CN111218171A - Fluorosilicone type heat-insulating weather-resistant anticorrosive coating for island engineering steel base material and preparation method thereof - Google Patents
Fluorosilicone type heat-insulating weather-resistant anticorrosive coating for island engineering steel base material and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a fluorine-silicon type heat-insulation weather-resistant anticorrosive coating of an island engineering steel substrate and a preparation method thereof, wherein the fluorine-silicon type heat-insulation weather-resistant anticorrosive coating comprises a main agent and a curing agent, and the main agent and the curing agent have the parts ratio of 10: 1, wherein: the main agent comprises the following formula in parts by mass: 36-40 parts of fluorocarbon resin, 8-10 parts of organic silicon resin, 13-16 parts of mixed solvent, 25-28 parts of functional filler, 16-20 parts of pigment filler, 0.2-0.3 part of salt spray resistant additive, 0.3-0.4 part of aging resistant additive, 0.2-0.3 part of ultraviolet resistant absorbent, 0.3-0.4 part of defoaming agent, 0.3-0.4 part of flatting agent and 0.3-0.4 part of wetting dispersant. The coating has the solid content of more than or equal to 75 percent, light specific gravity and good painting manufacturability, can be matched with common epoxy primer, epoxy micaceous iron intermediate paint, epoxy glass flake primer, intermediate paint, epoxy zinc-rich primer, inorganic zinc-rich primer and the like for use, has excellent salt mist resistance, aging resistance and heat insulation performance, is suitable for the use requirements of the three-high environment of the south China sea island reef, has higher cost performance, and is convenient to popularize and apply.
Description
Technical Field
The invention relates to the technical field of coatings, in particular to a fluorine-silicon type heat-insulating weather-resistant anticorrosive coating for steel base materials of island engineering and a preparation method thereof.
Background
The south China sea reef environment is a typical three-high environment (high salt spray, high humidity and heat and high sunlight), has all conditions for accelerating corrosion, has high surface temperature of steel substrates due to the fact that reef facility equipment is in the high sunlight environment for a long time, can reach 50-60 ℃ or even higher surface temperature of objects such as steel storage tanks, and has the risk of explosion when the internal temperature of the objects reaches a certain value. Because the C-F bond has higher bond energy, in order to improve the weather resistance of the protective coating for the island environment, the fluorocarbon surface coating taking fluorocarbon resin as a base material is widely applied to the island environment, but in the practical application process, the durability of the fluorocarbon coating in the island environment is obviously lower than that of an inland area due to the influence of alternating action of high temperature in the daytime and temperature difference in the day and night, the early failure of the coating in the island environment generally starts from the aging of the surface coating and then gradually permeates into the middle layer and the bottom coating, and the C-O bond of the primer coating and the middle layer coating taking epoxy resin as the base material in service at high temperature is easier to rapidly fail due to high temperature, so that the protective efficiency of the whole anticorrosive coating system is influenced. In order to solve the problem, the heat insulation design needs to be carried out aiming at the high-sunlight environment of the island, the adverse effect of high sunlight on an anticorrosive coating system is reduced, and the comprehensive performances of salt mist resistance, weather resistance and the like of the traditional fluorocarbon coating in the high-sunlight environment are improved.
In recent years, research on solar heat reflection heat insulation coatings is rapidly developed, the coatings adopt functional fillers such as hollow glass beads and pigments and fillers such as rutile titanium dioxide to realize efficient reflection of sunlight and play a role in effective heat insulation, but most of the coatings are water-based coatings and are used as building coatings, and adhesives such as styrene-acrylic emulsion, silicone-acrylic emulsion and the like are adopted as base materials.
For the steel substrate anticorrosion top coating, the functional filler is added, so that the heat generated by solar radiation is not accumulated on the surface of an object to be heated, the service microenvironment of a coating system is improved, and the durability of the existing anticorrosion top coating in a high-sunlight environment can be effectively improved.
Disclosure of Invention
The invention aims to provide a fluorosilicone type heat-insulating weather-resistant anticorrosive coating of an island engineering steel substrate and a preparation method thereof, the coating has the solid content of more than or equal to 75 percent, is light in specific gravity and good in painting manufacturability, can be matched with common epoxy primer, epoxy micaceous iron intermediate paint, epoxy glass flake primer, intermediate paint, epoxy zinc-rich primer, inorganic zinc-rich primer and the like for use, has excellent salt mist resistance, aging resistance and heat insulation performance, is suitable for the use requirements of three-high environment of the island in south China sea, has higher cost performance, is convenient to popularize and apply, and solves the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
the fluorosilicone type heat-insulating weather-resistant anticorrosive coating for the island engineering steel substrate comprises a main agent and a curing agent, wherein the main agent and the curing agent are in a weight ratio of 10: 1, wherein:
the main agent comprises the following formula in parts by mass: 36-40 parts of fluorocarbon resin, 8-10 parts of organic silicon resin, 13-16 parts of mixed solvent, 25-28 parts of functional filler, 16-20 parts of pigment filler, 0.2-0.3 part of salt spray resistant additive, 0.3-0.4 part of aging resistant additive, 0.2-0.3 part of ultraviolet resistant absorbent, 0.3-0.4 part of defoaming agent, 0.3-0.4 part of flatting agent and 0.3-0.4 part of wetting dispersant;
further, the mixed solvent consists of xylene, butyl acetate and ethyl acetate, and the mass part ratio of the xylene to the ethyl acetate is as follows: butyl acetate: ethyl acetate 8-12: 2-5: 2-5.
Further, the functional filler is composed of 1200-mesh glass micro powder, 325-mesh hollow glass beads and 400-mesh hollow glass beads, and the functional filler comprises the following components in parts by mass: 1200-mesh glass micropowder: 325 mesh hollow glass beads: 5-7 of 400-mesh hollow glass beads: 17-19: 7-9.
Further, the pigment filler is composed of nano rutile titanium dioxide, fumed silica powder, sericite powder and high-temperature-resistant kaolin, and the pigment filler comprises the following components in parts by mass: nano rutile titanium dioxide: fumed silica powder: sericite powder: high-temperature resistant kaolin 10-12: 2-5: 3-5: 3-5.
Further, the salt spray resistant additive is 391 salt spray resistant additive, and the additive is prepared by mixing zinc oxide and zinc phosphate according to the weight ratio of 51: 49 is prepared by compounding.
Further, the anti-aging agent is a D anti-aging agent, the anti-ultraviolet absorbent is a UV9 anti-ultraviolet absorbent, the defoaming auxiliary agent is a BK066 auxiliary agent, the wetting dispersing auxiliary agent is a BK104S auxiliary agent, and the leveling auxiliary agent is a BK358N auxiliary agent.
The other technical scheme to be solved by the invention is as follows: the preparation method of the fluorosilicone type heat-insulating weather-resistant anticorrosive coating for the island engineering steel substrate comprises the following steps:
s101: selecting materials, namely selecting fluorocarbon resin, organic silicon resin, a mixed solvent, a functional filler, a pigment filler, a salt spray resistant auxiliary agent, an aging resistant auxiliary agent, an ultraviolet resistant absorbent, a defoaming agent, a flatting agent and a wetting dispersant according to the mass parts, and directly filling the curing agent by using an aliphatic acrylic polyurethane curing agent;
s102: pouring fluorocarbon resin and organic silicon resin into a mixed solution consisting of xylene, butyl acetate and ethyl acetate solvent, stirring at a high speed, and dispersing for about 2 hours to completely dissolve the fluorocarbon resin and the organic silicon resin;
s103: sequentially adding functional filler, pigment filler, salt spray resistant additive, aging resistant additive, ultraviolet resistant absorbent, defoaming agent, flatting agent, wetting dispersant and the like, stirring at a high speed for 1h, and grinding to the required fineness and viscosity by a sand mill;
s104: and (5) filling the fine powder in the step (S103).
Further, the stirring speed in step S102 and step S103 is 1200-1400 r/min.
Compared with the prior art, the invention has the beneficial effects that: according to the fluorosilicone type heat-insulating weather-resistant anticorrosive coating of the steel base material for island engineering and the preparation method thereof, on the basis of the traditional fluorocarbon top coating base material, an organic silicon resin base material is added, and the high temperature resistance of the fluorocarbon top coating is improved by utilizing the excellent high temperature resistance of the silicon resin; through compounding three functional heat-reflecting heat-insulating fillers of nano 1200-mesh glass micro powder, 325-mesh hollow glass micro beads and 400-mesh hollow glass micro beads, optimally designed micro powder and micro beads can fill gaps with each other due to different particle sizes to form a compact heat-insulating layer, so that the heat-reflecting heat-insulating effect of a coating system is effectively improved; the coating improves the service microenvironment of a coating system in the environment of three highs, improves the durability of the surface coating, and obviously prolongs the service life of the traditional fluorocarbon coating system. The preparation method is simple, the raw materials are easy to obtain, and the coating is convenient; the coating has excellent adhesion with a substrate; the coating has good self-cleaning property, salt mist resistance and weather resistance.
Drawings
FIG. 1 is a flow chart of a preparation method of the fluorine-silicon type heat-insulating weather-resistant anticorrosive coating for the steel substrate of the island engineering.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The fluorosilicone type heat-insulating weather-resistant anticorrosive coating for the island engineering steel substrate comprises a main agent and a curing agent, wherein the main agent and the curing agent are in a weight ratio of 10: 1, wherein:
the main agent comprises the following formula in parts by mass: fluorocarbon resin, organic silicon resin, dimethylbenzene, butyl acetate, ethyl acetate, 1200-mesh glass micro powder, 325-mesh hollow glass micro beads, 400-mesh hollow glass micro beads, nano rutile titanium dioxide, fumed silica powder, sericite powder, high-temperature-resistant kaolin, 391 salt spray-resistant auxiliary agent, D aging-resistant auxiliary agent, UV9 ultraviolet-resistant absorbent, BK066 defoaming agent, BK358N flatting agent and BK104S wetting dispersant, wherein the parts of the components are as follows: 40 parts of fluorocarbon resin, 10 parts of organic silicon resin, 10 parts of dimethylbenzene, 3 parts of butyl acetate, 3 parts of ethyl acetate, 6 parts of 1200-mesh glass micro powder, 16 parts of 325-mesh hollow glass micro beads, 7 parts of 400-mesh hollow glass micro beads, 10 parts of nano rutile titanium dioxide, 4 parts of fumed silica powder, 3 parts of sericite powder, 3 parts of high-temperature resistant kaolin, 0.3 part of 391 salt spray resistant auxiliary agent, 0.4 part of D aging resistant auxiliary agent, 0.3 part of UV9 ultraviolet resistant absorbent, 0.3 part of BK066 defoaming agent, 0.3 part of BK358N flatting agent and 0.3 part of BK104S wetting dispersant; the curing agent is N75 aliphatic acrylic polyurethane curing agent with the parts of 11.7. The curing agent is N75 aliphatic acrylic polyurethane curing agent with the parts of 11.7.
Based on the above-mentioned fluorosilicone type heat-insulating weather-resistant anticorrosive coating for the steel substrate of island and reef engineering, the embodiment provides a preparation method of the fluorosilicone type heat-insulating weather-resistant anticorrosive coating for the steel substrate of island and reef engineering, and the flow refers to fig. 1, and the preparation method comprises the following steps:
step 1: according to the parts of each component: 40 parts of fluorocarbon resin, 10 parts of organic silicon resin, 10 parts of dimethylbenzene, 3 parts of butyl acetate, 3 parts of ethyl acetate, 6 parts of 1200-mesh glass micro powder, 16 parts of 325-mesh hollow glass micro beads, 7 parts of 400-mesh hollow glass micro beads, 10 parts of nano rutile titanium dioxide, 4 parts of fumed silica powder, 3 parts of sericite powder, 3 parts of high-temperature resistant kaolin, 0.3 part of 391 salt spray resistant auxiliary agent, 0.4 part of D aging resistant auxiliary agent, 0.3 part of UV9 ultraviolet resistant absorbent, 0.3 part of BK066 defoaming agent, 0.3 part of BK358N flatting agent, 0.3 part of BK104S wetting dispersant and 11.7 parts of N75 aliphatic acrylic polyurethane curing agent;
step 2: pouring fluorocarbon resin and organic silicon resin into a mixed solution consisting of xylene, butyl acetate and ethyl acetate solvent, stirring at high speed and dispersing for about 2 hours, wherein the stirring speed is 1200-1400r/min, so that the fluorocarbon resin and the organic silicon resin are completely dissolved;
and step 3: functional fillers (1200-mesh glass micro powder, 325-mesh hollow glass micro beads and 400-mesh hollow glass micro beads), pigments and fillers (nano rutile titanium dioxide, fumed silica powder, sericite powder and high-temperature-resistant kaolin), salt spray resistant additives, aging resistant additives, ultraviolet-resistant absorbents, defoaming agents, flatting agents, wetting dispersants and the like are sequentially added, the mixture is stirred at a high speed for 1h, the stirring speed is 1200-1400r/min, and the mixture is ground to the required fineness and viscosity by a sand mill;
and 4, step 4: according to the main agent: curing agent 10: 1, and filling.
When in use, the two components are mixed and stirred uniformly, and cured for 5-15 minutes, preferably about 15 minutes, and then the mixture can be brushed, knife-coated, roller-coated or high-pressure airless sprayed.
The paint prepared by the formula can be matched with solvent type priming paint and intermediate paint such as epoxy, glass flake and the like which are commonly used at present, the interlayer adhesion can reach more than 10MPa, the flexibility is 1mm, the impact strength is 50cm & Kg, the solid content is 75%, and the specific gravity is 1.1 Kg/L. The coating film prepared by brushing the coating for 2 times (about 60-80 mu m) has excellent comprehensive protection performance, salt mist resistance of more than 5000 hours, damp and heat resistance of more than 3000 hours, aging resistance of more than 3000 hours, heat reflectivity of 0.82 and heat insulation temperature difference of 12.7 ℃.
Example 2
The fluorosilicone type heat-insulating weather-resistant anticorrosive coating for the island engineering steel substrate comprises a main agent and a curing agent, wherein the main agent and the curing agent are in a weight ratio of 10: 1, wherein:
the main agent comprises the following formula in parts by mass: fluorocarbon resin, organic silicon resin, dimethylbenzene, butyl acetate, ethyl acetate, 1200-mesh glass micro powder, 325-mesh hollow glass micro beads, 400-mesh hollow glass micro beads, nano rutile titanium dioxide, fumed silica powder, sericite powder, high-temperature-resistant kaolin, 391 salt spray-resistant auxiliary agent, D aging-resistant auxiliary agent, UV9 ultraviolet-resistant absorbent, BK066 defoaming agent, BK358N flatting agent and BK104S wetting dispersant, wherein the parts of the components are as follows: 40 parts of fluorocarbon resin, 10 parts of organic silicon resin, 10 parts of dimethylbenzene, 3 parts of butyl acetate, 3 parts of ethyl acetate, 2 parts of 1200-mesh glass micro powder, 17 parts of 325-mesh hollow glass micro beads, 8 parts of 400-mesh hollow glass micro beads, 8 parts of nano rutile titanium dioxide, 3 parts of fumed silica powder, 5 parts of sericite powder, 6 parts of high-temperature resistant kaolin, 0.3 part of 391 salt spray resistant auxiliary agent, 0.4 part of D aging resistant auxiliary agent, 0.3 part of UV9 ultraviolet resistant absorbent, 0.3 part of BK066 defoaming agent, 0.3 part of BK358N flatting agent and 0.3 part of BK104S wetting dispersant; the curing agent is N75 aliphatic acrylic polyurethane curing agent with the parts of 11.7.
Based on the above-mentioned fluorosilicone type heat-insulating weather-resistant anticorrosive coating for the steel substrate of island and reef engineering, the embodiment provides a preparation method of the fluorosilicone type heat-insulating weather-resistant anticorrosive coating for the steel substrate of island and reef engineering, and the flow refers to fig. 1, and the preparation method comprises the following steps:
step 1: according to the parts of each component: 40 parts of fluorocarbon resin, 10 parts of organic silicon resin, 10 parts of dimethylbenzene, 3 parts of butyl acetate, 3 parts of ethyl acetate, 2 parts of 1200-mesh glass micro powder, 17 parts of 325-mesh hollow glass micro beads, 8 parts of 400-mesh hollow glass micro beads, 8 parts of nano rutile titanium dioxide, 3 parts of fumed silica powder, 5 parts of sericite powder, 6 parts of high-temperature resistant kaolin, 0.3 part of 391 salt mist resistant auxiliary agent, 0.4 part of D aging resistant auxiliary agent, 0.3 part of UV9 ultraviolet resistant absorbent, 0.3 part of BK066 defoaming agent, 0.3 part of BK358N flatting agent, 0.3 part of BK104S wetting dispersant and 11.7 parts of N75 aliphatic acrylic polyurethane curing agent;
step 2: pouring fluorocarbon resin and organic silicon resin into a mixed solution consisting of xylene, butyl acetate and ethyl acetate solvent, stirring at high speed and dispersing for about 2 hours, wherein the stirring speed is 1200-1400r/min, so that the fluorocarbon resin and the organic silicon resin are completely dissolved;
and step 3: functional fillers (1200-mesh glass micro powder, 325-mesh hollow glass micro beads and 400-mesh hollow glass micro beads), pigments and fillers (nano rutile titanium dioxide, fumed silica powder, sericite powder and high-temperature-resistant kaolin), salt spray resistant additives, aging resistant additives, ultraviolet-resistant absorbents, defoaming agents, flatting agents, wetting dispersants and the like are sequentially added, the mixture is stirred at a high speed for 1h, the stirring speed is 1200-1400r/min, and the mixture is ground to the required fineness and viscosity by a sand mill;
and 4, step 4: according to the main agent: curing agent 10: 1, and filling.
When in use, the two components are mixed and stirred uniformly, and cured for 5-15 minutes, preferably about 15 minutes, and then the mixture can be brushed, knife-coated, roller-coated or high-pressure airless sprayed.
The paint prepared by the formula has the same performance and characteristics as those of the paint prepared by the embodiment 1, the cost is about 6 percent, but the heat reflection and heat insulation capability is slightly lower than that of the paint prepared by the embodiment 1, the paint is suitable for occasions with slightly low sunshine intensity, the solid content is 75 percent, the specific gravity is 1.16Kg/L, a coating film prepared by brushing 2 times (about 60-80 mu m) with the paint has excellent comprehensive protection performance, the salt fog resistance is more than 5000 hours, the damp and heat resistance is more than 3000 hours, the aging resistance is more than 3000 hours, the heat reflectivity is 0.78, and the heat insulation temperature difference is 12.4 ℃.
According to the fluorosilicone type heat-insulating weather-resistant anticorrosive coating of the steel base material for island engineering and the preparation method thereof, on the basis of the traditional fluorocarbon top coating base material, an organic silicon resin base material is added, and the high temperature resistance of the fluorocarbon top coating is improved by utilizing the excellent high temperature resistance of the silicon resin; through compounding three functional heat-reflecting heat-insulating fillers of nano 1200-mesh glass micro powder, 325-mesh hollow glass micro beads and 400-mesh hollow glass micro beads, optimally designed micro powder and micro beads can fill gaps with each other due to different particle sizes to form a compact heat-insulating layer, so that the heat-reflecting heat-insulating effect of a coating system is effectively improved; the coating improves the service microenvironment of a coating system in the environment of three highs, improves the durability of the surface coating, and obviously prolongs the service life of the traditional fluorocarbon coating system. The preparation method is simple, the raw materials are easy to obtain, and the coating is convenient; the coating has excellent adhesion with a substrate; the coating has good self-cleaning property, salt mist resistance and weather resistance.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.
Claims (8)
1. The fluorosilicone type heat-insulating weather-resistant anticorrosive coating of the island engineering steel substrate is characterized by comprising a main agent and a curing agent, wherein the main agent and the curing agent are 10 in parts: 1, wherein:
the main agent comprises the following formula in parts by mass: 36-40 parts of fluorocarbon resin, 8-10 parts of organic silicon resin, 13-16 parts of mixed solvent, 25-28 parts of functional filler, 16-20 parts of pigment filler, 0.2-0.3 part of salt spray resistant additive, 0.3-0.4 part of aging resistant additive, 0.2-0.3 part of ultraviolet resistant absorbent, 0.3-0.4 part of defoaming agent, 0.3-0.4 part of flatting agent and 0.3-0.4 part of wetting dispersant.
2. The island and reef engineering steel substrate fluorosilicone type heat-insulating weather-resistant anticorrosive coating as claimed in claim 1, wherein the mixed solvent comprises xylene, butyl acetate and ethyl acetate in parts by mass: butyl acetate: ethyl acetate 8-12: 2-5: 2-5.
3. The island and reef engineering steel substrate fluorosilicone type heat-insulating weather-resistant anticorrosive coating as claimed in claim 1, wherein the functional filler is composed of 1200-mesh glass micropowder, 325-mesh hollow glass microbeads and 400-mesh hollow glass microbeads, and the functional filler comprises the following components in parts by mass: 1200-mesh glass micropowder: 325 mesh hollow glass beads: 5-7 of 400-mesh hollow glass beads: 17-19: 7-9.
4. The island and reef engineering steel substrate fluorosilicone type heat-insulating weather-resistant anticorrosive paint of claim 1, wherein the pigment filler comprises nano rutile titanium dioxide, fumed silica powder, sericite powder and high temperature resistant kaolin, and the mass parts of the components are as follows: nano rutile titanium dioxide: fumed silica powder: sericite powder: high-temperature resistant kaolin 10-12: 2-5: 3-5: 3-5.
5. The steel substrate fluorosilicone type heat-insulating weather-resistant anticorrosive coating for island and reef engineering according to claim 1, wherein said salt spray resistant additive is 391 salt spray resistant additive comprising zinc oxide and zinc phosphate in a ratio of 51: 49 is prepared by compounding.
6. The fluorosilicone type heat-insulating weather-resistant anticorrosive coating for the island and reef engineering steel substrate according to claim 1, wherein the anti-aging agent is a D anti-aging agent, the anti-ultraviolet absorber is a UV9 anti-ultraviolet absorber, the defoaming aid is a BK066 aid, the wetting dispersion aid is a BK104S aid, and the leveling aid is a BK358N aid.
7. The preparation method of the fluorosilicone type heat-insulating weather-resistant anticorrosive coating for the steel substrate for island and reef engineering according to claims 1 to 6, which comprises the following steps:
s101: selecting materials, namely selecting fluorocarbon resin, organic silicon resin, a mixed solvent, a functional filler, a pigment filler, a salt spray resistant auxiliary agent, an aging resistant auxiliary agent, an ultraviolet resistant absorbent, a defoaming agent, a flatting agent and a wetting dispersant according to the mass parts, and directly filling the curing agent by using an aliphatic acrylic polyurethane curing agent;
s102: pouring fluorocarbon resin and organic silicon resin into a mixed solution consisting of xylene, butyl acetate and ethyl acetate solvent, stirring at a high speed, and dispersing for about 2 hours to completely dissolve the fluorocarbon resin and the organic silicon resin;
s103: sequentially adding functional filler, pigment filler, salt spray resistant additive, aging resistant additive, ultraviolet resistant absorbent, defoaming agent, flatting agent, wetting dispersant and the like, stirring at a high speed for 1h, and grinding to the required fineness and viscosity by a sand mill;
s104: and (5) filling the fine powder of the step (S103).
8. The method for preparing the fluorosilicone type heat-insulating weather-resistant anticorrosive coating with the steel substrate for island and reef engineering according to claim 7, wherein the stirring speed in steps S102 and S103 is 1200-1400 r/min.
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| CN113563781A (en) * | 2021-08-24 | 2021-10-29 | 东莞市巴德迩新材料有限公司 | Environment-friendly water-based paint and preparation process thereof |
| CN116023815A (en) * | 2023-02-02 | 2023-04-28 | 西安现代控制技术研究所 | Missile tri-proof paint for marine environment and preparation method and use method thereof |
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