CN110776799A - Water-based rail fastener hole sealing coating and preparation method thereof - Google Patents
Water-based rail fastener hole sealing coating and preparation method thereof Download PDFInfo
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- CN110776799A CN110776799A CN201911165070.1A CN201911165070A CN110776799A CN 110776799 A CN110776799 A CN 110776799A CN 201911165070 A CN201911165070 A CN 201911165070A CN 110776799 A CN110776799 A CN 110776799A
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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
- 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
- C09D133/04—Homopolymers or copolymers of esters
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/20—Diluents or solvents
-
- 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
-
- 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
- C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2265—Oxides; Hydroxides of metals of iron
- C08K2003/2272—Ferric oxide (Fe2O3)
Abstract
The invention discloses a water-based railway fastener hole sealing coating and a preparation method thereof, belonging to the technical field of coatings and comprising the following raw materials in percentage by weight: 40-50% of water-based acrylic resin emulsion, 20-25% of water, 10-20% of titanium dioxide, 8-15% of filler, 0.2-0.5% of graphene, 1-3% of ethylene glycol ether, 2-5% of dipropylene glycol butyl ether, 3-5% of amino resin, 0.5-1.5% of dispersant, 0.1-0.5% of defoaming agent, 0.1-0.5% of flatting agent, 0.1-0.5% of thickening agent and 0.1-0.3% of pH value regulator, wherein the total is 100%; the solvent used in the paint is mainly deionized water, and the paint does not contain benzene and ketone solvents, so that the environmental pollution and the harm to constructors are avoided, and the content of the volatile solvent is 5 percent and is far less than the limit value of 200g/L of the national environmental protection standard; by adopting proper components and proportion, the adhesion fastness, hardness and toughness of the coating can be improved; at present, the hardness of paint films of products of the same type is mostly less than or equal to 1H, and the hardness of the paint film can reach more than 2H; the salt spray resistant time of the invention is 1500 h; is far higher than the current products of the same type for 500 hours.
Description
Technical Field
The invention relates to the technical field of coatings, in particular to a water-based sealing coating for rail fasteners and a preparation method thereof.
Background
In recent years, rail transit is greatly developed in China, high-speed rails, subways and the like are greatly developed, and the railway anticorrosion requirement is met. The railway corrosion prevention not only concerns the economic loss caused by corrosion, but also influences the safety of railway transportation. The corrosion problem of rail transit mainly appears in rail, transmission of electricity cantilever, track fastener etc. along the railway, and there is not better method to the corrosion problem of rail at present, and transmission of electricity cantilever can adopt anticorrosive coating to carry out anticorrosive coating to improve service life. The rail fastener is generally not treated by adopting an anti-corrosion coating method due to the reasons of large dosage, small specification, easy corrosion and the like. At present, a conventional treatment mode for the rail fastener is a zinc impregnation mode, zinc is impregnated into the fastener to play a role in anode protection, and the mode has the advantages of good bonding strength, excellent protection effect and the like compared with a hot galvanizing mode and is widely used. The zinc impregnation mode is to adopt to open on the track fastener to empty the mode, adopts special technology infiltration fastener with zinc to play the effect of protection, but can appear the problem that the micropore can not totally seal after the technology is accomplished, just appears the corrosion problem under the external condition very soon.
At present, a solution is also provided at home and abroad aiming at the hole sealing problem of the zinc impregnation fastener, but the method generally has the following problems: poor effect, poor water resistance, poor weather resistance and poor salt spray resistance; the price is high, which is not beneficial to wide application; the construction is inconvenient and is not beneficial to popularization; is not environment-friendly, discharges a large amount of VOC and has potential safety hazard. For example, chinese patent application CN 109233497 a discloses a graphene water-based acrylic acid anticorrosive paint, which has relatively good acid and alkali resistance, but relatively poor salt spray resistance, and particularly for rail fasteners, because of its special use environment, has higher requirement on salt spray resistance, and has special requirements on water resistance, impact resistance, etc., and has relatively high requirement on flexibility of paint film, but these performances of the patent application are not good enough.
In order to solve the problems, a water-based paint specially for sealing holes of fasteners is urgently needed in the market so as to solve the problem of corrosion resistance of the existing fasteners.
Disclosure of Invention
One of the objectives of the present invention is to provide a water-based sealing coating for rail fasteners to solve the above problems.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows: the water-based sealing coating for the rail fastener is prepared from the following raw materials in percentage by weight:
40-50% of water-based acrylic resin emulsion, 20-25% of water, 10-20% of titanium dioxide, 8-15% of filler, 0.2-0.5% of graphene, 1-3% of ethylene glycol ether, 2-5% of dipropylene glycol butyl ether, 3-5% of amino resin, 0.5-1.5% of dispersant, 0.1-0.5% of defoaming agent, 0.1-0.5% of flatting agent, 0.1-0.5% of thickening agent and 0.1-0.3% of pH value regulator;
the total of the raw materials is 100 percent.
According to the invention, the water-based acrylic resin emulsion is used as a film forming substance, titanium dioxide and flaky mica iron oxide are used as pigments, and amino resin and graphene are used as auxiliary materials, so that the corrosion resistance of the coating is improved, and the toughness, water resistance and impact resistance of the coating are improved.
The coating is mainly suitable for sealing hole corrosion prevention and protection of parts such as rail fasteners and the like, and can also be used as corrosion prevention coating of other steel structures.
In a preferred embodiment, the waterborne acrylic resin is basf 938T.
As a preferred technical scheme, the filler is platy micaceous iron oxide.
Preferably, the amino resin is hexamethoxy methyl melamine resin. Further preferred is the cyanotetramine resin CYMEL 303LF, a highly methylated amino resin, which in combination with other components improves the hardness and toughness of the coating.
As a preferred technical scheme, the dispersant is an acrylic block polymer dispersant.
As a further preferred embodiment, the dispersant is PX 4575, basf corporation.
As a preferred solution, the defoamer is BYK024, bike corporation.
As a preferable technical scheme, the leveling agent is BYK-333, Bick company.
Preferably, the thickener is PU1191, BASF corporation.
The second purpose of the present invention is to provide a preparation method of the above water-based railway fastener hole sealing coating, which adopts a technical scheme that the preparation method comprises the following steps: dispersing and grinding titanium dioxide, filler and a dispersing agent into color paste, mixing water and a water-based acrylic resin emulsion, uniformly stirring, adding a pH regulator to adjust the pH value, adding amino resin, ethylene glycol ethyl ether and diethylene glycol butyl ether, uniformly stirring, sequentially adding the prepared color paste, a defoaming agent, a leveling agent and graphene, dispersing and stirring, testing and adjusting the pH value to 8-9, adding a thickening agent to adjust the viscosity KU value to 90-100, filtering and packaging to obtain the pigment.
The preparation method is simple and feasible.
The paint is prepared by adopting a dip-coating mode, adding 10-15% of deionized water as a diluent before coating, adjusting coating viscosity, putting a fastener into a dip-coating tank for 1 minute, taking out the fastener, throwing out excessive paint by using a centrifugal machine, naturally drying the fastener for 30 minutes, putting the fastener into a 110-DEG C oven, baking the fastener for 30 minutes, taking out the fastener, and cooling the fastener to room temperature.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that: the solvent used in the paint is mainly deionized water, and the paint does not contain benzene and ketone solvents, so that the environmental pollution and the harm to constructors are avoided, and the content of the volatile solvent is 5 percent and is far less than the limit value of 200g/L of the national environmental protection standard; by adopting proper components and proportion, the adhesion fastness, hardness and toughness of the coating can be improved; at present, the hardness of paint films of products of the same type is mostly less than or equal to 1H, and the hardness of the paint film can reach more than 2H; the salt spray resistant time of the invention is 1500 h; is far higher than the current products of the same type for 500 hours.
Detailed Description
The present invention will be further described with reference to the following examples.
Example 1:
a water-based railway fastener hole sealing coating is composed of the following raw materials in parts by weight;
46 parts of aqueous acrylic resin emulsion (938T, Basff company), 20.7 parts of deionized water, 15 parts of titanium dioxide, 8 parts of sheet mica iron oxide, 0.3 part of graphene, 2 parts of ethylene glycol ether, 3 parts of dipropylene glycol butyl ether, 3 parts of CYMEL 303LF amino resin, 1 part of dispersing agent (4575, Basff company), 0.2 part of defoaming agent (BYK024, Picker company), 0.3 part of flatting agent (BYK-333, Picker company), 0.3 part of thickening agent (PU1191, Pasff company) and 0.2 part of pH value regulator;
the preparation method comprises the following steps: dispersing and grinding titanium dioxide, flaky mica iron oxide and a dispersing agent into color paste, mixing deionized water and a water-based acrylic resin emulsion, uniformly stirring, adding a pH regulator to adjust the pH value, adding CYMEL 303LF amino resin, ethylene glycol ethyl ether and diethylene glycol butyl ether, uniformly stirring, adding the prepared color paste, a defoaming agent, a leveling agent and graphene in sequence, dispersing and stirring for 15min, testing and adjusting the pH value to 8-9, adding a thickening agent to adjust the viscosity KU value to 90-100, filtering and packaging to obtain the pigment;
the product A is prepared by the preparation method.
Example 2:
the water-based hole sealing paint for the rail fastener is prepared from the following raw materials in percentage by weight;
40 parts of water-based acrylic resin emulsion, 24 parts of deionized water, 15 parts of titanium dioxide, 10 parts of sheet mica iron oxide, 0.3 part of graphene, 2 parts of ethylene glycol ether, 3 parts of dipropylene glycol butyl ether, 3.7 parts of CYMEL 303LF amino resin, 1 part of dispersing agent (4575, Basff company), 0.2 part of defoaming agent (BYK024, Pick company), 0.3 part of flatting agent (BYK-333, Pick company), 0.3 part of thickening agent (PU1191, Pasff company) and 0.2 part of pH value regulator;
preparation method was the same as example 1, and product B was obtained "
Example 3:
the water-based hole sealing paint for the rail fastener is prepared from the following raw materials in percentage by weight;
44 parts of aqueous acrylic resin emulsion, 20 parts of deionized water, 15 parts of titanium dioxide, 10 parts of sheet mica iron oxide, 0.3 part of graphene, 2 parts of ethylene glycol ether, 3 parts of dipropylene glycol butyl ether, 3.7 parts of CYMEL 303LF amino resin, 1 part of dispersing agent (4575, Basff company), 0.2 part of defoaming agent (BYK024, Pick company), 0.3 part of flatting agent (BYK-333, Pick company), 0.3 part of thickening agent (PU1191, Pasff company) and 0.2 part of pH value regulator;
the procedure was the same as in example 1 to obtain "product C".
Comparative example 1
This comparative example is based on example 3 and is identical with example 1 except that no CYMEL 303LF amino resin is added, giving "comparative A".
Comparative example 2
This comparative example was based on example 3 and was the same as example 1 except that the flaky micaceous iron oxide was not added, to obtain "comparative B".
Comparative example 3
This comparative example is the coating of example 1 of chinese patent application CN 109233497 a, and is identified as "comparative C".
Examples of Performance test
The coatings of examples 1 to 3 and comparative examples 1 to 3 described above were subjected to the relevant performance tests in accordance with the relevant test standards, and the results are shown in Table 1
Table 1 table of performance test results
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 and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. The water-based hole sealing coating for the rail fastener is characterized by comprising the following raw materials in percentage by weight:
40-50% of water-based acrylic resin emulsion, 20-25% of water, 10-20% of titanium dioxide, 8-15% of filler, 0.2-0.5% of graphene, 1-3% of ethylene glycol ether, 2-5% of dipropylene glycol butyl ether, 3-5% of amino resin, 0.5-1.5% of dispersant, 0.1-0.5% of defoaming agent, 0.1-0.5% of flatting agent, 0.1-0.5% of thickening agent and 0.1-0.3% of pH value regulator;
the total of the raw materials is 100 percent.
2. The aqueous rail clip sealing coating of claim 1, wherein the filler is a platy micaceous iron oxide.
3. The aqueous railway rail fastener sealing coating as claimed in claim 1, wherein the amino resin is hexamethoxymethylmelamine resin.
4. The aqueous railway rail fastener sealing coating as claimed in claim 1, wherein the dispersant is an acrylic block polymer dispersant.
5. The aqueous rail fastener sealing coating of claim 4, wherein the dispersant is PX 4575.
6. The aqueous rail clip sealing coating of claim 1, wherein the defoamer is BYK 024.
7. The aqueous railway rail fastener sealing coating as claimed in claim 1, wherein the leveling agent is BYK-333.
8. The aqueous rail clip sealing coating of claim 1, wherein the thickener is PU 1191.
9. The method for preparing the aqueous sealing coating for rail fasteners according to claim 1, comprising the steps of: dispersing and grinding titanium dioxide, filler and a dispersing agent into color paste, mixing water and a water-based acrylic resin emulsion, uniformly stirring, adding a pH regulator to adjust the pH value, adding amino resin, ethylene glycol ethyl ether and diethylene glycol butyl ether, uniformly stirring, sequentially adding the prepared color paste, a defoaming agent, a leveling agent and graphene, dispersing and stirring, testing and adjusting the pH value to 8-9, adding a thickening agent to adjust the viscosity KU value to 90-100, filtering and packaging to obtain the pigment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911165070.1A CN110776799A (en) | 2019-11-25 | 2019-11-25 | Water-based rail fastener hole sealing coating and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911165070.1A CN110776799A (en) | 2019-11-25 | 2019-11-25 | Water-based rail fastener hole sealing coating and preparation method thereof |
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| Publication Number | Publication Date |
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| CN110776799A true CN110776799A (en) | 2020-02-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911165070.1A Pending CN110776799A (en) | 2019-11-25 | 2019-11-25 | Water-based rail fastener hole sealing coating and preparation method thereof |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106232737A (en) * | 2014-04-15 | 2016-12-14 | 威士伯采购公司 | Corrosion resistance coating composition |
| CN107163815A (en) * | 2017-06-08 | 2017-09-15 | 李滋方 | Anticorrosion, fireproof steel structure special coating and preparation method thereof |
| CN108559346A (en) * | 2018-04-20 | 2018-09-21 | 广州慧谷化学有限公司 | A kind of heat-conducting and corrosion-resistant coating and its preparation method and application |
| CN109880457A (en) * | 2019-01-21 | 2019-06-14 | 东莞市鹏威能源科技有限公司 | Aqueous environment-friendly size of a kind of use for electronic products graphene heat dissipation and preparation method thereof |
-
2019
- 2019-11-25 CN CN201911165070.1A patent/CN110776799A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106232737A (en) * | 2014-04-15 | 2016-12-14 | 威士伯采购公司 | Corrosion resistance coating composition |
| CN107163815A (en) * | 2017-06-08 | 2017-09-15 | 李滋方 | Anticorrosion, fireproof steel structure special coating and preparation method thereof |
| CN108559346A (en) * | 2018-04-20 | 2018-09-21 | 广州慧谷化学有限公司 | A kind of heat-conducting and corrosion-resistant coating and its preparation method and application |
| CN109880457A (en) * | 2019-01-21 | 2019-06-14 | 东莞市鹏威能源科技有限公司 | Aqueous environment-friendly size of a kind of use for electronic products graphene heat dissipation and preparation method thereof |
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Application publication date: 20200211 |