CN105602396A - Epoxy zinc-rich primer - Google Patents
Epoxy zinc-rich primer Download PDFInfo
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- CN105602396A CN105602396A CN201410669673.6A CN201410669673A CN105602396A CN 105602396 A CN105602396 A CN 105602396A CN 201410669673 A CN201410669673 A CN 201410669673A CN 105602396 A CN105602396 A CN 105602396A
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Abstract
The invention relates to an epoxy zinc-rich primer. The epoxy zinc-rich primer comprises the following raw materials in parts by weight: 40-50 parts of epoxy resin, 10-12 parts of castor oil, 5-15 parts of zinc dust, 5-12 parts of iron oxide red, 1-10 parts of acetone, 8-13 parts of xylene, 5-8 parts of zinc phosphate, 3-10 parts of mica powder, 1-5 parts of a modified polyamine curing agent, 0.5-3 parts of a titanate coupling agent, 1-3 parts of a polyamide wax anti-settling agent, 1-3 parts of a cosolvent, 0.5-2 parts of a drier, and 0.5-2 parts of a water absorbing agent. The epoxy zinc rich primer can effectively permeate into a wall base, provides excellent adhesive force and strong sealing performance; can effectively prevent saline alkali substances in the wall from exuding, can avoid damage on a finish paint, and has the advantages of excellent performance, economy and environmental protection; overlapping of flake zinc powder in parallel can be formed in a coating, the systems are arranged in an overlapping mode, coating porosity is reduced, shielding property of the coating is increased, and adhesive force and corrosion resisting performances can be obviously increased.
Description
Technical field
The present invention relates to paint field, relate in particular to a kind of epoxy zinc rich primer.
Background technology
Under nature, the corrosion of iron and steel is a kind of spontaneous behavior, the considerable damage effect of steel corrosion causes people's concern day by day, people adopt various means to delay the speed of steel corrosion, to extend the service life of steel construction, such as improving base material, select anticorrosive, increase the coat of metal, add corrosion inhibiter, adopt electrochemical protection and brushing anticorrosive coating etc., consider, adopting anticorrosive paint is a kind of the most frequently used method to steel construction protection, it is convenient that it has construction maintenance, anticorrosion ability is good, the advantage that operating expenses and cost are low.
Zinc-rich paint is one of priming paint conventional in current China anticorrosive coating system, and its corrosion-resisting function is that in corrosive environment, corrosion is sacrificed zinc powder and protected iron and steel, is also like this even if coating surface has damage or scratches. Therefore, make the effect of film conduction performance sacrificial anode, just require to contain a large amount of zinc fine particles in film, they are in contact with one another, and also keep electrically contacting with steel matrix. The advantages such as zinc rich primer has that antiseptic property is strong, excellent heat resistance, adhesive force are good, are widely used in the protection of steamer, offshore production platform, container, harbour, gate, storage tank, pipeline and bridge etc. for a long time.
Zinc rich primer can be divided into 3 types of inorganic, organic, organic/inorganic fusion by film forming matter difference. It is film forming base-material that organic zinc-rich paint is commonly used epoxy, chlorinated rubber, vinylite and polyurethane resin, and the most conventional is epoxy zinc-enriched paint. Epoxy zinc rich primer is a kind of sacrificial anode type anticorrosive paint, and application and scope relate to the surface anticorrosion processing of the steel component that the anticorrosions such as petrochemical equipment, sea or off-shore structure, transportation machinery, engineering machinery and various storage tanks have relatively high expectations. At present, on market, there are various epoxy zinc rich primers, but existed the problems such as salt spray resistance is bad, cost is higher, therefore, needed the epoxy zinc rich primer that a kind of protection effect of exploitation is good, cost is low badly, to meet actual demand.
Summary of the invention
For the problems referred to above, the invention provides the epoxy zinc rich primer of a kind of function admirable, economic environmental protection.
For realizing above-mentioned purpose of the present invention, the invention provides a kind of epoxy zinc rich primer, formed by the raw material of following parts by weight: epoxy resin 40-50 part, castor oil 10-12 part, zinc powder 5-15 part, iron oxide red 5-12 part, acetone 1-10 part, dimethylbenzene 8-13 part, trbasic zinc phosphate 5-8 part, mica powder 3-10 part, modified multicomponent amine hardener 1-5 part, titanate coupling agent 0.5-3 part, polyamide wax anti-settling agent 1-3 part, cosolvent 1-3 part, drier 0.5-2 part, water absorbing agent 0.5-2 part.
Described cosolvent is fatty alcohol, and described drier is lead naphthenate, and described modified multicomponent amine hardener is the mixture of watersoluble modified fatty amine and aqueous polyamide.
Described iron oxide red can improve the density of paint film, reduces permeable; Described water absorbing agent is vinyltrimethoxy silane; Described zinc powder is zinc flake, and the fineness of this zinc flake is 800 orders.
Compared with prior art beneficial effect of the present invention.
Epoxy zinc rich primer provided by the invention can infiltrate body of wall basic unit inside effectively, and excellent adhesive force and superpower closure are provided; Can effectively prevent oozing out of the inner saline alkali material of body of wall, avoid finish paint to cause damage, function admirable, economic environmental protection; In coating, form parallel overlap joint by zinc flake, the system of folded array, the porosity of minimizing coating, improves the shielding properties of coating, and significantly improves adhesive force and decay resistance.
Detailed description of the invention
Further describe the present invention below in conjunction with specific embodiment.
Embodiment 1.
The present embodiment provides a kind of epoxy zinc rich primer, is made up of the raw material of following parts by weight: 45 parts of epoxy resin, 11.3 parts of castor oil, 9.85 parts of zinc powders, 8 parts of iron oxide reds, 6 parts, acetone, 10 parts of dimethylbenzene, 7 parts of trbasic zinc phosphates, 6 parts of mica powders, 3.5 parts of modified multicomponent amine hardeners, 1.95 parts of titanate coupling agents, 2 parts of polyamide wax anti-settling agents, 2 parts of cosolvents, 1.2 parts of drier, 1.45 parts of water absorbing agents.
Described cosolvent is fatty alcohol, and described drier is lead naphthenate, and described modified multicomponent amine hardener is the mixture of watersoluble modified fatty amine and aqueous polyamide.
Described iron oxide red can improve the density of paint film, reduces permeable; Described water absorbing agent is vinyltrimethoxy silane.
The hydroxyl containing in described epoxy resin and ehter bond, have excellent adhesive force to base material; Meanwhile, the hydrogen bond that the hydroxyl on epoxy resin strand and base material produce has promoted adhesive force. Ehter bond on epoxy resin main chain is conducive to molecule rotation, therefore have certain pliability.
Epoxy resin is under curing agent exists, the cured product obtaining is the tridimensional network body having compared with high crosslink density, is embodied in rigidity and has a surplus, and fragility is pure, under the impact of external force, can ftracture because of deformation and stress, pliability deficiency also can affect adhesive force.
Described zinc powder is zinc flake, and the fineness of this zinc flake is 800 orders. Described zinc flake forms parallel overlap joint in coating, the system of folded array, thereby reduce the porosity of coating, improve the shielding properties of coating, and zinc flake is to contact with steel plate with contact-making surface, adhesive force is better, and such structure can reduce the diffusion in coating of water, oxygen, ion greatly, and decay resistance is better.
The anticorrosion mechanism of zinc rich primer: containing a large amount of zinc powders in zinc rich primer, is in order to make zinc powder in paint film can play with steel plate close contact the effect of conduction and sacrificial anode. The protective effect of zinc-rich coating is generally believed to comprise early stage cathodic protection effect and later stage because the fine and close product that zinc powder corrosion produces stops up the shielding action that coating porosity causes. In the early stage of corrosion, by the dissolving sacrifice of zinc powder, iron and steel is played to cathodic protection effect; In the later stage, along with the corrosion of zinc powder, many corrosion products in the middle of zinc particle, are deposited, these densifications and alkalescence corrosion product is non-conductive, filled up coat of colo(u)r, stopped seeing through of the mask erosion factor, after-stage is played anticorrosion ability by shielding action. In moisture is immersed in paint film, between zinc powder and steel substrate, form micro cell, because the electrochemical potentials of Zn is much more negative than Fe, thus zinc powder be preferentially corroded, thereby iron and steel is played to cathodic protection effect. Lacking electrolyte in the situation that, the corrosion of zinc is very slow, there is no cathodic protection effect, and iron and steel is protected by edge shielding action. Its reaction equation is:
Zn→Zn2++e-0.785V
Fe2++2e→Fe-0.44V。
Zinc rich primer has " self-healing " effect, and when the paint film of zinc rich primer is subject to after mechanical damage, its steel surface exposing will have corrosion protection electric current to pass through, just deposition formation layer protecting film of the corrosion product of zinc, thus make iron and steel protected.
The performance test experiment of epoxy zinc rich primer of the present invention.
1, drying time determination experiment result: in room temperature (23 ± 2) DEG C, at the mensuration temperature of relative humidity (50 ± 5) %, the surface drying time of this epoxy zinc rich primer is 30 minutes, and dry-hard time is 60 minutes.
2, consumption paint measures test result: the theory consumption paint amount of described epoxy zinc rich primer is 8-12 square metre/kilogram/single pass (dry film 30 μ m meters); Because of degree of roughness, packing, aridity and the coating dilution ratio difference on practice of construction surface, consumption paint amount can be different.
3, condition of storage test result: the condition of storage of described epoxy zinc rich primer is: leave the dry and comfortable place, cool place of 5-35 DEG C in, packing specification is 18 kilograms/barrel.
Embodiment 2.
The present embodiment provides a kind of epoxy zinc rich primer, is made up of the raw material of following parts by weight: 43 parts of epoxy resin, 11 parts of castor oil, 5.8 parts of zinc powders, 5.5 parts of iron oxide reds, 3 parts, acetone, 9 parts of dimethylbenzene, 5.1 parts of trbasic zinc phosphates, 3.75 parts of mica powders, 1.6 parts of modified multicomponent amine hardeners, 0.95 part of titanate coupling agent, 1 part of polyamide wax anti-settling agent, 1 part of cosolvent, 0.75 part of drier, 0.65 part of water absorbing agent.
Embodiment 3.
The present embodiment provides a kind of epoxy zinc rich primer, is made up of the raw material of following parts by weight: 49 parts of epoxy resin, 11.5 parts of castor oil, 13.5 parts of zinc powders, 11 parts of iron oxide reds, 9 parts, acetone, 12 parts of dimethylbenzene, 7.8 parts of trbasic zinc phosphates, 8 parts of mica powders, 4.75 parts of modified multicomponent amine hardeners, 3 parts of titanate coupling agents, 2.8 parts of polyamide wax anti-settling agents, 2.5 parts of cosolvents, 1.5 parts of drier, 1.75 parts of water absorbing agents.
Claims (9)
1. an epoxy zinc rich primer, it is characterized in that, formed by the raw material of following parts by weight: epoxy resin 40-50 part, castor oil 10-12 part, zinc powder 5-15 part, iron oxide red 5-12 part, acetone 1-10 part, dimethylbenzene 8-13 part, trbasic zinc phosphate 5-8 part, mica powder 3-10 part, modified multicomponent amine hardener 1-5 part, titanate coupling agent 0.5-3 part, polyamide wax anti-settling agent 1-3 part, cosolvent 1-3 part, drier 0.5-2 part, water absorbing agent 0.5-2 part.
2. epoxy zinc rich primer as claimed in claim 1, it is characterized in that, formed by the raw material of following parts by weight: 45 parts of epoxy resin, 11.3 parts of castor oil, 9.85 parts of zinc powders, 8 parts of iron oxide reds, 6 parts, acetone, 10 parts of dimethylbenzene, 7 parts of trbasic zinc phosphates, 6 parts of mica powders, 3.5 parts of modified multicomponent amine hardeners, 1.95 parts of titanate coupling agents, 2 parts of polyamide wax anti-settling agents, 2 parts of cosolvents, 1.2 parts of drier, 1.45 parts of water absorbing agents.
3. epoxy zinc rich primer as claimed in claim 1, it is characterized in that, formed by the raw material of following parts by weight: 43 parts of epoxy resin, 11 parts of castor oil, 5.8 parts of zinc powders, 5.5 parts of iron oxide reds, 3 parts, acetone, 9 parts of dimethylbenzene, 5.1 parts of trbasic zinc phosphates, 3.75 parts of mica powders, 1.6 parts of modified multicomponent amine hardeners, 0.95 part of titanate coupling agent, 1 part of polyamide wax anti-settling agent, 1 part of cosolvent, 0.75 part of drier, 0.65 part of water absorbing agent.
4. epoxy zinc rich primer as claimed in claim 1, it is characterized in that, formed by the raw material of following parts by weight: 49 parts of epoxy resin, 11.5 parts of castor oil, 13.5 parts of zinc powders, 11 parts of iron oxide reds, 9 parts, acetone, 12 parts of dimethylbenzene, 7.8 parts of trbasic zinc phosphates, 8 parts of mica powders, 4.75 parts of modified multicomponent amine hardeners, 3 parts of titanate coupling agents, 2.8 parts of polyamide wax anti-settling agents, 2.5 parts of cosolvents, 1.5 parts of drier, 1.75 parts of water absorbing agents.
5. epoxy zinc rich primer as claimed in claim 1, is characterized in that, described cosolvent is fatty alcohol.
6. epoxy zinc rich primer as claimed in claim 1, is characterized in that, described drier is lead naphthenate.
7. epoxy zinc rich primer as claimed in claim 1, is characterized in that, described modified multicomponent amine hardener is the mixture of watersoluble modified fatty amine and aqueous polyamide.
8. epoxy zinc rich primer as claimed in claim 1, is characterized in that, described water absorbing agent is vinyltrimethoxy silane.
9. epoxy zinc rich primer as claimed in claim 1, is characterized in that, described zinc powder is zinc flake, and the fineness of this zinc flake is 800 orders.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410669673.6A CN105602396A (en) | 2014-11-21 | 2014-11-21 | Epoxy zinc-rich primer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410669673.6A CN105602396A (en) | 2014-11-21 | 2014-11-21 | Epoxy zinc-rich primer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105602396A true CN105602396A (en) | 2016-05-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410669673.6A Pending CN105602396A (en) | 2014-11-21 | 2014-11-21 | Epoxy zinc-rich primer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105602396A (en) |
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2014
- 2014-11-21 CN CN201410669673.6A patent/CN105602396A/en active Pending
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Application publication date: 20160525 |
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| WD01 | Invention patent application deemed withdrawn after publication |