CN113683947A - High-wear-resistance weather-resistant corrosion-resistant coating for locomotive, and preparation method and application thereof - Google Patents
High-wear-resistance weather-resistant corrosion-resistant coating for locomotive, and preparation method and application thereof Download PDFInfo
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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
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/02—Polyureas
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G73/00—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G83/00—Macromolecular compounds not provided for in groups C08G2/00 - C08G81/00
- C08G83/002—Dendritic macromolecules
- C08G83/005—Hyperbranched macromolecules
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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
- 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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- 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
- C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
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- 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
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
Abstract
The invention provides a high-wear-resistance weather-proof corrosion-resistant coating for a locomotive, a preparation method and application thereof. The high-wear-resistance weather-resistant corrosion-resistant coating for the locomotive comprises a component A and a component B, wherein the component A comprises the following components in parts by weight: 20-40 parts of hyperbranched modified aspartic acid resin, 5-10 parts of polyurethane acrylate, 20-30 parts of polyacrylate, 0.1-1.5 parts of leveling agent and 0.1-1 part of defoaming agent, wherein the component B comprises: 50-80 parts of isocyanate, 10-30 parts of active nano silicon oxide with a core-shell structure and 0.5-1.5 parts of light stabilizer. The preparation method comprises the following steps: (1) weighing and mixing the materials uniformly according to the parts by weight to obtain a component A and a component B; (2) mixing the component A and the component B according to a volume ratio of 1: 1, respectively filling the containers into respective containers, and sealing and storing the containers. The high wear-resistant weather-resistant corrosion-resistant coating for the locomotive can be used for the primer, the intermediate coat and the finish coat of the locomotive. The product of the invention reduces the abrasion to equipment and also ensures the final protective performance of the coating.
Description
Technical Field
The invention relates to the field of locomotive paint, in particular to a high-wear-resistance weather-resistant corrosion-resistant coating for a locomotive, a preparation method and application thereof.
Background
In recent years, automobiles have become an important part of people's lives. The paint for protecting automobile mainly protects the surface of automobile body and prevents the automobile body from being corroded by rain water to prolong the service life of the automobile.
The function of the automobile coating is as follows: (1) beautifying the appearance of the vehicle: the paint film is required to be plump and has good metal feeling; (2 construction is facilitated: automobile paints are generally multilayer coatings, and because good performance is generally not achieved by single-layer coating, therefore, the coating has good adhesion and no defect, and (3) excellent mechanical properties: the paint film is suitable for high speed, multiple shocks and strains of automobiles, and is required to have good adhesion, hardness, flexibility, impact resistance, bending resistance, scratch resistance, friction resistance and other excellent performances; (4) excellent scrub resistance, stain resistance and good repairability, (5) excellent weather resistance and corrosion resistance, being suitable for various temperatures, solarization and weather erosion, the paint film can not lose gloss, discolor, bubble, crack, fall, powder and corrode under various climatic conditions, the service life of the paint film is generally longer than 10 years, but the automobile body is made of metal materials, and the metal material is difficult to firmly adhere to the coating, so that the protective effect of the coating on the metal is greatly reduced.
Disclosure of Invention
In view of the above problems, the invention provides a high wear-resistant weather-resistant corrosion-resistant coating for locomotives, a preparation method and an application thereof, the invention provides a core-shell structure obtained by carrying out specific hyperbranched modification and surface modification on aspartic acid resin, so that not only can main resin, inorganic filler and the like in the material have more reactive sites, but also the reactivity is milder, the main resin, the inorganic filler and the like participate in curing reaction more evenly or uniformly, smaller curing stress can be generated, the binding power with metal is stronger, and the temperature resistance, wear resistance, corrosion resistance and weather resistance of the coating are greatly improved by the existence of silicon in a molecular block and the nano silicon oxide of the core-shell structure.
Based on the above, in a first aspect, the invention provides a high wear-resistant weather-resistant corrosion-resistant coating for locomotives, which comprises a component A and a component B, wherein the component A comprises the following components in parts by weight:
the component B comprises:
isocyanate 50-80
10-30 parts of active nano silicon oxide with core-shell structure
Light stabilizer 0.5-1.5
Optionally, the isocyanate is one or a combination of more of toluene diisocyanate, diphenylmethane diisocyanate, isophorone diisocyanate, 4' -dicyclohexylmethane diisocyanate, hexamethylene diisocyanate, and HDI trimer.
Optionally, the preparation method of the core-shell structured active nano silicon oxide includes the following steps: (1) putting 100 parts of nano silicon oxide into absolute ethyl alcohol according to the parts by weight, carrying out ball milling, filtering, and continuously carrying out ball milling on the nano silicon oxide for controlling the temperature at 110-; (2) continuously adding 10 parts of isocyanate into the pretreated nano silicon oxide, continuously ball-milling, controlling the temperature to be 100-.
Optionally, the preparation method of the hyperbranched modified aspartic acid resin comprises the following steps: (1) adding a trichlorosilane ethanol solution with the mass concentration of 10-30% into a reaction kettle protected by inert gas, dropwise adding deionized water under the stirring state, wherein the molar ratio of the deionized water to the trichlorosilane is 1:3, reacting for 0.5-1 hour at the temperature of 75-85 ℃, adding diisocyanate, and continuously reacting for 0.5-1 hour to obtain a pre-reaction solution; (2) controlling the temperature of the reaction kettle within the range of 15-20 ℃ by water cooling, and dropwise adding aliphatic primary diamine terminated end into the pre-reaction liquid under a stirring state to obtain silicon block branched modified organic diamine reaction liquid; (3) and slowly dropwise adding dialkyl maleate into the silicon block branched modified organic diamine reaction liquid by using a titration funnel, after dropwise adding, heating to 90-100 ℃, reacting at a constant temperature for 10-15h, and then removing and recovering the solvent to finally obtain the hyperbranched modified aspartic acid resin.
Optionally, the reaction degree of the hyperbranched modified aspartic acid resin is determined by a mercaptan-iodine titration analysis method.
Optionally, the diisocyanate is one or a combination of hexamethylene diisocyanate, isophorone diisocyanate, toluene diisocyanate and xylylene diisocyanate; the aliphatic primary diamine is one or a combination of hexamethylene diamine, butanediamine, hexamethylene diamine, 2, 4-trimethyl-1, 6-butanediamine, 4' -diaminodicyclohexyl methane and 3, 3-dimethyl-4, 4-diaminodicyclohexyl methane; the dialkyl maleate is one or more of dimethyl maleate, diethyl maleate, diisobutyl maleate, dibutyl maleate, dimethyl fumarate, diethyl fumarate, dipropyl fumarate and dibutyl fumarate;
in a second aspect, the invention provides a preparation method of a high wear-resistant weather-resistant corrosion-resistant coating for a locomotive, which comprises the following steps: (1) weighing and mixing the materials uniformly according to the parts by weight to obtain a component A and a component B; (2) mixing the component A and the component B according to a volume ratio of 1: 1, respectively filling the containers into respective containers, and sealing and storing the containers.
In a third aspect, the invention provides a method for using a high-wear-resistance weather-resistant corrosion-resistant coating for a locomotive, which comprises the following steps: (1) the component A and the component B are filled into a glue mixer according to the volume ratio, are uniformly mixed and are coated on a base material of a locomotive to form an uncured paint film; (2) and curing the paint film to completely cure and crosslink the paint film.
Optionally, the coating is spray coating.
In a fourth aspect, the high wear-resistant, weather-resistant and corrosion-resistant coating for locomotives of the present invention can be used for the primer, the middle paint and the top paint of locomotives.
The invention has the following beneficial effects:
1. the invention generates trihydroxy silane (SiH (OH) by the hydrolysis of trichlorosilane in ethanol solution3)，SiH(OH)3Reaction with diisocyanate (OCN-R-NCO) to form SiH (O-CONH-R-NCO)3Then and then withAliphatic primary diamine reacts to generate SiH (O-CONH-R-NHCO-NH-R' -NH)2)3And finally the primary amino group (-NH) therein2) And carrying out Michael addition reaction with the double bond of dialkyl maleate to obtain the hyperbranched modified aspartic acid resin containing a plurality of secondary amino groups (-NH-). The hyperbranched modified aspartic acid resin has more mild reactive sites, is more balanced in participating in curing reaction, is uniform in curing reaction, generates smaller curing stress and has stronger binding power. In addition, the existence of silicon in a molecular midblock greatly improves the temperature resistance, the wear resistance, the corrosion resistance and the weather resistance of the coating.
2. According to the application requirement of the locomotive coating, the nano silicon oxide is subjected to surface modification, so that the nano silicon oxide has resin with similar properties to the main resin and double bond groups capable of reacting, can have relatively balanced reaction activity with the main material, can better participate in curing reaction, and finally enables various performance indexes of the coating to be more excellent.
3. The product of the invention is a bi-component, wherein the volume ratio of A, B components is 1: 1, the operation of the spraying equipment is more stable, the spraying proportion of the coating is more stable, the abrasion to the equipment is reduced, and the final protective performance of the coating is also ensured.
Detailed Description
The present invention will be described in detail with reference to the following embodiments in order to make the aforementioned objects, features and advantages of the invention more comprehensible.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described and will be readily apparent to those of ordinary skill in the art without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
The high-wear-resistance weather-resistant corrosion-resistant coating for the locomotive comprises a component A and a component B, wherein the component A comprises the following components in parts by weight:
the component B comprises:
isocyanate 50-80
10-30 parts of active nano silicon oxide with core-shell structure
Light stabilizer 0.5-1.5
In one embodiment according to the present invention, the isocyanate is one or a combination of more of toluene diisocyanate, diphenylmethane diisocyanate, isophorone diisocyanate, 4' -dicyclohexylmethane diisocyanate, hexamethylene diisocyanate, and HDI trimer.
In an embodiment of the present invention, a method for preparing the core-shell structured active nano silicon oxide includes the following steps: (1) putting 100 parts of nano silicon oxide into absolute ethyl alcohol according to the parts by weight, carrying out ball milling, filtering, and continuously carrying out ball milling on the nano silicon oxide for controlling the temperature at 110-; (2) continuously adding 10 parts of isocyanate into the pretreated nano silicon oxide, continuously ball-milling, controlling the temperature to be 100-.
In an embodiment of the present invention, the preparation method of the hyperbranched modified aspartic acid resin comprises the following steps: (1) adding a trichlorosilane ethanol solution with the mass concentration of 10-30% into a reaction kettle protected by inert gas, dropwise adding deionized water under the stirring state, wherein the molar ratio of the deionized water to the trichlorosilane is 1:3, reacting for 0.5-1 hour at the temperature of 75-85 ℃, adding diisocyanate, and continuously reacting for 0.5-1 hour to obtain a pre-reaction solution; (2) controlling the temperature of the reaction kettle within the range of 15-20 ℃ by water cooling, and dropwise adding aliphatic primary diamine terminated end into the pre-reaction liquid under a stirring state to obtain silicon block branched modified organic diamine reaction liquid; (3) and slowly dropwise adding dialkyl maleate into the silicon block branched modified organic diamine reaction liquid by using a titration funnel, after dropwise adding, heating to 90-100 ℃, reacting at a constant temperature for 10-15h, and then removing and recovering the solvent to finally obtain the hyperbranched modified aspartic acid resin.
In one embodiment of the present invention, the degree of reaction of the hyperbranched modified aspartic acid resin is determined by thiol-iodine titration analysis.
In an embodiment according to the present invention, the diisocyanate is one or a combination of hexamethylene diisocyanate, isophorone diisocyanate, toluene diisocyanate, and xylylene diisocyanate; the aliphatic primary diamine is one or a combination of hexamethylene diamine, butanediamine, hexamethylene diamine, 2, 4-trimethyl-1, 6-butanediamine, 4' -diaminodicyclohexyl methane and 3, 3-dimethyl-4, 4-diaminodicyclohexyl methane; the dialkyl maleate is one or more of dimethyl maleate, diethyl maleate, diisobutyl maleate, dibutyl maleate, dimethyl fumarate, diethyl fumarate, dipropyl fumarate and dibutyl fumarate;
the preparation method of the high-wear-resistance weather-resistance corrosion-resistance coating for the locomotive comprises the following steps: (1) weighing and mixing the materials uniformly according to the parts by weight to obtain a component A and a component B; (2) mixing the component A and the component B according to a volume ratio of 1: 1, respectively filling the containers into respective containers, and sealing and storing the containers.
The use method of the high-wear-resistance weather-resistance corrosion-resistance coating for the locomotive comprises the following steps: (1) the component A and the component B are filled into a glue mixer according to the volume ratio, are uniformly mixed and are coated on a base material of a locomotive to form an uncured paint film; (2) and curing the paint film to completely cure and crosslink the paint film.
In an embodiment according to the invention, the coating is a spray coating.
The high wear-resistant weather-resistant corrosion-resistant coating for the locomotive can be used for the primer, the intermediate coat and the finish coat of the locomotive.
Next, the preparation method of the present invention will be explained, and the preparation method of the present invention specifically includes the steps of:
preparing hyperbranched modified aspartic acid resin:
(1) adding a trichlorosilane ethanol solution with the mass concentration of 10-30% into a reaction kettle protected by inert gas, dropwise adding deionized water under the stirring state, wherein the molar ratio of the deionized water to the trichlorosilane is 1:3, reacting for 0.5-1 hour at the temperature of 75-85 ℃, adding diisocyanate, and continuously reacting for 0.5-1 hour to obtain a pre-reaction solution; (2) controlling the temperature of the reaction kettle within the range of 15-20 ℃ by water cooling, and dropwise adding aliphatic primary diamine terminated end into the pre-reaction liquid under a stirring state to obtain silicon block branched modified organic diamine reaction liquid; (3) and (2) slowly dropwise adding dialkyl maleate into the silicon block branched modified organic diamine reaction liquid by using a titration funnel, after dropwise adding, heating to 90-100 ℃, reacting for 10-15h at constant temperature, then removing and recovering the solvent, and determining the reaction degree by using a mercaptan-iodine titration analysis method to finally obtain the hyperbranched modified aspartic acid resin.
(II) preparing active nano silicon oxide with a core-shell structure:
(1) putting 100 parts of nano silicon oxide into absolute ethyl alcohol according to the parts by weight, carrying out ball milling, filtering, and continuously carrying out ball milling on the nano silicon oxide for controlling the temperature at 110-; (2) continuously adding 10 parts of isocyanate into the pretreated nano silicon oxide, continuously ball-milling, controlling the temperature to be 100-.
(III) preparing a coating:
(1) weighing and mixing hyperbranched modified aspartic acid resin, polyurethane acrylate, polyacrylate, a flatting agent and a defoaming agent according to the parts by weight to obtain a mixed material; uniformly mixing the mixed materials in a high-speed stirrer at normal temperature to obtain a component A; the component A comprises the following components: 20-40 parts of hyperbranched modified aspartic acid resin, 5-10 parts of polyurethane acrylate, 20-30 parts of polyacrylate, 0.1-1.5 parts of flatting agent and 0.1-1 part of defoaming agent;
(2) weighing isocyanate, diisocyanate prepolymer, defoaming agent and flatting agent according to the weight ratio, mixing and ball-milling uniformly at normal temperature to obtain a component B; the component B comprises the following components: 50-80 parts of isocyanate, 10-30 parts of active nano silicon oxide with a core-shell structure and 0.5-1.5 parts of light stabilizer.
The following embodiments are provided to describe the high wear-resistant weather-resistant corrosion-resistant coating for locomotives, the preparation method and the application thereof.
The main raw materials and equipment used are as follows: unless otherwise specified, the raw materials and equipment of each example and comparative example were the same; materials, not designated as a specific model or category, originate from the same model purchased in the market, for example: the leveling agent is BYK361, the light stabilizer is 292, and the defoaming agent is amino modified polydimethylsiloxane.
Example 1
Preparing hyperbranched modified aspartic acid resin:
(1) adding a trichlorosilane ethanol solution with the mass concentration of 10% into a nitrogen-protected reaction kettle, dropwise adding deionized water under the stirring state, wherein the molar ratio of the deionized water to the trichlorosilane is 1:3, reacting at the temperature of 75 ℃ for 0.5 hour, adding diisocyanate, and continuously reacting for 0.5 hour to obtain a pre-reaction solution; (2) controlling the temperature of the reaction kettle within 15 ℃ by water cooling, and dropwise adding aliphatic primary diamine terminated end into the pre-reaction liquid under a stirring state to obtain silicon block branched modified organic diamine reaction liquid; (3) and (2) slowly dropwise adding dialkyl maleate into the silicon block branched modified organic diamine reaction solution by using a titration funnel, after dropwise adding, heating to 90 ℃ for constant-temperature reaction for 10 hours, then removing and recovering the solvent, and determining the reaction degree by using a mercaptan-iodine titration analysis method to finally obtain the hyperbranched modified aspartic acid resin.
(II) preparing active nano silicon oxide with a core-shell structure:
(1) putting 100 parts of nano silicon oxide into absolute ethyl alcohol according to parts by weight, carrying out ball milling, filtering, and continuously carrying out ball milling on the nano silicon oxide for controlling the temperature to be 110 ℃ and the time to be 1-5h to obtain pretreated nano silicon oxide; (2) continuously adding 10 parts of isocyanate into the pretreated nano silicon oxide, continuously ball-milling, controlling the temperature to be 100 ℃ for 0.5-2h, continuously adding butanediamine while keeping the ball-milling, reacting for 0.5h, continuously dropwise adding dibutyl maleate, and ball-milling for 0.5h after dropwise adding is finished to obtain the active nano silicon oxide with the core-shell structure.
(III) preparing a coating:
(1) weighing and mixing hyperbranched modified aspartic acid resin, polyurethane acrylate, polyacrylate, a flatting agent and a defoaming agent according to the parts by weight to obtain a mixed material; uniformly mixing the mixed materials in a high-speed stirrer at normal temperature to obtain a component A; the component A comprises the following components: 20 parts of hyperbranched modified aspartic acid resin, 5 parts of polyurethane acrylate, 20 parts of polyacrylate, 0.1 part of a leveling agent and 0.1 part of a defoaming agent;
(2) weighing isocyanate, diisocyanate prepolymer, defoaming agent and flatting agent according to the weight ratio, mixing and ball-milling uniformly at normal temperature to obtain a component B; the component B comprises the following components: 50 parts of isocyanate, 10 parts of active nano silicon oxide with a core-shell structure and 0.5 part of light stabilizer.
Example 2
Preparing hyperbranched modified aspartic acid resin:
(1) adding a trichlorosilane ethanol solution with the mass concentration of 30% into a reaction kettle protected by inert gas, dropwise adding deionized water under the stirring state, wherein the molar ratio of the deionized water to the trichlorosilane is 1:3, reacting for 1 hour at the temperature of 85 ℃, adding diisocyanate, and continuously reacting for 1 hour to obtain a pre-reaction solution; (2) controlling the temperature of the reaction kettle within 20 ℃ by water cooling, and dropwise adding aliphatic primary diamine terminated end into the pre-reaction liquid under a stirring state to obtain silicon block branched modified organic diamine reaction liquid; (3) and (2) slowly dropwise adding dialkyl maleate into the silicon block branched modified organic diamine reaction solution by using a titration funnel, after dropwise adding, heating to 100 ℃ for constant-temperature reaction for 15 hours, then removing and recovering the solvent, and determining the reaction degree by using a mercaptan-iodine titration analysis method to finally obtain the hyperbranched modified aspartic acid resin.
(II) preparing active nano silicon oxide with a core-shell structure:
(1) putting 100 parts of nano silicon oxide into absolute ethyl alcohol according to the parts by weight, carrying out ball milling, filtering, and continuously carrying out ball milling on the nano silicon oxide for controlling the temperature to be 120 ℃ and the time to be 1-5h to obtain pretreated nano silicon oxide; (2) continuously adding 10 parts of isocyanate into the pretreated nano silicon oxide, continuously ball-milling, controlling the temperature to be 110 ℃ for 2 hours, then keeping the ball-milling, continuously adding the butanediamine, reacting for 1 hour, continuously dropwise adding the dibutyl maleate, and ball-milling for 0.5 to 1 hour after the dropwise adding is finished to obtain the active nano silicon oxide with the core-shell structure.
(III) preparing a coating:
(1) weighing and mixing hyperbranched modified aspartic acid resin, polyurethane acrylate, polyacrylate, a flatting agent and a defoaming agent according to the parts by weight to obtain a mixed material; uniformly mixing the mixed materials in a high-speed stirrer at normal temperature to obtain a component A; the component A comprises the following components: 40 parts of hyperbranched modified aspartic acid resin, 10 parts of polyurethane acrylate, 30 parts of polyacrylate, 1.5 parts of a leveling agent and 1 part of a defoaming agent;
(2) weighing isocyanate, diisocyanate prepolymer, defoaming agent and flatting agent according to the weight ratio, mixing and ball-milling uniformly at normal temperature to obtain a component B; the component B comprises the following components: 80 parts of isocyanate, 30 parts of active nano silicon oxide with a core-shell structure and 1.5 parts of light stabilizer.
Example 3
Preparing hyperbranched modified aspartic acid resin:
(1) adding a trichlorosilane ethanol solution with the mass concentration of 20% into a reaction kettle protected by inert gas, dropwise adding deionized water under the stirring state, wherein the molar ratio of the deionized water to the trichlorosilane is 1:3, reacting at the temperature of 80 ℃ for 0.8 hour, adding diisocyanate, and continuing to react for 0.8 hour to obtain a pre-reaction solution; (2) controlling the temperature of the reaction kettle within 18 ℃ by water cooling, and dropwise adding aliphatic primary diamine terminated end into the pre-reaction liquid under a stirring state to obtain silicon block branched modified organic diamine reaction liquid; (3) and (2) slowly dropwise adding dialkyl maleate into the silicon block branched modified organic diamine reaction solution by using a titration funnel, after dropwise adding, heating to 95 ℃ for constant-temperature reaction for 12 hours, then removing and recovering the solvent, and determining the reaction degree by using a mercaptan-iodine titration analysis method to finally obtain the hyperbranched modified aspartic acid resin.
(II) preparing active nano silicon oxide with a core-shell structure:
(1) putting 100 parts of nano silicon oxide into absolute ethyl alcohol according to the parts by weight, carrying out ball milling, filtering, and continuously carrying out ball milling on the nano silicon oxide for controlling the temperature to be 115 ℃ for 3 hours to obtain pretreated nano silicon oxide; (2) continuously adding 10 parts of isocyanate into the pretreated nano silicon oxide, continuously ball-milling, controlling the temperature to be 105 ℃ and the time to be 1.2h, then keeping the ball-milling, continuously adding the butanediamine, reacting for 0.8h, continuously dropwise adding the dibutyl maleate, and after dropwise adding, ball-milling for 0.8h to obtain the active nano silicon oxide with the core-shell structure.
(III) preparing a coating:
(1) weighing and mixing hyperbranched modified aspartic acid resin, polyurethane acrylate, polyacrylate, a flatting agent and a defoaming agent according to the parts by weight to obtain a mixed material; uniformly mixing the mixed materials in a high-speed stirrer at normal temperature to obtain a component A; the component A comprises the following components: 30 parts of hyperbranched modified aspartic acid resin, 8 parts of polyurethane acrylate, 25 parts of polyacrylate, 0.8 part of a leveling agent and 0.5 part of a defoaming agent;
(2) weighing isocyanate, diisocyanate prepolymer, defoaming agent and flatting agent according to the weight ratio, mixing and ball-milling uniformly at normal temperature to obtain a component B; the component B comprises the following components: 65 parts of isocyanate, 20 parts of active nano silicon oxide with a core-shell structure and 1 part of light stabilizer.
Comparative example 1
The procedure was as in example 3 except that the aspartic acid resin was not modified.
Comparative example 2
The modifier of the nano silica is the same as that of the embodiment 3 except that the modifier is common KH 550.
Comparative example 3
The procedure was as in example 3, except that the aspartic acid resin was not modified and the modifier of nano silica was the conventional KH 550.
Performance testing
Sample preparation: taking a piece of tinplate, polishing the tinplate with No. 2000 silicon carbide abrasive paper to remove rust and dirt on the surface, and cleaning the tinplate with absolute ethyl alcohol; the coatings obtained in the above examples and comparative examples were applied to tinplate, the dry film thickness was maintained at 20 μm, and the plate was baked at 100 ℃ for 30 minutes, and the results of the performance tests are shown in the following table:
therefore, the high-wear-resistance weather-resistant corrosion-resistant coating for the locomotive, which is prepared by the invention, has the advantages that the hardness, the wear resistance, the corrosion resistance and the weather resistance of the coating are greatly improved by carrying out specific hyperbranched modification on aspartic acid resin and modifying the core-shell structure of nano silicon oxide.
Although some specific embodiments of the present invention have been described in detail by way of illustration, it should be understood by those skilled in the art that the above illustration is only for the purpose of illustration and is not intended to limit the scope of the invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.
Claims (10)
1. The high-wear-resistance weather-resistant corrosion-resistant coating for the locomotive comprises a component A and a component B, and is characterized in that the component A comprises the following components in parts by weight:
2. the high wear, weather and corrosion resistant coating for locomotives according to claim 1, wherein the isocyanate is one or a combination of more of toluene diisocyanate, diphenylmethane diisocyanate, isophorone diisocyanate, 4' -dicyclohexylmethane diisocyanate, hexamethylene diisocyanate and HDI trimer.
3. The high-wear-resistance weather-resistant corrosion-resistant coating for the locomotives according to claim 1, wherein the preparation method of the active nano silicon oxide with the core-shell structure comprises the following steps: (1) putting 100 parts of nano silicon oxide into absolute ethyl alcohol according to the parts by weight, carrying out ball milling, filtering, and continuously carrying out ball milling on the nano silicon oxide for controlling the temperature at 110-; (2) continuously adding 10 parts of isocyanate into the pretreated nano silicon oxide, continuously ball-milling, controlling the temperature to be 100-.
4. The high-wear-resistance weather-resistant corrosion-resistant coating for the locomotives according to the claims 1 to 3, wherein the preparation method of the hyperbranched modified aspartic acid resin comprises the following steps: (1) adding a trichlorosilane ethanol solution with the mass concentration of 10-30% into a reaction kettle protected by inert gas, dropwise adding deionized water under the stirring state, wherein the molar ratio of the deionized water to the trichlorosilane is 1:3, reacting for 0.5-1 hour at the temperature of 75-85 ℃, adding diisocyanate, and continuously reacting for 0.5-1 hour to obtain a pre-reaction solution; (2) controlling the temperature of the reaction kettle within the range of 15-20 ℃ by water cooling, and dropwise adding aliphatic primary diamine terminated end into the pre-reaction liquid under a stirring state to obtain silicon block branched modified organic diamine reaction liquid; (3) and slowly dropwise adding dialkyl maleate into the silicon block branched modified organic diamine reaction liquid by using a titration funnel, after dropwise adding, heating to 90-100 ℃, reacting at a constant temperature for 10-15h, and then removing and recovering the solvent to finally obtain the hyperbranched modified aspartic acid resin.
5. The high-wear-resistance weather-resistant corrosion-resistant coating for locomotives according to claim 4, wherein the degree of reaction of the hyperbranched modified aspartic acid resin is determined by mercaptan-iodine titration analysis.
6. The high-wear-resistance weather-resistant corrosion-resistant coating for the locomotives according to claim 4, wherein the diisocyanate is one or a combination of hexamethylene diisocyanate, isophorone diisocyanate, toluene diisocyanate and xylylene diisocyanate; the aliphatic primary diamine is one or a combination of hexamethylene diamine, butanediamine, hexamethylene diamine, 2, 4-trimethyl-1, 6-butanediamine, 4' -diaminodicyclohexyl methane and 3, 3-dimethyl-4, 4-diaminodicyclohexyl methane; the dialkyl maleate is one or more of dimethyl maleate, diethyl maleate, diisobutyl maleate, dibutyl maleate, dimethyl fumarate, diethyl fumarate, dipropyl fumarate and dibutyl fumarate.
7. The method for preparing the high wear-resistant weather-resistant corrosion-resistant coating for the locomotive according to any one of claims 1 to 6, comprising the steps of: (1) weighing and mixing the materials uniformly according to the parts by weight to obtain a component A and a component B; (2) mixing the component A and the component B according to a volume ratio of 1: 1, respectively filling the containers into respective containers, and sealing and storing the containers.
8. The method for using the high wear-resistant, weather-resistant and corrosion-resistant coating for the locomotive according to any one of claims 1 to 6, comprising the steps of: (1) the component A and the component B are filled into a glue mixer according to the volume ratio, are uniformly mixed and are coated on a base material of a locomotive to form an uncured paint film; (2) and curing the paint film to completely cure and crosslink the paint film.
9. The method of using the high wear, weather and corrosion resistant coating for locomotives according to claim 8, wherein the coating is spray coating.
10. The highly abrasion-resistant, weather-resistant and corrosion-resistant coating for locomotives according to any one of claims 1 to 6, wherein it is used for a primer, a middle coat and a top coat of a locomotive.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116285616A (en) * | 2023-03-01 | 2023-06-23 | 山东卓高新材料有限公司 | Water-based polyaspartate polyurea joint beautifying agent and preparation method thereof |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1871269A (en) * | 2003-10-22 | 2006-11-29 | 拜尔材料科学有限公司 | Preparing method of moisture-curable, polyether urethanes with reactive silane groups and their use as sealants, adhesive and coatings |
| WO2010057667A1 (en) * | 2008-11-24 | 2010-05-27 | MAX-PLANCK-Gesellschaft zur Förderung der Wissenschaften e.V. | Corrosion inhibiting coatings controllable by electromagnetic irradiation and methods for corrosion inhibition using the same |
| CN104066423A (en) * | 2011-11-09 | 2014-09-24 | 欧莱雅 | Compositions and methods for altering the appearance of hair |
| CN104693945A (en) * | 2013-12-09 | 2015-06-10 | 上海闵临机电科技有限公司 | Novel acrylic resin coating |
| CN104744707A (en) * | 2015-04-15 | 2015-07-01 | 广州市金铂尔化工有限公司 | Preparation method of siloxane modified polyaspartic acid ester |
| CN105238030A (en) * | 2015-10-09 | 2016-01-13 | 滁州环球聚氨酯科技有限公司 | Nano silicon dioxide modified polyurethane composite material |
| CN107805449A (en) * | 2017-11-13 | 2018-03-16 | 四川正大新材料科技有限公司 | A kind of heavy antisepsis water-repellent paint and preparation method thereof, special building, ship, automobile |
| CN108659648A (en) * | 2018-06-22 | 2018-10-16 | 佛山陵朝新材料有限公司 | A kind of weather-proof coatings of bi-component wind electricity blade |
| CN109021797A (en) * | 2018-06-22 | 2018-12-18 | 安徽快来防水防腐有限公司 | A kind of antiseptic fire-retardation poly-aspartic-acid polyurea waterproof coating material and preparation method thereof |
| CN109467571A (en) * | 2018-09-29 | 2019-03-15 | 万华化学集团股份有限公司 | A kind of silicone-modified aspartate and its preparation method and application |
| CN109852219A (en) * | 2018-12-28 | 2019-06-07 | 中国船舶重工集团公司第七二五研究所 | A kind of elastic intermediate coat and preparation method thereof on the anti-skidding deck of helicopter |
| CN110564274A (en) * | 2019-08-12 | 2019-12-13 | 王道前 | Wear-resistant polyurea coating and preparation method and application thereof |
| CN110903748A (en) * | 2019-12-13 | 2020-03-24 | 上海海隆赛能新材料有限公司 | Elastic anti-corrosive polyaspartic acid coating and preparation method thereof |
| CN113150634A (en) * | 2021-05-31 | 2021-07-23 | 江阴市荣新塑化有限公司 | High-wear-resistance weather-resistant coating for automobiles and preparation method thereof |
-
2021
- 2021-08-30 CN CN202111001010.3A patent/CN113683947B/en active Active
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1871269A (en) * | 2003-10-22 | 2006-11-29 | 拜尔材料科学有限公司 | Preparing method of moisture-curable, polyether urethanes with reactive silane groups and their use as sealants, adhesive and coatings |
| WO2010057667A1 (en) * | 2008-11-24 | 2010-05-27 | MAX-PLANCK-Gesellschaft zur Förderung der Wissenschaften e.V. | Corrosion inhibiting coatings controllable by electromagnetic irradiation and methods for corrosion inhibition using the same |
| CN104066423A (en) * | 2011-11-09 | 2014-09-24 | 欧莱雅 | Compositions and methods for altering the appearance of hair |
| CN104693945A (en) * | 2013-12-09 | 2015-06-10 | 上海闵临机电科技有限公司 | Novel acrylic resin coating |
| CN104744707A (en) * | 2015-04-15 | 2015-07-01 | 广州市金铂尔化工有限公司 | Preparation method of siloxane modified polyaspartic acid ester |
| CN105238030A (en) * | 2015-10-09 | 2016-01-13 | 滁州环球聚氨酯科技有限公司 | Nano silicon dioxide modified polyurethane composite material |
| CN107805449A (en) * | 2017-11-13 | 2018-03-16 | 四川正大新材料科技有限公司 | A kind of heavy antisepsis water-repellent paint and preparation method thereof, special building, ship, automobile |
| CN108659648A (en) * | 2018-06-22 | 2018-10-16 | 佛山陵朝新材料有限公司 | A kind of weather-proof coatings of bi-component wind electricity blade |
| CN109021797A (en) * | 2018-06-22 | 2018-12-18 | 安徽快来防水防腐有限公司 | A kind of antiseptic fire-retardation poly-aspartic-acid polyurea waterproof coating material and preparation method thereof |
| CN109467571A (en) * | 2018-09-29 | 2019-03-15 | 万华化学集团股份有限公司 | A kind of silicone-modified aspartate and its preparation method and application |
| CN109852219A (en) * | 2018-12-28 | 2019-06-07 | 中国船舶重工集团公司第七二五研究所 | A kind of elastic intermediate coat and preparation method thereof on the anti-skidding deck of helicopter |
| CN110564274A (en) * | 2019-08-12 | 2019-12-13 | 王道前 | Wear-resistant polyurea coating and preparation method and application thereof |
| CN110903748A (en) * | 2019-12-13 | 2020-03-24 | 上海海隆赛能新材料有限公司 | Elastic anti-corrosive polyaspartic acid coating and preparation method thereof |
| CN113150634A (en) * | 2021-05-31 | 2021-07-23 | 江阴市荣新塑化有限公司 | High-wear-resistance weather-resistant coating for automobiles and preparation method thereof |
Non-Patent Citations (3)
| Title |
|---|
| BRYLEE DAVID B.TIU等: "Polymeric corrosion inhibitors for the oil and gas industry: Design principles and mechanism", 《REACTIVE AND FUNCTIONAL POLYMERS》 * |
| 仇伟等: "新型喷涂用双组分聚脲/丙烯酸聚氨酯复合涂料", 《表面技术》 * |
| 关有俊等: "新型有机硅改性聚脲树脂的开发及应用研究", 《涂料技术与文摘》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116285616A (en) * | 2023-03-01 | 2023-06-23 | 山东卓高新材料有限公司 | Water-based polyaspartate polyurea joint beautifying agent and preparation method thereof |
| CN116285616B (en) * | 2023-03-01 | 2023-09-26 | 山东卓高新材料有限公司 | Water-based polyaspartate polyurea joint beautifying agent and preparation method thereof |
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