CN111410907A - Self-repairing type temperature-resistant wear-resistant polyaspartic acid ester coating and preparation method thereof - Google Patents
Self-repairing type temperature-resistant wear-resistant polyaspartic acid ester coating and preparation method thereof Download PDFInfo
- Publication number
- CN111410907A CN111410907A CN202010292755.9A CN202010292755A CN111410907A CN 111410907 A CN111410907 A CN 111410907A CN 202010292755 A CN202010292755 A CN 202010292755A CN 111410907 A CN111410907 A CN 111410907A
- Authority
- CN
- China
- Prior art keywords
- resistant
- component
- preparation
- self
- wear
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
- C09D179/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen, with or without oxygen, or carbon only, not provided for in groups C09D161/00 - C09D177/00
- C09D179/04—Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
- C09D179/08—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
-
- 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
- C09D5/18—Fireproof paints including high temperature resistant 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
- C09D7/40—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
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
-
- 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
- C09D7/65—Additives macromolecular
-
- 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
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
- C08K2003/3045—Sulfates
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/04—Polymer mixtures characterised by other features containing interpenetrating networks
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2312/00—Crosslinking
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Paints Or Removers (AREA)
Abstract
A self-repairing type temperature-resistant wear-resistant polyaspartic acid ester coating and a preparation method thereof are disclosed, wherein the coating is prepared by mixing a component A and a component B according to the mass ratio of 2-4: 1: the component A comprises polyaspartic acid resin, amino-terminated organic silicon, coloring pigment, filler, dispersant, ultraviolet light absorber, ultraviolet light stabilizer, anti-settling agent, leveling agent, defoaming agent and solvent; the component B comprises isocyanate, polysulfide modified epoxy resin and a diluent. The invention also discloses a preparation method of the self-repairing type temperature-resistant wear-resistant polyaspartic acid ester coating. The coating has high solid content and is environment-friendly, and the thickness of one-time film forming is more than or equal to 80 mu m; the drying speed of the construction coating is high, and the construction efficiency is high; the paint film constructed by the paint has good self-repairability, smooth surface, excellent wear resistance and excellent temperature resistance. The preparation method has simple process and low cost, and is suitable for industrial production.
Description
Technical Field
The invention relates to a polyaspartic ester coating, in particular to a self-repairing type temperature-resistant wear-resistant polyaspartic ester coating and a preparation method thereof.
Background
With the increasing environmental protection requirement, the traditional fuel truck has a trend of gradually converting into an electric truck, and the electric truck and the fuel truck are mainly designed in a way that the power of the electric truck is derived from a battery-driven motor directly installed in an axle, because the temperature of the motor is above 120 ℃ in the operation process, the high temperature is quickly transmitted to the axle, and because the axle chassis is lower away from the ground and the operation condition of the truck is poor, a layer of protective coating needs to be sprayed on the axle chassis of the truck. The coating is required to be durable and temperature resistant, and the traditional axle protective coating cannot meet the two requirements at the same time.
CN 106010188A discloses a self-repairing polyurethane waterproof coating and a preparation method thereof, the coating is mainly used in the field of building waterproofing, a gel technology and a microcapsule technology are applied to the coating, when the coating cracks, an internal active material is exposed, and under the action of water, the coating can automatically and rapidly react to generate a reactant to repair cracks and block leakage. The axle conditions are quite different from the above, and therefore, the coating is not suitable for being used as an axle protective coating of an electric axle truck.
CN 108715728A discloses a high-wear-resistance polyurethane coating capable of automatically repairing scratches, which mainly reduces and eliminates scratches by increasing the mechanical strength of a paint film and the cohesion among molecules in the paint film, and the paint film is slow in drying speed and inferior to the invention in VOC (volatile organic compounds) emission.
CN 109401598A discloses an antifouling self-repairing coating and a preparation method thereof, the antifouling self-repairing coating achieves the aim of antifouling self-repairing by adding self-cleaning resin and flexible resin, reducing the surface energy and reducing the hardness of a paint film, but the paint film has low hardness and is not suitable for an axle, and the coating needs to be heated and cured.
In order to meet the requirements of the coating in the industry, the existing various self-repairing polyaspartic acid ester coatings have poor temperature resistance and wear resistance and are not suitable for axle protection.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the defects in the prior art and providing the self-repairing type temperature-resistant and wear-resistant polyaspartic ester coating which is high in construction efficiency, high in solid content, weather-resistant and medium-resistant.
The invention further aims to solve the technical problem of overcoming the defects in the prior art and providing a preparation method of the self-repairing type temperature-resistant wear-resistant polyaspartic acid ester coating which is simple in process, low in cost, suitable for industrial production and particularly suitable for automobile axles.
The technical scheme adopted by the invention for solving the technical problems is as follows: a self-repairing type temperature-resistant wear-resistant polyaspartic ester coating is prepared by mixing a component A and a component B: the component A comprises polyaspartic acid resin, amino-terminated organic silicon, coloring pigment, filler, dispersant, ultraviolet light absorber, ultraviolet light stabilizer, anti-settling agent, leveling agent, defoaming agent and solvent; the component B comprises isocyanate, polysulfide modified epoxy resin and a diluent.
The component A in the self-repairing type temperature-resistant wear-resistant polyaspartic ester coating is mainly used as a base material, and different types of polyaspartic resins are added to ensure that the product reaches a balance in the activation period and the drying time; the added amino-terminated organic silicon and polysulfide modified epoxy resin endow the paint film with more excellent performance, wherein the amino-terminated resin can provide better smoothness for the paint film through the reaction and crosslinking with isocyanate, so that the wear resistance of the paint film is improved, and the temperature resistance of the paint film can also be improved; the component B is mainly used as a curing agent, and the addition of the polysulfide modified epoxy resin in the component B mainly utilizes that SH groups in the resin can generate reversible reaction under the induction of light or an oxidant/reducing agent, so that the effect of self-repairing damage of a paint film is achieved. In addition, hydroxyl on the branched chain of the polysulfide modified epoxy resin can react with isocyanate, and the epoxy group for the polysulfide modified epoxy resin in the component A can react with the polyaspartic acid ester resin in the component A. Thus, several types of chemical reactions are present in the coating system simultaneously to form different types of crosslinks, resulting in an interpenetrating network with unexpected results.
Preferably, the mass ratio of the component A to the component B is 2-4: 1. The self-repairing type temperature-resistant wear-resistant polyaspartic ester coating prepared according to the mass ratio has optimal temperature resistance and wear resistance.
Preferably, the weight parts of the raw materials are as follows: the component A comprises 23-55 parts of polyaspartic acid ester resin, 2-5 parts of amino-terminated organic silicon, 3-20 parts of coloring pigment, 30-35 parts of filler, 0.5-1 part of dispersing agent, 0.5-1 part of ultraviolet absorbent, 0.5-1 part of ultraviolet stabilizer, 0.3-1 part of anti-settling agent, 0.2-1 part of flatting agent, 0.3-0.5 part of defoaming agent and 7.7-11.5 parts of solvent; the component B comprises 55-85 parts of isocyanate, 10-30 parts of polysulfide modified epoxy resin and 5-15 parts of diluent. The use amount of various raw materials can meet the requirements of various indexes of the product only within the range.
Preferably, in the component A, the aliphatic synthesis hindered amine polyurea resin is one or more of F420, F524 or F520 produced by flying chemical industry, K8420, K8428 or K8520 produced by Guangzhou Jinplatil chemical industry, JH-8122, JH-8142 or JH-8152 produced by Shanghai Jun and chemical industry.
Preferably, in the component A, the amino-terminated organosilicon is one or two of 1, 3-diamino propyl-1, 1,3, 3-tetramethyl disiloxane and amino ethyl amino propyl trimethoxy silane.
Preferably, in the component A, the coloring pigment is one or more of high pigment carbon black, rutile titanium white, lemon yellow or phthalocyanine blue and the like.
Preferably, in the component A, the filler is one or more of mica powder, talcum powder, kaolin, barium sulfate and the like.
Preferably, in the component A, the dispersant is one or more of BYK-110, BYK-161, BYK-163 or BYK-ATU and the like produced by Bick company.
Preferably, in the component A, the ultraviolet light absorber is one or more of Pasf 384-2, Qidong Jinmei chemical UV-1, Tianjin Lianlong chemical 1130 or Chinese Taiwan double bond chemical CS5530 and the like.
Preferably, in the component A, the anti-settling agent is degussa R972.
Preferably, in the component A, the leveling agent is one or more of polyether modified polydimethylsiloxane, acrylate copolymer or fluorocarbon polymer.
Preferably, in the component A, the defoaming agent is modified polysiloxane and/or organosilicon polymer.
Preferably, in the component A, the solvent is one or more of xylene, n-butyl acetate, propylene glycol monomethyl ether acetate or ethyl acetate.
Preferably, in the B component, the isocyanate is hexamethylene diisocyanate trimer. More preferably, the hexamethylene diisocyanate trimer is one or more of N3790, N3600, N3300 or N3390 produced by Bayer. The invention selects rigid and flexible isocyanate for reasonable collocation, so that the activation period and the drying time of the product, and the hardness and the flexibility of the product all reach a dynamic balance.
Preferably, in the component B, the polysulfide modified epoxy resin is aliphatic polysulfide modified epoxy resin EPS15 and/or EPS25 produced by Hechengjian technology development limited. The SH groups in the polysulfide modified epoxy resin can generate reversible reaction between sulfydryl under the induction of light or oxidant/reducing agent, thereby achieving the effect of repairing scratches.
Preferably, in the component B, the diluent is dehydrated xylene and/or dehydrated n-butyl acetate.
The technical scheme adopted for further solving the technical problems is as follows: a preparation method of a self-repairing type temperature-resistant wear-resistant polyaspartic acid ester coating comprises the following steps:
(1) the preparation method of the component A comprises the following steps: firstly, mixing polyaspartic acid ester resin, amino-terminated organic silicon, coloring pigment, filler, dispersant, anti-settling agent, defoaming agent and part of solvent, dispersing, and grinding into slurry; then adding an ultraviolet light absorber, an ultraviolet light stabilizer, a flatting agent and the rest solvent into the slurry for blending and filtering to obtain a component A;
(2) the preparation method of the component B comprises the following steps: firstly, adding isocyanate and polysulfide modified epoxy resin into a reaction kettle, stirring and heating at a constant speed, carrying out heat preservation reaction until the mass percentage of isocyanate reaches 11-19% (preferably 14-18%), cooling, adding a diluent, and stirring uniformly to obtain a component B;
(3) and (3) mixing the component A obtained in the step (1) and the component B obtained in the step (2) to obtain the adhesive.
Further, in the step (1), the polyaspartic acid resin, the amino-terminated organic silicon, the coloring pigment, the filler, the dispersing agent, the anti-settling agent and a part of the solvent are added first, and the mass ratio of the ultraviolet light absorber, the ultraviolet light stabilizer, the leveling agent and the rest of the solvent added after grinding into slurry is 1: 0.2-1.0. Firstly, polyaspartic acid ester resin, amino-terminated organic silicon, coloring pigment, filler, dispersant, anti-settling agent, defoaming agent and part of solvent are added for mixing, and the aim is to ensure that the slurry has higher viscosity and improve the dispersion effect of the pigment and the filler; after being ground into slurry, the pigment and filler are added with ultraviolet light absorber, ultraviolet light stabilizer, leveling agent and residual solvent, so that the pigment and filler are well dispersed in a system, the storage stability of the product is improved, the product packaging is facilitated, and the production efficiency of the product is improved.
Further, the mass ratio of the component A to the component B is 2-4: 1.
Further, in the step (1), the rotating speed of the dispersion is 800-1200 r/min, and the dispersion time is 30-60 min. If the dispersion speed is too low, the dispersion effect is poor; if the dispersion speed is too high, the temperature of the raw materials rises, the volatilization of the solvent is accelerated, and the product quality problem and the environmental pollution are easy to generate. If the dispersion time is too short, the product is not uniformly mixed, and the product quality problem is easy to generate; if the dispersion time is too long, energy waste is caused, and the production efficiency is reduced.
Further, in the step (1), the fineness of solid material particles in the slurry is less than or equal to 20 microns.
Further, in the step (1), the blending rotating speed is 300-500 r/min, and the blending time is 45-90 min. If the blending speed is too low, the dispersion effect is poor; if the blending speed is too high, the temperature of the raw materials rises, the volatilization of the solvent is accelerated, and the product quality problem and the environmental pollution are easy to generate. If the blending time is too short, the product is not uniformly mixed, and the product quality problem is easy to generate; if the blending time is too long, energy waste is caused, and the production efficiency is reduced.
Further, in the step (1), the filtration is performed by using a 100-300 mesh silk cloth.
Further, in the step (2), the uniform stirring speed is 120-180 r/min. If the stirring speed is too low, the time for uniformly mixing the raw materials is prolonged, so that the time for complete reaction is prolonged; if the stirring speed is too high, the shearing force is increased, the temperature of the raw materials is increased, and isocyanate is self-polymerized, thereby affecting the product quality.
Further, in the step (2), the heating temperature is 80 +/-3 ℃, and the heat preservation reaction time is 2-4 h. If the heating temperature is too low, the raw materials are not reacted completely; if the heating temperature is too high, the isocyanate may be caused to self-polymerize, thereby affecting the product quality. If the heat preservation time is too short, the raw materials are not reacted completely; if the heat preservation time is too long, energy waste is caused, and the production efficiency is influenced.
Further, in the step (2), the cooling is carried out to 50 +/-3 ℃.
Further, in the step (2), the stirring speed after the diluent is added is 80-140 r/min, and the stirring time is 30-60 min. If the stirring speed is too low, the time for uniform mixing is prolonged, so that the production efficiency is influenced; if the stirring speed is too high, the temperature of the raw materials is too high, and the solvent is volatilized, so that waste and environmental pollution are caused. If the stirring time is too short, the raw materials are not uniformly mixed, so that the product quality is influenced; if the stirring time is too long, energy waste is caused, and the production efficiency is affected.
In the step (2), the purpose of detecting the mass percentage of the isocyanate group is to judge whether the reaction of the isocyanate and the polysulfide modified epoxy resin is complete. The isocyanate and the polysulfide modified epoxy resin are added firstly for the purpose of fully and efficiently reacting the two raw materials, and then the diluent is added for reducing the viscosity of the product and facilitating the packaging and construction.
After the self-repairing type temperature-resistant wear-resistant polyaspartic acid ester coating prepared by the method is constructed into a paint film, the paint film has good self-repairing performance, meanwhile, the surface of the paint film is smooth, the drying speed is high, and particularly, the axle protection requirement of an electric truck can be well met.
The invention has the following beneficial effects: (1) the automobile self-repairing type temperature-resistant wear-resistant polyaspartic acid ester coating can be directly sprayed on the surface of an automobile axle system steel member, and also can be sprayed on the surface of an axle member coated with a base coat, so that the coating film has a good repairing effect on scratches; the paint film has low surface energy, can provide good wear resistance for a long time, can resist high temperature of 120 ℃ for a long time, and can provide all-round protection for an axle system of the electric truck; the coating obtained by the construction of the invention has high drying speed, the one-time film forming thickness is more than or equal to 80 mu m, the construction efficiency is high, and the requirement of the field construction assembly line operation of automobile companies can be well met; meanwhile, the coating product disclosed by the invention is high in solid content, belongs to an environment-friendly type, can improve the overall coating level of the axle of the electric truck, improves the market competitiveness of the automobile, and has a wide market prospect; (2) the preparation method has simple process and low cost, and is suitable for industrial production.
Detailed Description
The present invention will be further described with reference to the following examples.
The isocyanate hexamethylene diisocyanate trimer N3790, N3600, N3390 and N3300 used in the examples of the present invention are all purchased from Bayer; the used polysulfide modified epoxy resins EPS15 and EPS25 are purchased from Hengjian technology development Limited company in Beijing sky; the used polyaspartic ester resins F420, F524 and F520 are all purchased from Feiyang chemical engineering; k8420, K8428 and K8520 are purchased from Guangzhou Kingplatil chemical industry, and the used amino-terminated organic silicon is purchased from Dow Corning; the used coloring pigment carbon black MA-100 is purchased from Mitsubishi chemical industry, and the titanium white R930 is purchased from Mitsubishi chemical industry; the dispersants BYK-110 and BYK-ATU used are all purchased from Pico company; the anti-settling agent used R972 was purchased from degussa; the used ultraviolet light absorber 384-2 is purchased from Pasf, and the ultraviolet light absorber CS5530 is purchased from Taiwan double bond chemical engineering; the used ultraviolet light stabilizer CS292 is purchased from Taiwan double bond chemical engineering, and the ultraviolet light stabilizer 123 is purchased from Basff.
Other chemicals used in the examples of the present invention, unless otherwise specified, are commercially available in a conventional manner.
Examples 1 to 3
Examples 1-3 of self-repairing type temperature-resistant and wear-resistant polyaspartic ester coating
Wherein the weight parts of the raw materials of the component A and the component B are shown in the following table 1 and table 2:
TABLE 1 weight parts of the raw materials of component A in examples 1-3 of the self-repairing type temperature and wear resistant polyaspartic ester coating of the present invention
TABLE 2 weight parts of the raw materials of component B in examples 1-3 of the self-repairing type temperature and wear resistant polyaspartic ester coating of the present invention
Example 1 of the preparation method of the temperature-resistant and wear-resistant polyaspartic acid ester coating
(1) The preparation method of the component A comprises the following steps: according to the weight parts of the raw materials in the table 1, firstly, polyaspartic ester resin is mixed with coloring pigment, filler, dispersant, anti-settling agent, defoaming agent and partial solvent, then the mixture is dispersed for 40min at the speed of 800r/min, and then the mixture is ground to the fineness of 20 μm by a sand mill to obtain slurry; then adding an ultraviolet light absorber, an ultraviolet light stabilizer, a flatting agent and the residual solvent into the slurry, blending for 50min at 350r/min, and filtering by using 200-mesh silk cloth to obtain a component A;
(2) the preparation method of the component B comprises the following steps: according to the weight parts of the raw materials in the table 2, firstly adding isocyanate and polysulfide modified epoxy resin into a reaction kettle, stirring and heating to 83 ℃ at a constant speed of 180r/min, preserving heat for reaction for 4 hours until the mass percent of isocyanate reaches 14.5%, cooling to 48 ℃, adding a diluent, and stirring for 35 minutes at 120r/min to obtain a component B;
(3) and (3) mixing the component A obtained in the step (1) and the component B obtained in the step (2) according to the mass ratio of 2:1 to obtain the high-performance high-temperature-resistant.
Example 2 of the preparation method of the self-repairing type temperature-resistant and wear-resistant polyaspartic acid ester coating
(1) The preparation method of the component A comprises the following steps: according to the weight parts of the raw materials in the table 1, firstly, mixing the polyaspartic acid ester resin with the coloring pigment, the filler, the dispersant, the anti-settling agent, the defoaming agent and a part of solvent, dispersing for 45min at 1000r/min, and then grinding to the fineness of 20 microns by using a sand mill to obtain slurry; then adding an ultraviolet light absorber, an ultraviolet light stabilizer, a flatting agent and the residual solvent into the slurry, regulating the temperature at 400r/min for 65min, and filtering by using 200-mesh silk cloth to obtain a component A;
(2) the preparation method of the component B comprises the following steps: according to the weight parts of the raw materials in the table 2, firstly adding isocyanate and polysulfide modified epoxy resin into a reaction kettle, stirring and heating to 80 ℃ at a constant speed of 140r/min, preserving heat for reaction for 3 hours until the mass percent of isocyanate reaches 16%, cooling to 50 ℃, adding a diluent, and stirring for 50 minutes at 100r/min to obtain a component B;
(3) and (3) mixing the component A obtained in the step (1) and the component B obtained in the step (2) according to the mass ratio of 3:1 to obtain the adhesive.
Example 3 of the preparation method of the self-repairing type temperature-resistant and wear-resistant polyaspartic acid ester coating
(1) The preparation method of the component A comprises the following steps: according to the weight parts of the raw materials in the table 1, firstly, polyaspartic ester resin is mixed with coloring pigment, filler, dispersant, anti-settling agent, defoaming agent and partial solvent, and then the mixture is dispersed for 60min at 1200r/min, and then the mixture is ground by a sand mill until the fineness is less than or equal to 20 mu m, so as to obtain slurry; then adding an ultraviolet light absorber, an ultraviolet light stabilizer, a flatting agent and the residual solvent into the slurry, blending for 80min at 500r/min, and filtering by using 200-mesh silk cloth to obtain a component A;
(2) the preparation method of the component B comprises the following steps: according to the weight parts of the raw materials in the table 2, firstly adding isocyanate and polysulfide modified epoxy resin into a reaction kettle, stirring and heating to 78 ℃ at a constant speed of 120r/min, preserving heat for reaction for 2 hours until the mass percent of isocyanate reaches 17.5%, cooling to 52 ℃, adding a diluent, and stirring for 60 minutes at 80r/min to obtain a component B;
(3) and (3) mixing the component A obtained in the step (1) and the component B obtained in the step (2) according to the mass ratio of 4:1 to obtain the high-performance high-temperature-resistant.
The self-repairing type temperature-resistant and wear-resistant polyaspartic ester coating obtained in the examples 1-3 and the polyaspartic ester coating produced in the prior art are respectively sprayed on an automobile chassis frame (made of a steel plate) through a PROMIX 2KE two-component electronic proportioning flow meter system and an air auxiliary spray gun, and the coating thicknesses (dry films) of the coatings of the examples 1-3 and the comparative example are both 80 +/-5 mu m. The technical index requirements of automobile factories on products and the actual measurement results of the coating performance of the coatings of the examples 1-3 and the comparative example 1 are shown in Table 3.
Table 3 results of actual measurement of performances of self-repairing type temperature-resistant and wear-resistant polyaspartic acid ester coatings of examples 1-3 and coating films of coating of comparative example 1
As can be seen from Table 3, compared with the comparative examples, the coatings of examples 1 to 3 have better temperature resistance, wear resistance and self-repairing performance; the coating also has higher solid content and lower VOC content, and belongs to an environment-friendly product; meanwhile, the coating has shorter surface drying time and actual drying time and better weather resistance, and the product construction can improve the construction efficiency of the flow line operation of an automobile factory.
The three coatings in the embodiments 1-3 of the invention are respectively subjected to sample plate and axle spraying construction in three automobile factories in China, and after the sample plate is exposed to the damp and hot ocean environment for 12 months, the coating surface has no defects of discoloration, light loss, pulverization, corrosion and the like; after the axle sprayed with the coating provided by the invention is used for 2 years, the coating is flat and smooth, and no obvious scratch or abrasion is caused.
Claims (10)
1. The self-repairing type temperature-resistant wear-resistant polyaspartic ester coating is characterized by being prepared by mixing a component A and a component B: the mass ratio of the component A to the component B is preferably 2-4: 1; the component A comprises polyaspartic acid ester resin, amino-terminated organic silicon, coloring pigment, filler, dispersant, ultraviolet light absorber, ultraviolet light stabilizer, anti-settling agent, leveling agent, defoaming agent and solvent; the component B comprises isocyanate, polysulfide modified epoxy resin and a diluent.
2. The self-repairing type temperature-resistant and wear-resistant polyaspartic ester coating as claimed in claim 1, wherein the component A comprises the following raw materials in parts by weight: 23-55 parts of polyaspartic acid ester resin, 2-5 parts of amino-terminated organic silicon, 3-20 parts of coloring pigment, 30-35 parts of filler, 0.5-1 part of dispersing agent, 0.5-1 part of ultraviolet absorber, 0.5-1 part of ultraviolet stabilizer, 0.3-1 part of anti-settling agent, 0.2-1 part of flatting agent, 0.3-0.5 part of defoaming agent and 7.7-11.5 parts of solvent.
3. The self-repairing type temperature-resistant and wear-resistant polyaspartic ester coating as claimed in claim 1 or 2, wherein the component B comprises the following raw materials in parts by weight: 55-85 parts of isocyanate, 10-30 parts of polysulfide modified epoxy resin and 5-15 parts of diluent.
4. The self-repairing type temperature-resistant and wear-resistant polyaspartic acid ester coating as claimed in any one of claims 1 to 3, wherein in the component A, the polyaspartic acid ester resin is one or more of F420, F524, F520, K8420, K8428, K8520, JH-8122, JH-8142 or JH-8152, the amino-terminated organosilicon is one or two of 1, 3-diaminopropyl-1, 1, 3-tetramethyldisiloxane and aminoethyl aminopropyltrimethoxysilane, the coloring pigment is one or more of high-pigment carbon black, rutile titanium white, lemon yellow or phthalocyanine blue, the filler is one or more of calcium carbonate, talc powder, kaolin or barium sulfate, the dispersing agent is one or more of BYK-110, BYK-161, BYK-163 or BYK-ATU, the ultraviolet light absorbing agent is one or more of Basban 384-2, Qiijinmei chemical engineering chemical industry copolymer of BYK-292, BYK-51 or BYK-7, the dispersing agent is one or more of chemical industry silicone industry chemical industry copolymer of BaoN-2, the ultraviolet absorption agent is one or two or more of chemical industry silicone industry copolymer of the UV-acrylate, the UV-7-ABS 2, the UV-7-ABS 2-.
5. The self-repairing type temperature-resistant and wear-resistant polyaspartic ester coating as claimed in any one of claims 1 to 4, wherein: in the component B, the isocyanate is hexamethylene diisocyanate trimer; the polysulfide modified epoxy resin is one or two of aliphatic polysulfide modified epoxy resins EPS15 and EPS25 of Hengjian technology development limited company in Beijing sky; the diluent is one or two of dehydrated dimethylbenzene or dehydrated n-butyl acetate.
6. The preparation method of the self-repairing type temperature-resistant and wear-resistant polyaspartic acid ester coating as claimed in any one of claims 1 to 5, wherein the preparation method comprises the following steps:
(1) the preparation method of the component A comprises the following steps: firstly, mixing polyaspartic acid ester resin, amino-terminated organic silicon, coloring pigment, filler, dispersant, anti-settling agent and partial solvent, then dispersing and grinding into slurry; adding an ultraviolet light absorber, an ultraviolet light stabilizer, a flatting agent and the rest solvent into the slurry, blending and filtering to obtain a component A;
(2) the preparation method of the component B comprises the following steps: adding isocyanate and polysulfide modified epoxy resin into a reaction kettle, heating under a uniform stirring state, carrying out heat preservation reaction until the mass percentage of isocyanate reaches 11-19%, cooling, adding a diluent, stirring uniformly, and filtering to obtain a component B;
(3) mixing the component A obtained in the step (1) and the component B obtained in the step (2) to obtain the composite material; the mass ratio of the component A to the component B is preferably 2-4: 1.
7. The preparation method of the self-repairing type temperature-resistant and wear-resistant polyaspartic acid ester coating as claimed in claim 6, wherein the preparation method comprises the following steps: in the step (1), the mass ratio of the polyaspartic acid resin, the amino-terminated organic silicon, the coloring pigment, the filler, the dispersing agent, the anti-settling agent and part of the solvent which are added to the mixture and the ultraviolet light absorber, the ultraviolet light stabilizer, the leveling agent and the rest of the solvent which are added after being ground into slurry is 1: 0.2-1.0.
8. The preparation method of the self-repairing type temperature-resistant and wear-resistant polyaspartic acid ester coating as claimed in claim 6 or 7, wherein the preparation method comprises the following steps: in the step (1), the rotating speed of the dispersion is 800-1200 r/min, and the dispersion time is 30-60 min; the fineness of the slurry is less than or equal to 20 mu m.
9. The preparation method of the self-repairing type temperature-resistant and wear-resistant polyaspartic acid ester coating as claimed in any one of claims 6 to 8, wherein the preparation method comprises the following steps: in the step (1), the blending rotating speed is 300-500 r/min, and the blending time is 45-90 min; the filtration is carried out by using 100-300 meshes of silk cloth.
10. The preparation method of the self-repairing type temperature-resistant and wear-resistant polyaspartic acid ester coating as claimed in any one of claims 6 to 9, wherein the preparation method comprises the following steps: in the step (2), the stirring speed of the uniform stirring is 120-180 r/min; the heating temperature is 80 +/-3 ℃, and the heat preservation reaction time is 2-4 h; the cooling is carried out to 50 +/-3 ℃; the diluent is added and stirred at the speed of 80-140 r/min, and the stirring time is 30-60 min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010292755.9A CN111410907B (en) | 2020-04-15 | 2020-04-15 | Self-repairing type temperature-resistant wear-resistant polyaspartic acid ester coating and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010292755.9A CN111410907B (en) | 2020-04-15 | 2020-04-15 | Self-repairing type temperature-resistant wear-resistant polyaspartic acid ester coating and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111410907A true CN111410907A (en) | 2020-07-14 |
| CN111410907B CN111410907B (en) | 2021-12-17 |
Family
ID=71489887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010292755.9A Active CN111410907B (en) | 2020-04-15 | 2020-04-15 | Self-repairing type temperature-resistant wear-resistant polyaspartic acid ester coating and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111410907B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113292926A (en) * | 2021-04-28 | 2021-08-24 | 常州大学 | Water-based self-repairing epoxy anticorrosive paint and preparation method thereof |
| CN115611554A (en) * | 2021-03-02 | 2023-01-17 | 北京研筑久筑建筑科技有限公司 | Modified epoxy resin abrasion-resistant repair mortar and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104530954A (en) * | 2014-12-29 | 2015-04-22 | 中昊北方涂料工业研究设计院有限公司 | Oil-resistant and anti-aging protective coating for rubber shock absorber and preparation method thereof |
| CN107446476A (en) * | 2017-08-10 | 2017-12-08 | 湘江涂料科技有限公司 | A kind of automobile chassis system-specific bottom surface unification polyurea protection coating and preparation method |
| CN109456684A (en) * | 2018-11-14 | 2019-03-12 | 四川嘉宝莉涂料有限公司 | A kind of Polyaspartic Polyurea protective coating, preparation method, application method and application with good corrosion resistance |
-
2020
- 2020-04-15 CN CN202010292755.9A patent/CN111410907B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104530954A (en) * | 2014-12-29 | 2015-04-22 | 中昊北方涂料工业研究设计院有限公司 | Oil-resistant and anti-aging protective coating for rubber shock absorber and preparation method thereof |
| CN107446476A (en) * | 2017-08-10 | 2017-12-08 | 湘江涂料科技有限公司 | A kind of automobile chassis system-specific bottom surface unification polyurea protection coating and preparation method |
| CN109456684A (en) * | 2018-11-14 | 2019-03-12 | 四川嘉宝莉涂料有限公司 | A kind of Polyaspartic Polyurea protective coating, preparation method, application method and application with good corrosion resistance |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115611554A (en) * | 2021-03-02 | 2023-01-17 | 北京研筑久筑建筑科技有限公司 | Modified epoxy resin abrasion-resistant repair mortar and preparation method thereof |
| CN115611554B (en) * | 2021-03-02 | 2023-12-22 | 北京研筑久筑建筑科技有限公司 | Modified epoxy resin anti-abrasion repair mortar and preparation method thereof |
| CN113292926A (en) * | 2021-04-28 | 2021-08-24 | 常州大学 | Water-based self-repairing epoxy anticorrosive paint and preparation method thereof |
| CN113292926B (en) * | 2021-04-28 | 2021-11-30 | 常州大学 | Water-based self-repairing epoxy anticorrosive paint and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111410907B (en) | 2021-12-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111793420B (en) | Modified polyaspartic acid ester polyurea coating and preparation method thereof | |
| CN107446476B (en) | Special primer-topcoat polyurea protective coating for automobile chassis system and preparation method thereof | |
| CN111410907B (en) | Self-repairing type temperature-resistant wear-resistant polyaspartic acid ester coating and preparation method thereof | |
| JP2013534961A (en) | Aliphatic polyurea coating, process for its production and use thereof | |
| CN110964416B (en) | Weather-resistant wear-resistant polyester resin, powder coating and preparation method thereof | |
| CN114456386B (en) | Reactive epoxy modified organic silicon resin and solvent-free high-temperature-resistant coating | |
| CN102108245A (en) | Waterborne polyester modified epoxy polyurethane anticorrosive paint and preparation method thereof | |
| CN106675133A (en) | High-hardness acrylate-modified polysiloxane resin and coating employing high-hardness acrylate-modified polysiloxane resin as base material | |
| WO2020186912A1 (en) | Powder coating used for household appliance coiled material and preparation method therefor | |
| CN113150634A (en) | High-wear-resistance weather-resistant coating for automobiles and preparation method thereof | |
| CN114032022B (en) | Outer transparent self-repairing coating for photovoltaic transparent backboard and preparation method thereof | |
| CN114921179A (en) | Environment-friendly high-temperature-resistant coating, preparation method and application thereof | |
| CN114196304A (en) | Solvent-free fluorine-modified polyaspartic acid ester multifunctional heat-insulating coating | |
| CN113045919B (en) | Low-temperature curing high-solid epoxy coating and preparation method thereof | |
| CN115124692B (en) | Organic silicon/MDI co-modified epoxy resin and magnesium-rich composite anticorrosive paint thereof | |
| CN115074004A (en) | Water-based organic silicon modified polyester coil steel coating and preparation method thereof | |
| CN113136013A (en) | Acrylic acid modified vinyl organic silicon resin and preparation method thereof | |
| CN102604527A (en) | Preparation method for polyurethane paint primer | |
| CN112391106A (en) | Antifouling self-cleaning sand coating for dustbin and preparation method thereof | |
| CN111269649B (en) | Terrace coating prepared by degrading and recycling materials through polyurethane waste materials and method | |
| CN118256137A (en) | Water-based automobile paint and preparation method thereof | |
| CN118599417A (en) | UV (ultraviolet) curing coating and preparation method thereof | |
| CN118027796A (en) | High-performance water-based paint for outer curtain wall and preparation method thereof | |
| CN117683443A (en) | High weather-resistant powder coating and preparation method thereof | |
| CN118440574A (en) | High-performance water-based paint for photovoltaic industry and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |