CN113308171A - Silver-titanium nano antibacterial basalt flake composite epoxy coating and preparation method thereof - Google Patents
Silver-titanium nano antibacterial basalt flake composite epoxy coating and preparation method thereof Download PDFInfo
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- 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
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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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- C09D7/61—Additives non-macromolecular inorganic
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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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Abstract
The invention provides a silver-titanium nano antibacterial basalt flake composite epoxy coating which is characterized by comprising the following components: and (2) component A: bisphenol a type epoxy resin with an epoxy functionality of 2, component B: an aliphatic glycidyl ether with an epoxy functionality of 3, component C: an aliphatic glycidyl ether with an epoxy functionality of 1, component D: the epoxy composite coating provided by the diamine compound with the amino end and the main chain molecular weight of 100-1000 polypropylene oxide/ethylene oxide, the dispersing agent, the defoaming agent, the leveling agent, the pigment, the filler, the rheological aid R1, the wear-resistant filler, the antibacterial functional material and the rheological aid R2 has a multiple three-dimensional cross-linking structure, so that the hardness and the toughness of the composition are improved, and the adhesion of strains to the coating and the red worm breeding are reduced.
Description
Technical Field
The invention belongs to the technical field of steel surface anticorrosive coatings and preparation methods thereof, and particularly relates to a silver-titanium nano antibacterial basalt flake composite epoxy coating and a preparation method thereof.
Background
Before steel pipelines are buried underground, certain pretreatment is usually required, and anticorrosion paint or a heat-sealing polyethylene layer and the like are coated. The coating is limited to the site environment and the cost of a construction site, and the coating of the anticorrosive coating meets the requirements of local conditions, can be used for recoating and repairing leakage on site, and has no requirement on the pipe diameter of the steel pipe. Although traditional anticorrosive coatings such as high chlorinated polyethylene, epoxy coal tar pitch and other systems can provide certain weather resistance and corrosion resistance, the requirements for long-acting property, non-toxicity, ultra-long service life and the like required by drinking water pipelines cannot be met.
At present, for the corrosion prevention of steel and iron pipelines of drinking water, solvent-free epoxy, polyurethane and polyurea coatings are widely applied to prevent corrosion. The epoxy thick coating is used as the inner wall for construction, and the polyurethane and polyurea are only applied to the outer wall for corrosion prevention due to the residual factors of the isocyanate curing agent. However, when the epoxy system is used as an inner wall anticorrosive coating, the existing commercial products are only constructed by matching common bisphenol A epoxy resin with curing agents such as conventional polyamide or polyether amine and the like, and are supplemented with soft fillers such as conventional titanium dioxide, kaolin and the like, so that certain solvent residues exist (the common coating is improved in production and construction by adding a volatile low-boiling diluent because the viscosity of the epoxy resin is high in winter, but the curing of the epoxy resin is not 100% reaction in a short time because the viscosity rises rapidly in the later period), and the epoxy resin is seriously abraded under the action of high-pressure water flow scouring, turbulent flow and the like; when soaked in static water, the green moss, bacteria and red worms are easy to breed, and the drinking water quality is affected.
In order to solve the problem of pain in the industry, the invention abandons the traditional active diluents such as AGE, BGE and other volatile and linear chain extension raw materials, adopts three-dimensional cross-linking chain extension raw materials, is assisted with novel silver-titanium nano materials for algae removal and sterilization, improves the erosion resistance and the abrasion resistance of the coating by the composite basalt scales, optimizes the types of epoxy resin components and curing agents, and improves the efficacy and the service life of the coating on the inner wall of the drinking water pipeline.
Disclosure of Invention
The invention aims to provide an antibacterial three-dimensional wear-resistant composite coating, which solves the problems that the existing coatings on the inner walls of drinking steel pipelines and the like have volatile organic compound residues, are easy to breed algae and bacteria, are seriously abraded and have short service life and the like.
The silver-titanium nano antibacterial basalt scale composite epoxy coating is characterized by comprising the following components: and (2) component A: 60-90 parts of bisphenol A epoxy resin with the epoxy functionality of 2,
and (B) component: 1-10 parts of aliphatic glycidyl ether with the epoxy functionality of 3,
and (3) component C: 1-10 parts of aliphatic glycidyl ether with the epoxy functionality of 1,
and (3) component D: diamine compound with end amino radical and main chain molecular weight of 100-1000 polypropylene oxide/ethylene oxide 15-30 weight portions,
the components A, B and C are used as the mixture ratio of the resin component and the curing agent D and are prepared according to the mixture ratio of 0.8-1.2 of the epoxy equivalent and the active hydrogen equivalent;
0.8-1 part of dispersing agent, 0.3-0.5 part of defoaming agent, 0.3-0.5 part of flatting agent, 15-20 parts of pigment, 10-25 parts of filler, 10.5-2 parts of rheological additive R, 2-5 parts of wear-resistant filler, 0.05-0.1 part of antibacterial functional material and 20.5-1 part of rheological additive R.
As a further improvement of the invention, the component A is commercially available liquid epoxy E51 resin, the component B is commercially available liquid glycerol triglycidyl ether, the component C is commercially available octyl glycidyl ether, the component D is a commercially available product D230 with the molecular weight of 230, the dispersant is Shanghai Tech auxiliary agent Tech-597, the leveling agent is fluorine-containing polyacrylate, the defoaming agent is Shanghai Tech-498, the pigment is rutile titanium dioxide, the filler is calcined kaolin and precipitated barium sulfate, the rheological auxiliary agent R1 is hydrophobic fumed silica, the wear-resistant filler is basalt scale with the fineness of 800-1250 meshes, the antibacterial functional material is nano silver titanium oxide, and the rheological auxiliary agent R2 is Shanghai Tech-9010.
As a further improvement of the invention, the leveling agent is an Shanghai Tech auxiliary agent Tech-1600, the pigment is a python R972, and the rheological auxiliary agent R1 is Yingchu 972.
A preparation method of a silver-titanium nano antibacterial basalt scale composite epoxy coating comprises the following steps:
step S1, placing the components A, B and C in a certain proportion into an open first tank, and stirring until the components A, B and C are dissolved;
step S2, adding a dispersing agent, a leveling agent and a defoaming agent into the first tank body, and stirring the mixture uniformly;
step S3, adding the pigment into the first tank body, and stirring the mixture evenly;
step S4, adding a filler and a rheological additive R1 into the first tank body, and stirring the mixture uniformly;
step S5, continuously stirring the composition in the first tank, and testing the fineness by a scraper until the fineness is lower than 20 micrometers;
step S6, adding wear-resistant filler into the first tank body, and stirring the mixture uniformly;
step S7, adding an antibacterial functional material into the first tank body, and stirring the materials uniformly;
step S8, taking out the composition in the first tank, sealing and storing;
step S9, taking the second tank, adding the component D and the rheological additive R2, and stirring uniformly;
and step S10, filtering the composition in the second tank, sealing and storing.
Has the advantages that:
the antibacterial wear-resistant composite coating provided by the invention is a solvent-free epoxy composite coating, and the composite coating is a nontoxic odorless wear-resistant coating of the novel silver titanium nano antibacterial basalt composite epoxy, which is formed by taking bisphenol A epoxy resin, polyfunctional glycidyl ether and viscosity-reducing monofunctional glycidyl ether as film-forming components, rutile titanium dioxide as a pigment, kaolin and precipitated barium sulfate as fillers, basalt scales as wear-resistant fillers and nano silver titanium materials as antibacterial components, and assisting in various production and coating construction functional dispersants Tech-597, a leveling agent Tech-1600, a defoaming agent Tech-498, hydrophobic fumed silica 972 and rheological Tech-9010 and a polyether amine curing agent D230.
The epoxy composite coating provided by the invention has a multiple three-dimensional cross-linked structure, the hardness and toughness of the composition are improved, the basalt scales assist in improving the water flow scouring resistance of the coating, inhibit scouring and permeation of sand and the like in water to the coating, improve the impurity shielding property of the coating to water flow, and the added novel nano silver-titanium material can better realize bacteriostasis and reduce adhesion of strains to the coating and red worm breeding.
Drawings
FIG. 1 is a diagram of the structure of a coating film-forming material of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to fig. 1 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 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
In the attached figure 1, m and n are integers which are all more than or equal to 0.
The invention provides a preparation method of a silver-titanium nano antibacterial basalt flake composite epoxy coating, which comprises the following components:
and (2) component A: is a bisphenol a type epoxy resin with an epoxy functionality of 2, preferably a liquid type resin, such as a commercially available epoxy E51 resin;
and (B) component: aliphatic glycidyl ethers with an epoxy functionality of 3, preferably of the liquid type, such as the commercially available glycerol triglycidyl ether;
and (3) component C: aliphatic glycidyl ether with epoxy functionality of 1, preferably a branched-chain liquid product with higher boiling point and stronger dilution effect on bisphenol A type resin, such as commercially available octyl glycidyl ether;
and (3) component D: the diamine compound with the end of amine group and the main chain of propylene oxide/ethylene oxide with different molecular weights is preferably diamine compound with the molecular weight of 100-1000, and the product D230 with the molecular weight of 230 is more preferably sold for the convenience of construction mixing and coating.
The proportion of the components A, B and C meets the requirements of thick coating and keeping toughness and hardness according to the requirements of the epoxy composition, and preferably A: b: c = 60-90: 1-10: 1-10, more preferably a: b: c = 80-90: 2-5: 2-5;
the components A, B and C are used as resin components, and the proportion of the components A, B and C to the component D (curing agent) is 0.8-1.2 according to the proportion of epoxy equivalent to active hydrogen equivalent, and the preferred proportion is 1 for curing.
The invention also provides a preparation method of the antibacterial three-dimensional wear-resistant composite coating prepared from the epoxy composition, and solves the problems that the existing coatings on the inner walls of drinking steel pipelines and the like have volatile organic compound residues, are easy to breed algae and bacteria, are seriously abraded and have short service life and the like. The method comprises the following steps:
step S1, placing the components A, B and C in a certain proportion into an open first tank, and stirring until the components A, B and C are dissolved; step S2, adding a dispersing agent, a leveling agent and a defoaming agent into the tank body, and stirring the mixture uniformly; step S3, adding the pigment into the first tank body, and stirring the mixture evenly; step S4, adding a filler and a rheological additive R1 into the first tank body, and stirring the mixture uniformly; step S5, continuously stirring the composition in the first tank, and testing the fineness by a scraper until the fineness is lower than 20 micrometers; step S6, adding wear-resistant filler into the first tank body, and stirring the mixture uniformly; step S7, adding an antibacterial functional material into the first tank body, and stirring the materials uniformly; step S8, taking out the composition in the first tank, sealing and storing; step S9, taking the second tank, adding a curing agent and a rheological additive R2, and stirring uniformly; and step S10, filtering the composition in the second tank, sealing and storing.
Preferably, the dispersing agent is a product with better dispersibility for specified pigments, such as phosphate type titanium dioxide, Shanghai tag auxiliary agent Tech-597, and the using amount is 0.8-1 part;
preferably, the leveling agent is fluorine-containing polyacrylate with good thick coating flatness and small influence on recoatability and adhesive force, such as Shanghai Tiger auxiliary agent Tech-1600, and the dosage is 0.3-0.5 part of the formula amount;
preferably, the defoaming agent is a product which has high viscosity and is coated with good defoaming effect, such as Shanghai Tiger auxiliary agent Tech-498, and the dosage is 0.3-0.5 part of the formula amount;
preferably, the inner wall of the drinking water is white pigment, rutile type titanium dioxide such as python R972, and the amount is 15-20 parts of formula amount;
preferably, fillers are used to improve the paintability and storage stability of the coating, such as calcined kaolin and precipitated barium sulfate, in amounts of 10-25 parts of the formula amount;
preferably, the rheological additive R1 needs to meet the requirements of better anti-settling property on pigments and fillers, better inhibits thick coating sagging at the same time, and has small influence on the spraying fluency, such as hydrophobic fumed silica, Yingchuang 972, the dosage is 0.5-2 parts of the formula;
preferably, the wear-resistant filler is used for reducing the plasticity of the epoxy cured material and reducing the longitudinal erosion of water flow to the composition, such as basalt scales with the fineness of 800-1250 meshes, and the dosage is 2-5 parts of the formula amount;
preferably, the antibacterial functional material meets the chemical stability in the composition, and simultaneously provides better antibacterial and insecticidal effects for the composition, and is nontoxic to human and livestock, such as nano silver-titanium oxide, and the dosage of the antibacterial functional material is 0.05-0.1 part of the formula amount;
preferably, the rheological aid R2 satisfies the requirement of better compatibility with the curing agent, can provide good dispersibility with the resin composition, and can assist in providing good thick coating flow prevention of the curing component, such as polyurea, Shanghai Tiger aid Tech-9010, and the dosage is 0.5-1% of the mass of the curing agent.
Example 2
A preparation method of a silver-titanium nano antibacterial basalt flake composite epoxy coating comprises the following steps of S1, weighing 80 parts by mass of bisphenol A type epoxy resin E51, 3 parts by mass of glycerol triglycidyl ether and 7 parts by mass of octyl glycidyl ether, placing the weighed materials in an open first tank, and stirring at a high speed until the materials are dissolved;
step S2, adding 0.8 mass part of Tech-597 mass part, 0.3 mass part of Tech-498 mass part and 0.4 mass part of Tech-1600 mass part into the first tank body, and stirring uniformly;
step S3, adding rutile type titanium dioxide R972 parts by mass 18 into a first tank, and stirring uniformly;
step S4, adding 10 parts by mass of precipitated barium sulfate, 5 parts by mass of calcined kaolin and 0.5 part by mass of Yingchuang 972 hydrophobic gas silicon into the first tank body, and stirring the mixture uniformly;
step S5, continuously stirring the composition in the first tank, and testing the fineness by a scraper until the fineness is lower than 20 micrometers;
step S6, adding 5 parts by mass of basalt flakes of 800-1250 meshes into the first tank body, and stirring the basalt flakes uniformly;
step S7, adding 0.05 part by mass of nano silver-titanium antibacterial functional material into the first tank body, and stirring uniformly;
step S8, taking out the composition in the first tank, sealing and storing;
step S9, taking the second tank, adding 20 parts by mass of polyetheramine D230 and 0.5 part by mass of rheological aid Tech-9010, and stirring uniformly;
and step S10, filtering the composition in the second tank, sealing and storing.
The composition of the first tank body and the second tank body is weighed according to equal proportion and then evenly mixed, the composition is respectively coated on a carbon steel plate by using a 600 micron wire rod and a 1000 micron wire rod, the carbon steel plate is placed in a clean ventilation environment for 7 days, and then a basic performance test is carried out.
The test results are given in the following table:
example 3
A preparation method of a silver-titanium nano antibacterial basalt flake composite epoxy coating comprises the following steps of S1, weighing 60 parts by mass of bisphenol A type epoxy resin E51, 8 parts by mass of glycerol triglycidyl ether and 6 parts by mass of octyl glycidyl ether, placing the weighed materials in an open first tank, and stirring at a high speed until the materials are dissolved;
step S2, adding 1 Tech-597 parts by mass, 0.5 Tech-498 parts by mass and 0.5 Tech-1600 parts by mass into the first tank body, and stirring uniformly;
step S3, adding 16 parts by mass of rutile titanium dioxide R972 into a first tank, and stirring uniformly;
step S4, adding 8 parts by mass of precipitated barium sulfate, 12 parts by mass of calcined kaolin and 0.8 part by mass of Yingchuang 972 hydrophobic gas silicon into the first tank body, and stirring the mixture uniformly;
step S5, continuously stirring the composition in the first tank, and testing the fineness by a scraper until the fineness is lower than 20 micrometers;
step S6, adding 8 parts by mass of basalt scales with 800-1250 meshes into the first tank body, and stirring the basalt scales uniformly;
step S7, adding 0.08 part by mass of nano silver-titanium antibacterial functional material into the first tank body, and stirring uniformly;
step S8, taking out the composition in the first tank, sealing and storing;
step S9, taking a second tank, adding 30 parts by mass of polyetheramine D230 and 1 part by mass of rheological aid Tech-9010, and stirring uniformly;
and step S10, filtering the composition in the second tank, sealing and storing.
The composition of the first tank body and the second tank body is weighed according to equal proportion and then evenly mixed, the composition is respectively coated on a carbon steel plate by using a 600 micron wire rod and a 1000 micron wire rod, the carbon steel plate is placed in a clean ventilation environment for 7 days, and then a basic performance test is carried out.
The test results are given in the following table:
the points to be finally explained are: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed;
secondly, the method comprises the following steps: in the drawings of the disclosed embodiments of the invention, only the structures related to the disclosed embodiments are referred to, other structures can refer to common designs, and the same embodiment and different embodiments of the invention can be combined with each other without conflict;
and finally: the above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that are within the spirit and principle of the present invention are intended to be included in the scope of the present invention.
Claims (4)
1. The silver-titanium nano antibacterial basalt scale composite epoxy coating is characterized by comprising the following components: and (2) component A: 60-90 parts of bisphenol A epoxy resin with the epoxy functionality of 2,
and (B) component: 1-10 parts of aliphatic glycidyl ether with the epoxy functionality of 3,
and (3) component C: 1-10 parts of aliphatic glycidyl ether with the epoxy functionality of 1,
and (3) component D: diamine compound with end amino radical and main chain molecular weight of 100-1000 polypropylene oxide/ethylene oxide 15-30 weight portions,
the components A, B and C are used as the mixture ratio of the resin component and the curing agent D and are prepared according to the mixture ratio of 0.8-1.2 of the epoxy equivalent and the active hydrogen equivalent;
0.8-1 part of dispersing agent, 0.3-0.5 part of defoaming agent, 0.3-0.5 part of flatting agent, 15-20 parts of pigment, 10-25 parts of filler, 10.5-2 parts of rheological additive R, 2-5 parts of wear-resistant filler, 0.05-0.1 part of antibacterial functional material and 20.5-1 part of rheological additive R.
2. The silver-titanium nano antibacterial basalt scale composite epoxy coating as claimed in claim 1, wherein the component A is commercially available liquid epoxy E51 resin, the component B is commercially available liquid glycerol triglycidyl ether, the component C is commercially available octyl glycidyl ether, the component D is a commercially available product D230 with the molecular weight of 230, the dispersing agent is Shanghai Tech auxiliary agent Tech-597, the leveling agent is fluorine-containing polyacrylate, the defoaming agent is Shanghai Tech-498, the pigment is rutile titanium dioxide, the filler is calcined kaolin and precipitated barium sulfate, the rheological auxiliary agent R1 is hydrophobic gas phase silica, the wear-resistant filler is a basalt scale with the fineness of 800-1250 meshes, the antibacterial functional material is nano silver-titanium oxide, and the rheological auxiliary agent R2 is Shanghai Tech auxiliary agent Tech-9010.
3. The silver titanium nano antibacterial basalt scale composite epoxy coating according to claim 2, wherein the leveling agent is Shanghai Tech assistant Tech-1600, the pigment is python R972, and the rheological assistant R1 is Yingchu 972.
4. A preparation method of a silver-titanium nano antibacterial basalt scale composite epoxy coating comprises the following steps:
step S1, placing the components A, B and C in a certain proportion into an open first tank, and stirring until the components A, B and C are dissolved;
step S2, adding a dispersing agent, a leveling agent and a defoaming agent into the first tank body, and stirring the mixture uniformly;
step S3, adding the pigment into the first tank body, and stirring the mixture evenly;
step S4, adding a filler and a rheological additive R1 into the first tank body, and stirring the mixture uniformly;
step S5, continuously stirring the composition in the first tank, and testing the fineness by a scraper until the fineness is lower than 20 micrometers;
step S6, adding wear-resistant filler into the first tank body, and stirring the mixture uniformly;
step S7, adding an antibacterial functional material into the first tank body, and stirring the materials uniformly;
step S8, taking out the composition in the first tank, sealing and storing;
step S9, taking the second tank, adding the component D and the rheological additive R2, and stirring uniformly;
and step S10, filtering the composition in the second tank, sealing and storing.
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| CN114958132A (en) * | 2022-07-01 | 2022-08-30 | 漳州市和兴涂料有限公司 | Plastic coating for bathroom accessories and production process and application thereof |
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