Protective lacquer composition and method of applying protective coating on waveguide devices made from copper-zinc alloys having complex shape

FIELD: chemistry.

SUBSTANCE: protective lacquer composition for articles made from copper-zinc alloys based on KC-0125 lacquer contains 68±2% solution in diacetone and isopropyl alcohol of maleinised polybutadiene, modified with phenol resin with addition of 25% aqueous ammonia and a mixture of isopropyl alcohol and water in ratio of 1:1 and acrylic copolymer with pH of the composition equal to 6.5-7.5. The method of applying a protective coating onto waveguide devices made from copper-zinc alloys having a complex shape involves preparing the surface, chemical cleaning, washing in hot water, washing in flowing cold water, etching, washing in flowing cold water, passivation, washing in flowing cold water. The lacquer film is deposited onto waveguide devices made from copper-zinc alloys having a complex shape by simple immersion of the said lacquer composition for 3-5 minutes at 15-28°C and then washing with flowing cold water, drying for not less than 0.5 hours at 110-120°C.

EFFECT: protective lacquer composition can form a corrosion-resistant coating on the surface of copper-zinc alloys.

2 cl, 3 ex

 

The invention relates to a lacquer protective composition and method for producing a lacquer protective coating on slozhnoprofilnyh waveguide device of the copper-zinc alloys and can be used in the radio industry, instrumentation, aviation industry and other fields of national economy for products operating in different climatic conditions.

In modern technique known waterborne lacquer composition for corrosion protection of alloys [U.S. Pat. Of the Russian Federation No. 2191791 published 27.10.2002, consisting of:

Lac HT-0125260-280 g/l
Ammonia 25%aqueous solution10-12 ml/l
Ethanolof 0.4-0.6 ml/l
Fatty acid desiccant LCD 113-15 g/l
A mixture of isopropyl alcohol and water (1:1)to 1 l
the pH of the composition6,5-7,0,

and the way the application includes the following operations: chemical degreasing, washing in hot water, rinse in cold running water, etching, rinsing in cold p is otocnog water, passivation, rinsing in cold running water, application of a lacquer composition by soaking at a temperature of 15-35°C for 10-20 minutes, removing from the composition, rinse in cold running water, removing condensed moisture and termootdelenii at a temperature of 125-180°C for at least 0.5 hour hour.

Closest to the technical nature of the proposed composition is a protective lacquer composition for the coating of copper alloys [Patent No. 2249024 published 27.03.2005,] containing the foaming agent, which is used as a varnish HT-0125, representing 68±2%solution in isopropyl and diacetone alcohol malaysiaand polybutadiene modified phenolic resin with the addition of 25%aqueous ammonia solution, and a mixture of isopropyl alcohol and water in the ratio 1:4 in the following ratio of components:

Lac HT-012550-100 g/l
25%aqueous ammonia solution3-6 ml/l
A mixture of isopropyl alcohol and water 1:4to 1 l
the pH of the composition6,5-7,0,

and the way to produce a protective coating on slozhnoprofilnyh Volno adnie device of the copper alloy includes chemical degreasing, rinse in hot running water, rinse in cold running water, etching, rinsing in cold running water, passivation, rinsing in cold running water, activating the solution composition:

orthophosphoric acid, ml/l1,5
substance auxiliary OP-7 or OP-10, g/l10

polyoxyethylenesorbitan esters

within 20-40 s temperature 15-35°C, drying in air to remove condensed moisture, a protective lacquer composition on slozhnoprofilnyh waveguide device of the copper alloy according to claim 1 at a temperature of 15-35°With simple immersion for 3-5 minutes, rinse in cold running water, drying at a temperature of 125-180°C is not less than 0.5 hours

This method of obtaining multi-operational, the floor has a small thickness and has a low corrosion resistance.

An object of the invention is the creation of a protective lacquer composition that can form on the surface of the copper-zinc alloys corrosion-resistant coating, while reducing the number of operations.

The solution is achieved by the fact that the protective lacquer composition for articles of copper-zinc alloys, based varnish HT-0125, (TU 2313-034-00204151-200, representing 68±2% solution in diacetone and isopropyl alcohol malaysiaand poly-butadiene rubber modified phenolic resin with the addition of 25%aqueous ammonia solution (GOST 24147-80) and isopropyl alcohol (GOST 29805-84) and water.

New in the proposed protective lacquer composition is that the mixture of isopropyl alcohol and water purchased in the ratio of 1:1, and optionally enter acrylic copolymer (TU 2216-001-47228584) in the following ratio of components:

Lac HT-0125170-220 g/l
25%aqueous ammonia solution0,9-1,0 ml/l
Acrylic copolymer3,0-4,0 g/l
A mixture of isopropyl alcohol and water 1:1to 1 l
the pH of the composition6,5-7,5

As the acrylic copolymer can be used either Lacri as - the product of polymerization of methacrylic and acrylic esters, styrene (TU 2216-002-51764779-2000), or Lacri M is the product of copolymerization of methacrylic esters (TU 2216-001-47-228584-99)or BMC 5 - product of the copolymerization of methacrylic acid and its ester (TU 2216-518-00208947-2009).

Obtaining protective is th lacquer compositions are thoroughly mixing varnish HT-0125 and acrylic copolymer at room temperature, adding to the mixture of 25%aqueous ammonia solution and mixing. The resulting composition was diluted with a mixture of an aqueous solution of isopropyl alcohol and water in the ratio of 1:1 to the desired volume.

The method of obtaining a varnish coating on slozhnoprofilnyh waveguide device of the copper-zinc alloy includes surface preparation, chemical degreasing, washing in hot water, rinse in cold running water, etching, rinsing in cold running water, passivation, rinsing in cold running water, a protective lacquer film on slozhnoprofilnyh waveguide device of the copper-zinc alloys produced by simple immersion for 3-5 minutes at a temperature 15-28°C, rinse in cold running water, drying is not less than 0.5 hour.

New in the proposed method of obtaining a varnish coating on slozhnoprofilnyh waveguide device of the copper-zinc alloys is that the drying is carried out at a temperature of 110-120°C.

When applied to copper-zinc alloys offered by way of the proposed protective lacquer composition is formed corrosion-resistant, uniform thickness filled with varnish film, resistant to climatic factors.

Example 1.

Was conducted to protect against corrosion of the proposed composition of the products of alloy LS-59 when SL is blowing mode coating.

Surface preparation:

- degreasing (white spirit);

- rinse in cold running water;

chemical degreasing at a temperature of 60°C

(Na2CO3- 30 kg/m3, Na3PO4- 40 kg/m3, Na2SiO3- 5 kg/m3);

- rinse in hot running water;

- rinse in cold running water;

- etching at a temperature of (20±5)°C (HNO3- 1 m3H2SO4- 1 m3NaCl - 10 m3);

- rinse in cold running water;

- passivation at a temperature of (20±5)°C (CrO3- 75 kg/m3H2SO4- 15 kg/m3);

- rinse in cold running water.

A protective lacquer coating was carried out by simple immersion in composition:

Lac HT-0125170 g/l
25%aqueous ammonia solution0.9 ml/l
Acrylic copolymer3 g/l
A mixture of isopropyl alcohol and water 1:1to 1 l
the pH of the composition6,5

The coating is applied at a temperature of 20°C for 3 minutes, then is:

- rinse in cold p is otocnog water;

- drying at 110°C for 0.5 hour.

Obtained benign in appearance floor. Coupling with a basis determined by the method of cross-hatch test is 1 point.

These parts are tested at cyclic temperatures from -60°C to 85°C (3 cycles), the effect of coastal fog within 7 days and tropical humidity for 12 days (relative humidity (98±2)% at 40°C).

After testing the parts cut and subjected to a thorough examination. The appearance of the varnish film remained unchanged, corrosion on the alloy LS-59 was not found, the film thickness uniform 5-10 microns.

Example 2.

Conducted corrosion protection proposed protective lacquer composition waveguide structures with a cross section of the channel 13×3 with a length of 500 mm of L-63 in the following mode:

Surface preparation (example 1).

A protective lacquer composition was made according to example 1 in composition:

Lac HT-0125200 g/l
25%aqueous ammonia solution1.0 ml/l
Acrylic copolymer3.5 g/l
A mixture of isopropyl alcohol and water 1:1up to 1 liter/td>
the pH of the composition7,0

The coating is applied at a temperature of 25°C for 4 minutes, then:

- rinse in cold running water;

- drying at 115°C for 0.5 hour.

Obtained benign in appearance of the coating, firmly linked with brass base. After testing, the effects of high humidity and sea fog (example 1) the appearance of the varnish film remained unchanged. Corrosion on brass alloy was not observed.

Example 3.

Conducted corrosion protection of structures made of alloy L-86 by the following technological scheme:

Surface preparation (example 1).

The application of the varnish film produced in example 1 in composition:

Lac HT-0125220 g/l
25%aqueous ammonia solution1.0 ml/l
Acrylic copolymer4.0 g/l
A mixture of isopropyl alcohol and water 1:1to 1 l
the pH of the composition7,5

The coating is applied at a temperature of 30°C for 5 minutes, then:

- rinse in cold running water;

- su is ka at 120°C for 0.5 hour.

Obtained benign in appearance of the coating, firmly linked with brass base. After testing, the effects of high humidity and sea fog (example 1) the appearance of the varnish film remained unchanged. Corrosion on brass alloy was not observed.

1. Protective lacquer composition for articles of copper-zinc base alloys varnish HT-0125, representing (68±2)%solution in diacetone and isopropyl alcohol malaysiaand polybutadiene, modified phenolic resin with the addition of ammonia water of 25%and a mixture of isopropyl alcohol and water, wherein the mixture of isopropyl alcohol and water purchased in the ratio of 1:1, and optionally enter acrylic copolymer in the following ratio of components:

Lac HT-0125170-220 g/l
25%aqueous ammonia solution0,9-1,0 ml/l
Acrylic copolymer3,0-4,0 g/l
A mixture of isopropyl alcohol and water (1:1)to 1 l
the pH of the composition6,5-7,5

2. The method of applying a lacquer coating on selenoprotein the waveguide device of copper-zinc alloys, including surface preparation, chemical degreasing, washing in hot water, rinse in cold running water, etching, rinsing in cold running water, passivation, rinsing in cold running water, a protective lacquer film on slozhnoprofilnyh waveguide device of the copper-zinc alloy according to claim 1 simple immersion for 3-5 min at a temperature 15-28°C, rinse in cold running water, drying at least 0.5 h at a temperature of 110-120°C.



 

Same patents:

FIELD: chemistry.

SUBSTANCE: protective lacquer composition for devices made from aluminium alloys based on KC-0125 lacquer contains 68±2% solution in diacetone and isopropyl alcohol of maleinised polybutadiene, modified with phenol resin with addition of 25% aqueous ammonia and a mixture of isopropyl alcohol and water in ratio of 1:1 and acrylic copolymer with pH of the composition equal to 6.5-7.5. The method of applying a protective coating onto waveguide devices made from aluminium alloys having a complex shape is realised by preparing the surface by etching, washing in flowing hot water, washing in flowing cold water, clarification, washing in flowing cold water, chemical oxidation, washing in flowing cold water, removing condensed moisture, chemical cleaning and washing in flowing cold water. Said lacquer composition is then applied by simple immersion for 3-5 minutes at 15-35°C and washing in flowing cold water. The lacquer coating is deposited in a solution containing linoleic acid, oxalic acid, mixture of isopropyl alcohol and water in ratio of 1:1 and then washing in flowing cold water, removing condensed moisture and curing at 110-120°C for not less than 30 minutes.

EFFECT: obtaining a protective lacquer coating which can form a non-porous, corrosion-resistant coating on the surface of oxidised aluminium alloys with reduction of hardening temperature of the composition.

2 cl, 3 ex

FIELD: chemistry.

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23 cl, 5 tbl, 24 ex

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9 cl, 1 dwg

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8 cl, 4 tbl, 76 ex

FIELD: construction.

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EFFECT: getting environmentally safe low toxic film-forming material, reduced specific moisture permeability of the film, enhanced strength of concrete.

6 tbl

FIELD: chemistry.

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3 cl, 1 tbl

FIELD: inorganic chemistry.

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3 ex

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3 cl, 5 ex

FIELD: special compositions.

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2 tbl

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2 tbl, 9 ex

FIELD: chemistry.

SUBSTANCE: protective lacquer composition for devices made from aluminium alloys based on KC-0125 lacquer contains 68±2% solution in diacetone and isopropyl alcohol of maleinised polybutadiene, modified with phenol resin with addition of 25% aqueous ammonia and a mixture of isopropyl alcohol and water in ratio of 1:1 and acrylic copolymer with pH of the composition equal to 6.5-7.5. The method of applying a protective coating onto waveguide devices made from aluminium alloys having a complex shape is realised by preparing the surface by etching, washing in flowing hot water, washing in flowing cold water, clarification, washing in flowing cold water, chemical oxidation, washing in flowing cold water, removing condensed moisture, chemical cleaning and washing in flowing cold water. Said lacquer composition is then applied by simple immersion for 3-5 minutes at 15-35°C and washing in flowing cold water. The lacquer coating is deposited in a solution containing linoleic acid, oxalic acid, mixture of isopropyl alcohol and water in ratio of 1:1 and then washing in flowing cold water, removing condensed moisture and curing at 110-120°C for not less than 30 minutes.

EFFECT: obtaining a protective lacquer coating which can form a non-porous, corrosion-resistant coating on the surface of oxidised aluminium alloys with reduction of hardening temperature of the composition.

2 cl, 3 ex

FIELD: process engineering.

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EFFECT: simple, fast and efficient method.

19 cl, 4 ex

FIELD: process engineering.

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17 cl, 4 dwg

FIELD: technological processes.

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EFFECT: provision of possibility to create tactile image, where it is possible to feel tactile transition between the first and second distinguishable areas, creation of bank note or secured document, which has tactile properties for assistance to blind people in verification of bank note or document authenticity, and also creation of image having optically modified area and having tactile areas above optically modified area.

19 cl, 13 dwg, 5 ex

FIELD: chemistry.

SUBSTANCE: composition is obtained through hydrolysis of a mixture of oligomeric products of photo-oxidation of hexafluoropropylene containing 60-90 wt % acid fluoride of perfluoropolyoxaalkyl carboxylic acid and 10-40 wt % perfluoropolyoxaalkyl ketone. The composition contains from 10 to 40% perfluoropolyoxaalkyl dihydroxides of general formula (I): , where: n=10-40; m=0-10; l=0-1; x=1-3, and from 90 to 60% perfluoropolyoxaalkyl carboxylic acid of general formula (II): where: n=10-40; m=0-10; l=0-1; x=1-3. A coating on a substrate is obtained using this composition. The composition is used as a lubricant.

EFFECT: optimum combination of antifriction, anti-adhesion and anticorrosion properties.

3 cl, 16 ex, 3 tbl

FIELD: mechanics.

SUBSTANCE: invention can be used for applying wear resistant, antifriction and corrosion resistant coats on work surface of the elements of tribocouplings to increase service life of parts in contact with abrasive media. Proposed method comprises depositing particles of aluminium or its alloy in the form of preset-size layer onto part surface pre-processed by rotary metal brush driven along aluminium bar and micro-arc oxidising of deposited layer.

EFFECT: higher efficiency of coat application with high coat quality.

1 dwg

FIELD: construction.

SUBSTANCE: invention relates to cleaning of surfaces made from natural and artificial stones, ceramic materials and may be used for cleaning buildings faces and interiors from atmospheric contamination and for maintenance activities. Method of buildings faces and interiors cleaning includes cleaning with water, drying and applying hydrophobisated compositions in two layers. As soon as the first layer is applied, it is exposed before the second layer application during the time needed for complete hydrophobisated composition absorption. Polysiloxane resin emulsion Tego Phobe 6600 is dissolved in water at ratio 1:4-5 and used as hydrophobisated composition for the first layer. As hydrophobisated composition in the second layer, a composition is used, that contains styrene-acryl dispersion, silicon resin or silicon resins mixture, pigments, disperser, thickener, emulsifier, foam killer, preserving agent, coalescent and water at the stated ratio of components.

EFFECT: cleaning of surfaces and protection from recontamination.

1 tbl, 3 ex

FIELD: production processes.

SUBSTANCE: invention refers to production of decorative elements and concerns method of production of decorative elements, marking in particular. Method includes the following stages: thermal forming of multilayer film containing first - transparent protective layer, second - decorative layer containing pigment, and third - supporting layer made of thermal formed plastic so that recesses in film can be formed; filling of recesses with hardenable resin which adheres to the third layer of film; covering of the third layer with cap plate in such a way that to cover resin in recesses, which is in the process of hardening, and cutting-off of film around recesses thus getting layered decorative element containing a piece of mentioned film, resin layer and piece of mentioned plate.

EFFECT: invention ensures production of shiny marking without use of methods of injection moulding and chroming.

14 cl, 12 dwg

FIELD: chemistry.

SUBSTANCE: invention relates to thin-film interference coatings for coating optical elements. A method is proposed for making thin 50-200 nm single-layer antireflection coating based on mesoporous silica on objects made from silicate glass with transmission maximum of 97.0 to 98.5% in the visible spectrum, involving a) sol-gel process of silicon tetraalkoxide in the presence of an organic additive in concentration of 0.1 to 5.0 wt % to the weight of the sol, using nanostructure self-organising techniques, induced by evaporating solvent EISA, b) heating a sample with coating in an air atmosphere at 300 to 600°C for several hours for thermal decomposition of the organic additive. The organic additive, which determines spontaneous micro-separation of inorganic and organic phases during formation of solid coating on glass, is in form of carbon-chain polymers, which contain lateral ether or ester groups or carbon-chain static copolymers, containing ether groups and ester groups.

EFFECT: design of a method of obtaining cheap coating with low refraction index of 1,25-1,34.

1 cl, 7 dwg, 7 ex

FIELD: construction.

SUBSTANCE: invention is related to decorative art and is related to method for production of decorative coating by powders of various colours and their decorative finishing. Onto previously processed surface, along contour of previously made pattern, a layer of coating material is applied - colour sand or powder or colourful microglitter with the help of slowly drying binder, for instance gel, then surface is dried, and item is ornamented with various ornaments, afterwards item is coated by varnish.

EFFECT: new method of decorative coat production.

FIELD: chemistry.

SUBSTANCE: protective lacquer composition for devices made from aluminium alloys based on KC-0125 lacquer contains 68±2% solution in diacetone and isopropyl alcohol of maleinised polybutadiene, modified with phenol resin with addition of 25% aqueous ammonia and a mixture of isopropyl alcohol and water in ratio of 1:1 and acrylic copolymer with pH of the composition equal to 6.5-7.5. The method of applying a protective coating onto waveguide devices made from aluminium alloys having a complex shape is realised by preparing the surface by etching, washing in flowing hot water, washing in flowing cold water, clarification, washing in flowing cold water, chemical oxidation, washing in flowing cold water, removing condensed moisture, chemical cleaning and washing in flowing cold water. Said lacquer composition is then applied by simple immersion for 3-5 minutes at 15-35°C and washing in flowing cold water. The lacquer coating is deposited in a solution containing linoleic acid, oxalic acid, mixture of isopropyl alcohol and water in ratio of 1:1 and then washing in flowing cold water, removing condensed moisture and curing at 110-120°C for not less than 30 minutes.

EFFECT: obtaining a protective lacquer coating which can form a non-porous, corrosion-resistant coating on the surface of oxidised aluminium alloys with reduction of hardening temperature of the composition.

2 cl, 3 ex

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