Composition for a metal coating
FIELD: chemical industry; production of polymeric compositions on the epoxy basis.
SUBSTANCE: the invention is pertaining to the field of chemical industry, in particular, to production of polymeric compositions on the epoxy basis. The invention offers a composition for protection of internal surfaces of fuel tanks-caissons of aircrafts made out of aluminum alloys against corrosion at the long-term usage in a fuel medium and it also may be applied to protect interior and exterior surfaces of means of transport and structures made out of magnesia alloys and steel. The offered composition for application as a metal coating contains: in the capacity of a polymeric binding - epoxydianil resin or epoxyorganosilicon resin; in the capacity of a modifying agent - polysulfide or butadieneacryl nitrile carboxylated rubber; as a hardener - organosilicone amine - γ-aminopropyltriethoxy silane, 1-amino hexamethylene -6- hexamethylenetriethoxy silane or a condensation product of γ-aminopropyltriethoxy silane, a mineral filler - barium sulfate, aerosil, talcum, titanium dioxide or their mixes; in the capacity of abscopal pigments - strontium chromate, barium chromate, chromium phosphate or their mixes; organic solvent - xylene, acetone, butyl acetate, ethyl cellosolve or their mixes at the following components ratio(in mass shares): polymeric binding - 100, modifying agent - 9-50, a hardener - 5-80, a mineral filler - 25-105, inhibiting pigments - 30-140, organic solvent - 5-200. The offered composition allows to produce a fuel and a water-resistant coating with high adhesive and physical-mechanical characteristics, fungi-resistant, protective features ensuring at small thickness (a small weight of the coating) the long-term protection of the fuel tanks-caissons, which are operating in the liquid hostile environments at the temperature difference from-60°C up to (+100-150)°C.
EFFECT: the invention ensures production of a fuel and a water-resistant coating with the high adhesive and physical-mechanical characteristics, fungi-resistant, protective features.
4 cl, 12 ex, 3 tbl
The invention relates to the field of polymer compositions based on epoxy resin. The composition is recommended to protect the inner surface of the fuel tanks, caissons aircraft made of aluminum alloys from corrosion during long-term operation in the environment of fuel.
The composition can also be used to protect internal and external surfaces of the fuselage of the aircraft, passenger cars and other units in the system with epoxy, acrylic, polyurethane and other enamels. The composition can also be used to protect structures from magnesium alloys and steel.
One of the most complex issues facing modern science, is to provide reliable corrosion protection of the internal surface of the fuel integral tanks, aluminum alloy with anodic-oxide coating and steel fasteners. Integral tanks are filled with fuel during the entire life of the aircraft (up to 20-25 years). The coating is subjected to prolonged exposure to fuel, water (condensation) when operating temperatures from -60°With up to 100-150°C. Therefore, these coatings must be resistant to fuel, water, possess high adhesion and mechanical properties, high protective properties (for the entire life of the aircraft), funginertness (stable the awn to microorganisms) and not to deteriorate after exposure to operational factors.
Known polymer composition is a primer EP-076, including epoxy Dianova resin e-41, the curing agent is a polyamide resin IS 200, pigments and fillers (strontium chronologicly, titanium dioxide, talc) and solvents (TU 6-10-755-84).
A significant drawback of this primer is a low water and teplostoykost.
Known polymer composition comprising epoxy resin, karboksimyetilirovaniye nitrile rubber (at a molar ratio of Acrylonitrile and butadiene 5:95...45:45) and the curing agent (product of the interaction of aromatic or aliphatic diamine with tetracarbonyl anhydride)used in the dispersion system with liquid medium from the ketone (Japan patent No. 2848612).
The disadvantage of this composition is a low adhesion to anodized aluminum alloys and steel environment fuel.
Known polymer composition for corrosion-resistant coating comprising a solution of epoxy resin e-41 in xylene or acetone; as hardener - derived organosilicon amines ASOT-2; as a filler - fine-flaked α-iron oxide (specularite) and Tikal (RF patent No. 2174136).
However, this coating is not sufficiently high adhesion to aluminum alloys, and consequently, low fuel and water during long-term operation in harsh the environment.
The closest analogue of the invention adopted for the prototype is the composition of the primer for anti-corrosion coatings for products made of steel and aluminum alloys of the following composition by mass:
|Epoxy Dianova resin e-41||100|
|Modifier-acrylic resin BMC-5||10-20|
|- aluminum phosphate||30-40|
|- molybdate zinc||30-40|
|- talc or micro-talc||18-24|
|The hardener is a product based on silicon-|
|organic amines of AGM-9||30-50|
|xylene, acetone, ethyl cellosolve (RF patent No. 2088621)||350-530|
However, this primer does not have a sufficiently high fuel and water resistance during long-term operation in liquid environments at elevated temperatures, low funginertness and not combined with toplevelname sealants.
Technical problem p is izlagaemogo invention is to provide a coating composition for metal, high adhesion, mechanical and protective properties, high fuel and water resistance, resistance to microbial attack during long-term operation in liquid corrosive environments at temperatures from -60°With up to 100-150°C, compatibility with toplevelname sealants.
For the technical solution proposed composition for coating metal, comprising a polymeric binder, the modifier, the curing agent is a silicone amine, mineral filler, inhibiting pigments and an organic solvent, characterized in that it contains a polymeric binder epoxy Dianova or amoxicillinpurchase resin as a modifier - polysulfide or carboxylated nitrile rubber, and as inhibiting pigments - strontium chromate, barium chromate, phosphate, chromium or their mixtures in the following ratio, parts by weight:
As a hardener composition contains γ-aminopropyltriethoxysilane, 1 - aminohexanoate-6-aminomethylenemalonate or condensation products of γ-linepro-pilltriamterene.
As a mineral filler composition contains barium sulfate, Aerosil, talc, titanium dioxide or mixtures thereof.
As the organic solvent composition contains xylene, acetone, butyl acetate, ethyl cellosolve, or a mixture thereof.
As the polymeric binder in the present invention can be used Dianova epoxy resin with a molecular weight of from 450 to 1600 and mass fractions of epoxy groups from 6.0% to 23.5%, for example ED-20, e-41, e-44, GOST 10587-84, OST 6-10-416-77, THE 6-10-607-78, THE 6-10-1347-75 or amoxicillinpurchase resin (product modification epoxy Dianova resins organic silicon compounds) with a mass fraction of epoxy groups of 12-15% and a silicon content of 4-5%, for example of SEDM-1, CADM-2 OST 6-05-448-95.
As a mineral filler may be used titanium dioxide (rutile) according to GOST 9808-84, talc according to GOST 19284-79, barium sulfate (mikrobasic) according to GOST 3158-75, Aerosil according to GOST 14922-77 improving technological properties, or mixtures thereof.
Used as a modifier carboxylated nitrile rubber with a molecular weight of 20000 to 30000 for THE 6-00-05807983-160-95 or polysulfide rubber is having a viscosity of 150 to 300 CPS GOST 12812-72 due to the presence of a reactive carboxylate or sulfhydryl groups, under certain conditions, enter into chemical interaction with the polymer binder, by flexibilisierung coverage. In addition, the presence of functional groups modifier promotes the adhesion strength. Organosilicon amines -γ-aminopropyltriethoxysilane on THE 6-02-724-77, 1-aminohexanoate-6-aminomethylenemalonate on THE 6-02-586-86 or condensation products of γ-aminopropyltriethoxysilane on THE 6-02-1250-83 used as a hardener in the proposed structure, interact with a polymeric binder, and also have a catalytic effect on the process of interaction between epoxy groups of the polymeric binder with carboxylate or sulfhydryl groups of the modifier (primary amines). The specified curing agent performs the role of "amplifier" adhesion, since this ratio with the polymer binder and modifier is a chemical bond between the coating and substrate due to the interaction of taksigrup atom with hydrated silicon oxide surface of the metal.
Introduction to composition for coating leachate chromium (inhibiting pigments) significantly increases the protective properties of the proposed structure. When exposed to a corrosive environment chromates, having slight solubility in water, create artificial conditions the Oia for passivation of metal, shifting electrode potential in the positive direction, and inhibit electrochemical processes of metal corrosion. Using strontium chromates on THE 48-4-239-82 and barium on THE 6-09-5286-86, phosphate of chromium on THE 6-18-87-85 or mixtures thereof, can adjust the rate of leaching in the initial and final stage.
The composition has a long high resistance to jet fuels and water at temperatures from -60°With up to 100-150°maintaining high level of safety, physical and mechanical properties, water-teplostoykost at elevated temperatures. The composition has good compatibility with toplevelname sealants and high resistance to the action of microorganisms.
The embodiments of the invention are shown in table 1.
Technology of preparation of the composition (examples 1-12) consists of the following: a polymer binder dissolved in a mixture of solvents. To the resulting solution add modifiers, pigments and fillers and pounded to a milling degree of 25-35 microns ("wedge"). Before use, the composition is administered hardener, mix and bring to a viscosity 13-16 with the viscometer VZ-246.
The invention is not limited to the given examples.
Of the compounds shown in examples (1-12), were obtained coating thickness of 35-45 μm on the aluminum alloy and steel. Defined: adhesive so the awn at separation; fuel and water; funginertness; resistance to impact, elasticity tensile in the initial state, and after thermostate at a temperature of 200°With over 300 hours; protective properties on the aluminum alloy and steel; the compatibility of the coating with polysulfide sealants. Combinability coatings sealants were determined by the method of exfoliation with a grid.
The results are shown in tables 2 and 3.
As can be seen from the data of tables 2 and 3, the adhesion strength of the proposed composition of the aluminium alloy and steel in comparison with the prototype has increased on average by 80% as in the initial state and after thermostate, elasticity increased by 46%, the swelling properties of the fuel and water decreased by 2-3 times, adhesion polysulfide sealant to the proposed coverage has increased on average by 3.5 times.
|Name of the component||The compositions according to the examples, parts by weight||The placeholder|
|Epoxy resin e-41||-||100||100||100||100||100||-||-||-||-||100|
|Epoxy resin e-44||100||-||-||100||-||100||-||-||100||-||-||-||-|
|Epoxy resin ED-20||-||-||-||-||-||-||-||-||-||100||-||-||-|
|Amoxicillinpurchase resin SEDM-1||-||-||-||-||-||-||-||-||-||-||-||100|
|Amoxicillinpurchase resin CADM-2||-||-||-||-||-||-||-||-||-||-||100||-||-|
|Nitrile carboxylated rubber||9||33||50||-||-||-||15||30||20||40||50||-|
|Acrylic resin BMC-5||-||-||-||-||-||-||-||-||-||-||-||-||15|
|The barium chromate||20||44||70||-||26||-||-||-||-||20||65||70||-|
|The chromium phosphate||-||-||-||-||26||-||100||20||33||-||-||-||-|
|The aluminum phosphate||-||-||-||-||-||-||-||-||-||-||-||-||40|
|γAmin is propyltriethoxysilane||-||the 17.3||5||-||-||-||-||27||40||-||-||-||50|
|The product of condensation γ-aminopropyltriethoxysilane||-||-||-||50||68||55||-||-||-||80||78||65||-|
|The ethyl cellosolve||-||-||-||50||40||30||40||56||35||-||-||-||150|
Comparative properties of coatings
|Performance properties||The proposed structure examples||The placeholder|
|the alloy D16 anoxic||68,3||72,0||70,8||of 56.4||52,3||53.1||71,3||70,9||to 66.3||to 59.6||61,7||60,3||34,6|
|steel 30HGSA COP. in||61,1||64,6||63,3||48,3||48,3||to 49.3||60,2||56,6||52,9||57,1||52,4||58,8||32,2|
|the initial state|
|After thermostate at|
|t-d 200°s - 300 h|
|ZOGGS COP.||44,6||56,1||46.2||37,7||41,0||36,1||43,9||30,1||38,6||41,7||to 38.3||42,9||22,4|
|Impact strength, kg·cm|
|in the initial state,||50/50||50/50||50/50||50/50||50/50||50/50||50/50||50/50||50/50||50/50||50/50||5/50||50/0|
|after thermostate at|
|t-d 200°s-300 h||50/40||50/50||50/50||50/0||50/10||50/30||50/20||50/20||50/20||50/30||50/40||50/50||50/0|
|in the initial state,||the 5.7||6,0||6,2||4,8||5,0||5,1||5,1||5,6||5,9||6,0||6,1||6,6||a 3.9|
|after thermostate at|
|t-d 200°s-300 h||4,2||a 4.9||5,1||4,0||the 3.8||a 3.9||3,7||4,2||4,8||5,1||5,2||the 5.7||2,8|
|after 3000 h test||rash|
|Vadovaujamasi, %,||2,16||2,22||2,31||2,44||2,41||2,45||of 2.51||2,53||2,53||to 2.29||2,32||2,31||5,66|
|after 3000 h test||rash|
Comparative properties of coatings
|Performance properties||The proposed structure examples|
|polysulfide sealant, n/m - original||1866*||1734||2088||2156||1862||1724||1842||1773||1960||2088||1862||650|
|-after a test|
|fuel at t-re 70°for||1274||1176||1264||1568||1764||1666||1332||1176||981||1235||1254||1185||410|
|-after a test|
|water at t-re 70°for C||1029||1127||1078||1362||1430||1381||1078||1195||1156||1274||1303||1362||326|
resistance after a test
the salt fog chamber 12 months.
rash all over
|electrode potential E,|
|coating after 10 days in 5% NaCl solution|
|* Peeling of the sealant from the coating no. The destruction of sealant on the net|
The use of the composition according to the invention provides for a small the thickness (small gain coverage) long-term protection of the fuel integral tanks, operating in liquid corrosive environments at temperatures ranging from -60°With up to 100-150°C.
The composition provides reliable protection of the fuel tanks on the whole life is 20-25 years.
1. Composition for coating metal, comprising a polymeric binder, the modifier, the curing agent is a silicone amine, mineral filler, inhibiting pigments and an organic solvent, characterized in that it contains a polymeric binder epoxy Dianova or amoxicillinpurchase resin as a modifier - polysulfide or carboxylated nitrile rubber, and as inhibiting pigments - strontium chromate, barium chromate, phosphate, chromium or their mixtures in the following ratio of components, parts by weight:
2. Composition for coating on a metal according to claim 1, characterized in that as a hardener it contains γ-aminopropyltriethoxysilane, 1-amino shall hexamethylen-6-aminomethylenemalonate or condensation products of γ -aminopropyltriethoxysilane.
3. Composition for coating on a metal according to claim 1, characterized in that the mineral filler it contains barium sulfate, Aerosil, talc, titanium dioxide or mixtures thereof.
4. Composition for coating on a metal according to claim 1, characterized in that the organic solvent it contains xylene, acetone, butyl acetate, ethyl cellosolve, or a mixture thereof.
FIELD: coating composites.
SUBSTANCE: invention relates to the coating composite. The composite comprises the following components: alkyd resin hardened by oxidation - polyunsaturated product of condensation with by-side groups in the amount above 20% by the condensation product mass wherein by-side groups comprise unsaturated bond carbon-carbon, polythiol with two or more SH-group and siccative. Equivalent ratio of thiol-functional groups to unsaturated bonds carbon-carbon is less 0.3 but preferably between 0.01 and 0.25. Vanadium and manganese compounds are used as a siccative. The coating composition can comprise chelating agent accelerating the hardening process and a solvent. Invention provides preparing the stable composite rapidly hardened at low temperature and exhibiting the sufficient time for its storage. Invention and the composite can be used as clear lacquer, decorative coating, for example, for doors and window frames, in industry for wood substrates and for substrates made of metal, concrete, plastics and other materials.
EFFECT: valuable properties of composite.
6 tbl, 28 ex
FIELD: corrosion protection.
SUBSTANCE: invention is designed for oil production and can also be used in mechanical engineering, instrumentation engineering, and other branches. Composition contains 6-10% low-grade lignosulfonates, 2-5% industrial oil (spindle oil, tall oil, or MS-20 oil), 60-65% production waste, and 24-28% additive, namely primary C8-C11-amines. Production waste is, in particular, vat residues from production of synthetic fatty C10-C-acids or solid petroleum hydrocarbons: asphaltene-tar-paraffin deposits formed during production and transportation of petroleum. Use of composition increases degree of protection of metallic objects against corrosion under atmospheric precipitate conditions owing to retained high adhesion of coating formed from composition to metal, reduced porosity of coating, and prolonged period of time before appearance of the first center of corrosion attack at lower thickness of coating.
EFFECT: improved anticorrosion characteristics, simplified composition preparation technology, reduced coating formation time, and reduced expenses due to utilized waste.
2 cl, 2 tbl
FIELD: polymer materials.
SUBSTANCE: invention relates to preparation of vibration-absorbing composition that can be used in a variety of industrial fields, in particular to mount turbogenerators, marine engines, hoists, and other equipment. Composition contains, wt % 4,4'-isopropylidenediphenol epoxide resin 20.7-40.8, active diluent 5,8-10.2, mineral filler 41,8-62.4, and amine hardener 7.2-11.1, said mineral filler being wollastonite with at least 30% needle fraction wherein ratio of needle length (not larger than 63 μm) to needle thickness is 5:1.
EFFECT: improved mechanical characteristics and damping properties.
2 tbl, 13 ex
FIELD: composition materials.
SUBSTANCE: invention relates to a method for preparing the composition cover that can be used for recovery worn out article surfaces working under conditions of high compression loadings, bearing surface of lateral framework in loading truck car in zone of slipping aperture. Method involves mixing the polymerizing epoxy composition and metallic dispersed filling agent in the ratio = (1:6)-(1:9) mas. p. p. Mixing is carried out at effect in increasing pressure in auger mixer with alternate step being each the following auger step differs from previous step by the constant value. Then the prepared composition is applied on metallic surface and kept its at the polymerization temperature up to finishing the solidification process. Composition based on epoxy resin ED-16, ED-20 with latent hardening agent dicyandiamide is used as epoxy composition. Iron powder PZH-4, iron-base powder PS 27-M, iron-base PG-USCH-35, nickel-base powder PG-SP2-M are used as a metallic dispersed filling agent. Invention provides enhancing the specific compression loading value.
EFFECT: improved method for preparing, valuable properties of cover.
5 cl, 1 tbl, 1 dwg, 6 ex
FIELD: building materials.
SUBSTANCE: invention relates to a method for preparing compositions used for covers, among them to corrosion-water-fuel-resistant covers by nonferrous metals, concrete and ceramics in moisture and aggressive media. The composition comprises the following mass ratio of the parent components, %: film-forming mixture comprising oligomeric carboxyl-containing butadiene-nitrile rubber, 10.9-28.1 and epoxy-diane oligomer, 7.0-10.9 in the mass ratio of epoxy-diane oligomer and rubber from 19.9:80.1 to 50.0:50.0; hardening agent, 5.9-18.1; solvent, 41.0-51.1; filling agent, 1.4-1.6, and pigment, 13.6-16.4. Film-forming agent is heated preliminary at temperature 90-120°C to the conversion degree of carboxyl groups 8.8-25.2%. Mixture of γ- and β-aminopropyltriethoxysilanes is used as a hardening agent in the mass ratio = (67-75):(25-33), or 45-55% solutions of products of hydrolytic condensation of mixture of γ- and β-aminopropyltriethoxysilanes in cyclohexanone or toluene. Invention provides enhancing the strength of cover in direct/reverse impact, adhesion in moisture media, resistance to defoliation in storage and bending, to reduce swelling capacity in water.
EFFECT: improved, enhanced and valuable properties of composition.
2 tbl, 4 ex
FIELD: organic chemistry, in particular composition for corrosive and chemically stable coats.
SUBSTANCE: invention relates to alkyd-epoxy undercoat compositions based on debris from phthalic anhydride and epoxy resin distillation. Claimed composition contains (mass %) epoxydianic resin 45.0-45.4; modified alkyd resin obtained by stepwise esterification of sun flower oil, polyhydric alcohol and slop from phthalic anhydride distillation with grain-size classification of 0.05-1.1 mm and phthalic anhydride content of 37-80 % - 36.0-36.3; filler 4.9-5.5; pigment 3.5-3.8; balance: solvent; and over 100 mass % of composition it contains polyethylene polyamine as curing agent 15, and cobalt naphthenate as curing catalyst 1.8. Composition of present invention is useful in coating of metal parts and various constructions.
EFFECT: undercoat composition of high corrosion resistance, strength and lower cost.
2 tbl, 1 ex
FIELD: method for production of epoxypolymer solution useful sealing material in building industry.
SUBSTANCE: claimed epoxypolymer solution contains (mass parts): epoxydyanic resin 100; polyethylene polyamine 15; plasticizer 50; filler 200. Waste from epoxide resin production is used as plasticizer, and waste from haydite production is used as filler. Epoxypolymer solution of present invention is useful, for example as sealing and waterproofing material in rebuilding of damaged concrete and reinforced concrete constructions.
EFFECT: epoxypolymer solution with improved operating characteristics and reduced cost.
5 tbl, 8 dwg
FIELD: building industry, in particular waterproofing composition useful as waterproofing material to seal corrugation and road crack.
SUBSTANCE: claimed contains (mass parts): epoxy dianic resin 100; polyethylene polyamine 5-1`0; oil residue 10-30; bottoms from aniline production comprising 15-80 mass parts of aniline 5-20; and gravel 300-600. Mass ratio of polyethylene polyamine and bottoms from aniline production is 1:(0.5-4). Oil residue consists from hydrocarbon cuts with boiling point from 2930C to 4700C.
EFFECT: waterproofing composition with increased adhesion to concrete surface.
5 ex, 1 tbl
FIELD: insulation materials.
SUBSTANCE: method of preparing insulation compound, which can be used for impregnating and pouring high- and low-voltage components of electrical and radio equipment, transformers, and throttle valves, comprises mixing at temperature 50-60°C resin having molecular weight 1000-6000 with phosphorus-containing modifier, in particular triglycidyl phosphate or diglycidyl methyl phosphate, or diglycidyl methyl phosphonate, after which is added stoichiometric amount of hardener, in particular 4,4'-diaminodiphenylmethane or 4,4'-diaminodiphenyl sulfone, or 4,4'-diaminodiphenyl oxide.
EFFECT: reduced viscosity of compound, enhanced insulation and electric-strength properties, and simplified preparation procedure.
2 tbl, 17 ex
FIELD: building industry, in particular waterproofing composition.
SUBSTANCE: claimed composition contains (mass parts): epoxy dianic resin 100; polyethylene polyamine 5-10; oil sludge 10-30; still liquor from aniline production containing 15-80 mass parts of aniline 5-20. Mass ratio of polyethylene polyamine and said still liquor is 1:(0.5-4). Oil sludge contains hydrocarbon fractions with boiling point from 2930C to 4700C. Composition of present invention is useful as waterproofing material for plugging of corrugations and road cracks.
EFFECT: waterproofing composition of improved adhesion to concrete surface.
5 ex, 1 tbl
FIELD: varnish-and-paint industry.
SUBSTANCE: paint composition is characterized by containing resin constituent which comprises (i) non-aromatic epoxide resin, (ii) polysiloxane having formula: wherein R1 represents hydroxy or alkyl, aryl, or alkoxy group having up to 6 carbon atoms, R2 represents hydrogen or alkyl or aryl group having up to 6 carbon atoms, and n is number selected such that molecular weight of polysiloxane were within a range of 400 to 2000, and (iii) epoxysilane functioning as cross-linking agent between epoxide and siloxane chains.
EFFECT: combined anticorrosive effect, high content of solids, and low viscosity.
12 cl, 1 dwg, 1 tbl, 4 ex
FIELD: corrosion protection.
SUBSTANCE: protective ground paint for painting coiled metal and electrochemical protection of bridges, power lines, and other long term-use metallic structures contains, wt %: epoxide resin 9.0-29.0, polyamide resin 3.0-9.5, pigment 23.0-36.0, zinc nanoparticle preparation 3.0-5.0, filler 13.0-23.2, and solvent - the balance. Zinc nanoparticle preparation is introduced in the form of (0.4-4)x·10-3 M solution in isooctane.
EFFECT: enhanced protective properties.
2 tbl, 4 ex
FIELD: building materials.
SUBSTANCE: invention relates to latex-base composites used for making protective covers on polymeric materials, metal, wood, splint-slab and wood-fiber plates, concrete, ceramics, cardboard, paper and other materials. The composition comprises the following components, wt.-%: acrylate latex, 30.0-80.0; butadiene-styrene soft latex, 10.0-19.0; butadiene-styrene rigid latex, 5.0-9.0; filling agent, 12.0-21.0; pigment, 0.5-6.5; carbamide, 0.5-2.0; 10-50% alkali an aqueous solution, 0.1-2.0, and water, the balance. Invention provides preparing the cover that shows high stability under atmosphere conditions, climatic factors and wetting abrasion. The cover can be applied on materials by preliminary applying the composition by film layer on backing and the following thermal transfer of this layer from backing on surface to be covered.
EFFECT: improved, enhanced and valuable properties of composition.