CN109679489A - A kind of heatproof anti-corrosion allochroic paint and preparation method thereof - Google Patents
A kind of heatproof anti-corrosion allochroic paint and preparation method thereof Download PDFInfo
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- CN109679489A CN109679489A CN201811621220.0A CN201811621220A CN109679489A CN 109679489 A CN109679489 A CN 109679489A CN 201811621220 A CN201811621220 A CN 201811621220A CN 109679489 A CN109679489 A CN 109679489A
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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
- C09D177/00—Coating compositions based on polyamides obtained by reactions forming a carboxylic amide link in the main chain; Coating compositions based on derivatives of such polymers
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- 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
- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/10—Block or graft copolymers containing polysiloxane sequences
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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
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- 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
- C09D5/082—Anti-corrosive paints characterised by the anti-corrosive pigment
- C09D5/084—Inorganic compounds
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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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/41—Organic pigments; Organic dyes
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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
- 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
- C09D7/61—Additives non-macromolecular inorganic
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- 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
- C09D7/65—Additives macromolecular
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
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- 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
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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Abstract
The invention discloses a kind of heatproof anti-corrosion allochroic paints and preparation method thereof, and wherein heatproof anti-corrosion allochroic paint is made of following raw material proportioning: end carboxyl super branched polyamide 55~60%, titanium dioxide 10~15%, cenosphere 5~10%, rust resisting pigment 5~10%, active nano calcium 5~10%, graphene 0.1~0.2%, dispersing agent 2~2.5%, defoaming agent 0.1~0.3%, anti-flash rusting auxiliary agent 1~2%, substrate wetting agents 0.5~1%, thickener 0.5~1%, deionized water 20~30%, curing agent 3~5%, camouflage paint 10~15%.The environment-friendly type heatproof anti-corrosion allochroic paint prepared through the invention, is a single-component water-based industrial coating.The anti-corrosion allochroic paint not only high temperature resistant, anticorrosion, and application field is extensive, the field of coating suitable for particular job.
Description
Technical field
The invention belongs to industrial coating technical fields more particularly to a kind of heatproof anti-corrosion allochroic paint and preparation method thereof.
Background technique
In petrochemical industry, many large-scale petroleums, chemical industry equipment for example: the hydrocracking furnace of oil plant, methanol production dress
Gasification furnace, one-stage converter gas gathering manifold, secondary reformer, the waste heat boiler, ammonia convertor of the conversion reactor, chemical fertilizer factory set
Deng, inside there are various chemical substances to carry out various physics, chemical action, also transported under high temperature or high temperature, hyperbaric environment sometimes
Row, therefore, before putting into operation, it is desirable that equipment has safety precautions, and the control of the temperature of equipment is then the pass of safety in production
One of key.
Common temperature measuring equipment can only sensing equipment a certain partial points, and cannot reflect the temperature conditions of equipment comprehensively,
Thus monitoring effect is not ideal enough.Early warning coating technology is typically now used, i.e., in one layer of early warning coating of equipment surface brushing.When
There is exception in equipment operation, and the coating color of the early warning coating of equipment surface will change, and staff can do accordingly
Correctly judge and take appropriate measures to avoid the safety accident of equipment overtemperature initiation out.Compared with using temperature measuring equipment, adopt
It is more acurrate, simple with early warning coating technology monitoring temperature.But when due to the present country to equipment coating early warning coating, generally
After equipment is simply only carried out oil removing, derusting, direct brushing early warning coating, and the main consideration again of current early warning coating
The color change of early warning coating but seldom pays close attention to the temperature tolerance and corrosion resistance of early warning coating coating.
Therefore, when equipment is under high temperature for a long time to be run, early warning coating often will appear dusting, crack, fall off
Phenomenon；When equipment long-term shutdowns, maintenance when, be also easy to corrosion phenomena occur by the erosion of water, oxygen etc..These phenomenons all can shadow
The monitoring effect of existing early warning coating is rung, and then also affects the popularization and application of early warning coating.
In addition, the development trend " greenization " due to early warning anticorrosive paint has volatility by petroleum resources and environmental regulation
The factors such as the limitation of machine substance (VOC) and hazardous air pollutants influence, and painting is being continuously improved in the industry of world's early warning anticorrosive paint
While expecting performance, just develop to " greenization " direction rapidly.
Therefore, a kind of heatproof anti-corrosion how is provided, the allochroic paint of environmental protection is asking for those skilled in the art's urgent need to resolve
Topic.
Summary of the invention
In view of this, being prepared through the invention the present invention provides a kind of heatproof anti-corrosion allochroic paint and preparation method thereof
Environment-friendly type heatproof anti-corrosion allochroic paint, be a single-component water-based industrial coating.The anti-corrosion allochroic paint not only high temperature resistant, anti-
Corrosion, and application field is extensive, the field of coating suitable for particular job.
To achieve the goals above, the present invention adopts the following technical scheme:
A kind of heatproof anti-corrosion allochroic paint is made of following raw material proportioning by weight percentage: end carboxyl super branched poly-
Amide resin 55~60%, titanium dioxide 10~15%, cenosphere 5~10%, rust resisting pigment 5~10%, active nano calcium 5~
10%, graphene 0.1~0.2%, dispersing agent 2~2.5%, defoaming agent 0.1~0.3%, anti-flash rusting auxiliary agent 1~2%, substrate
Wetting agent 0.5~1%, thickener 0.5~1%, deionized water 20~30%, curing agent 3~5%, camouflage paint 10~15%.
Preferably, a kind of heatproof anti-corrosion allochroic paint, is made of following raw material proportioning: end carboxyl super branched polyamide
57%, titanium dioxide 14%, cenosphere 8%, rust resisting pigment 7%, active nano calcium 8%, graphene 0.15%, dispersing agent
2.3%, defoaming agent 0.2%, anti-flash rusting auxiliary agent 1.7%, substrate wetting agents 0.8%, thickener 0.7%, deionized water 28%, solid
Agent 3%, camouflage paint 12%.
The coating formation basic theory of the heatproof anti-corrosion allochroic paint obtained by using above-mentioned technical proposal is as follows:
After the coating of heatproof anti-corrosion allochroic paint, under appropriate conditions, moisture volatilizees quickly, after most of moisture volatilization,
Dispersed phase particle is close to each other, tightly packed, and a small amount of water of remaining is filled between the gap of emulsion particle, forms huge capillary
Pipe pressure, wherein close to each other, accumulation emulsion particle is deformed into hexagonal structure under capillary pressure.Polyamide with
And the phase counterdiffusion between latex particle of partially cured polyamide, until forming uniform, continuous film.
Preferably, the end carboxyl super branched polyamide is that diamine, ternary acid and Amino End Group silicone oil are reacted
It is made, the diamine is Isosorbide-5-Nitrae-cyclohexanediamine and/or 1,6- hexamethylene diamine；The ternary acid be 1,2,4- benzenetricarboxylic acids and/or
1,3,5- benzenetricarboxylic acid；And the control of the molar ratio of the diamine and the ternary acid is 1: between (1.5~2).
The preparation method of above-mentioned end carboxyl super branched polyamide, specifically comprises the following steps:
Step 1: diamine and ternary acid are uniformly mixed and are heated to 75 DEG C~90 DEG C, and Amino End Group silicone oil and two are added
Toluene；
Step 2: after the reaction raw materials of step 1 are heated 1~3h at 185 DEG C~200 DEG C, 225 DEG C~235 are warming up to
DEG C, 1~3h is heated, then be cooled to 80 DEG C~90 DEG C, and sequentially add organic solvent, silicone oligomer and crosslinking thereto and urge
Agent is uniformly mixing to obtain reaction system, spare；
Step 3: the reaction system that step 2 is obtained is heated to 105 DEG C~110 DEG C, after 2~3h is reacted in heating, cooling
To 75 DEG C~80 DEG C, and a kind of modified polyamides disclosed by the invention that organic solvent stirring adjustment solid content is 55~65% is added
Polyimide resin.
By using above-mentioned technical proposal, beneficial effects of the present invention are as follows:
Diamine, ternary acid and Amino End Group silicone oil are carried out reaction and prepare end carboxyl super branched polyamide by the present invention,
Wherein the carboxyl on the amino and ternary acid on diamine carries out amidation process, while the carboxyl of ternary acid and Amino End Group silicone oil
On amino occur amidation process, by flexible silicone segment be embedded in ultrabranching polyamide in, to improve the heat-resisting of polyamide
Performance and flexibility.
Preferably, the diamine is Isosorbide-5-Nitrae-cyclohexanediamine and/or 1,6- hexamethylene diamine；The ternary acid is 1,2,4- benzene three
Formic acid and/or 1,3,5- benzenetricarboxylic acids；And the control of the molar ratio of the diamine and the ternary acid is 1: between (1.5~2).
Preferably, the weight average molecular weight of the Amino End Group silicone oil is 300~1000, and the Amino End Group silicone oil and described two
The additive amount of toluene is the diamine (0.05~0.1) times.
Wherein Amino End Group silicone oil is prepared using conventional technology, and the weight average molecular weight of the Amino End Group silicone oil uses
Gel permeation chromatography detection, ammonia value use determination of acid-basetitration.
Preferably, the weight average molecular weight of the silicone oligomer is 800~2000, is by monomethyl triethoxysilicane
One of alkane, dimethyl diethoxysilane a variety of are obtained through hydrolysis-condensation reaction；And the silicone oligomer adds
Dosage is (1.5~2.0) times of the diamine.
Preferably, the crosslinking catalyst is butyl titanate and/or tetrabutyl titanate, and the crosslinking catalyst
Additive amount is (0.01~0.05) times of the diamine.
Preferably, the organic solvent is butanol, isobutanol, propylene glycol monomethyl ether, dipropylene glycol methyl ether, dipropylene
One or more of combination, and the additive amount of the organic solvent is (1.0~1.5) times of the diamine.
Preferably, the rust resisting pigment is aluminium triphosphate, and the anti-flash rusting auxiliary agent is that the anti-flash rusting of organic and inorganic compounding helps
Agent.
The rust resisting pigment selected in the present invention is aluminium triphosphate.It is very strong that the rust resisting pigment can release complexing power
Tripolyphosphate radical ion covers corrosion activity point, because tripolyphosphate radical ion forms iron complex ion in fe-based surface to subtract
The slow corrosion of metal period.
The anti-flash rusting auxiliary agent selected in the present invention is that organic and inorganic compounds anti-flash rusting auxiliary agent, which can be same
When achieve the effect that inhibition, passivation and shielding, not only prevent ferrous metal surface of bottom material that cathode reaction occurs, but also prevent iron
Ionization and the generation of electrochemical reaction, while having many advantages, such as to improve the water resistance of coating and anti-corruption property.
The graphene selected in the present invention is that have excellent mechanical property as novel material a kind of in anticorrosive paint
With relatively strong adhesive force, the film forming of fluoropolymer resin, the comprehensive performance of coating can be improved.And the activity selected in the present invention is received
The filler of rice calcium and cenosphere as system, not only ensure that the thickness of coating, while because of active nano calcium and cenosphere
Heat-resisting material is belonged to, can be improved the heat-resisting quantity of allochroic paint.
Preferably, the defoaming agent is polyether siloxane copolymer type defoaming agent, such as the BYK-028 of Bi Ke company；It is described
Dispersing agent is the copolymer object type dispersing agent with pigment affinity groups, such as the BYK-192 of Bi Ke company.
Preferably, the substrate wetting agents are polyether siloxane copolymer type substrate wetting agents, such as Digao company
Tego100；The mobility for not only significantly improving allochroic paint makes the more smooth densification of coating, and further stops water to painting
The intrusion of layer, improves the water resistance of allochroic paint.
Preferably, the camouflage paint is phthalocyanine color, and discoloring temperature range is 300 DEG C~400 DEG C；And the phthalocyanine face
Material includes phthalocyanine blue and/or phthalocyanine green.
The present invention is by selecting strong coloring force, the phthalocyanine color that lovely luster, discoloration is obvious, thermal stability is good to be used as discoloration
Pigment not only can guarantee that paint coatings discoloration is sensitive, also reduce amount of pigment.
It is another object of the present invention to provide a kind of preparation methods of heatproof anti-corrosion allochroic paint.
To achieve the goals above, the present invention adopts the following technical scheme:
(1) by the end carboxyl super branched polyamide in part, dispersing agent, defoaming agent, titanium dioxide, rust resisting pigment, hollow micro-
Pearl, camouflage paint and active nano calcium sequentially add in deionized water, stir evenly and mixed slurry is made；
(2) above-mentioned mixed slurry is added in grinder and is ground, until forming the slurry of uniform good fluidity；
(3) successively remaining end carboxyl super branched polyamide, graphene, anti-flash rusting auxiliary agent and substrate wetting agents are added
Enter in slurry, stir evenly, and is adjusted to regulation viscosity with thickener to get heatproof anti-corrosion allochroic paint of the invention.
Preferably, in step (3), the viscosity of the heatproof anti-corrosion allochroic paint is 30-60s.
Wherein, the viscosity of the heatproof anti-corrosion allochroic paint is measured by -4# glasss of viscosimeters of painting.
Preferably, in step (1), control mixing speed is 450~550r/min, and mixing time is 15~25min.
Preferably, in step (2), the fineness of the slurry is less than 60 μm.
Preferably, in step (3), control slurry mixing speed is 550~650r/min, and mixing time is 2~6min；
Mixing speed after control addition lotion and auxiliary agent is 750~850r/min, and mixing time is 15~25min.
It can be seen via above technical scheme that compared with prior art, the present disclosure provides a kind of changes of heatproof anti-corrosion
Color coating and preparation method thereof, compared with prior art, the present invention has the advantage that
1, the present invention is by being added Amino End Group silicone oil, to improve polyamides when synthesizing end carboxyl super branched polyamide
The heat resistance and flexibility of amine；And silicone oligomer and polyamide are subjected to cross-linking reaction, improve the heat resistance of polyamide
Energy.
2, the product can satisfy wet on wet construction technology, i.e., (25-40 DEG C of temperature) spraying is resistance on the workpiece of preheating
It, both can direct spraying finishing coat after 1~2min after warm anti-corrosion allochroic paint；And the heatproof anti-corrosion being prepared through the invention becomes
Color coating has a wide range of application, and is applicable to the coating industrial circle of particular job.
3, the heatproof anti-corrosion allochroic paint prepared through the invention uses the environment-friendly type for not adding the heavy metals such as leaded, chromium class
Rust resisting pigment, and it is the low VOC of the product, non-ignitable not quick-fried, do not contain the poisonous and harmful substances such as benzene, dimethylbenzene.
4, the present invention is due to selecting strong coloring force, the phthalocyanine color that lovely luster, discoloration is obvious, thermal stability is good to be used as and become
Color pigment not only can guarantee that paint coatings discoloration is sensitive, also reduce amount of pigment；And the addition of camouflage paint is to coating
Corrosion resistance, temperature tolerance and mechanical strength are without influence.
Specific embodiment
The following is a clear and complete description of the technical scheme in the embodiments of the invention, it is clear that described embodiment
Only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, the common skill in this field
Art personnel every other embodiment obtained without making creative work belongs to the model that the present invention protects
It encloses.
The embodiment of the invention discloses a kind of heatproof anti-corrosion allochroic paint and preparation method thereof, the ring prepared through the invention
Guarantor's type heatproof anti-corrosion allochroic paint not only high temperature resistant, anticorrosion, and application field is extensive, and the coating suitable for particular job is led
Domain.
For a better understanding of the invention, further specific elaboration is made to the present invention below by following embodiment, but not
It can be regarded as limitation of the invention, it is some nonessential according to made by foregoing invention content for those skilled in the art
It improves and adjusts, be also considered as and be within the scope of the present invention.
The invention discloses a kind of heatproof anti-corrosion allochroic paints, by weight percentage, are made of following raw material proportioning: end
Carboxyl super branched polyamide 55~60%, titanium dioxide 10~15%, cenosphere 5~10%, rust resisting pigment 5~10%,
Active nano calcium 5~10%, graphene 0.1~0.2%, dispersing agent 2~2.5%, defoaming agent 0.1~0.3%, anti-flash rusting auxiliary agent
1~2%, substrate wetting agents 0.5~1%, thickener 0.5~1%, deionized water 20~30%, curing agent 3~5%, discoloration face
Material 10~15%.
In order to further optimize the above technical scheme, end carboxyl super branched polyamide is diamine, ternary acid and end
Amido silicon oil carries out reaction and is made, and the diamine is Isosorbide-5-Nitrae-cyclohexanediamine and/or 1,6- hexamethylene diamine；The ternary acid is 1,2,
4- benzenetricarboxylic acid and/or 1,3,5- benzenetricarboxylic acids；And the molar ratio of the diamine and the ternary acid is controlled 1: (1.5~
2) between.
In order to further optimize the above technical scheme, rust resisting pigment is aluminium triphosphate, and anti-flash rusting auxiliary agent is organic and inorganic
Compound anti-flash rusting auxiliary agent.
In order to further optimize the above technical scheme, substrate wetting agents are polyether siloxane copolymer type substrate wetting agents.
In order to further optimize the above technical scheme, the camouflage paint is phthalocyanine color, and discoloring temperature range is 300 DEG C
~400 DEG C；And the phthalocyanine color includes phthalocyanine blue and/or phthalocyanine green.
The invention also discloses a kind of preparation methods of heatproof anti-corrosion allochroic paint, include the following steps:
(1) by the end carboxyl super branched polyamide in part, dispersing agent, defoaming agent, titanium dioxide, rust resisting pigment, hollow micro-
Pearl, camouflage paint and active nano calcium sequentially add in deionized water, stir evenly and mixed slurry is made；
(2) above-mentioned mixed slurry is added in grinder and is ground, until forming the slurry of uniform good fluidity；
(3) successively remaining end carboxyl super branched polyamide, graphene, anti-flash rusting auxiliary agent and substrate wetting agents are added
Enter in slurry, stir evenly, and is adjusted to regulation viscosity with thickener to get heatproof anti-corrosion allochroic paint of the invention.
In order to further optimize the above technical scheme, in step (1), control mixing speed is 450~550r/min, stirring
Time is 15~25min.
In order to further optimize the above technical scheme, in step (2), the fineness of slurry is less than 60 μm.
In order to further optimize the above technical scheme, in step (3), control slurry mixing speed is 550~650r/
Min, mixing time are 2~6min；Mixing speed after control addition lotion and auxiliary agent is 750~850r/min, mixing time
For 15~25min.
Below in conjunction with specific embodiment, technical solution of the present invention is further detailed.
Embodiment 1
A kind of heatproof anti-corrosion allochroic paint is made of following raw material proportioning by weight percentage: end carboxyl super branched poly-
Amide resin 57%, titanium dioxide 10%, cenosphere 5%, aluminium triphosphate 5%, active nano calcium 5%, graphene 0.1%,
Dispersing agent 2%, defoaming agent 0.1%, organic and inorganic compound anti-flash rusting auxiliary agent 1%, substrate wetting agents 0.5%, thickener 0.5%,
Deionized water 20%, curing agent 3%, phthalocyanine blue 12%, wherein end carboxyl super branched polyamide be diamine, ternary acid and
Amino End Group silicone oil carries out reaction and is made, and curing agent is the polyamide-based curing agent of mass ratio 1: 2 and mixing for fatty amines curing agent
Object is closed, dispersing agent is the copolymer object type dispersing agent with pigment affinity groups, and defoaming agent is the defoaming of polyether siloxane copolymer type
Agent, substrate wetting agents are polyether siloxane copolymer type substrate wetting agents.
Embodiment 2
A kind of heatproof anti-corrosion allochroic paint is made of following raw material proportioning by weight percentage: end carboxyl super branched poly-
Amide resin 55%, titanium dioxide 12%, cenosphere 7%, aluminium triphosphate 8%, active nano calcium 7%, graphene 0.15%,
Dispersing agent 2.2%, defoaming agent 0.2%, organic and inorganic compound anti-flash rusting auxiliary agent 1.5%, substrate wetting agents 0.7%, thickener
0.8%, deionized water 25%, curing agent 3.5%, phthalocyanine blue 12%, wherein end carboxyl super branched polyamide be diamine,
Ternary acid and Amino End Group silicone oil carry out reaction and are made, and curing agent is that the polyamide-based curing agent of mass ratio 1: 2 and fatty amines are consolidated
The mixture of agent, dispersing agent are the copolymer object type dispersing agent with pigment affinity groups, and defoaming agent is polyether silicone copolymerization
Object type defoaming agent, substrate wetting agents are polyether siloxane copolymer type substrate wetting agents.
Embodiment 3
A kind of heatproof anti-corrosion allochroic paint, which is characterized in that by weight percentage, be made of following raw material proportioning: end
Carboxyl super branched polyamide 57%, titanium dioxide 14%, cenosphere 8%, aluminium triphosphate 7%, active nano calcium 8%,
Graphene 0.15%, dispersing agent 2.3%, defoaming agent 0.2%, organic and inorganic compound anti-flash rusting auxiliary agent 1.7%, substrate wetting agents
0.8%, thickener 0.7%, deionized water 28%, curing agent 3%, phthalocyanine green 12%, wherein end carboxyl super branched polyamide resin
Rouge be diamine, ternary acid and Amino End Group silicone oil carry out reaction be made, curing agent be mass ratio 1: 2 polyamide-based curing agent and
The mixture of fatty amines curing agent, dispersing agent are the copolymer object type dispersing agent with pigment affinity groups, and defoaming agent is polyethers
Silicone copolymers type defoaming agent, substrate wetting agents are polyether siloxane copolymer type substrate wetting agents.
Embodiment 4
A kind of heatproof anti-corrosion allochroic paint, which is characterized in that by weight percentage, be made of following raw material proportioning: end
Carboxyl super branched polyamide 58%, titanium dioxide 13%, cenosphere 8%, aluminium triphosphate 7%, active nano calcium 6%,
Graphene 0.2%, dispersing agent 2.3%, defoaming agent 0.2%, organic and inorganic compound anti-flash rusting auxiliary agent 1.7%, substrate wetting agents
0.8%, thickener 0.8%, deionized water 25%, curing agent 4%, phthalocyanine green 10%, wherein end carboxyl super branched polyamide resin
Rouge be diamine, ternary acid and Amino End Group silicone oil carry out reaction be made, curing agent be mass ratio 1: 2 polyamide-based curing agent and
The mixture of fatty amines curing agent, dispersing agent are the copolymer object type dispersing agent with pigment affinity groups, and defoaming agent is polyethers
Silicone copolymers type defoaming agent, substrate wetting agents are polyether siloxane copolymer type substrate wetting agents.
There is excellent property in order to further verify the heatproof anti-corrosion allochroic paint that the present invention is prepared, respectively from solid
Influence, different polyamide resin and curing agent influence two aspect to properties of product of the agent difference blend proportion to properties of product
Carry out control experiment.
Influence first for research curing agent difference blend proportion to properties of product, inventor have carried out as follows to according to the facts
Test: on the basis of embodiment 3 (modified polyamide type and modified aliphatic amine type ratio be 1: 2), comparative example 1 selects modified polyamides
Amine type and modified aliphatic amine type ratio are that 1: 1, comparative example 2 selects modified polyamide type and modified aliphatic amine type ratio is 2: 1,
His component is constant.
Secondly the influence for research different polyamide resin and curing agent to properties of product, inventor have carried out following control
Experiment: on the basis of embodiment 3, end carboxyl super branched polyamide selects other polyamide (comparisons in comparative example 3
End carboxyl super branched polyamide), curing agent selects that polyamide-based curing agent, curing agent is selected in comparative example 5 in comparative example 4
Fatty amines curing agent.
Finally the influence for the type and dosage of research camouflage paint to properties of product, inventor have also carried out following control
Experiment: on the basis of embodiment 3, camouflage paint selects phthalocyanine blue 10% in comparative example 6, and camouflage paint is selected in comparative example 7
Phthalocyanine green 10%, camouflage paint selects phthalocyanine blue 12% in comparative example 8, and other components are constant.
Nine kinds of heatproof anti-corrosion allochroic paints are made in disclosed preparation method according to the present invention, and carry out to the coating of formation resistance to
The performance tests such as salt fog, water resistance.Wherein according to the water resistance of GB/T 1733-1993 testing coating, according to GB/T 1771-
The salt fog resistance of 1991 testing coatings, and the template of spray-on coating is heated, coating face is recorded within the stipulated time (60min)
The temperature of color generation significant change.Specific test result participates in such as the following table 1, table 2 and table 3.
Influence of the 1 curing agent difference blend proportion of table to performance
By experiment conclude that when the ratio of polyamide-based curing agent and fatty amines curing agent be 1: 2, salt fog resistance
Best with water resistance, rate of drying is fast.
The influence of 2 different polyamide resin of table and curing agent to performance
Wherein in table 2, polyamide A is the end carboxyl super branched polyamide that the present invention uses, polyamide B
It is comparison polyamide.
In addition, curing agent A is polyamide-based curing agent, curing agent B is fatty amines curing agent.Polyamide-based curing agent is resistance to
It is salt fog good, but slow drying speed, fatty amines curing agent salt spray resistance is general, but rate of drying is fast, in order to guarantee product
Adhesive force is good on various substrates, and salt fog resistance is good, rate of drying is fast, therefore polyamide selects end carboxyl super branched polyamides
Polyimide resin, curing agent then select A and the collocation of two curing agent of B to use.
The different pigment coated color change temperatures of table 3
| Number | Coating color | Coating discoloring temperature (DEG C) |
| Embodiment 3 | Green | 370 |
| Comparative example 6 | Sky blue | 335 |
| Comparative example 7 | Green | 360 |
| Comparative example 8 | Middle blue | 350 |
As shown in Table 3, for phthalocyanine green compares phthalocyanine blue, pigment high temperature resistant, performance are stablized, and with pigment additive amount
Raising, the coating discoloring temperature of the allochroic paint increases, that is to say, that addition camouflage paint can further increase discoloration
The heat resistance of coating.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.For device disclosed in embodiment
For, since it is corresponded to the methods disclosed in the examples, so being described relatively simple, related place is said referring to method part
It is bright.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (10)
1. a kind of heatproof anti-corrosion allochroic paint, which is characterized in that by weight percentage, be made of following raw material proportioning: end carboxylic
Base ultrabranching polyamide resin 55~60%, cenosphere 5~10%, rust resisting pigment 5~10%, is lived at titanium dioxide 10~15%
Property nanometer calcium 5~10%, graphene 0.1~0.2%, dispersing agent 2~2.5%, defoaming agent 0.1~0.3%, anti-flash rusting auxiliary agent 1
~2%, substrate wetting agents 0.5~1%, thickener 0.5~1%, deionized water 20~30%, curing agent 3~5%, discoloration face
Material 10~15%.
2. a kind of heatproof anti-corrosion allochroic paint according to claim 1, which is characterized in that be made of following raw material proportioning:
End carboxyl super branched polyamide 57%, titanium dioxide 14%, cenosphere 8%, rust resisting pigment 7%, active nano calcium 8%,
Graphene 0.15%, dispersing agent 2.3%, defoaming agent 0.2%, anti-flash rusting auxiliary agent 1.7%, substrate wetting agents 0.8%, thickener
0.7%, deionized water 28%, curing agent 3%, camouflage paint 12%.
3. described in any item a kind of heatproof anti-corrosion allochroic paints according to claim 1~2, which is characterized in that the carboxyl end group
Ultrabranching polyamide resin is that diamine, ternary acid and Amino End Group silicone oil carry out reacting obtained, and the diamine is Isosorbide-5-Nitrae-hexamethylene
Diamines and/or 1,6- hexamethylene diamine；The ternary acid is 1,2,4- benzenetricarboxylic acids and/or 1,3,5- benzenetricarboxylic acids；And the binary
The molar ratio of amine and the ternary acid is controlled 1: between (1.5~2).
4. described in any item a kind of heatproof anti-corrosion allochroic paints according to claim 1~3, which is characterized in that the antirust face
Material is aluminium triphosphate, and the anti-flash rusting auxiliary agent is that organic and inorganic compounds anti-flash rusting auxiliary agent.
5. a kind of heatproof anti-corrosion allochroic paint according to any one of claims 1 to 4, which is characterized in that the substrate profit
Humectant is polyether siloxane copolymer type substrate wetting agents.
6. described in any item a kind of heatproof anti-corrosion allochroic paints according to claim 1~5, which is characterized in that the discoloration face
Material is phthalocyamine series pigment, and discoloring temperature range is 300 DEG C~400 DEG C；And the phthalocyamine series pigment include phthalocyanine blue and/or
Phthalocyanine green.
7. a kind of preparation method of heatproof anti-corrosion allochroic paint, which comprises the steps of:
(1) by the end carboxyl super branched polyamide in part, dispersing agent, defoaming agent, titanium dioxide, rust resisting pigment, cenosphere, change
Color pigment and active nano calcium sequentially add in deionized water, stir evenly and mixed slurry is made；
(2) above-mentioned mixed slurry is added in grinder and is ground, until forming the slurry of uniform good fluidity；
(3) successively remaining end carboxyl super branched polyamide, graphene, anti-flash rusting auxiliary agent and substrate wetting agents are added and are starched
It in shape object, stirs evenly, and is adjusted to regulation viscosity with thickener to get heatproof anti-corrosion allochroic paint of the invention.
8. a kind of preparation method of heatproof anti-corrosion allochroic paint according to claim 7, which is characterized in that in step (1),
Control mixing speed is 450~550r/min, and mixing time is 15~25min.
9. a kind of preparation method of heatproof anti-corrosion allochroic paint according to claim 7, which is characterized in that in step (2),
The fineness of the slurry is less than 60 μm.
10. a kind of preparation method of heatproof anti-corrosion allochroic paint according to claim 7, which is characterized in that step (3)
In, control slurry mixing speed is 550~650r/min, and mixing time is 2~6min；After lotion and auxiliary agent is added in control
Mixing speed is 750~850r/min, and mixing time is 15~25min.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114149741A (en) * | 2021-12-14 | 2022-03-08 | 湖南红四方新材料有限公司 | Preparation method of surface coating pigment of plywood |
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| CN107353773A (en) * | 2017-07-14 | 2017-11-17 | 湖南沃特邦恩新材料有限公司 | A kind of water corrosion-resistant epoxy paint containing graphene and preparation method and application |
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