Composition for conductive antifouling coatings
(57) Abstract:Use: for the protection of the underwater part of the hull and hydraulic structures. Effect: reduce the drying time, improved physical and mechanical properties of the coating, the possibility of resuming its repair, as well as reducing the current density. The inventive composition contains (in wt. PM): waterproof 100 foaming agent, electrically conductive filler 100-180, organic solvent 100-740, the product of the polycondensation of a polyhydric alcohol, esterified with monobasic aliphatic acid, dibasic acid and oxide of divalent metal 3-12. table 1. The invention relates to compositions not containing biocidal components for receiving electrically conductive coatings for protection against marine fouling underwater part of the hull and hydraulic structures.Known composition to obtain a conductive coating containing a film-forming solution in organic solvent of a copolymer of ethylene with vinyl acetate, alkyd, acrylic, phenol, microcellulose and other resins; as a conductive apolakia composition to obtain a conductive coating, containing the foaming agent solution in an organic solvent acrylic, epoxy, vinyl, or polyester resins; as an electrically conductive filler is a mixture of flake graphite flake palladium.In the domestic industry known composition AK-562, containing a film-forming acrylic resin and conductive filler is a mixture of carbonyl Nickel graphite.Such a composition is used to obtain an antistatic coatings, and also for the manufacture of a heating layer of the heating elements.Closest to the claimed composition is a composition for obtaining conductive antifouling coatings and removal of fouling from covered surfaces, comprising ( wt. PM):
Water-resistant film former (on a dry basis) 100
Conductive filler 50
Organic solvent 475
As a water-resistant film-forming composition contains a film-forming silicate-based, of polyisobutylene, polyvinyl chloride, epoxy resin, vinyl resin, polyurethane, as a conductive filler flakes of stainless steel, chromium alloy; ka is the cover from the power source is continuously supplied cathode voltage at the current density of 0.001-0.1 a/DM2. To remove the fouling from overgrown surface voltage at the same current density is applied impermanent with a periodicity of submission of 0.5-2 min within 1 hThe coating on the basis of the prototype has a long drying time and low physical and mechanical properties. At this current density, protecting it from fouling, is 0.01-0.001 a/DM2.In addition, avoid intense corrosion upon contact of the coating with the protected metal surface on the metal pre-applied metallic coating on the basis of Zn and Cd, resulting in coverage in terms of the dock cannot be resumed in the repair.The technical result, which is provided by the invention, reducing the drying time, the improvement of physico-mechanical properties of the coating, resuming it in repair, and to reduce the current density, protecting it from fouling up is 0.0002-0,0008 A/DM2.The achievement of the technical result is ensured by the fact that the composition for conductive antifouling coatings containing water-resistant film former, electromega alcohol, esterified with monobasic aliphatic acid, dibasic acid and oxide of divalent metal having srednekamennogo molecular weight of 2-10 thousand carbon particles and the melting temperature 145-160oC, in the following ratio of components ( wt. PM):
Water-resistant film former (on a dry basis) 100
Conductive filler 100-180
Organic solvent 100-740
The product of the polycondensation of a polyhydric alcohol, esterified aliphatic acid, dibasic acid and oxide of divalent metal having srednekamennogo molecular weight of 2-10 thousand carbon units and a melting point 145-160oC 3-12
The product of the polycondensation of a polyhydric alcohol, esterified aliphatic acid, dibasic acid and oxide of divalent metal has the General formula:
< / BR>P polyhydric alcohol,
K dibasic acid,
R aliphatic limit or unsaturated acid,
Me divalent metal,
n the degree of polycondensation.For polymers with different molecular masses (with varying degrees of polycondensation n) components are used in the following sootnoshenija, glutaric, succinic and other polyhydric alcohols: glycerol, pentaerythritol, trimethylolpropane, triethanolamine and other aliphatic acids such as stearic, oleic, linolenic, linoleic acid, fatty acids of tall oil and other divalent metals: Fe, Co, Ni, Mg, Ca.The synthesis of the polymer is carried out in a reactor with stirrer, reflux condenser and heating. The first stage was charged to the reactor polyhydric alcohol, a solvent (xylene) in the amount of 10% by weight of a polyhydric alcohol, and the contents of the reactor are heated to 80oC, then add aliphatic monobasic acid. Increase the temperature in the reactor to 160-180oC and produce a distillation of the reaction water in the form of an azeotrope with xylene. After the termination of allocation of water was charged to the reactor dibasic acid. The temperature in the reactor support equal 160-180oC for 1 h Then the reaction mass is then cooled to 100-110oC add xylene in the amount of 30% by weight of a polyhydric alcohol and a metal oxide.The temperature in the reactor increased to 140-155oC, kept at this temperature for 3.5-4 h and distilled off the reaction water in the form of an azeotrope with xylene. The resulting product is cooled to 20-25oC and poured into a container in the form of KS is compared xylene solution of the polymer and the precipitator is 1:1.5 (by volume).The polymer has the following characteristics:
The average molecular weight for n 1-10 2-10 thousand.E.Appearance Powder or solid mass (depending on the volume of the precipitator)
Color depending on the used metal is Fe, Ni green Co pink Mg, Ca colorless
Melting point 145-160oC (above 160oC the polymer decomposes)
Solubility soluble in aliphatic and aromatic hydrocarbons, ketones, simple and complex esters, higher alcohols (Midrange and more); insoluble in water, lower alcohols (C1C3).As a water-resistant film-forming composition contains epoxy resin ED-20 (TU 10587-84), e-CA (TU 301-10-0-290-89), perchlorovinyl resin PSC-PP or PSC-LS (OST 6-01-37-88), a copolymer of trichloroethylene with simple vinyl ether and monoethylene ether of ethylene glycol (TU 301-05-195-93), a copolymer of vinyl chloride with vinyl acetate AND 15 (TU 113-00-5761647-20-91), partially saponified copolymer of vinyl chloride with vinyl acetate AND-15-OH (TU 6-01-1181-79).As electrically conducting filler composition contains a carbon filler: carbon black P-161, P-E (GOST 7885-86); graphite grades EG-15 and AG-20 (GOST 10274-79); silver graphite (GOST 102-73-79); ismelin mnim electrical resistance (4+1)10-4Mme, the fiber length of 5-30 mm, etc. metal powder: copper powder PMS-1, PMS-2, PMS-H (GOST 4960-75); zinc powder PDB-10 (TU 48-4015-40-87); aluminum powder PAP-1, PAP-2, (GOST 5494-71), etc.For dissolving the binders are applied xylene (GOST 9949-76), toluene (GOST 14710-78), acetone (GOST 2768-84), butyl acetate (GOST 8981-78), ethyl cellosolve (GOST 8313-88) and other examples of compositions illustrating the alleged invention:
Example 1.The copolymer trichloroethylene with simple vinyl ether and monoethylene ether of ethylene glycol 100,0
< / BR>The product of the polycondensation of a polyhydric alcohol, esterified aliphatic acid, dibasic acid and oxide of the divalent metal to 12.0
Example 2.< / BR>The product of the polycondensation of a polyhydric alcohol, esterified aliphatic acid, dibasic acid and oxide of divalent metal 3,0
< / BR>Example 3.Copolymer a-15-0 100,0
Carbon black P-161 80
The product of the polycondensation of a polyhydric alcohol, esterified aliphatic acid, dibasic acid and oxide of divalent metal 9,0
< / BR>< / BR>The production of a composition produced in a ball mill. First download the solvent-and water-resistant film former and produce the dissolution of the foaming agent included in a ball mill (3-4 hours). Then loaded the product of polycondensation of a polyhydric alcohol, esterified aliphatic acid, dibasic acid and oxide of the divalent metal and an electrically conductive filler, ball mill is driven to achieve the degree of milling of 70-80 microns (18-24 h
The table presents the results of the tests proposed composition and coatings based on it in comparison with the prototype.Antifouling properties of coatings based on the developed compositions were determined on the sea stand in the Black sea. Steel plate size of 100x100 mm thickness 1,5-2 mm) was reacted according to the scheme:
Primer VL-02 1 layer
Anticorrosive enamel XC-436 4 layer
The composition according to examples 1-4 2 layers.Painted plate (3 parallel sample for each scheme) was immersed in the sea, and from the current source was applied anode voltage at different current densities is 0.0002-0,0008 A/DMAs follows from the data presented in the table, the floor on the basis of the proposed composition has in comparison with the prototype reduced drying time, high physical and mechanical properties, and to provide protection from fouling it requires a much smaller current density, which dramatically reduces energy consumption.In addition, the coating on the basis of the claimed composition is easily renewed when the repairs in dock, because it is applied on the anti-corrosive layer, usually used for painting ships and hydraulic structures. Composition for conductive antifouling coatings including water-resistant film-forming, electrically conductive filler and an organic solvent, characterized in that it further comprises the polycondensation product polyhydric alcohol esterified with monobasic aliphatic acid, dibasic acid and oxide of divalent metal with srednekamennogo mol.m. 2000 10000 carbon units and a melting point of 145 160oWith the following ratio of components, wt. hWater-resistant film former (calculated on the dry matter) 100
Electroproportional acid, with dibasic acid and oxide of divalent metal with srednekamennogo mol.m. 2000 10000 carbon units and a melting point of 145 160o3 12
The organic solvent is 100 K
FIELD: organic chemistry, polymers.
SUBSTANCE: invention relates to a method for inhibition of overgrowing substrate in medium overgrowing with marine organisms. Method involves a coating on substrate before keeping in the indicated medium involving fluorinated resin that is able to hardening of the general formula: W-L-YFC-O-Rf-CFY-L-W wherein W represents group of the formula: -Si(R1)α(OR2)3-α wherein α = 0, 1 or 2 but preferably α = 0; R1 and R2 represent independently linear or branched (C1-C6)-alkyl groups comprising optionally one or some simple ether groups, or (C7-C12)-aryl or alkyl group but preferably R1 and R2 represent (C1-C4)-alkyl groups; L represents an organic binding group; Y represents fluorine atom (F) or CF3; Rf represents group of average molecular mass in the range from 250 to 8000 Da but preferably in the range from 500 to 3000 Da comprising repeating fragments comprising at least one of the following structures distributed disorderedly along the chain: -CFXO, -CF2CF20-, -CF2CF2CF2O-, -CF2CF2CF2CF2O-, -CR4R5CF2CF2O-, -(CF(CF3)CF2O)-, -CF2CF(CF3)O- wherein X represents F or CF3; R4 and R5 represent independently hydrogen atom (H), chlorine atom (Cl) or (C1-C4)-perfluoroalkyl. Invention provides preparing a coating with sufficient mechanical strength and the composition with good indices against overgrowing.
EFFECT: improved and valuable properties of composition.
9 cl, 10 ex
FIELD: varnish-and-paint industry.
SUBSTANCE: paint for nonfouling coatings is used as finish paint on hull surface to suppress deposition and growth of sea organisms. Paint contains binding agent including colophony material and additional film-forming resin at their weight ratio between 20:80 and 95:5, paint further containing ingredient possessing biocide properties against sea organisms. Additional film-forming resin includes (A) 30 to 90 wt % of film-forming polymer with acid functional groups, which are blocked with groups capable of being hydrolyzed, dissociated, or exchanged with sea water compounds thereby allowing polymer to be dissolved in sea water. Blocking groups are selected from quaternary ammonium groups forming with polymer quaternary ammonium salts and quaternary phosphonium groups forming with polymer quaternary phosphonium salts; and (B) 70 to 10 wt % of non-hydrolysable and water-indissoluble film-forming polymer.
EFFECT: achieved optimal strength of paint film and/or reliable washing-out of colophony-based paint matrix after washing-out of biocide.
8 cl, 2 ex
FIELD: chemistry of polymers.
SUBSTANCE: invention relates to using polyurethane reactive bicomponent solvent-free composites used for preparing thermostable at temperature below 90°C and compatible with cathode protecting covers. The composite comprises the following components: (A) solvent-free polyhydroxy-component consisting of (A1) 40-100 weight % of simple polyetherpolyol with functionality index ≥ 3.5 and molecular mass 280-1000 Da, or a mixture of some such components, and also (A2) 0-60 weight % of simple polyetherpolyacrylate with from 5.0 to 15 weight % of hydroxyl groups and viscosity index from 300 to 5000 mPa x s at 23°C, and also (A3) 0-60 weight % of other hydroxyl-containing groups of compounds of molecular mass from 32 to 1000 Da and wherein the weight % sum (A1)-(A3) is 100% always, and (B) polyisocyanate component consisting of at least one organic polyisocyanate wherein the equivalent ratio NCO : OH is in the range from 0.8:1 to 1.5:1. Invention provides preparing covers with high permissible prolonged temperature loading below 90°C for protection against corrosion in simultaneous compatibility with cathode protection.
EFFECT: improved and valuable properties of systems.
74 cl, 1 tbl
FIELD: organic chemistry.
SUBSTANCE: invention relates to composition for non-overgrowing covers and to a method for inhibition of backing overgrowing in an aqueous medium. The composition comprises the hardened or cross-linked organosiloxane-containing polymer free of perfluoropolyester groups and liquid polymer or oligomer containing fluorinated alkyl- or alkoxy-groups. Method involves applying the composition on backing used for non-overgrowing covers. Invention provides preparing compositions showing low surface energy and admissible elastomeric properties that diminish overgrowing with organisms and strength of their coupling with the surface.
EFFECT: improved and valuable properties of composition.
10 cl, 9 ex
FIELD: protection of underwater hulls of ships, objects and structures operated in water medium.
SUBSTANCE: compound for proposed coat contains polymer base and semi-finished product for production of β-active radio nuclides in form of finely dispersed powder, for example lithium bicarbonate L2CO3, thus ensuring radiation safety in manufacture and application of coat. After application of coat before beginning of operation, coat is subjected to activation by neutron flux (radiation source, type ИНК-1...109 with radio nuclide 252Cf) till density of radiation on coat surface reaches 102-103 R/h.
EFFECT: enhanced efficiency and reliability.
FIELD: mechanical engineering.
SUBSTANCE: invention relates to compositions intended for protection of underwater surfaces of watercraft and waterworks against fouling and can be used in shipbuilding to protect different surfaces operating in sea and river water from fouling and it can be used to protect underwater surfaces of waterworks, sea pipelines and other objects operating in water medium. Invention contains description of composition to protect underwater surfaces of watercraft and waterworks from fouling containing high-molecular fluorine containing compound and solvent. Composition contains, as high-molecular fluorine compound, quaternary ammonium salt of amide of perfluoropolyoxyalkylenecraboxylic acid and/or quaternary ammonium salt of amide of perfluoropolyoxyalkylenesulfonic acid in amount of 1-2 mass %, of the following composition: and isopropyl alcohol is used as solvent. Amount of quaternary ammonium, salt of amide of perfluoropolyoxyalkylenecraboxylic acid in mixture with quaternary ammonium salt of amide of perfluoropolyoxyalkylenesulfonic acid is 1-99 mass %.
EFFECT: reduced cost of protection of underwater surfaces of from fouling, reduced toxicological action of protected surface on surrounding water medium.
2 cl, 2 tbl
SUBSTANCE: new cyclic carboxylic acid is obtained in reaction which includes performing connection [J] of, at least one terpen-based diene connection (conjugate diene connection), chosen from group consisting of alloocymen, ocymen, mircen, α-terpinen and α-phellandren, and [K], at least one unsaturated carboxylic acid, chosen from α,β-unsaturated carboxylic acids and monoethers of α, β-unsaturated dicarboxylic acids. Connecting agent (A) for antifouling paint is also revealed. It containes one or more substances chosen from new cyclic carboxylic acid, derivative from cyclic carboxylic acid (excluding metal salt), metal salts of cyclic carboxylic acid and metal salts of the derivative of cyclic carboxylic acid, as well as composition of antifouling paint, which contains connecting agent (A) and copolymer (B) for antifouling paint of self-cleaning type, which is a polymerising copolymer based on basic metal salt of unsaturated carboxylic acid or polymerising unsaturated copolymer based on silyl ether of unsaturated carboxylic acid. From composition of antifouling paint covering film can be formed, which has only slight influence on environment, it is evenly subjected to erosion with definite rate, is able to retain excellent properties against fouling for a long period of time and can be applied to the surfaces of ships and other objects, which are used in marine territories with high risk of fouling.
EFFECT: obtaining film of antifouling paint, which has only slight influence on environment, is evenly subjected to erosion with definite rate, is able to retain excellent properties against fouling for a long period of time.
26 cl, 12 dwg, 4 tbl
SUBSTANCE: invention relates to compositions for non-fouling coatings and polymers to be used in such compositions. Claimed is polymer, which contains quaternary ammonium and/or quaternary phosphonic groups bound with main polymer chain and neutralised with counterions composed of anionic acid residue, which has aliphatic, aromatic or alkaril hydrocarbon group containing six or more atoms of carbon. Claimed is method for obtaining the polymer, application thereof in compositions for non-fouling coating, which contains the claimed polymer.
EFFECT: elaboration of polymer binder containing blocked functional groups, capable of being hydrolysed, dissociating or being subjected to exchange under action, and with participation, of substances present in sea water, and being at the same time low-toxic, polymer matrix remaining soluble or dispersible in sea water.
15 cl, 5 ex
SUBSTANCE: anticorrosive coating compound with high content of non-volatile components containing a major component (A) containing epoxy resin (a1) and polymerised monomer (a3) (meth)acrylate, and curing component (B) containing alicyclic amine hardener (b1) and/or Mannich base-type hardener (b2); component (A) and/or component (B) contains at least either an additive (a2) chosen from epoxidated reactive diluents and modified epoxy resins, and a modifier (ab) of coating film chosen from petroleum polymer resins, xylene resins, coumarone resins, terpene-phenolic resins and vinyl chloride copolymers. Anticorrosive coating compound with high content of non-volatile components, particularly quick-set compound is characterised by content of organic solvents with boiling temperature 150°C and higher. Essentially it does not contain organic solvents with boiling temperature 150°C or lower.
EFFECT: compound is used to coat all time of the year regardless of temperatures due to quick drying and sufficient viability and has good low-temperature curability.
59 cl, 9 tbl
SUBSTANCE: antifouling coating composition contains rosin as binder and a polymer, which contains a salt group, obtained using a method which involves stages for reacting acid, containing an aliphatic, aromatic or alkylaryl hydrocarbon group, containing at least 5 with a monomer, which contains amino- or phosphine groups in which: Y is O or NH, Z is N or P, R1 is a hydrogen atom or C1-C4 alkyl group, R2 is a divalent hydrocarbon group C2-C12, R3 and R4 are independently a hydrogen atom or C1-C6 alkyl group or an optionally substituted phenyl group, obtaining a monomer which contains an amino group salt and/or phosphine group salt, where the said salt contains anionic acid residue as a counterion, with an aliphatic, aromatic or alkylaryl hydrocarbon group, which contains at least 5 carbon atoms, and polymerisation of at least one type of the said monomer, containing salt.
EFFECT: antifouling coating composition is used for protecting underwater manmade structures, such as ship hulls, buoys, drilling platforms, oil rigs and pipes.
8 cl, 8 ex
FIELD: spatial material science and optical engineering.
SUBSTANCE: invention is designed for use in system of passive thermoregulation of spatial apparatuses for manufacturing cold-drying coatings of class "sun reflectors", which are applied onto outer surfaces of spatial apparatuses. Composition according to invention comprises: 9.49-9.54 wt parts amide-containing acrylic resin as binder; 52.36-52.49 wt parts monocrystalline superfine white-colored powder of zinc-gallium oxide with calculated formula ZnGaO1+n, wherein n=0.0064, and molecular mass 81.38; and 37.99038.15 wt parts solvent: xylene/butanol mixture at ratio 4:1; provided that binder-to-filler ratio is 1:5.5 and fraction of nonvolatile substances is 58.0% maximum.
EFFECT: preserved high optical characteristics of coating during prolonged operation of spatial apparatus.
3 cl, 1 dwg, 3 tbl
FIELD: temperature control coats applied on external surface of spacecraft for maintenance of definite thermal conditions.
SUBSTANCE: proposed temperature control coat is made from composition including amide-containing acryl resin in the amount of 1.0-1.1 parts by mass which is used as binder; mixture of xylol and butyl alcohol used as solvent; black heat-resistant pigment in the amount of 1.86-1.9 parts by mass which is used as filler, carbonylic nickel in the amount of 0.30-0.40 parts by mass at content of nickel of 99.5-99.9% and soot - commercial carbon in the amount of 0.03-0.04 parts by mass. Proposed coat has specific volumetric electric resistance not exceeding ρv≤7·103 ohms·m.
EFFECT: enhanced efficiency; low level of gas evolution.
FIELD: cathodic protection of metalwork.
SUBSTANCE: proposed paint-and-varnish material for corrosion protection of metalwork includes electrically conducting film-forming agent (electrically conducting polyethylene) and carbon nanotubes, from 10 to 80% of volume of paint-and-varnish material which increase electric conductivity and resistance to aggressive media and consequently mechanical strength of metalwork. Proposed paint-and-varnish material may additionally contain high-dispersed zinc powder ensuring additional cathodic protection from 40 to 90% of volume of paint-and-varnish material.
EFFECT: enhanced efficiency of corrosion protection of metalwork during protracted period of operation due to smooth electrical potential equal to potential of metalwork being protected.
5 cl, 1 tbl
FIELD: protective materials.
SUBSTANCE: invention relates to paint and varnish materials applied on surface for anti-corrosive protection of metallic construction and exhibiting large exploitation period. Paint and varnish materials comprise conducting polyethylene as a film-forming substance. Invention provides enhancing effectiveness of anti-corrosive protection of metallic constructions for prolonged exploitation period and enhancing working life of anti-corrosion cover for metallic constructions based on creature the uniform electric potential on a cover surface equal to the potential value of metallic construction to be protected and realization the additional protection effect.
EFFECT: improved and valuable properties of material.
SUBSTANCE: floor coating consists of anantistatic bottom layer and top layer, which consists of polyurethane (PU) dispersion, PU-solution, 2-component PU, PU-acrylate, epoxy acrylate, polyether or polyester acrylate, silicon-acrylate or mixture thereof, and contains mainly spherical particles with current-conducting coating, in amount of 0.01 to 10% (wt.) as regards to top layer weight. Average particle size is 0.1 to 50 mcm. Particles are coated with silver, aluminium, copper, nickel, gold or alloys thereof. Bottom layer is a current-conducting and antistatic polyvinylchloride (PVC)-, polyolefin- or rubber-based coating with vertical current-conducting channels.
EFFECT: highly transparent coating, easily cleaned and maintained.
10 cl, 1 ex
SUBSTANCE: invention relates to formed polymer products with electroconducting covering. Described is method of manufacturing polymer formed products, which lies in the following: on formed product by known method applied is lacquer system which includes binding agent, thickener, such as polymer thickener in amount from 0 to 20% wt or oligomer thickener in amount from 0 to 40% wt in terms of dry film (components a, b, c, d, e) and components - electroconducting powder-like metal oxide with average particle size from 5 to 50 nm and aggregation degree from 0.01 to 99%, and inert nanoparticles of silicon dioxide, each in amount from 5 to 500 wt fraction, in terms of component a), and, if necessary, solvent and other commonly used in lacquer systems additives, with further lacquer hardening.
EFFECT: obtaining covering with high electroconductivity with reduced amount of metal oxide.
6 cl, 4 ex