water - the rest

repeated washing and spinning of the ammoniated product, fractionation, drying of the product to 5-15% moisture. The hydrolysis is preferably carried out at a hydromodule 1: (20-15), at a temperature of 200-250 ° C and a pressure of 10-12 kg · s / cm ² , for 4-6 hours. Ammonolysis is mainly carried out at a hydromodule 1: (2-6), at a temperature of 100-180 ° C and a pressure of 4-6 kg · s / cm ² , for 2-6 hours. Activation and the mechanochemical process are carried out by processing in a device with a vortex layer of ferromagnetic particles in a liquid medium, including electroactivated alkaline water and a solution of complexone 3 (disodium salt of ethylenediaminetetetraacetic acid). In this case, the product is fed portionwise into the working chamber of the apparatus with a vortex layer of ferromagnetic particles, intended for conducting liquid-phase chemical processes, having a non-metallic working surface and equipped with lined ferromagnetic particles, also paired with a classifier of processed raw materials by a pipeline. Processing in a device with a vortex layer of ferromagnetic particles is carried out sequentially classifying the material according to particle size to optimize the process.

The activation of the material is carried out in the presence of a mixture of a 20-25% solution of ammonium hydroxide, amine additives and a reaction catalyst, based on the following ratio of components, wt.%:

basis of anticorrosive material - 80.0-90.0;

20-25% solution of ammonium hydroxide - 5.0-15.0 (or in terms of 100% substance ammonium hydroxide - 1.0-3.75, the rest is water);

amine additives - 0-4.0;

the catalyst is 1.0-2.0.

The resulting composition is crushed and activated using 10 parts of dry material and 1 part of a mixture of solutions of the following composition, based on the ratio of components, wt.%:

20-25% solution of ammonium hydroxide - 40.0-60.0 (or in terms of 100% substance ammonium hydroxide - 10.0-12.0, the rest is water);

amine additives - 35.0-50.0;

catalysts - 5.0-10.0,

at normal pressure and temperature of 100-150 ° C until the finished product reaches a moisture content of 5-15% and a particle size of 1-10 microns.

As amine additives, a mixture of monoethanolamine, ethylenediamine and polyethylene polyamine is mainly used, based on the following ratio of components, wt.%:

monoethanolamine - 60.0-70.0;

polyethylene polyamine - 25.0-30.0;

ethylenediamine - 5.0-10.0.

As a catalyst, a 0.5-4.0% solution of complexone 3 (disodium salt of ethylenediaminetetraacetic acid) is mainly used. As catalysts, a 0.5-4.0% solution of complexone 3 (disodium salt of ethylenediaminetetraacetic acid) and trisubstituted ammonium phosphate in equal proportions are mainly used. Product grinding is carried out by processing in a device with a vortex layer of ferromagnetic particles in a liquid medium, including electroactivated alkaline water and a solution of complexone 3 (disodium salt of ethylenediaminetetraacetic acid).

The processed product is served for classification, extraction and drying; they dry the material to a moisture content of 5-15%, classifying by fractions for the efficiency of the process and the selection of large fractions of the material, for subsequent processing and obtaining sorption materials "Rusta". The dried material is fed into the working chamber of a ball mill lined with non-metallic materials, with non-metallic grinding bodies, equipped with a cooling jacket and a device for unloading dry powder compositions, as well as a pipeline for supplying material to the processing chamber with a vortex layer of ferromagnetic particles. Processing, preliminary grinding and activation of the material is carried out in the working chamber of a ball mill in the presence of a 20-25% solution of ammonium hydroxide, amine additives and a reaction catalyst. The treatment is carried out at normal temperature and pressure for 10-16 hours, after which the resulting material is unloaded and fed into the working chamber of the apparatus with a vortex layer of ferromagnetic particles intended for grinding and activation of dry bulk materials. Grinding and activation of the obtained material in the chamber of the apparatus with a vortex layer of ferromagnetic particles having a nonmetallic working surface and provided with lined ferromagnetic particles is carried out at normal temperature and pressure in the presence of reaction activators, for which, during the reaction, a mixture of ammonium hydroxide solution is portioned into the reaction material , amine additives and catalysts. The mixture of solutions is fed into each calculated portion of the material, which is processed in the working chamber of the apparatus with a vortex layer of ferromagnetic particles, based on the ratio (portion of dry material: mixture of solutions) - (10: 1); the processing is carried out at normal pressure and a temperature of 100-150 ° C for 5-30 minutes, controlling the dispersion of the particles of the material and its moisture, until the moisture content of the finished product is 5-15% and the particle size of the material is 1-10 microns.

Finished material "Rusta-M" is sealed in a moisture-proof container and portioned for subsequent operations.

A method of obtaining a composite anti-corrosion paint material on rust using a base includes the following.

A method of obtaining a composite anti-corrosion paint material on rust using a base obtained as described above, involves obtaining a mixture of a binder and a base of a composite anti-corrosion paint material on rust, based on the following ratio of components, wt.%:

a binder is 85.0-95.0;

base - 5.0-15.0,

after which they carry out mechanical activation and dispersion of the composition with filler pigments; process in the chamber of the apparatus with a vortex layer of ferromagnetic particles; tinted, diluted with solvent-diluents; served for bottling and packaging.

As a binder, various varnishes, resins, polymers, their compositions in a mixture with solvents and / or diluents are used. As pigment fillers use various pigments, fillers and special additives used in the paint industry to create anti-corrosion paint and varnish protective materials.

As a binder / film-forming according to the invention, semi-finished varnishes / resins are used for the paint and varnish industry, for example, an alkyd-styrene semi-finished composition, intended to obtain anti-corrosion primers for metal. As filler pigments according to the invention, for example, red lead, red ZhO pigment (redoxide), titanium dioxide pigment (nomenclature is attached) are used. As additives are used, for example, octane desiccant, aerosil (the nomenclature is attached). As solvents / diluents, solvents used in the paint industry for this type of binder, for example, an alkyd-styrene prefabricated composition, are used.

The ratio according to the invention of these components, varnishes, resins, polymers and their compositions in a mixture with solvents and / or diluents, pigment fillers and additives is used according to the invention, based on the following ratio of components, wt.%:

binding / film-forming - 45;

filler pigments, desiccants and other additives - 40;

active components of "Rusta" - 3-8;

solvents / diluents - 7-12.

As wood according to the invention, for example, coniferous wood is used.

In this case, mechanical activation and dispersion are mainly carried out in the ball mill chamber for 8-12 hours, and processing in the apparatus chamber with a vortex layer of ferromagnetic particles is carried out for 10-20 minutes.

Using specialized equipment, such as a high-speed anchor mixer, with a non-metallic coating of the reactor, a mixture of a binder (film former) of a paint and varnish material and Rusta-M material is prepared, with the following composition, in mass%: binder (film former) - 85-95; material "Rusta-M" - 5-15. As a binder (film former), various varnishes, resins, polymers and their compositions are used, mixed with solvents (diluents), depending on the formulation approved at the factory.

The finished mixture is fed into the working chamber of a ball mill lined with non-metallic materials, with non-metallic grinding bodies, equipped with a pipeline for supplying the finished material to the apparatus chamber with a vortex layer of ferromagnetic particles, the mixture is processed for 6-10 hours, then fed through the pipeline to the chamber apparatus with a vortex layer of ferromagnetic particles. In the working chamber of the apparatus with a vortex layer of ferromagnetic particles, the finished mixture is processed for 10-20 minutes, then the finished composition "Rusta-S" is served for subsequent operations. In a ball mill lined with non-metallic materials, with non-metallic grinding media, the composition “Rusta-S” is fed, then the estimated amount of fillers, pigments, special additives approved by the formulation for this type of composition “Rusta-S” is fed. The material is processed within 8-12 hours. The resulting material is fed to tinting, dilution with solvents (diluents), quality control, to bead mills, high-speed mixers, according to the formulations approved for each type of Rusta material.

Finished material “Rusta” is fed to the bottling and packaging line, to obtain marketable products - anti-corrosion composite paint and varnish material on rust “Rusta”.

Organic materials of plant origin are used as raw materials for obtaining the Rusta-M active component, for example, wood of various species with a high density index, prepared in advance - cut into shavings or small beams, the possibility of using ready-made lumber or production waste is allowed. These materials contain in their structure a diverse group of agents capable of complexation, namely polyphenolic - flavonoids, catechins, anthocyanins, tannins and other substances that can bind metal ions to chelate complexes.

In the process of acid hydrolysis of these raw materials, complete hydrolysis of polysaccharides (cellulose), pentazanes and most of the reducing substances occurs, the formation of soluble lignogumic and fulvic acids. When they are washed, pores are freed in the lignostructure matrix of the material. The material obtained as a result of acid hydrolysis has pronounced surface-active and sorption abilities, which allows it to be used as an effective anti-corrosion component - a component of paint coatings.

In the course of subsequent ammonolysis of the obtained material in the presence of sodium citrate, sodium hydroxide, sodium citrate, the matrix of the material structure is activated, additional carboxyl groups are added and amine groups are added, pores are liberated when leaching of humic and fulvic acids, dissolved ammonium salts and low molecular weight fragments of the material, which significantly increases its ion exchange capacity. The complex of selected reagents contributes to a more active passage of the reaction, binding impurities to soluble complexes, helping to free pores and increase the internal sorption surface of the material.

Subsequent processing of the obtained material in the chamber of the apparatus with a vortex layer of ferromagnetic particles, in a solution of electroactivated alkaline water, in the presence of complexon 3 (disodium salt of ethylenediaminotetraacetic acid), leads to the complete removal of soluble organic and inorganic fragments of the material matrix filling the pores and blocking functional groups; leads to the removal of cationic impurities of the matrix of the material, partially introducing the reagent used into the internal structures of the macromolecule of the substance, promoting the formation of coordination bonds with the central atom during ion exchange; under the influence of the electromagnetic field of the vortex layer of ferromagnetic particles, the rate of the chemical reaction, the activation of the particles of the substance due to the deformation of the crystal lattice of the macromolecules of the material and a sharp increase in chemical activity, the degree of dissociation of the material significantly increase.

The use of a device with a vortex layer of ferromagnetic particles in combination with a ball mill lined with non-metallic materials can significantly increase the productivity of the process, transfer it from cyclic to continuous, reduce energy consumption and reduce the time required for mechanochemical activation of the material.

The ratio of the reaction components, amine additives selected from the group of products containing amines, has been established by research and is due to the requirement to increase the nitrogen content in the active component of the Rusta-M material, to completely neutralize acid ion residues and to increase the surface-active abilities of the active component of the material "Rusta."

The above method of creating the composition “Rusta-S” “paint and binder (film former) - the active component is the basis of“ Rusta-M ”” is due to the reactivity of the material “Rusta-M”, which creates stable complex bonds with low molecular weight and / or high molecular weight resins, varnishes, substances that are binders in paints and varnishes. The presence of fillers, pigments and other components of the coating material at the stage of the activation and dispersion process of the Rusta-S composition is premature and impractical. In the process of obtaining the final product “Rusta” - anti-corrosion composite paint and varnish material for rust “Rusta” - one should especially take into account the high activity of the material and components of the material to create complex chemical bonds with metal surfaces and parts of machines and equipment. Therefore, all chemical reactors, devices, mixers and other equipment in contact with Rusta materials must be lined / coated with non-metallic coatings.

From the above data, the method of obtaining a comprehensive anti-corrosion paint and varnish material for rust and the sorption material "Rusta" it follows that the production method according to the invention has undeniable advantages over known methods, namely: obtaining a unique anti-corrosion paint composition "active sorption material-base" Rusta-M "- composite material" Rusta-S "- paint and varnish material" Rusta ""; maximum mechanization of the material manufacturing process; a significant reduction in the time required to obtain material and energy costs for carrying out the technological process, and as a result, to obtain high-quality anti-corrosion paint and varnish complex material for rust "Rusta", which surpasses well-known materials in its performance. Given the possibility of obtaining Rusta materials on the basis of cheap, large-capacity industrial waste, its production has great prospects.

Claims (10)

1. A method of obtaining the basis of a composite anti-corrosion paint material on rust, including the use of chopped wood with a high density index as a raw material, which is subjected to hydrolysis with a 0.5-0.8% solution of sulfuric acid, washing and squeezing the hydrolyzate, carry out its ammonolysis with a mixture solutions in terms of 100% substance components, wt.%:
ammonium hydroxide 12-17.5 sodium citrate 0.06-0.28 sodium hydroxide 0.01-0.13 citric acid sodium 0.01-0.65 water rest
repeated washing and spinning of the ammoniated product, fractionation, drying of the product to 5 -15% moisture;
activation of the material in the presence of a mixture of a 20-25% solution of ammonium hydroxide, amine additives and a reaction catalyst, based on the following ratio of components, wt.%:
base of anticorrosive material 80.0-90.0 ammonium hydroxide (in terms of 100% substance) 5.0-15.0 amine supplements 3.0-4.0 catalyst 1.0-2.0 water rest
followed by grinding and activation using 10 parts of dry material and 1 part of a mixture of solutions of the following composition based on the ratio of components, wt.%:
ammonium hydroxide (in terms of 100% substance) 10.0-12.0 amine supplements 35.0-50.0 catalysts 5.0-10.0 water rest
at normal pressure and temperature of 100-150 ° C until the finished product reaches a moisture content of 5-15% and a particle size of 1-10 microns. 2. The method according to claim 1, in which the hydrolysis is carried out at a hydromodule 1: (20-15) at a temperature of 200-250 ° C and a pressure of 10-12 kg · s / cm ² for 4-6 hours 3. The method according to claim 1, in which ammonolysis is carried out at a hydromodule 1: (2-6) at a temperature of 100-180 ° C and a pressure of 4-6 kg · s / cm ² for 2-6 hours 4. The method according to claim 1, in which the activation and mechanochemical processes are carried out by processing in the apparatus with a vortex layer of ferromagnetic particles in a liquid medium, including electroactivated alkaline water and a solution of complexone 3 (disodium salt of ethylenediaminetetraacetic acid). 5. The method according to claim 1, in which the mixture of monoethanolamine, ethylenediamine and polyethylene polyamine is used as amine additives, based on the following ratio of components, wt.%:
monoethanolamine 60.0-70.0 polyethylene polyamine 25.0-30.0 ethylenediamine 5.0-10.0 6. The method according to claim 1, in which a 0.5-4.0% solution of complexone 3 (disodium salt of ethylenediaminetetraacetic acid) is used as a catalyst. 7. The method according to claim 1, in which a 0.5-4.0% solution of complexone 3 (disodium salt of ethylenediaminetetraacetic acid) and trisubstituted ammonium phosphate in equal proportions are used as catalysts. 8. The method of obtaining a composite anti-corrosion paint material on rust using the base according to claim 1, comprising obtaining a mixture of a binder and the base of the composite anti-corrosion paint material on rust, based on the following ratio of components, wt.%:
binder 85.0-95.0 the basis 5.0-15.0
after which mechanical activation and dispersion of the composition with filler pigments is carried out, it is processed in the chamber of the apparatus with a vortex layer of ferromagnetic particles, tinted, diluted with diluent-solvents, served for bottling and packaging. 9. The method according to claim 8, in which as a binder use various varnishes, resins, polymers and their compositions in a mixture with solvents and / or diluents. 10. The method of claim 8, in which the mechanical activation and dispersion is carried out in the ball mill chamber for 8-12 hours and the processing in the chamber of the apparatus with a vortex layer of ferromagnetic particles is carried out for 10-20 minutes