CN110041802A - A kind of watersoluble plumbago alkene anticorrosive heat insulating coating and preparation method thereof - Google Patents
A kind of watersoluble plumbago alkene anticorrosive heat insulating coating and preparation method thereof Download PDFInfo
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- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
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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
- C09D5/004—Reflecting paints; Signal paints
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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
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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
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- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
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- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
Abstract
The invention discloses a kind of watersoluble plumbago alkene anticorrosive heat insulating coating, including two parts of anticorrosive heat insulating bottom coating and heat-insulated investment precoat；The anticorrosive heat insulating bottom coating is in parts by weight, include following component: 40-50 parts of bottom film forming agent, 0.05-0.5 parts of graphene, 8-12 parts of ferrotitanium powder, 10-15 parts of titanium dioxide, 8-12 parts of cenosphere, 2-5 parts of metaphosphoric acid zinc, 2-3 parts of composite assistant, 10-15 parts of water, 2-5 parts of ethylene glycol tertbutyl ether；The heat-insulated investment precoat includes following component: 50-60 parts of surface layer film forming agent, 15-20 parts of solid microbeads, 5-10 parts of titanium dioxide, 1-2 parts of composite assistant, 10-15 parts of water, 1-3 parts of ethylene glycol tertbutyl ether in parts by weight；Not only antiseptic property is excellent for the coating, but also heat-proof quality is good, has anti-corrosion, heat-insulated dual function.The addition of novel nano-material graphene significantly reduces coating cost under the premise of guaranteeing coating property.
Description
Technical field
The present invention relates to a kind of watersoluble plumbago alkene anticorrosive heat insulating coating and preparation method thereof, belong to technical field of coatings.It can
It is widely used in the heat insulating and corrosion of the high temperature service of carried of crude oil pipeline, the chemical storage tank of steel substrate and iron and steel enterprise.
Background technique
The high temperature service of the carried of crude oil pipeline in high temperature area, the chemical storage tank of steel substrate and iron and steel enterprise by
When the influence of heat source and environmental corrosion factor, it is easy to cause design library part editor and reuse irreversible damage, but also have very big peace
Full hidden danger.In the external coated anticorrosive heat insulating coating of design library part editor and reuse, it will be effectively reduced high temperature, corrosion bring economic loss
And security risk.
As shown in Figure 1, graphene has preferable structural stability and chemical inertness, two-dimensional layered structure is to corrosivity
Substance (gas, liquid, salt etc.) has certain shielding action.Using graphene as protective coating, Metal Substrate can be inhibited
Bottom is contacted with corrosivity or Oxidant, and then plays the protective effect to substrate；Meanwhile graphene can also be to coated metal
Passivation is played, the corrosion resisting property of substrate is further increased.
Insulating moulding coating is a kind of functional coating, from there are mainly three types of the classification of characteristic principle: isolation-type insulating moulding coating, anti-
Emitting insulating moulding coating and Radiation Heat-insulated Paint.Hole, thus film are filled in isolation-type adiabatic coating coating film forming caudacoria
Density it is very low, thermal coefficient is generally less than 0.06W/ (mK), thus have good heat-proof quality, the heat-insulated painting of isolation-type
Material heat insulation in practical applications and coating thickness are closely related.Reflective insulation coating is using film to light and heat
Most of energy that high reflection effect makes to shine upon on film is reflected, rather than is absorbed by film.
Summary of the invention
The technical problems to be solved by the present invention are: providing a kind of watersoluble plumbago alkene anticorrosive heat insulating coating and its preparation side
Method, not only antiseptic property is excellent for the coating, but also heat-proof quality is good, has anti-corrosion, heat-insulated dual function.Novel nano-material
The addition of graphene significantly reduces coating cost under the premise of guaranteeing coating property.
The technical scheme is that a kind of watersoluble plumbago alkene anticorrosive heat insulating coating, including anticorrosive heat insulating bottom coating and
Two parts of heat-insulated investment precoat；
The anticorrosive heat insulating bottom coating includes following component in parts by weight: 40-50 parts of bottom film forming agent, stone
It is black alkene 0.05-0.5 parts, 8-12 parts of ferrotitanium powder, 10-15 parts of titanium dioxide, 8-12 parts of cenosphere, 2-5 parts of metaphosphoric acid zinc, compound
2-3 parts of auxiliary agent, 10-15 parts of water, 2-5 parts of ethylene glycol tertbutyl ether；
The heat-insulated investment precoat includes following component: 50-60 parts of surface layer film forming agent, solid micro- in parts by weight
15-20 parts of pearl, 5-10 parts of titanium dioxide, 1-2 parts of composite assistant, 10-15 parts of water, 1-3 parts of ethylene glycol tertbutyl ether.
Further, the bottom film forming agent is aqueous epoxy emulsion.
Further, the surface layer film forming agent is aqueous acrylic emulsion.
Further, the composite assistant is in wetting agent, dispersing agent, defoaming agent, preservative, thickener and levelling agent
Two or more combinations.
The present invention also provides a kind of preparation methods of anticorrosive heat insulating bottom coating, the specific steps are as follows:
Step 1: preparing composite anti-corrosive filler
(1) in parts by weight, 1-2 parts of ethylene glycol tertbutyl ether and 6-8 part water is mixed into ethylene glycol tert-butyl
0.05-0.5 parts of graphenes are added in ethylene glycol tertbutyl ether aqueous solution and are uniformly mixed by ether aqueous solution, by mixed liquor stirring point
Ultrasonic disperse after dissipating, is prepared graphene dispersing solution；
(2) in parts by weight, the graphene dispersing solution being prepared in step (1) is taken, is added 8-12 parts of ferrotitanium powder
It is uniformly mixed with 10-15 parts of titanium dioxide, mixture is put into planetary milling reactor and carries out ball milling, is prepared
Composite anti-corrosive filler；
Step 2: preparing compound heat-insulation filler
In parts by weight, 1-3 parts of ethylene glycol tertbutyl ether and 6-8 part water is mixed into ethylene glycol tertbutyl ether water
8-12 parts of cenospheres and 2-5 parts of metaphosphoric acid zinc are added in ethylene glycol tertbutyl ether aqueous solution and are uniformly mixed, will mixed by solution
Object, which is put into planetary milling reactor, carries out ball milling, and compound heat-insulation filler is prepared；
Step 3: preparing anticorrosive heat insulating bottom coating
In parts by weight, the composite anti-corrosive filler that 40-50 parts of bottom film forming agents, step 1 is prepared, step
The two compound heat-insulation filler mixing being prepared, mixture is dispersed with high speed disperser, 2-3 is added in dispersion process
Part composite assistant, is prepared anticorrosive heat insulating bottom coating.
The present invention also provides a kind of preparation methods of heat-insulated investment precoat, the specific steps are as follows:
Step 1, in parts by weight, is mixed into ethylene glycol uncle for 1-3 parts of ethylene glycol tertbutyl ether and 10-15 part water
15-20 parts of solid microbeads and 5-10 parts of titanium dioxide are added in ethylene glycol tertbutyl ether aqueous solution and are mixed by butyl ether aqueous solution
Uniformly, mixture is put into planetary milling reactor and carries out ball milling, surface layer heat-insulating slurry is prepared；
Surface layer heat-insulating slurry will be prepared in 50-60 parts of surface layer film forming agents and step 1 in step 2, in parts by weight
Mixing, mixture is dispersed with high speed disperser, and 1-2 parts of composite assistants are added in dispersion process, are prepared heat-insulated
Investment precoat.
The present invention also provides a kind of application methods of watersoluble plumbago alkene anticorrosive heat insulating coating, the specific steps are as follows: divides bottom
It constructs with two step of surface layer；
(1) anticorrosive heat insulating bottom is constructed: anticorrosive heat insulating bottom coating being mixed with curing agent according to the proportion of 6:1, water is added
It is sprayed after adjustment viscosity, at normal temperature crosslinking curing；
(2) it heat-insulated surface construction: after the solidification of anticorrosive heat insulating bottom, is sprayed after adding water to adjust viscosity heat-insulated investment precoat
It applies, at normal temperature from solidization.
The beneficial effects of the present invention are:
1, graphene forms two-dimensional layer protection structure in the coating, moreover it is possible to play passivation to coated metal, greatly
Improve the anti-corrosive properties of coating.The graphene that the present invention chooses have passed through orientation and be modified, and the performance of graphene is more stable, has
Polar group is easily dispersed in Watery film-fomer system, is not in agglomeration traits, more has the coating prepared excellent
Anticorrosive property, heat-resisting quantity, impact resistance and toughness；
2, the present invention takes barrier heat-insulated and two kinds of mechanism synergistic effects of reflective insulation: heat-insulated barrier is to utilize thermal coefficient
Lesser extender pigment, is filled in coating, obstructs to heat, the cenosphere in anticorrosive heat insulating bottom of the present invention and partially
Trbasic zinc phosphate belongs to the lesser filler of thermal coefficient, and transmission efficiency is low for thermal energy, and heat-proof quality is excellent.Reflective insulation is to utilize
Extender pigment acts on the high reflection of light and heat, makes to shine upon most of energy on film and is reflected, rather than by
Film absorbs, and solid microbeads itself thermal coefficient in the heat-insulated surface layer of the present invention is little, and can reflect extraneous most of energy.
Bottom and surface layer composite spraying, can give full play to respective feature, have complementary advantages, and obtain excellent compound of heat-proof quality
Type coating.
3, it is rotten to be well not easy gelatinization for coating storage performance, uses water and environment-friendly type solvent as diluent, VOC content
It is low, it is environmental-friendly without toxic heavy metals such as Pb, Sb, Hg, Cr, meet European Union's RoSH environmental protection standard.
The heat-insulated bottom of anticorrosion with painting and heat-insulated surface layer on metal base, solidification obtain watersoluble plumbago alkene anticorrosive heat insulating coating
Paint film is tested and assessed as follows, as a result such as table 1
Table 1
Detailed description of the invention
Fig. 1 is graphene two-dimensional layered structure schematic diagram.
In figure: 1 is external corrosion environments, and 2 be graphene, and 3 be substrate.
Specific embodiment
To explain the technical content, the achieved purpose and the effect of the present invention in detail, it is explained below in conjunction with embodiment.
Modified graphene contains a meter Science and Technology Ltd., model using Shanghai benefit object are as follows: LN-50WB.Other examinations in all embodiments
Agent and raw material, if being commercial goods without specified otherwise
Embodiment 1
Watersoluble plumbago alkene anticorrosive heat insulating coating, including two parts of anticorrosive heat insulating bottom coating and heat-insulated investment precoat；
The anticorrosive heat insulating bottom coating includes following component in parts by weight: 40 parts of bottom film forming agent, graphene
0.05 part, 12 parts of ferrotitanium powder, 14.95 parts of titanium dioxide, 11 parts of cenosphere, 3 parts of metaphosphoric acid zinc, 2 parts of composite assistant, water 13
Part, 4 parts of ethylene glycol tertbutyl ether；The bottom film forming agent is aqueous epoxy emulsion.
The heat-insulated investment precoat includes following component: 60 parts of surface layer film forming agent, solid microbeads 16 in parts by weight
Part, 10 parts of titanium dioxide, 2 parts of composite assistant, 10 parts of water, 2 parts of ethylene glycol tertbutyl ether.The surface layer film forming agent is aqueous acrylamide
Yogurt liquid.
The composite assistant is the combination of wetting agent and dispersing agent.
The preparation method of anticorrosive heat insulating bottom coating, the specific steps are as follows:
Step 1: preparing composite anti-corrosive filler
(1) in parts by weight, 2 parts of ethylene glycol tertbutyl ether and 7 parts of water are mixed into ethylene glycol tertbutyl ether water
0.05 part of graphene is added in ethylene glycol tertbutyl ether aqueous solution and is uniformly mixed, by mixed liquor under high speed disperser by solution
500rpm is dispersed with stirring；Then three times, each 20min, midfeather 10min are prepared ultrasonic disperse under condition of ice bath
Graphene dispersing solution；
(2) in parts by weight, take the graphene dispersing solution being prepared in step (1), be added 12 parts of ferrotitanium powder and
14.95 parts of titanium dioxide are uniformly mixed, and mixture is put into planetary milling reactor and is carried out ball milling 2 hours；Ball milling
Machine revolution speed is 500rpm, changes primary ball mill direction of rotation every 20min, composite anti-corrosive filler is prepared；
Step 2: preparing compound heat-insulation filler
In parts by weight, that 2 parts of ethylene glycol tertbutyl ether and 6 parts of water are mixed into ethylene glycol tertbutyl ether is water-soluble
11 parts of cenospheres and 3 parts of metaphosphoric acid zinc are added in ethylene glycol tertbutyl ether aqueous solution and are uniformly mixed, mixture is put by liquid
It is carried out ball milling 2 hours in planetary milling reactor；Ball mill revolution speed is 500rpm, is changed every 20min primary
Compound heat-insulation filler is prepared in ball mill direction of rotation；
Step 3: preparing anticorrosive heat insulating bottom coating
In parts by weight, the composite anti-corrosive filler that 40 parts of bottom film forming agents, step 1 is prepared, step 2 system
Standby obtained compound heat-insulation filler mixing, carries out dispersion 0.5 hour with high speed disperser for mixture, during high speed dispersion
2 parts of composite assistants are added, anticorrosive heat insulating bottom coating is prepared.
The preparation method of heat-insulated investment precoat, the specific steps are as follows:
Step 1, in parts by weight, is mixed into ethylene glycol tert-butyl for 2 parts of ethylene glycol tertbutyl ether and 10 parts of water
16 parts of solid microbeads and 10 parts of titanium dioxide are added in ethylene glycol tertbutyl ether aqueous solution and are uniformly mixed, will mixed by ether aqueous solution
It closes object and is put into progress ball milling 2 hours in planetary milling reactor；Ball mill revolution speed is 500rpm, every 20min
Change primary ball mill direction of rotation, obtains surface layer heat-insulating slurry；
Step 2, in parts by weight, 60 parts of surface layer film forming agents are mixed with surface layer heat-insulating slurry is prepared in step 1
Close, by mixture with high speed disperser carry out dispersion 0.5 hour, during high speed dispersion be added 2 parts of composite assistants, obtain every
Hot-face layer coating.
The application method of watersoluble plumbago alkene anticorrosive heat insulating coating, the specific steps are as follows: bottom and two step of surface layer is divided to be applied
Work；
(1) anticorrosive heat insulating bottom is constructed: anticorrosive heat insulating bottom coating being mixed with curing agent according to the proportion of 6:1, sufficiently
Stirring, needs according to scene plus water adjustment priming paint working viscosity, amount of water are the 10-15% of anticorrosive heat insulating bottom coating weight,
Working viscosity suggestion is adjusted to 20-30s (looking into No. two cups of grace cup) spraying, at normal temperature crosslinking curing or low-temperature bake solidification；
(2) it heat-insulated surface construction: after the solidification of anticorrosive heat insulating bottom, is needed according to scene plus water adjustment finishing coat construction is glutinous
Degree, amount of water are the 10-15% of investment precoat weight, and working viscosity suggestion is adjusted to 20-30s (looking into No. two cups of grace cup) spraying,
Normal temperature self-drying solidification.
The watersoluble plumbago alkene anticorrosive heat insulating coating painting of preparation is sprayed on metal surface, base coat thickness 50um, finishing coat thickness
70um.Its thermal coefficient is 0.07W/MK after tested, 70 DEG C of huyashi-chuuka (cold chinese-style noodles) under the conditions of 100 DEG C of hot face, resistance to neutral salt spray time 1000h.
Embodiment 2
A kind of watersoluble plumbago alkene anticorrosive heat insulating coating, including two portions of anticorrosive heat insulating bottom coating and heat-insulated investment precoat
Point；
The anticorrosive heat insulating bottom coating includes following component in parts by weight: 45 parts of bottom film forming agent, graphene
0.1 part, 10 parts of ferrotitanium powder, 12.9 parts of titanium dioxide, 10 parts of cenosphere, 3 parts of metaphosphoric acid zinc, 2 parts of composite assistant, 13 parts of water,
4 parts of ethylene glycol tertbutyl ether；The bottom film forming agent is aqueous epoxy emulsion.
The heat-insulated investment precoat includes following component in parts by weight: 55 parts of surface layer film forming agent, solid microbeads 16
Part, 9 parts of titanium dioxide, 2 parts of composite assistant, 15 parts of water, 3 parts of ethylene glycol tertbutyl ether.The surface layer film forming agent is aqueous acrylamide
Yogurt liquid.
The composite assistant is the combination of defoaming agent and levelling agent.
The preparation method of anticorrosive heat insulating bottom coating, the specific steps are as follows:
Step 1: preparing composite anti-corrosive filler
(1) in parts by weight, 2 parts of ethylene glycol tertbutyl ether and 7 parts of water are mixed into ethylene glycol tertbutyl ether water
0.1 part of graphene is added in ethylene glycol tertbutyl ether aqueous solution and is uniformly mixed, by mixed liquor under high speed disperser by solution
500rpm is dispersed with stirring；Then three times, each 20min, midfeather 10min are prepared ultrasonic disperse under condition of ice bath
Graphene dispersing solution；
(2) in parts by weight, take the graphene dispersing solution being prepared in step (1), be added 10 parts of ferrotitanium powder and
12.9 parts of titanium dioxide are uniformly mixed, and mixture is put into planetary milling reactor and is carried out ball milling 2.5 hours；Ball milling
Machine revolution speed is 600rpm, changes primary ball mill direction of rotation every 20min, composite anti-corrosive filler is prepared；
Step 2: preparing compound heat-insulation filler
In parts by weight, that 2 parts of ethylene glycol tertbutyl ether and 6 parts of water are mixed into ethylene glycol tertbutyl ether is water-soluble
10 parts of cenospheres and 3 parts of metaphosphoric acid zinc are added in ethylene glycol tertbutyl ether aqueous solution and are uniformly mixed, mixture is put by liquid
It is carried out ball milling 2.5 hours in planetary milling reactor；Ball mill revolution speed is 600rpm, changes one every 20min
Secondary ball mill direction of rotation, is prepared compound heat-insulation filler；
Step 3: preparing anticorrosive heat insulating bottom coating
In parts by weight, the composite anti-corrosive filler that 45 parts of bottom film forming agents, step 1 is prepared, step 2 system
Standby obtained compound heat-insulation filler mixing, carries out dispersion 1 hour with high speed disperser for mixture, adds during high speed dispersion
Enter 2 parts of composite assistants, anticorrosive heat insulating bottom coating is prepared.
The preparation method of heat-insulated investment precoat, the specific steps are as follows:
Step 1, in parts by weight, is mixed into ethylene glycol tert-butyl for 3 parts of ethylene glycol tertbutyl ether and 15 parts of water
16 parts of solid microbeads and 9 parts of titanium dioxide are added in ethylene glycol tertbutyl ether aqueous solution and are uniformly mixed, will mixed by ether aqueous solution
Object is put into planetary milling reactor and carries out ball milling 2.5 hours；Ball mill revolution speed is 600rpm, every 20min
Change primary ball mill direction of rotation, obtains surface layer heat-insulating slurry；
Step 2, in parts by weight, 55 parts of surface layer film forming agents are mixed with surface layer heat-insulating slurry is prepared in step 1
It closes, mixture is subjected to dispersion 1 hour with high speed disperser, 2 parts of composite assistants are added during high speed dispersion, obtain heat-insulated
Investment precoat.
The application method of watersoluble plumbago alkene anticorrosive heat insulating coating, the specific steps are as follows: bottom and two step of surface layer is divided to be applied
Work；
(1) anticorrosive heat insulating bottom is constructed: anticorrosive heat insulating bottom coating being mixed with curing agent according to the proportion of 6:1, sufficiently
Stirring, needs according to scene plus water adjustment priming paint working viscosity, amount of water are the 10-15% of anticorrosive heat insulating bottom coating weight,
Working viscosity suggestion is adjusted to 20-30s (looking into No. two cups of grace cup) spraying, at normal temperature crosslinking curing or low-temperature bake solidification；
(2) it heat-insulated surface construction: after the solidification of anticorrosive heat insulating bottom, is needed according to scene plus water adjustment finishing coat construction is glutinous
Degree, amount of water are the 10-15% of investment precoat weight, and working viscosity suggestion is adjusted to 20-30s (looking into No. two cups of grace cup) spraying,
Normal temperature self-drying solidification.
The watersoluble plumbago alkene anticorrosive heat insulating coating painting of preparation is sprayed on metal surface, base coat thickness 50um, finishing coat thickness
70um.Its thermal coefficient is 0.10W/MK after tested, 72 DEG C of huyashi-chuuka (cold chinese-style noodles) under the conditions of 100 DEG C of hot face, resistance to neutral salt spray time 1300h.
Embodiment 3
A kind of watersoluble plumbago alkene anticorrosive heat insulating coating, including two portions of anticorrosive heat insulating bottom coating and heat-insulated investment precoat
Point；
The anticorrosive heat insulating bottom coating includes following component in parts by weight: 50 parts of bottom film forming agent, graphene
0.5 part, 8 parts of ferrotitanium powder, 10.5 parts of titanium dioxide, 9 parts of cenosphere, 3 parts of metaphosphoric acid zinc, 2 parts of composite assistant, 13 parts of water, second
4 parts of glycol tertbutyl ether；The bottom film forming agent is aqueous epoxy emulsion.
The heat-insulated investment precoat includes following component in parts by weight: 50 parts of surface layer film forming agent, solid microbeads 20
Part, 10 parts of titanium dioxide, 2 parts of composite assistant, 15 parts of water, 3 parts of ethylene glycol tertbutyl ether.The surface layer film forming agent is aqueous acrylamide
Yogurt liquid.
The composite assistant is the combination of wetting agent, dispersing agent, defoaming agent and levelling agent.
The preparation method of anticorrosive heat insulating bottom coating, the specific steps are as follows:
Step 1: preparing composite anti-corrosive filler
(1) in parts by weight, 2 parts of ethylene glycol tertbutyl ether and 7 parts of water are mixed into ethylene glycol tertbutyl ether water
0.5 part of graphene is added in ethylene glycol tertbutyl ether aqueous solution and is uniformly mixed, by mixed liquor under high speed disperser by solution
500rpm is dispersed with stirring；Then three times, each 20min, midfeather 10min are prepared ultrasonic disperse under condition of ice bath
Graphene dispersing solution；
(2) in parts by weight, it takes the graphene dispersing solution being prepared in step (1), 8 parts of ferrotitanium powder and two is added
10.5 parts of titanium oxide are uniformly mixed, and mixture is put into planetary milling reactor and is carried out ball milling 3 hours；Ball mill is public
Rotary speed is 800rpm, changes primary ball mill direction of rotation every 20min, composite anti-corrosive filler is prepared；
Step 2: preparing compound heat-insulation filler
In parts by weight, that 2 parts of ethylene glycol tertbutyl ether and 6 parts of water are mixed into ethylene glycol tertbutyl ether is water-soluble
9 parts of cenospheres and 3 parts of metaphosphoric acid zinc are added in ethylene glycol tertbutyl ether aqueous solution and are uniformly mixed, mixture is put by liquid
It is carried out ball milling 3 hours in planetary milling reactor；Ball mill revolution speed is 800rpm, is changed every 20min primary
Compound heat-insulation filler is prepared in ball mill direction of rotation；
Step 3: preparing anticorrosive heat insulating bottom coating
In parts by weight, the composite anti-corrosive filler that 50 parts of bottom film forming agents, step 1 is prepared, step 2 system
Standby obtained compound heat-insulation filler mixing, carries out dispersion 1 hour with high speed disperser for mixture, adds during high speed dispersion
Enter 2 parts of composite assistants, anticorrosive heat insulating bottom coating is prepared.
The preparation method of heat-insulated investment precoat, the specific steps are as follows:
Step 1, in parts by weight, is mixed into ethylene glycol tert-butyl for 3 parts of ethylene glycol tertbutyl ether and 15 parts of water
20 parts of solid microbeads and 10 parts of titanium dioxide are added in ethylene glycol tertbutyl ether aqueous solution and are uniformly mixed, will mixed by ether aqueous solution
It closes object and is put into progress ball milling 3 hours in planetary milling reactor；Ball mill revolution speed is 800rpm, every 20min
Change primary ball mill direction of rotation, obtains surface layer heat-insulating slurry；
Step 2, in parts by weight, 50 parts of surface layer film forming agents are mixed with surface layer heat-insulating slurry is prepared in step 1
It closes, mixture is subjected to dispersion 1 hour with high speed disperser, 2 parts of composite assistants are added during high speed dispersion, obtain heat-insulated
Investment precoat.
The application method of watersoluble plumbago alkene anticorrosive heat insulating coating, the specific steps are as follows: bottom and two step of surface layer is divided to be applied
Work；
(1) anticorrosive heat insulating bottom is constructed: anticorrosive heat insulating bottom coating being mixed with curing agent according to the proportion of 6:1, sufficiently
Stirring, needs according to scene plus water adjustment priming paint working viscosity, amount of water are the 10-15% of anticorrosive heat insulating bottom coating weight,
Working viscosity suggestion is adjusted to 20-30s (looking into No. two cups of grace cup) spraying, at normal temperature crosslinking curing or low-temperature bake solidification；
(2) it heat-insulated surface construction: after the solidification of anticorrosive heat insulating bottom, is needed according to scene plus water adjustment finishing coat construction is glutinous
Degree, amount of water are the 10-15% of investment precoat weight, and working viscosity suggestion is adjusted to 20-30s (looking into No. two cups of grace cup) spraying,
Normal temperature self-drying solidification.
The watersoluble plumbago alkene anticorrosive heat insulating coating painting of preparation is sprayed on metal surface, base coat thickness 50um, finishing coat thickness
70um.Its thermal coefficient is 0.15W/MK after tested, 75 DEG C of huyashi-chuuka (cold chinese-style noodles) under the conditions of 100 DEG C of hot face, resistance to neutral salt spray time 1500h.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (7)
1. a kind of watersoluble plumbago alkene anticorrosive heat insulating coating, it is characterised in that: applied including anticorrosive heat insulating bottom coating and heat-insulated surface layer
Expect two parts；
The anticorrosive heat insulating bottom coating includes following component in parts by weight: 40-50 parts of bottom film forming agent, graphene
0.05-0.5 parts, 8-12 parts of ferrotitanium powder, 10-15 parts of titanium dioxide, 8-12 parts of cenosphere, 2-5 parts of metaphosphoric acid zinc, composite assistant
2-3 parts, 10-15 parts of water, 2-5 parts of ethylene glycol tertbutyl ether；
The heat-insulated investment precoat includes following component in parts by weight: 50-60 parts of surface layer film forming agent, solid microbeads 15-
20 parts, 5-10 parts of titanium dioxide, 1-2 parts of composite assistant, 10-15 parts of water, 1-3 parts of ethylene glycol tertbutyl ether.
2. a kind of watersoluble plumbago alkene anticorrosive heat insulating coating according to claim 1, it is characterised in that: the bottom film forming agent
For aqueous epoxy emulsion.
3. a kind of watersoluble plumbago alkene anticorrosive heat insulating coating according to claim 1, it is characterised in that: the surface layer film forming agent
For aqueous acrylic emulsion.
4. a kind of watersoluble plumbago alkene anticorrosive heat insulating coating according to claim 1, it is characterised in that: the composite assistant is
Two or more combinations in wetting agent, dispersing agent, defoaming agent, preservative, thickener and levelling agent.
5. a kind of preparation method of anticorrosive heat insulating bottom coating, it is characterised in that: specific step is as follows:
Step 1: preparing composite anti-corrosive filler
(1) in parts by weight, 1-2 parts of ethylene glycol tertbutyl ether and 6-8 part water is mixed into ethylene glycol tertbutyl ether water
0.05-0.5 parts of graphenes are added in ethylene glycol tertbutyl ether aqueous solution and are uniformly mixed, after mixed liquor is dispersed with stirring by solution
Graphene dispersing solution is prepared in ultrasonic disperse；
(2) in parts by weight, it takes the graphene dispersing solution being prepared in step (1), 8-12 part of ferrotitanium powder and two is added
10-15 parts of titanium oxide are uniformly mixed, and mixture is put into planetary milling reactor and carries out ball milling, is prepared compound
Anticorrosive packing；
Step 2: preparing compound heat-insulation filler
In parts by weight, that 1-3 parts of ethylene glycol tertbutyl ether and 6-8 part water is mixed into ethylene glycol tertbutyl ether is water-soluble
8-12 parts of cenospheres and 2-5 parts of metaphosphoric acid zinc are added in ethylene glycol tertbutyl ether aqueous solution and are uniformly mixed, by mixture by liquid
It is put into planetary milling reactor and carries out ball milling, compound heat-insulation filler is prepared；
Step 3: preparing anticorrosive heat insulating bottom coating
In parts by weight, the composite anti-corrosive filler that 40-50 parts of bottom film forming agents, step 1 is prepared, step 2 system
Standby obtained compound heat-insulation filler mixing, mixture is dispersed with high speed disperser, 2-3 parts are added in dispersion process again
Auxiliary agent is closed, anticorrosive heat insulating bottom coating is prepared.
6. a kind of preparation method of heat-insulated investment precoat, it is characterised in that: specific step is as follows:
Step 1, in parts by weight, is mixed into ethylene glycol tert-butyl for 1-3 parts of ethylene glycol tertbutyl ether and 10-15 part water
15-20 parts of solid microbeads and 5-10 parts of titanium dioxide are added in ethylene glycol tertbutyl ether aqueous solution and are uniformly mixed by ether aqueous solution,
Mixture is put into planetary milling reactor and carries out ball milling, surface layer heat-insulating slurry is prepared；
Step 2, in parts by weight, 50-60 parts of surface layer film forming agents are mixed with surface layer heat-insulating slurry is prepared in step 1
It closes, mixture is dispersed with high speed disperser, 1-2 parts of composite assistants are added in dispersion process, insulation surface is prepared
Coating.
7. a kind of application method of watersoluble plumbago alkene anticorrosive heat insulating coating, which is characterized in that specific step is as follows: dividing bottom and face
Two step of layer are constructed；
(1) anticorrosive heat insulating bottom is constructed: anticorrosive heat insulating bottom coating being mixed with curing agent according to the proportion of 6:1, water is added to adjust
It is sprayed after viscosity, at normal temperature crosslinking curing or low-temperature bake solidification；
(2) heat-insulated surface construction: after the solidification of anticorrosive heat insulating bottom, spraying after adding water to adjust viscosity heat-insulated investment precoat,
At normal temperature from solidization.
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Cited By (1)
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| CN116426179A (en) * | 2023-04-27 | 2023-07-14 | 武汉理工大学 | Thermal insulation composite coating and preparation method and application thereof |
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Application publication date: 20190723 |