RU2559488C2 - Single-component protective coating composition - Google Patents

Abstract

FIELD: chemistry.

SUBSTANCE: invention relates to a single-component protective coating composition. The composition contains an epoxy ether with weight ratio of nonvolatile substances of 50%, nanoshell muscovite, epoxidated castor oil, polymethyl diphenylsiloxane, monoethyl ether of ethylene glycol, a pigment-colourant, anhydrous aluminium dioxide, vinyltriethoxysilane-sized glass microspheres, micronised specularite, nanostructured technical carbon, nanostructured graphite, a mixture of polymetallic drying agents based on 2-ethylhexanoic acid, a solution in an organic solvent of oxime cyclohexanone, copper phthalocyanine. The epoxy ether is obtained by reacting epoxy resin and glyphtal resin.

EFFECT: invention provides anticorrosion protection of surfaces; the coating has high strength, longevity and weather resistance.

2 cl, 2 tbl

Description

FIELD OF TECHNOLOGY

The invention relates to the field of industrial and civil engineering, namely to protective compositions for metal coatings, and can be used for corrosion protection of various metal structures operated in atmospheric conditions.

BACKGROUND

Various multicomponent compositions for protective anticorrosion coatings, in particular epoxy ester based compositions, are widely known.

From the source A.S. Drinberg, E.F. Itsko, T.V. Kalinskaya. Anticorrosion primers (OOO NIPROINS LKM and P s OP, St. Petersburg, 2006) the Enamel composition EF-1219 is known for anticorrosive protection of mine and other metal structures operating in atmospheric and underground conditions, as well as on external surface surfaces of ships. It is a suspension of pigments and fillers in a solution of epoxy ester EF-0188 with a thixotropic additive and contains atactic polypropylene.

With high water resistance, the known composition can form only matte coatings, which narrows the scope of its application as a decorative coating, and also due to the presence of atactic polypropylene as a rheological additive, phototropy and a tendency to chalking are increased in it.

The objective of the present invention is to provide a composition composition for corrosion protection of surfaces with a high degree of strength, increased durability, resistance to weathering.

SUMMARY OF THE INVENTION

The problem is solved by creating a one-component composition containing an epoxy ester with a mass fraction of non-volatile substances of 50%, nano-shell muscovite, epoxidized castor oil, polymethyldiphenylsiloxane, ethylene glycol monoethyl ether, colorant pigmented, anhydrous aluminum microsulfurite, microspheres microfluorocarbonate, microfluorocarbon microspheres, microsilane, microsilane, microsilane, micronodriethane, micronodriethylene, nanostructured graphite, a mixture of polymetallic desiccants based on 2-ethylhexanoic acid, a solution in an organic solvent of cyclohexanone oxime and copper phthalocyanine.

Mass ratio of components:

epoxy ester with a mass fraction of non-volatile substances 50% 55.35-59.35 nano-shell muscovite 4-6 epoxidized castor oil 2-3 polymethyldiphenylsiloxane 0.5 ethylene glycol monoethyl ether 5 colorant pigment 10-8 anhydrous aluminum dioxide 6-4 glass microspheres, sizing vinyltriethoxysilane 1-3 speculative micronized 10-5 nanostructured carbon black 1-2 nanostructured graphite 2-1 a mixture of polymetallic driers based on 2-ethylhexanoic acid 3 solution in an organic solvent cyclohexanone oxime 0.05-0.1 copper phthalocyanine 0.1-0.05

DETAILED DESCRIPTION OF THE INVENTION

A one-component protective coating composition is formed on the basis of an epoxy ester varnish synthesized by the interaction of a film-forming base, which is a suspension of pigments, fillers, modifiers and various auxiliary substances in a solution of epoxy resins and glyphthalic resin with the addition of desiccants and antioxidants.

A coating based on a single component composition can be made in different colors.

The basis of the claimed composition is an epoxy ester with a mass fraction of non-volatile substances of 50%. The synthesis of epoxy ester is carried out due to the interaction of the hydroxyl groups of the epoxy resin and the carboxy groups of glyphthalic resin in the diffusion-kinetic region of the reactor-attritor at a temperature of 80 ° C.

Epoxidized castor oil is used in the composition as a plasticizing component; as polymethyldiphenylsiloxane, which is an antifoam-hydrophobizing agent, one of the grades KO-921, K-9, K-42 can be used as the basis. K-47; as a monoethyl ether of ethylene glycol, the base contains ethyl cellosolve GOST 8313-88; as anhydrous aluminum dioxide, which is a filler that provides increased strength, hardness and wear resistance of the composition, the base contains A 1203.

As antioxidants, a solution of cyclohexanone in an organic solvent and copper phthalocyanine are introduced into the composition. The driers introduced into the composition are a mixture of polymetallic driers based on 2-ethylhexanoic acid, containing a total of octoates: (Co - 1.25%, Ca - 0.5%, Li - 1%, Zr - 1%).

Muscovite nano-shell is used in the form of any finely dispersed pearlescent muscovite pigment from the variety of micanites with fine-deposited layers of metal dioxides. For example, a pearlescent silver white TER8120 pigment may be used.

As nanostructured carbon black can be used, for example, P-366-E or P-367-E.

As nanostructured graphite, for example, EGK-1 m can be used.

As nano-shell titanium dioxide can be used, for example, titanium dioxide TEONA 60-2.

Possible organic solvents for cyclohexanone oxime can be selected, for example, from acetone, benzene, diethyl ether or ethanol. In the examples, a quench solvent was used.

Table 1 shows examples of compositions with different proportions of components.

In table 1, component 1 is an anti-corrosion element.

Component 2 has high reflective properties and provides thermal stabilization and photo stabilization of the coating.

Component 3 is a plasticizing component.

Component 4 serves as antifoam-water repellent.

Component 5 is a low odor solvent - filling modifier.

As component 6, the claimed composition uses titanium dioxide nano-shell, red iron oxide or phthalocyanine green.

Component 7 is a filler that provides increased strength, hardness and wear resistance of the composition.

Component 8 is an ultraviolet absorber that absorbs UV radiation and increases the life of the coating.

Component 9 serves as an insulating waterproof filler.

Component 10 is a coloristic, reinforcing and anti-static pigment.

Component 11 is a relaxer of internal stresses of the coating.

Components 12, 13 and 14 are introduced as desiccants and antioxidants to control the rate of film formation.

A method of manufacturing a composition for coating includes the following stages.

1. Synthesis of epoxy ester from medium molecular weight epoxy and glyphthal resins.

2. Disaggregation of the components of the composition in the dissolver.

3. Dispersing the composition in a ball or bead mill.

4. Type setting.

5. Draining products in containers with quality control in the OTC laboratory.

Table 2 presents the main characteristics obtained in accordance with examples of coverage.

The inventive one-component composition for a protective coating with the proposed composition of components in the stated percentage ratio to each other, provides surface reinforcement, strength, elasticity, lack of fragility. Formed using the claimed composition, the coating dries quickly and can be applied to rust. Also the advantage of the claimed composition in comparison with the known is the possibility of obtaining a semi-gloss coating, resistant to chalking. These properties allow you to use the claimed composition for repair, restoration and elimination of defects on the surface.

Due to the special adhesive that forms a strong adhesion to the surface, a corrosion inhibitor that prevents further corrosion, and a rust converter that converts it to an inactive form, the resulting composition has enhanced anti-corrosion properties. Thixotropic substances in the form of a chain keep the coating from dripping. The top layer of the coating creates a barrier lamellar pigments that prevent the penetration of water through the coating.

Another advantage of the claimed coating is its cost-effectiveness, achieved through a thinner layer of polymer epoxy coating. Estimated consumption of soil-enamel per layer 120-150 ml per square. m depending on the application method. One liter of soil-enamel can be painted up to 8 square meters. meters.

Claims (2)

1. A one-component protective coating composition containing an epoxy ester with a mass fraction of non-volatile substances of 50%, nano-shell muscovite, epoxidized castor oil, polymethyldiphenylsiloxane, ethylene glycol monoethyl ether, colorant pigmented, anhydrous aluminum microsulfurite, microspheres microfluorocarbon microfluorocarbonate, micronodisulphonated microspheres, micromanetrolic microfluorocarbonate, microfluorocarbon microspheres, micromanetrolic, , nanostructured graphite, a mixture of polymetallic desiccants based on 2-ethylhexanoic acid, a solution in organic stvoritele cyclohexanone oxime and copper phthalocyanine, wherein the epoxy esters obtained by reacting epoxy resins and glyptal resin. 2. One-component composition according to claim 1, having the following ratio of the components of the base coat of the primer, mass. %:
epoxy ester with a mass fraction of non-volatile substances 50% 55.35-59.35 nano-shell muscovite 4-6 epoxidized castor oil 2-3 polymethyldiphenylsiloxane 0.5 ethylene glycol monoethyl ether 5 colorant pigment 10-8 anhydrous aluminum dioxide 6-4 glass microspheres, sizing vinyltriethoxysilane 1-3 speculative micronized 10-5 nanostructured carbon black 1-2 nanostructured graphite 2-1 a mixture of polymetallic driers based on 2-ethylhexanoic acid 3 solution in an organic solvent cyclohexanone oxime 0.05-0.1 copper phthalocyanine 0.1-0.05