CN109294406A - A kind of wet-heat resisting durably anticorrosion paint and preparation method thereof - Google Patents
A kind of wet-heat resisting durably anticorrosion paint and preparation method thereof Download PDFInfo
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- CN109294406A CN109294406A CN201811213221.1A CN201811213221A CN109294406A CN 109294406 A CN109294406 A CN 109294406A CN 201811213221 A CN201811213221 A CN 201811213221A CN 109294406 A CN109294406 A CN 109294406A
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- parts
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- epoxy resin
- wet
- heat resisting
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Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
- C09D163/04—Epoxynovolacs
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/18—Fireproof paints including high temperature resistant paints
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/32—Phosphorus-containing compounds
- C08K2003/321—Phosphates
- C08K2003/327—Aluminium phosphate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
Abstract
The invention discloses a kind of wet-heat resisting durably anticorrosion paints and preparation method thereof to belong to special coating technical field.The wet-heat resisting durably anticorrosion paint includes the component of following parts by weight: 30-45 parts of novolac epoxy resin, 5-15 parts of bisphenol A type epoxy resin, 0.5-3 parts of polyamide, 2-15 parts of aluminium triphosphate, 5-20 parts of graphite flakes, 5-20 parts of barium sulfate, 2-15 parts of hollow ceramic microspheres, 0.1-1 parts of coupling agent, 2-15 parts of calcium ion-exchanged anti-corrosion paint, 0.1-1 parts of dispersing agent, 0.1-1 parts of wetting agent, 0.1-1 parts of defoaming agent, 0.1-2 parts of dioctyl phthalate, 15-30 parts of solvent, 7-35 parts of curing agent.Coating resistance to acid and alkali of the present invention, heat resistance, solvent resistance are good and easy for construction, can be widely used for the long-effective corrosion of hardware or concrete structure under hygrothermal environment.
Description
Technical field
The invention belongs to technical field of coatings, and in particular to a kind of wet-heat resisting durably anticorrosion paint is particularly suitable for power plant
Flue, the out of stock system of desulfurization, heat exchanger etc..
Technical background
With the rapid development of economy, coal-fired thermal power generation, the gas cleaning that the sources of atmospheric pollution such as chemical industry boiler are equipped with are set
Standby performance is continuously improved, and type is increasing, due to containing oxygen, carbon dioxide, sulfur dioxide and nitrogen oxide in flue gas
And the ingredients such as hydrogen chloride, when smog discharge temperature is reduced to dew point or less by party's flue gas purifying technique, extension will be set in purification
Standby surface sweating, occurs electrochemical corrosion.Therefore, anti-corrosion is the major issue that must be solved.In order to inhibit its corrosion, lead to
Often apply corrosion-inhibiting coating on cleaning equipment surface.Epoxy resin coating is the anticorrosive paint being most widely used, general to select
Use bisphenol A type epoxy resin as the base-material of coating.However, when epoxy coating is under hygrothermal environment, since its is resistance to
High-temperature behavior is poor, and coating service life will be substantially reduced, especially when epoxy coating is under acid medium environment,
Service life is even more to drastically reduce.
Compared with epoxy resin, phenolic resin have better heat resistance, acid resistance and solvent resistance, but alkali resistance compared with
Difference.The advantages of both being had both using phenolic resin modified epoxy resin has good heat resistance, resistance to acid and alkali and resistance to molten
Agent is expected to be used as the main film forming matter of hardware surface anticorrosion coating under hygrothermal environment.In view of novolac epoxy resin
Structural rigidity is larger, should promote coating flexibility using proper method.Further, it is contemplated that Practical Project is constructed, anticorrosive paint preferably may be used
Normal temperature cure.Therefore, the good and easy for construction corrosion-inhibiting coating of resistance to acid and alkali, heat resistance, solvent resistance is developed for ensuring to set
There is important practical value in terms of standby safe and stable operation and reduction under hygrothermal environment.
Summary of the invention
To solve the above problems, the present invention provides a kind of wet-heat resisting durably anticorrosion paint, the coating have resistance to acid and alkali,
The good and easy for construction feature of heat resistance, solvent resistance, especially suitable for being used for a long time under the hygrothermal environments such as flue.
Technical scheme is as follows:
A kind of 1 wet-heat resisting durably anticorrosion paint, according to parts by weight, which includes following components:
30-45 parts of novolac epoxy resin, 5-15 parts of bisphenol A type epoxy resin, 0.5-3 parts of polyamide, aluminium triphosphate 2-
15 parts, 5-20 parts of graphite flakes, 5-20 parts of barium sulfate, 2-8 parts of hollow ceramic microspheres, 0.1-1 parts of coupling agent, calcium ion-exchanged it is anti-
Rotten pigment 2-15 parts, 0.1-1 parts of dispersing agent, 0.1-1 parts of wetting agent, 0.1-1 parts of defoaming agent, dioctyl phthalate 0.1-2
Part, 15-30 parts of solvent, 7-35 parts of curing agent.
A kind of 2 wet-heat resisting durably anticorrosion paints, preparation method includes the following steps:
15-30 parts of mixed solvent of dimethylbenzene and cyclohexanone are weighed, 5-15 parts of epoxy resin (E-20) is placed in isothermal reaction
In kettle, kept for 90-100 DEG C of temperature, stirring to epoxy resin is all dissolved, and it is stand-by to form solution A
By above-mentioned solution A cooling temperature to 65 DEG C, 0.5-5 parts of amine are then weighed, is slowly dropped in solution A, side edged stirs
It mixes, being kept stirring speed is 3000~4500r/min, forms solution B after reacting 3h
65 DEG C of constant temperature, novolac epoxy resin 30-45 parts is added, is slowly added dropwise 0.1-1 parts of coupling agent, being kept stirring speed is
3000~4500r/min forms solution C after reacting 1h
Be cooled to room temperature to solution C, weigh 0.1-1 parts of dispersing agent, 0.1-1 parts of wetting agent be added in solution C, dispersion is stirred
It mixes 10 minutes, 2-15 parts of aluminium triphosphate, 5-20 parts of graphite flakes, 5-20 parts of barium sulfate, calcium ion-exchanged anti-corrosion paint 2-15
Part, high-speed stirred 1h, being kept stirring speed is 3000~4500r/min.Then pass through sand mill, be ground to 20um, then plus
Enter 2-15 parts of hollow ceramic microspheres.
Weigh 0.1-1 parts of defoaming agent, 0.1-2 parts of dioctyl phthalate be added slowly in ground coating, it is low
Speed is dispersed with stirring 30 minutes, filtering encapsulation.
3 wet-heat resisting durably anticorrosion paints according to claim 1, selected bisphenol A type epoxy resin are
E20, water bath heating temperature is 95 DEG C.
4. wet-heat resisting durably anticorrosion paint according to claim 1, it is characterised in that: the coupling agent is to contain amine
The silane coupling agent of base.
5 wet-heat resisting durably anticorrosion paints according to claim 1, it is characterised in that: the curing agent is phenolic aldehyde amine
Epoxy curing agent.
Design principle of the present invention is as follows:
The improvement of 1 film forming matter performance
The present invention is used with bisphenol A epoxide resin, by being graft-polymerized with polyamide at 65 DEG C, forms long-chain, and heat-resisting
Property, resistance to acid and alkali and solvent resistance it is all good novolac epoxy resin it is compound be used as film forming matter, improve single epoxy novolac film forming knot
The rigidity of structure.And by the addition of dioctyl phthalate to further increase film flexibility, phenolic aldehyde amine epoxy resin is solid
Agent has reactivity high, and curing rate is fast, can under room temperature and low temperature, moist environment quick fixed line, and have superior
Water resistance, the performance of wet and heat ageing resistant.Silane coupling agent containing amido can improve the interface cohesion of coating and metallic matrix.
The anticorrosion mechanism of 2 aluminium triphosphates
The chemical activity of tripolyphosphate radical ion is good, has very strong complexing power to many metal ions, especially to 2
Valence or trivalent iron ion have extremely strong complexing power, and this complex compound can form protective film in metal surface.And tripolyphosphate
Depolymerization reaction can occur for radical ion, and fine and close passivating film is further formed in metal surface.In addition, aluminium triphosphate can make these
Metal surface deactivation is because playing aluminium triphosphate and its modifier in the anode active region of metal such as steel surface
Effect forms the result of insoluble complex.
Aluminum tripolyphosphate anti-rust pigment key property is:
1. having ion-exchange capacity；2. tripolyphosphate obtains orthophosphates, phosphate anion by depolymerization reaction
It is reacted with steel surface, forms fine and close passivation protection film；3. being slightly soluble in water, the tripolyphosphate salt ion and steel-based decomposited
The ferrous ion and ferric ion at bottom constitute chelating object, make steel surface passivation；4. nontoxic to people.Conventional wisdom is trimerization
Aluminum phosphate antirust ability is not only above the pollution-free rustproof pigments such as phosphate, aluminic acid system, boric acid system, has reached and even more than passes
The chromium system of system, red lead class weight rust resisting pigment.As a kind of nontoxic and pollution-free white rust resisting pigment, nothing is equivalent in coating
Color keeps toning extremely simple, can produce various rust resisting pigments, makes the color diversification of pigment.And this kind of face
The specific gravity of material is smaller, has strong antiseptic property, dosage is less, fundamentally reduces production cost.
The anticorrosion mechanism of 3 calcium ion-exchanged anti-corrosion paints
Calcium ion-exchanged silica gel pigment is referred mainly to, it is completely different with the anticorrosion mechanism of traditional corrosion-inhibiting pigment, work as corrosion
When property electrolyte enters film by external environment, it will be reacted first with pigment, corrosive ion is just trapped in silica gel table by the latter
On face, be adsorbed on Silica Surface calcium ion or rare earth ion occur exchange interaction, release with anticorrosive property from
Son.Anticorrosion calcium ion layer and rare earth ion layer are deposited on the interface of both metal and coating, and playing barrier action makes ground
It is isolated with external environment, while enhancing the adhesive force of coating again.Ion-exchange pigment has the advantages that uniqueness；It can be by
" need " discharge inhibition ion, and pigment effectively and is adequately utilized；Silica gel does not dissolve in the coating, occurs in oxide carrier
The exchange reaction on surface is molecular level, has no influence to pigment morphology, state this coating can be made muchly to keep complete.
The characteristics of ion-exchange type anti-corrosion paint:
It is nontoxic and be free of heavy metal；(2) efficiently, do not fall off；(3) synergistic effect is good；(4) applicability is wide
The application of 4 hollow ceramic microspheres
Hollow ceramic microspheres are made of SiO2 and A12O3, are viewed as the sphere of silvery white gloss under the microscope, hollow,
There is hard shell, be N2 or CO2 inert gas in shell, wall thickness is the 10%~20% of its diameter.With high rigidity, high abrasion
Property, acid and alkali-resistance, fire resistance, weatherability and chemical stability, there are the characteristics such as insulating properties, oil absorption, dispersibility.
5 basis proportions
30-45 parts of novolac epoxy resin, 5-15 parts of bisphenol A type epoxy resin, 0.5-3 parts of polyamide, aluminium triphosphate 2-
15 parts, 5-20 parts of graphite flakes, 5-20 parts of barium sulfate, 2-15 parts of hollow ceramic microspheres, 0.1-1 parts of coupling agent, calcium ion-exchanged
2-15 parts of anti-corrosion paint, 0.1-1 parts of dispersing agent, 0.1-1 parts of wetting agent, 0.1-1 parts of defoaming agent, dioctyl phthalate 0.1-
2 parts, 15-30 parts of solvent, 7-35 parts of curing agent.
Raw material sources and model
Specific embodiment
A kind of wet-heat resisting durably anticorrosion paint, preparation method includes the following steps:
1 weighs 15-30 parts of mixed solvent of dimethylbenzene and cyclohexanone, and it is anti-to be placed in constant temperature for 5-15 parts of epoxy resin (E-20)
It answers in kettle, is kept for 90-100 DEG C of temperature, stirring to epoxy resin is all dissolved, and it is stand-by to form solution A
Above-mentioned solution A is cooled down temperature to 65 DEG C by 2, is then weighed 0.5-5 parts of amine, is slowly dropped in solution A, side edged
Stirring, being kept stirring speed is 3000~4500r/min, forms solution B after reacting 3h
3 65 DEG C of constant temperature add novolac epoxy resin 30-45 parts, are slowly added dropwise 0.1-1 parts of coupling agent, are kept stirring speed
For 3000~4500r/min, solution C is formed after reacting 1h
4 are cooled to room temperature to solution C, weigh 0.1-1 parts of dispersing agent, 0.1-1 parts of wetting agent be added in solution C, disperse
Stirring 10 minutes, 2-15 parts of aluminium triphosphate, 5-20 parts of graphite flakes, 5-20 parts of barium sulfate, calcium ion-exchanged anti-corrosion paint 2-
15 parts, high-speed stirred 1h, being kept stirring speed is 3000~4500r/min.Then pass through sand mill, be ground to 20um, then
It is added hollow ceramic microspheres 2-15 parts.
5 weigh 0.1-1 parts of defoaming agent, 0.1-2 parts of dioctyl phthalate be added slowly in ground coating,
Stir at low speed dispersion 30 minutes, filtering encapsulation.
The embodiments of the present invention have been described in detail above, but not to limit the present invention.It should be pointed out that
For a person skilled in the art, without departing from the inventive concept of the premise, various modifications and improvements can be made,
These are all within the scope of protection of the present invention.
Claims (5)
1. a kind of wet-heat resisting durably anticorrosion paint, it is characterised in that: according to parts by weight, which includes following components:
30-45 parts of novolac epoxy resin, 5-15 parts of bisphenol A type epoxy resin, 0.5-3 parts of polyamide, 2-15 parts of aluminium triphosphate,
5-20 parts of graphite flakes, 5-20 parts of barium sulfate, 2-15 parts of hollow ceramic microspheres, 0.1-1 parts of coupling agent, calcium ion-exchanged anti-corrosion face
It is 2-15 parts of material, 0.1-1 parts of dispersing agent, 0.1-1 parts of wetting agent, 0.1-1 parts of defoaming agent, 0.1-2 parts of dioctyl phthalate, molten
15-30 parts of agent, 7-35 parts of curing agent.
2. wet-heat resisting durably anticorrosion paint according to claim 1, preparation method includes the following steps:
15-30 parts of mixed solvent of dimethylbenzene and cyclohexanone are weighed, 5-15 parts of epoxy resin (E-20) is placed in isothermal reaction kettle
It is interior, kept for 90-100 DEG C of temperature, stirring to epoxy resin is all dissolved, and it is stand-by to form solution A
By above-mentioned solution A cooling temperature to 65 DEG C, 0.5-5 parts of amine are then weighed, is slowly dropped in solution A, it is stirring while adding, it protects
Holding mixing speed is 3000~4500r/min, forms solution B after reacting 3h
65 DEG C of constant temperature, novolac epoxy resin 30-45 parts is added, is slowly added dropwise 0.1-1 parts of coupling agent, being kept stirring speed is 3000
~4500r/min forms solution C after reacting 1h
Be cooled to room temperature to solution C, weigh 0.1-1 parts of dispersing agent, 0.1-1 parts of wetting agent be added in solution C, dispersion stirring 10
Minute, add aluminium triphosphate 2-15 parts, 5-20 parts of graphite flakes, 5-20 parts of barium sulfate, 2-15 parts of trbasic zinc phosphate, carbon black 2-15
Part, high-speed stirred 1h, being kept stirring speed is 3000~4500r/min.Then pass through sand mill, be ground to 20um.
Weigh 0.1-1 parts of defoaming agent, 0.1-2 parts of dioctyl phthalate be added slowly in ground coating, low speed stirs
Mix dispersion 30 minutes, filtering encapsulation.
3. wet-heat resisting durably anticorrosion paint according to claim 1, selected bisphenol A type epoxy resin is E20, water
Bathing heating temperature is 95 DEG C.
4. wet-heat resisting durably anticorrosion paint according to claim 1, it is characterised in that: the coupling agent is to contain amido
Silane coupling agent.
5. wet-heat resisting durably anticorrosion paint according to claim 1, it is characterised in that: the curing agent is phenolic aldehyde amine epoxy
Resin curing agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811213221.1A CN109294406A (en) | 2018-10-16 | 2018-10-16 | A kind of wet-heat resisting durably anticorrosion paint and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811213221.1A CN109294406A (en) | 2018-10-16 | 2018-10-16 | A kind of wet-heat resisting durably anticorrosion paint and preparation method thereof |
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| Publication Number | Publication Date |
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| CN109294406A true CN109294406A (en) | 2019-02-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811213221.1A Pending CN109294406A (en) | 2018-10-16 | 2018-10-16 | A kind of wet-heat resisting durably anticorrosion paint and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114539872A (en) * | 2022-02-07 | 2022-05-27 | 广州市联中电子科技有限公司 | Special anti-corrosion and heat and humidity resistant coating for tantalum capacitor and preparation method and application thereof |
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| CN101735725A (en) * | 2008-11-21 | 2010-06-16 | 上海振华造漆厂 | Environment-friendly polyurethane primer used universally by coiled materials and application thereof |
| CN105419569A (en) * | 2016-01-13 | 2016-03-23 | 中国科学院金属研究所 | Humidity-heat-resistant long-acting anticorrosion coating |
| CN105778421A (en) * | 2016-03-31 | 2016-07-20 | 华南理工大学 | Solvent-free anti-corrosion insulation material capable of being solidified at room temperature for petrochemical pipeline and preparation method and application of solvent-free anti-corrosion insulation material |
| CN106995651A (en) * | 2017-04-12 | 2017-08-01 | 邹亚静 | A kind of modified solventless polyurethane coating and preparation method thereof |
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2018
- 2018-10-16 CN CN201811213221.1A patent/CN109294406A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101735725A (en) * | 2008-11-21 | 2010-06-16 | 上海振华造漆厂 | Environment-friendly polyurethane primer used universally by coiled materials and application thereof |
| CN105419569A (en) * | 2016-01-13 | 2016-03-23 | 中国科学院金属研究所 | Humidity-heat-resistant long-acting anticorrosion coating |
| CN105778421A (en) * | 2016-03-31 | 2016-07-20 | 华南理工大学 | Solvent-free anti-corrosion insulation material capable of being solidified at room temperature for petrochemical pipeline and preparation method and application of solvent-free anti-corrosion insulation material |
| CN106995651A (en) * | 2017-04-12 | 2017-08-01 | 邹亚静 | A kind of modified solventless polyurethane coating and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114539872A (en) * | 2022-02-07 | 2022-05-27 | 广州市联中电子科技有限公司 | Special anti-corrosion and heat and humidity resistant coating for tantalum capacitor and preparation method and application thereof |
| CN114539872B (en) * | 2022-02-07 | 2022-11-01 | 广州市联中电子科技有限公司 | Special anti-corrosion and heat and humidity resistant coating for tantalum capacitor and preparation method and application thereof |
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Application publication date: 20190201 |