CN104893504A - Surface tolerant high-permeability priming paint for rusty surfaces - Google Patents

Abstract

The invention discloses a surface tolerant high-permeability priming paint for rusty surfaces. The surface tolerant high-permeability priming paint for rusty surfaces is composed of two parts, oil paint and a curing agent, and is prepared through the steps of oil paint preparation, curing agent preparation and preparation of the priming paint for rusty surfaces. The priming paint for rusty surfaces can be directly applied to the metal surface with a relatively thick rust layer, so that the surface treatment processes are effectively reduced, the construction processes are simplified, the construction difficulty is decreased, and the labor intensity is reduced; in addition, the priming paint can react with the rust layer to produce a protective film with high corrosion resistance, so that the entire rust layer is good in anti-rust property, durability and physical and mechanical properties, and ensures the anti-corrosion effect; meanwhile, the priming paint for rusty surfaces does not contain any solvent harmful to human bodies, such as formaldehyde and benzene, and is a non-toxic biodegradable material. The priming paint provided by the invention can be used for preservative treatment to the rusted steel components, and is not only free of environmental pollution, but also can avoid the problem of acid residues caused by traditional acid pickling.

Description

A kind of low surperficial Thief zone primer for rusty surface

Technical field

The invention belongs to technical field of chemical paint, be specifically related to a kind of low surperficial Thief zone primer for rusty surface.

Background technology

Corrosion Of Steel is ubiquitous spontaneous phenomenon, such as: steels and their products surface has rusty stains, and the oxide skin etc. of surface of steel ingot.The loss that Corrosion Of Steel causes, not only show and material itself is damaged in profile, color and luster, mechanical property etc., the quality grade of finished product (mechanical means, engineering structure etc.) and metal engineering is more importantly made to decline, precision, acuity worsens, affect its use value and even cause and scrap.Coating becomes a kind of important material preventing metallic corrosion, particularly in heavy antisepsis field, extensively use as steel construction, tunnel, bridge, urban construction facility, freeway infrastructure, rail facility, boats and ships, harbour port machine facility, petroleum installations, metallurgy and chemical industry equipment etc. are upper.But the problems such as because equipment is in the serious environment exposed, through environmental corrosion after a while or collision etc., the coating covering metallic surface may produce efflorescence, come off, particularly at some positions, dead angle, film Chang Wufa plays protective effect.In this case, people will to polish oil removing, rust cleaning, maintenance, brushing process to these facilities usually again.But, equipment is polished again, the engineering that eliminates rust is large, difficulty of construction is large for steel construction, tunnel, bridge, urban construction facility, freeway infrastructure, rail facility, boats and ships, harbour port machine facility, petroleum installations, metallurgy etc., particularly at some dead angles and when needing big area to safeguard spraying, as bottom bridge, the steel construction back side, the position such as metal slit, because polishing difficulty is large and take time and effort, cost is caused to increase.

Summary of the invention

The object of the present invention is to provide a kind of low surperficial Thief zone primer for rusty surface, it directly can be constructed in the metallic surface that rusty scale is thicker, and there is good derusting rust-proofing effect, and it is not containing any harmful solvent such as formaldehyde, benzene, belong to the material of poisonless biological degradable, environmentally safe.

For achieving the above object, the present invention adopts following technical scheme:

A kind of low surperficial Thief zone primer for rusty surface, it forms with solidifying agent two portions by painting:

(1) composition of raw materials of paint part comprises by weight: resin 25-40 part, assisted resin polymkeric substance 15-25 part, pigment 3-10 part, stopping composition 5-15 part, antirust material 8-15 part, solubility promoter 1-3 part, auxiliary agent 0.5-4 part, deionized water 5-12 part, a turn rust press down rust agent 0.5-5 part, pH adjusting agent 0.01-0.03 part;

Described resin be selected from modified epoxy, modified vinyl resin, aminoresin, acrylic resin modified in one or more;

Described assisted resin polymkeric substance is selected from one or more in fluoro-resin, Vinylite, aminoresin;

Described pigment is selected from one or more in titanium dioxide, carbon black, phthalein viridescent, medium chrome yellow medium yellow;

Described stopping composition be selected from barium sulfate, talcum powder one or both;

Described antirust material is selected from one or more in red iron oxide, zinc oxide, aluminium triphosphate, tripolyphosphate zinc, iron mica;

Described solubility promoter be selected from ethylene glycol monobutyl ether, ethylene glycol ethyl ether one or both;

Described auxiliary agent is selected from one or more in dispersion agent, flow agent, defoamer, modified alta-mud, substrate wetting agents;

Described turn of rust presses down rust agent and comprises rust transforming agent, inhibitor, one or more in complexing agent.

(2) composition of raw materials of curing agent part is 100 parts by total weight parts and comprises: amine polymer 99-99.5 part, auxiliary agent 0.5-1 part.

Described amine polymer is selected from one or more in modified fatty amine curing agent, modified polyamide solidifying agent, modification dimethyl amine solidifying agent;

Described auxiliary agent comprises one or more in dispersion agent, flow agent, substrate wetting agents, defoamer.

The preparation method of described primer for rusty surface comprises the steps:

The first step: the preparation of paint

First the deionized water of resin and material quantity 60% is dropped in condiment still and stir; Then drop into auxiliary agent, solubility promoter, pigment, antirust material, stopping composition while stirring successively, and stir 30-45 minute under 800-1200 rev/min; Fineness≤50 μm are ground to sand mill after stirring; Then in stirring material, drop into assisted resin polymkeric substance, turn rust press down rust agent high speed dispersion evenly after, adding remaining deionized water adjustment viscosity is again determined within the scope of 120-160 second to being coated with-4 glasss (25 ± 2 DEG C), and add pH adjusting agent adjust ph at 7.8-9.2, filter, weighing and bagging;

Second step: the preparation of solidifying agent

Amine polymer is dropped in reactor and stirs; Then under agitation add auxiliary agent, continue to stir 10-20 minute under 800-1200 rev/min; After stirring, filter, weighing and bagging;

3rd step: the preparation of primer for rusty surface

Paint obtained for first two steps is mixed with solidifying agent by weight 5:1 and get final product.

Rusty scale on steel surface, be a loose porous band water structure, from composition, it is again stable harmless iron cpd and the mixture of harmful iron cpd.The present invention adopts the good resin of perviousness to be base-material, under the cooperation of auxiliary agent, makes coating have good perviousness, thus infiltrates and permeate whole loose porous rusty scale, and rusty scale is bondd becomes continuous dead front type coating, to close whole rusty scale and steel surface.In this process; objectionable constituent active in the reactive group of resin in coating, pigment, auxiliary agent and rusty scale are relied on to react; generate stable conversion film or Inhibitor; while rust cleaning, fine and close protective membrane can be formed on the surface of iron and steel, make the coating with protectiveness that whole rusty scale becomes stable.

Simultaneously, the present invention also mixes assisted resin polymkeric substance in coating, it can penetrate the zone of oxidation of surface porosity under the effect of promoting agent, penetrate in the middle of middle layer and iron-based body, be combined with the iron of covalent linkage in iron oxide, and be combined by the iron in metal base surface of the bonding action between metal with organism, thus make the combination between middle layer and iron-based body tightr; On the other hand, by winding and the crosslinked action of macromolecular chain, can make combination between metallic matrix and middle layer closely and firmly, the anti-rust film that the sticking power of formation is very strong.And various rust-stabilising pigment in coating, turn rust press down the reagent such as rust agent with the use of, whole band rusty scale can be made to have good rust-preventing characteristic, weather resistance and physical and mechanical properties, as become rusty transforming agent can with ferric oxide the complex compound that produces be deposited on the surface of anti-rust film further, isolated air and water, strengthen the rustless property of anti-rust film to a certain extent, antirust time is increased.

compared with prior art, the present invention has the following advantages:

(1) primer for rusty surface of the present invention directly can be constructed in the metallic surface that rusty scale is thicker; residual rust is made to stablize passivation or conversion; active iron rust is transformed into and stablizes harmless material; thus reach the dual purpose not only eliminating rust but also protect matrix, can surface treatment procedure be reduced, simplify working procedure; reduce difficulty of construction; reduce labor intensity, ensure preservative effect, greatly reduce the environmental pollution because rust cleaning construction causes.

(2) privileged sites such as profiled metal component and the metal back side, due to the restriction of multiple condition, are difficult to reach the surface treatment standard of regulation, apply primer for rusty surface process of the present invention and can omit pretreatment process and reach satisfied preservative effect when repairing and safeguarding.

(3) primer for rusty surface process of the present invention is adopted to replace derusting by sandblast; the derusting process such as craft, mechanical grinding; directly and the corrosion thing of steel surface, oxide skin react; change into a kind of and iron and steel compact high resistance to corrosion iron and steel protective membrane at normal temperatures; make hardware at indoor placement above non-corrosive half a year; if coordinate suitable finish paint, can more than 10 years non-corrosives under field conditions (factors), illustrate that it has good derusting rust-proofing effect.

(4) primer for rusty surface of the present invention is not containing any harmful solvent such as formaldehyde, benzene, and VOC is low, not containing heavy metal, belong to the material of poisonless biological degradable, use it for the rotproofing of the steel and iron member that gets rusty, not only environmentally safe, and the problem that the acid solution that traditional pickling can be avoided to bring is residual.

Embodiment

More being convenient to make content of the present invention understand, below in conjunction with embodiment, technical solutions according to the invention are described further, but the present invention being not limited only to this.

Embodiment 1

A kind of low surperficial Thief zone primer for rusty surface, it forms with solidifying agent two portions by painting:

(1) composition of raw materials of paint part is: modified epoxy 25 kg, fluoro-resin 15 kg, titanium dioxide 4 kg, barium sulfate 5 kg, red iron oxide 8 kg, ethylene glycol monobutyl ether 1 kg, dispersion agent 0.5 kg, defoamer 0.5 kg, deionized water 5 kg, rust transforming agent 0.5 kg, pH adjusting agent 0.01 kg;

(2) composition of raw materials of curing agent part is: modified fatty amine curing agent 99.5 kg, dispersion agent 0.5 kg.

The preparation method of described primer for rusty surface comprises the steps:

The first step: the preparation of paint

First the deionized water of modified epoxy and material quantity 60% is dropped in condiment still and stir; Then drop into dispersion agent, defoamer, ethylene glycol monobutyl ether, titanium dioxide, barium sulfate, red iron oxide successively while stirring, and stir 45 minutes under 800 revs/min; Being ground to fineness with sand mill after stirring is 45 μm; Then drop in stirring material fluoro-resin, rust transforming agent high speed dispersion evenly after, then add remaining deionized water adjustment viscosity and be determined within the scope of 120 seconds to being coated with-4 glasss (25 ± 2 DEG C), and add pH adjusting agent adjust ph 9.2, filter, weighing and bagging;

Second step: the preparation of solidifying agent

Modified fatty amine curing agent is dropped in reactor and stirs; Then under agitation add dispersion agent, under 800 revs/min, continue stirring 10 minutes; After stirring, filter, weighing and bagging;

3rd step: the preparation of primer for rusty surface

Paint obtained for first two steps is mixed with solidifying agent by weight 5:1 and get final product.

Embodiment 2

A kind of low surperficial Thief zone primer for rusty surface, it forms with solidifying agent two portions by painting:

(1) composition of raw materials of paint part is: modified epoxy 30 kg, modified vinyl resin 10 kg, aminoresin 20 kg, carbon black 3 kg, barium sulfate 10 kg, talcum powder 5 kg, zinc oxide 10 kg, ethylene glycol ethyl ether 2 kg, flow agent 2 kg, modified alta-mud 2 kg, deionized water 10 kg, rust transforming agent 3 kg, pH adjusting agent 0.02 kg;

(2) composition of raw materials of curing agent part is: modified polyamide solidifying agent 99 kg, substrate wetting agents 1 kg.

The preparation method of described primer for rusty surface comprises the steps:

The first step: the preparation of paint

First the deionized water of modified epoxy, modified vinyl resin and material quantity 60% is dropped in condiment still and stir; Then drop into flow agent, modified alta-mud, ethylene glycol ethyl ether, carbon black, barium sulfate, talcum powder, zinc oxide successively while stirring, and stir 40 minutes under 1000 revs/min; Being ground to fineness with sand mill after stirring is 45 μm; Then drop in stirring material aminoresin, rust transforming agent high speed dispersion evenly after, then add remaining deionized water adjustment viscosity and be determined within the scope of 140 seconds to being coated with-4 glasss (25 ± 2 DEG C), and add pH adjusting agent adjust ph 8.4, filter, weighing and bagging;

Second step: the preparation of solidifying agent

Modified polyamide solidifying agent is dropped in reactor and stirs; Then under agitation add substrate wetting agents, under 1000 revs/min, continue stirring 15 minutes; After stirring, filter, weighing and bagging;

3rd step: the preparation of primer for rusty surface

Paint obtained for first two steps is mixed with solidifying agent by weight 5:1 and get final product.

Embodiment 3

A kind of low surperficial Thief zone primer for rusty surface, it forms with solidifying agent two portions by painting:

(1) composition of raw materials of paint part is: acrylic resin modified 35 kg, Vinylite 20 kg, aminoresin 5 kg, medium chrome yellow medium yellow 10 kg, talcum powder 10 kg, iron mica 10 kg, aluminium triphosphate 5 kg, ethylene glycol monobutyl ether 3 kg, modified alta-mud 0.5 kg, deionized water 12 kg, rust inhibitor 5 kg, pH adjusting agent 0.03 kg;

(2) composition of raw materials of curing agent part is: modified polyamide solidifying agent 70kg, Modifer solidifying agent 29.7 kg, defoamer 0.3 kg.

The preparation method of described primer for rusty surface comprises the steps:

The first step: the preparation of paint

First deionized water that is acrylic resin modified and material quantity 60% is dropped in condiment still and stir; Then drop into modified alta-mud, ethylene glycol monobutyl ether, medium chrome yellow medium yellow, talcum powder, iron mica, aluminium triphosphate successively while stirring, and stir 30 minutes under 1200 revs/min; Being ground to fineness with sand mill after stirring is 45 μm; Then in stirring material, drop into Vinylite, aminoresin, rust press down rust agent high speed dispersion evenly after, adding remaining deionized water adjustment viscosity is again determined within the scope of 160 seconds to being coated with-4 glasss (25 ± 2 DEG C), and add pH adjusting agent adjust ph 9.2, filter, weighing and bagging;

Second step: the preparation of solidifying agent

Modified polyamide solidifying agent, Modifer solidifying agent are dropped in reactor and stir; Then under agitation add defoamer, under 1200 revs/min, continue stirring 20 minutes; After stirring, filter, weighing and bagging;

3rd step: the preparation of primer for rusty surface

Paint obtained for first two steps is mixed with solidifying agent by weight 5:1 and get final product.

Gained primer for rusty surface quality measurements of the present invention is as following table:

The foregoing is only preferred embodiment of the present invention, all equalizations done according to the present patent application the scope of the claims change and modify, and all should belong to covering scope of the present invention.

Claims (4)

1. one kind low surperficial Thief zone primer for rusty surface, it is characterized in that: described primer for rusty surface forms with solidifying agent two portions by painting, and wherein the composition of raw materials of paint part comprises by weight: resin 25-40 part, assisted resin polymkeric substance 15-25 part, pigment 3-10 part, stopping composition 5-15 part, antirust material 8-15 part, solubility promoter 1-3 part, auxiliary agent 0.5-4 part, deionized water 5-12 part, a turn rust press down rust agent 0.5-5 part, pH adjusting agent 0.01-0.03 part;

The composition of raw materials of curing agent part is 100 parts by total weight parts and comprises: amine polymer 99-99.5 part, auxiliary agent 0.5-1 part.

2. low surperficial Thief zone primer for rusty surface according to claim 1, is characterized in that: resin described in the constitutive material of paint be selected from modified epoxy, modified vinyl resin, aminoresin, acrylic resin modified in one or more;

Described assisted resin polymkeric substance is selected from one or more in fluoro-resin, Vinylite, aminoresin;

Described pigment is selected from one or more in titanium dioxide, carbon black, phthalein viridescent, medium chrome yellow medium yellow;

Described stopping composition be selected from barium sulfate, talcum powder one or both;

Described antirust material is selected from one or more in red iron oxide, zinc oxide, aluminium triphosphate, tripolyphosphate zinc, iron mica;

Described solubility promoter be selected from ethylene glycol monobutyl ether, ethylene glycol ethyl ether one or both;

Described auxiliary agent is selected from one or more in dispersion agent, flow agent, defoamer, modified alta-mud, substrate wetting agents;

Described turn of rust presses down rust agent and comprises rust transforming agent, inhibitor, one or more in complexing agent.

3. low surperficial Thief zone primer for rusty surface according to claim 1, is characterized in that: amine polymer described in the constitutive material of solidifying agent is selected from one or more in modified fatty amine curing agent, modified polyamide solidifying agent, modification dimethyl amine solidifying agent;

Described auxiliary agent comprises one or more in dispersion agent, flow agent, substrate wetting agents, defoamer.

4. low surperficial Thief zone primer for rusty surface according to claim 1, is characterized in that: the preparation method of described primer for rusty surface comprises the steps:

The first step: the preparation of paint

First the deionized water of resin and material quantity 60% is dropped in condiment still and stir; Then drop into auxiliary agent, solubility promoter, pigment, antirust material, stopping composition while stirring successively, and stir 30-45 minute under 800-1200 rev/min; Fineness≤50 μm are ground to sand mill after stirring; Then in stirring material, drop into assisted resin polymkeric substance, turn rust press down rust agent high speed dispersion evenly after, adding remaining deionized water adjustment viscosity is again determined within the scope of 120-160 second to being coated with-4 glasss (25 ± 2 DEG C), and add pH adjusting agent adjust ph at 7.8-9.2, filter, weighing and bagging;

Second step: the preparation of solidifying agent

Amine polymer is dropped in reactor and stirs; Then under agitation add auxiliary agent, continue to stir 10-20 minute under 800-1200 rev/min; After stirring, filter, weighing and bagging;

3rd step: the preparation of primer for rusty surface

Paint obtained for first two steps is mixed with solidifying agent by weight 5:1 and get final product.