CN103555159A - Alkyd resin anticorrosive coating - Google Patents

Abstract

The invention discloses an alkyd resin anticorrosive coating. The alkyd resin anticorrosive coating is characterized by comprising two components of A and B, wherein the component A comprises linseed oil, phthalic anhydride, glycerol, pentaerythritol, Ca-Al phosphorus silicate, titanium dioxide, barium sulfate and mica; and the component B comprises dimethylbenzene. With the technical solution, environmental pollutions caused by zinc- and phosphate-rich conventional anticorrosive coatings can be effectively solved. An anticrorrosive agent adopted by the alkyd resin anticorrosive coating can play anticrorrosive effects in three aspects such as physics, chemistry and electrochemistry.

Description

A kind of Synolac anticorrosive coating

Technical field

The present invention relates to a kind of anticorrosive coating, relate in particular to a kind of Synolac anticorrosive coating free from environmental pollution.

Background technology

The features such as phthalic resin coating has weathering resistance, sticking power is good and bright, plentiful, and easy construction.Be widely used in the applications such as the buildingss such as bridge and machinery, vehicle, boats and ships, aircraft, instrument, but it is softer to film, water-fast, alkali resistance is not good enough, conventional phthalic resin coating can not play good anticorrosion ability.

For the anticorrosion ability playing, traditional way is in coating the inside, to add anticorrosive agent, for example red lead, lead powder, and zinc, barium, plumbous chromic salt etc.The coating that these pigment are modulated into has good non-corrosibility, is effective anticorrosive.But these additives itself are poisonous, to HUMAN HEALTH and environment structure serious pollution and threat.

Zinc phosphate is as most important integral part in non-toxic anticorrosion erosion pigment; its anti-corrosion capability has obtained coating and has defined certainly, still, and because the particle of common zinc phosphate is larger; its shape is brick shape; specific area is less, bad dispersibility, and solubleness is low and water-disintegrable poor; protection against corrosion is active not enough; the speed that forms effective protective membrane is too slow, and Corrosion Protection does not reach the level of traditional zinc-chrome yellow, is difficult to replace traditional poisonous rust-stabilising pigment comprehensively.And zinc is enrichment in soil, can make in plant materials also enrichment and cause the humans and animals of edible this kind of plant to be injured.Zine ion and the replacement participating in soil containing zinc complex ion are reacted, and often have fixedly phenomenon of absorption.Excessive zinc also can make soil lose activity, and number of bacteria reduces, and the microbial process in soil weakens.With particularly larger on the impact of wheat growth on farm crop containing zinc rural sewage disposal farm, can cause wheat to emerge uneven, tiller few, plant is short and small, and blade occurs sallow.And phosphoric acid salt wherein can cause the eutrophication of water body, cause algal bloom to cause content of oxygen dissolved in water decline, water quality deterioration, lake degeneration, havoc water ecological setting, threaten hydrobiological existence and human health, and excessive phosphorus can affect ocean environment, the generation of initiation red tide.

Summary of the invention

The deficiency existing in order to solve prior art, the object of patent of the present invention is to provide a kind of containing zinc, and has the Synolac anticorrosive coating free from environmental pollution of corrosion proof function.

To achieve these goals, the technical scheme that patent of the present invention adopts is:

An anticorrosive coating, is characterized in that: comprise A, two components of B:

A component is by weight:

Linseed oil 15-20

Tetra hydro Phthalic anhydride 8-10

Glycerine 2-3

Tetramethylolmethane 3-5

Ca-Al silicophosphate 8-10

Titanium dioxide 3-5

Barium sulfate 8-10

Mica 8-10

B component is by weight:

Dimethylbenzene 30-40

Described Ca-Al silicophosphate is that 31:7:28:26:8 mixing makes by calcium oxide, aluminium sesquioxide, silicon-dioxide, Vanadium Pentoxide in FLAKES, distilled water according to per-cent, and pH value is 7.1.

The anticorrosive agent that the art of this patent adopts is compared with traditional phosphoric acid zinc salt, and phosphorus acid content has reduced 20%, and not containing zinc, has solved zinc enrichment and phosphoric acid salt enrichment pollution on the environment.Ca-Al silicophosphate pH value of water solution is 7.1, meta-alkalescence, and steel is to start to produce passivation at 7 o'clock at pH value, therefore, is conducive to protection against corrosion.After Ca-Al silicophosphate is water-soluble, generation

ion can with the complicated complex compound of resin formation insoluble, as cathodic inhibitor, suppress electrochemical cathode reaction, play the effect of protection matrix, thereby improve anticorrosion ability, and

can strengthen the resistance to polarizability of steel surface, reduce the stability of the required critical current density of passivation and raising passive film, from electrochemical action aspect, play etch-proof effect;

ion has good chemically reactive, can be insoluble with metallic iron ion forming complex layer, stop the invasion of corrosive medium, in metallic surface, form hard passive film; In dry process, along with the evaporation of moisture, in Ca-Al silicophosphate

particle is close and polymerization reaction take place gradually, forms

the stereoscopic grid structure of key, in coating, tiny silica sol particle and the polymerization reaction take places such as ferro element of steel surface, generate silicate polymer, aggregates into huge network, coating and steel substrate are connected together, and make there is very high bonding force between coating and matrix, after being dried, whole coating can be linked to be to a complete film, and polyreaction has non-reversibility, once drying and forming-film is just again water insoluble, plays physically etch-proof effect;

be easy to environment in acid-base material generation chemical reaction generate neutral innoxious substance, the material in supercoat is not subject to the infringement of corrosives, thereby realizes anticorrosion ability from chemical aspect.Inventive of the present invention is to have added anticorrosive agent Ca-Al silicophosphate on the basis of common phthalic resin coating, thereby played the anticorrosion ability that common phthalic resin coating does not have, other ancillary components are the requisite integral parts that form and improve coating property.

Adopt after the technical program, can effectively solve existing anticorrosive coating due to the environmental pollution of being rich in zinc and phosphoric acid salt and causing, and the anticorrosive agent that patent of the present invention adopts can play etch-proof effect from physics, chemistry, three aspects of electrochemistry, has obvious creativeness and novelty.

Embodiment

According to specific embodiment, the invention will be further described below:

embodiment 1

Synolac anticorrosive coating of the present invention, comprises A, two components of B:

A component (weight part):

Linseed oil 15

Tetra hydro Phthalic anhydride 8

Glycerine 2

Tetramethylolmethane 3

Ca-Al silicophosphate 8

Titanium dioxide 3

Barium sulfate 8

Mica 8

B component (weight part):

Dimethylbenzene 30

Described Ca-Al silicophosphate is that 31:7:28:26:8 mixing makes by calcium oxide, aluminium sesquioxide, silicon-dioxide, Vanadium Pentoxide in FLAKES, distilled water according to per-cent, and pH value is 7.1.

embodiment 2

Synolac anticorrosive coating of the present invention, comprises A, two components of B:

A component (weight part):

Linseed oil 18

Tetra hydro Phthalic anhydride 9

Glycerine 2.5

Tetramethylolmethane 4

Ca-Al silicophosphate 9

Titanium dioxide 4

Barium sulfate 9

Mica 9

B component (weight part):

Dimethylbenzene 35

Described Ca-Al silicophosphate is that 31:7:28:26:8 mixing makes by calcium oxide, aluminium sesquioxide, silicon-dioxide, Vanadium Pentoxide in FLAKES, distilled water according to per-cent, and pH value is 7.1.

embodiment 3

Synolac anticorrosive coating of the present invention, comprises A, two components of B:

A component (weight part):

Linseed oil 20

Tetra hydro Phthalic anhydride 10

Glycerine 3

Tetramethylolmethane 5

Ca-Al silicophosphate 10

Titanium dioxide 5

Barium sulfate 10

Mica 10

B component (weight part):

Dimethylbenzene 40

Described Ca-Al silicophosphate is that 31:7:28:26:8 mixing makes by calcium oxide, aluminium sesquioxide, silicon-dioxide, Vanadium Pentoxide in FLAKES, distilled water according to per-cent, and pH value is 7.1.

Claims (1)

1. a Synolac anticorrosive coating, is characterized in that: comprise A, two components of B:

A component is by weight:

Linseed oil 15-20

Tetra hydro Phthalic anhydride 8-10

Glycerine 2-3

Tetramethylolmethane 3-5

Ca-Al silicophosphate 8-10

Titanium dioxide 3-5

Barium sulfate 8-10

Mica 8-10

B component is by weight:

Dimethylbenzene 30-40

Described Ca-Al silicophosphate is that 31:7:28:26:8 mixing makes by calcium oxide, aluminium sesquioxide, silicon-dioxide, Vanadium Pentoxide in FLAKES, distilled water according to per-cent, and pH value is 7.1.