CN107793903B - Coating composition for repairing rubber floor cloth and application thereof - Google Patents
Coating composition for repairing rubber floor cloth and application thereof Download PDFInfo
- Publication number
- CN107793903B CN107793903B CN201710880777.5A CN201710880777A CN107793903B CN 107793903 B CN107793903 B CN 107793903B CN 201710880777 A CN201710880777 A CN 201710880777A CN 107793903 B CN107793903 B CN 107793903B
- Authority
- CN
- China
- Prior art keywords
- component polyurethane
- floor cloth
- varnish
- agent
- coating
- 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.)
- Active
Links
Images
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
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
-
- 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
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Paints Or Removers (AREA)
Abstract
The application provides a coating composition for repairing rubber floor cloth and application thereof, wherein the coating comprises a single-component polyurethane base paint and a two-component polyurethane varnish; the single-component polyurethane base coat comprises: 20-40% of self-crosslinking polyurethane resin; 10-20% of hydroxyl acrylic resin; 10-20% titanium dioxide; 5-10% of functional filler; 10-15% of a solvent; 0-15% of an auxiliary agent; color mixing paste; the two-component polyurethane varnish comprises elastic polyurethane resin, hydroxyl acrylic acid dispersoid and an isocyanate curing agent. The coating system has good overall flexibility, excellent outer surface wear resistance and aging resistance, good interlayer adhesion and good matching property with rubber floor cloth. The coating composition is applied to repair the rubber floor cloth, the effect of surface renovation is achieved, and the problems that the overhaul vehicle is enlarged in dismantling range, the overhaul period is prolonged and the waste is caused by replacing the floor cloth due to the fact that the floor cloth is replaced are solved.
Description
Technical Field
The invention relates to the technical field of rubber floor cloth, in particular to a coating composition for repairing rubber floor cloth and application thereof.
Background
With the development of railway carriages and the application of new materials, higher requirements are put forward on the aspects of internal performance, appearance color and patterns, comfort, durability and the like of the railway carriage floor cloth. Compared with the traditional polyvinyl chloride (PVC) plastic floor, the rubber floor cloth has the characteristics of good integrity, comfortable elasticity, superior wear resistance and the like, and can meet the development requirements of railway carriages.
The rubber floor is formed by adding various compounding agents into rubber and processing the mixture through processes such as mixing and the like. According to under passenger train operation state, rubber floor cloth can form the mar in the car, ageing discolour, the light loss, can even harm pit etc. seriously influence passenger's visual effect. Particularly, a public service vehicle has high requirements on the decoration effect in the vehicle, and the maintenance is required for factory repair and section repair each time. The former mode of generally adopting the rubber floor cloth of cutting and changing repairs, but this colour difference that can form new and old floor cloth to need demolish spare part, wallboard etc. in the car because of the change, increased maintenance work load and maintenance cycle, can cause bigger maintenance content because of the change even, also can cause the waste of floor cloth material simultaneously.
Disclosure of Invention
In view of the above, the application provides a coating composition for repairing rubber floor cloth and an application thereof, and by applying the coating composition provided by the invention, the rubber floor cloth can be quickly and conveniently repaired, the effect of surface renovation is achieved, and the waste of floor cloth materials is avoided.
The invention provides a coating composition for repairing rubber floor cloth, which comprises a single-component polyurethane base paint and a two-component polyurethane varnish;
the single-component polyurethane base coat comprises: 20-40 wt% of self-crosslinking polyurethane resin; 10-20 wt% of hydroxyl acrylic resin; 10-20 wt% of titanium dioxide; 5-10 wt% of a functional filler; 10-15 wt% of a solvent; 0-15 wt% of an auxiliary agent; and color mixing paste;
the two-component polyurethane varnish comprises: the polyurethane coating comprises an elastic polyurethane resin, a hydroxy acrylic acid dispersion and an isocyanate curing agent.
Preferably, the average particle size of the functional filler is 0.01-1 micron; the functional filler may be selected from one or more of talc, calcium carbonate, barium sulfate, silica and alumina.
Preferably, the solvent is selected from one or more of aromatic hydrocarbon solvents, ketone solvents and ester solvents.
Preferably, the auxiliary agent is selected from one or more of a dispersing agent, a leveling agent, a defoaming agent, an anti-settling agent, an ultraviolet light absorber, a light stabilizer, a floating color and floating color prevention agent, and a sagging prevention agent.
Preferably, the auxiliary agent comprises: 0.6-1.2 wt% of a dispersant; 0.5 to 2 wt% of carbon black; 0.2-0.5 wt% of a leveling agent; 0.1-0.3 wt% of a defoaming agent; 0.3-0.5 wt% of an anti-settling agent; 0.5 to 1.5 wt% of an ultraviolet absorber; 0.5 to 1.5 wt% of a light stabilizer.
Preferably, in the two-component polyurethane varnish, the isocyanate curing agent is used in an amount such that the molar ratio of hydroxyl groups to isocyanate groups is 1.05/1 to 1.3/1.
Preferably, the two-component polyurethane varnish further comprises an inorganic filler selected from one or more of alumina and silica.
The invention provides a method for repairing rubber floor cloth, which comprises the following steps:
coating and constructing the rubber floor cloth to be repaired by adopting the single-component polyurethane base color paint, and drying;
after drying, coating the constructed rubber floor cloth again by adopting two-component polyurethane varnish, and drying to obtain the repaired rubber floor cloth;
the single-component polyurethane base coat comprises: 20-40 wt% of self-crosslinking polyurethane resin; 10-20 wt% of hydroxyl acrylic resin; 10-20 wt% of titanium dioxide; 5-10 wt% of a functional filler; 10-15 wt% of a solvent; 0-15 wt% of an auxiliary agent; and color mixing paste;
the two-component polyurethane varnish comprises: the polyurethane coating comprises an elastic polyurethane resin, a hydroxy acrylic acid dispersion and an isocyanate curing agent.
Preferably, the using amount of the single-component polyurethane base coat is 150-200 g/m2(ii) a The using amount of the two-component polyurethane varnish is 100-150 g/m2。
Preferably, the one-component polyurethane base paint and the two-component polyurethane varnish are independently dried for more than 9 hours in an environment of not less than 15 ℃.
The present invention provides a coating composition comprising: the single-component polyurethane base paint and the two-component polyurethane varnish. Correspondingly, the coating system related by the invention comprises a bottom coating and a clear paint layer, each coating with good flexibility is selected to form an elastic coating system, and the deformation and the stress of the rubber floor cloth in the using process are buffered by utilizing the recoverable deformation of the system, so that the rubber floor cloth is formed into a whole with basically consistent elastic modulus, and the rubber floor cloth is repaired. The coating system has good overall flexibility, excellent outer surface wear resistance, excellent aging resistance, good interlayer adhesion and good matching property with rubber floor cloth, wherein the aging resistance of the coating system can reach 3000 hours which is far more than 1000 hours of the conventional coating. The construction process related to the invention is simple, mature and feasible, the appearance renovation effect is achieved by brushing the elastic coating on the basis of the original floor cloth, and the problems of enlarged maintenance vehicle dismantling range, prolonged maintenance period and waste caused by replacing the floor cloth are avoided. Through the application of the technology, the repairing method can quickly and conveniently meet the requirement of repairing the rubber floor cloth for the maintenance of the official vehicles.
Drawings
FIG. 1 is a schematic view of a film forming process of an aqueous single-component polyurethane paint according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart of a process for producing a base paint or varnish according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a film forming process of two-component waterborne polyurethane according to an embodiment of the present invention;
FIG. 4 is a view showing the protection of the non-coated portion in the embodiment of the present invention;
FIG. 5 illustrates the protection of the floor covering interface according to an embodiment of the present invention;
FIG. 6 shows the state of the grinding chip and the ground state after the base paint is dried in the embodiment;
FIG. 7 shows the effect state after varnish construction in the example;
FIG. 8 is a comparison of the real object before and after coating in the examples;
FIG. 9 shows the results of the folding pattern test in the examples;
fig. 10 shows the results of the hammer mode test in the example.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a coating composition for repairing rubber floor cloth, which comprises a single-component polyurethane base paint and a two-component polyurethane varnish;
the single-component polyurethane base coat comprises: 20-40 wt% of self-crosslinking polyurethane resin; 10-20 wt% of hydroxyl acrylic resin; 10-20 wt% of titanium dioxide; 5-10 wt% of a functional filler; 10-15 wt% of a solvent; 0-15 wt% of an auxiliary agent; and color mixing paste;
the two-component polyurethane varnish comprises: the polyurethane coating comprises an elastic polyurethane resin, a hydroxy acrylic acid dispersion and an isocyanate curing agent.
The elastic coating system with excellent interlayer adhesion is formed by selecting the elastic coating paint with better flexibility, can be used for repairing rubber floor cloth, and can quickly and conveniently achieve the effect of surface renovation.
The coating composition provided by the invention comprises a one-component polyurethane base coat which forms a base coat. The single-component polyurethane base paint comprises self-crosslinking polyurethane resin; typical polyurethane film-forming mechanisms and processes include: filling process: the solvent is volatilized, and the particles approach each other to reach a dense filling state; and (3) fusion process: the surface layer of the particles is damaged, and the particles are contacted with each other; and (3) diffusion process: molecular chains among dispersion particles are mutually diffused to form a homogeneous film with certain mechanical property; the film forming ability of a dispersion is inversely proportional to the particle shear modulus of the dispersion and the particle size of the dispersion.
The invention preferably adopts the water-based single-component polyurethane base paint, the film forming process is shown as figure 1, and figure 1 is a schematic diagram of the film forming process of the water-based single-component polyurethane paint in the embodiment of the invention. In fig. 1, the first part is: the base material is provided with water and latex particles dispersed in the base material, and the water is volatilized; the second part is: evaporating water, and enabling latex particles to approach each other to form a close packing state; the third part is that: the water is further evaporated and condensed to form a hexagonal structure which is mainly a physical film; the fourth part is: further coagulating, starting the latex particles to react, and forming a film by physical film forming and oxidation drying; the fifth part is that: a homogeneous and complete coating film is formed on the surface of the substrate.
The single-component polyurethane base paint is prepared by mixing high-performance self-crosslinking polyurethane resin, pigment, an auxiliary agent and the like according to a certain proportion. Specifically, the single-component polyurethane base coat comprises: 20-40 wt% of self-crosslinking polyurethane resin; 10-20 wt% of hydroxyl acrylic resin; 10-20 wt% of titanium dioxide; 5-10 wt% of a functional filler; 10-15 wt% of a solvent; 0-15 wt% of an auxiliary agent; and color-adjusting pastes.
The single-component polyurethane base paint preferably comprises 25-35 wt% of self-crosslinking polyurethane resin; the self-crosslinking means that after polyurethane is formed into a film, chemical reaction can be automatically carried out to realize crosslinking, the crosslinking degree of the film is improved, and the performance of the paint film is improved. In the embodiment of the invention, the self-crosslinking polyurethane resin is introduced with drying oil fatty acid and a polyalkoxy silicon unit; the prepared polyurethane emulsion has small particle size, and the particle size can be adjusted within a wide range (0.03-100.00 mu m). Preferably, the self-crosslinking polyurethane resin can respectively undergo auto-oxidation crosslinking and hydrolytic condensation reaction to form a crosslinking network after film formation; the polyurethane coating can be made into a paint film with excellent hand feeling. In addition, the one-component polyurethane coating has the advantages of convenient construction and no storage and gelling danger.
The single-component polyurethane base coat provided by the invention is self-crosslinked at normal temperature, dried and formed into a film, is non-toxic and harmless, and is green and environment-friendly. Also, the present invention preferably uses water as a diluent, low VOC, low odor. The single-component polyurethane base paint has excellent adhesive force, good elasticity and covering power, and is widely applicable to decoration and protection of floors with high decorative requirements in the industrial field.
In the single-component polyurethane base paint, the main film-forming substance is high-performance self-crosslinking polyurethane resin. The polyurethane resin is formed by reacting polyisocyanates with polyols and the like containing active hydrogen atoms and groups, and is commonly used as diisocyanate in actual production, and the structure of the diisocyanate is as follows: o ═ C ═ N-R-N ═ C ═ O.
Where NCO is called isocyanate group or isocyanate group, the reaction of a diisocyanate with a polyol to form a high polymer is neither condensation nor polymerization, but between them, called stepwise polymerization, in which the active hydrogen atom in one molecule is transferred to another molecule. No by-product is separated out during the curing process, and the volume shrinkage is small.
The polyurethane resin paint of the invention has the characteristics that: (1) has strong wear resistance and can be widely used as floor paint, deck paint and the like. (2) Has good protection and decoration. (3) Has strong adhesive force to various substances. (4) The elasticity of the paint film can be adjusted according to the needs: it can be adjusted from an extremely hard coating to a flexible, resilient coating. (5) Has comprehensive chemical resistance, acid resistance, alkali resistance and salt resistance, and is suitable for chemical anticorrosive paint. (6) The paint can be dried at high temperature and also can be solidified at low temperature, such as 0 ℃; (7) can be made into low temperature (-40 ℃) resistant varieties and high temperature resistant varieties. (8) Can automatically apply tin in the melted soldering tin. (9) Can be matched with polyester, polyether, epoxy, alkyd, polyacrylate, vinyl chloride-vinyl acetate copolymer resin, coal tar pitch, drying oil and the like to prepare paint, and has the advantages of extremely many varieties, various performances and wide application range.
In the primer layer of some embodiments of the invention, the normal-temperature drying type elastic polyurethane resin is selected, and on the basis of reducing drying energy consumption, stronger permeability and adhesive force are ensured on the surface of the base material. Meanwhile, the invention takes flexible resin as an auxiliary film forming material, so that the paint film has good flexibility and elasticity. Therefore, the single-component polyurethane base coat comprises 10-20 wt% of hydroxyl acrylic resin which is an auxiliary film forming material.
The single-component polyurethane base coat disclosed by the invention has self-leveling property on various substrates, so that a paint film has excellent covering capability. An excellent curing system is adopted, a paint film is rapidly crosslinked and cured, and the cured paint film is non-toxic and free of pungent smell; the construction time is short, and the process requirement is simple; the floor protection device is suitable for floor protection used in various environments and has strong tolerance.
Besides the film-forming material, the single-component polyurethane base paint also comprises pigments and fillers. Among the several major factors affecting pigment performance are: 1) size of pigment particles: most pigments have an average particle size of 0.01 to 1.0 μm, but extender pigments have an average particle size of 50 μm. The particle size is small, the dispersion degree is large, the area of reflected light is large, and the covering power is strong; small grain size and strong tinting strength. 2) Shape of the particles: the tumor-shaped particles, titanium white and lithopone have good fluidity. Needle-shaped particles, zinc white and talcum powder have the functions of strengthening and improving the hardness and strength. The flat particles, such as metallic pigments, enhance the barrier effect. 3) Specific surface area of pigment particles: the surface area of the pigment per unit mass is called specific surface area, is inversely proportional to the particle diameter, and is large, and the hiding power and the tinting strength are good. 4) Surface treatment of pigment particles: the presence of the surfactant can control the processes of supersaturation, solubilization, nucleation, and the like. The organic coating (namely wrapped by the surfactant) exists on the surface of the inorganic pigment, so that the wetting effect can be improved, the dispersibility and the stability of the pigment can be improved, and the leveling property of the coating can be changed. The light resistance, acid and alkali resistance and solvent resistance of the paint can be improved by surfactant treatment.
In order to meet the requirements of filling property, easy polishing, elasticity and the like of the polyurethane base paint, improve the application property and mechanical property of the paint and reduce the cost, a large amount of work from theory to practice is carried out, the invention adopts titanium dioxide and functional filler with a certain proportion, and the pigment and the filler meet the technical requirements. Namely, the one-component polyurethane base paint comprises: 10-20 wt% of titanium dioxide and 5-10 wt% of functional filler. In embodiments of the present invention, the functional filler may be selected from one or more of talc, calcium carbonate, barium sulfate, silica and alumina, such as silica-alumina based cenospheres. In addition, color fillers such as coloring pigments and the like may be used. In the embodiment of the present invention, it is preferable to use an ultra-fine functional filler, and the average particle size thereof may be 0.01 to 1 μm.
In the invention, the single-component polyurethane base paint comprises 10-15 wt% of solvent. The solvent is an important component in the formulation of solvent-borne coatings, and is used not only to dissolve the resin and reduce viscosity to improve processability and workability, but also to affect the adhesion, corrosion resistance, outdoor durability, and film appearance (foaming, sagging, leveling, etc.) of the coating, and thus, the performance of one or more aspects of the coating can be improved by the choice of solvent.
In the production of coatings, it is not only required that the resin be soluble in the solvent, but also that the lower the viscosity of the resin solution for the same solids content, the better. Thus, when the same construction viscosity is achieved, the solid content of the paint liquid is higher, the construction efficiency can be improved, the amount of the solvent volatilized into the atmosphere is smaller, and meanwhile, the drying speed of the paint liquid is high.
The volatilization rate of the solvent is an important factor influencing the quality of the coating film, and if the solvent is volatilized too fast, the coating film can not be leveled and can not fully wet the base material, so that good adhesive force can not be generated; if the solvent is volatilized too slowly, not only can the curing be carried out for a long time, but also the coating film can be sagged or flowed to influence the construction quality. Through repeated tests, preferably, one or more of aromatic hydrocarbons, ketones and esters with slight taste, good dissolving power and good construction effect are selected as a solvent of the polyurethane primer; more preferably, the present invention employs a mixed solvent, for example, xylene: butyl acetate: propylene glycol methyl ether acetate ═ 3: 2: 2 (volume ratio).
The single-component polyurethane base coat comprises 0-15 wt% of an auxiliary agent; the invention preferably adopts the auxiliary agent to further improve the paint film performance and the processing performance, and the auxiliary agent can also not be used.
The auxiliary agent is an additive used for helping to eliminate the defects of orange peel, floating color and hair, bubbles, shrinkage cavities, needle holes, sagging and the like which are usually generated on the surface of a coating film, and comprises a leveling agent, a floating color and hair preventing agent, a defoaming agent, a sagging preventing agent and the like. On the other hand, the auxiliary agent can also comprise additives such as a dispersing agent, an anti-settling agent, an ultraviolet light absorber, a light stabilizer, a drier and the like. In the present invention, the auxiliary is preferably selected from one or more of a dispersant, a leveling agent, a defoaming agent, an anti-settling agent, an ultraviolet light absorber, a light stabilizer, an anti-blooming agent, and a sagging inhibitor.
The invention is not particularly limited to the specific types of the above-mentioned auxiliaries, and the like, and the conventional ones in the art can be adopted. Illustratively, the leveling agent may be selected from an acrylic leveling agent or an organic silicon leveling agent, such as leveling agent OL-17 of bayer company, germany, and the like. The defoaming agent can be a silicon defoaming agent, such as defoaming agents BYK-065, BYK-066N and the like of Bick, Germany. The dispersant is preferably dispersant BYK-110; the anti-settling agent is BYK-410 and the like. Specifically, the auxiliary agent of the present invention preferably includes: 0.6-1.2 wt% of a dispersant; 0.5 to 2 wt% of carbon black; 0.2-0.5 wt% of a leveling agent; 0.1-0.3 wt% of a defoaming agent; 0.3-0.5 wt% of an anti-settling agent; 0.5 to 1.5 wt% of an ultraviolet absorber; 0.5 to 1.5 wt% of a light stabilizer. The paint can also comprise 0.01-0.02 wt% of polyurethane paint drier, and the paint can be prepared by adopting conventional products. Wherein, the carbon black can play a role in adjusting color and belongs to a pigment auxiliary agent. In addition, the base color paint also comprises a proper amount of color mixing paste for properly adjusting the color.
In the embodiment of the invention, a production process of the single-component polyurethane base paint is shown in fig. 2, and fig. 2 is a schematic flow chart of the production process of the base paint or the varnish in the embodiment of the invention. In fig. 2, in the embodiment of the present invention, the raw materials such as resin, pigment, filler, solvent, and auxiliary agent are premixed, ground and painted with a paste under stirring, then the resin, solvent, and auxiliary agent are added to mix the paint, and after filtering, on one hand, the product is obtained by detection, and on the other hand, waste disposal is performed.
The performance indexes of the polyurethane base color paint product obtained by the embodiment of the invention are as follows: purplish red viscous liquid; the outflow time is more than or equal to 20s, the surface drying time is less than or equal to 2h, and the actual drying time is less than or equal to 24 h; the bending property of the obtained paint film is less than or equal to 1mm, the result of the lattice test is less than or equal to 1 grade, and the impact resistance is more than or equal to 50 cm.
The coating system comprises a base coat and a clear coat layer, wherein the clear coat layer is formed by the two-component polyurethane varnish contained in the coating composition. The two-component polyurethane varnish is elastic floor varnish and comprises elastic polyurethane resin, hydroxyl acrylic acid dispersoid and isocyanate curing agent. The film forming and crosslinking mechanism of the two-component polyurethane elastic floor varnish coating is as follows:
the film forming mechanism of the two-component polyurethane is greatly different from that of common polymer emulsion such as acrylic emulsion, and is not completely the same as that of solvent type polyurethane. The solidification film-forming of the common emulsion is a single physical process, the glass transition temperature of dispersed phase particles is low, a compact and packed structure is formed after the solvent is volatilized, and the emulsion is condensed into a film under the action of capillary pressure. In the solvent type polyurethane system, the hydroxyl-containing resin and the curing agent are both dissolved in an organic solvent in a molecular form, the formed system is homogeneous, the curing reaction is carried out among molecules, so that the curing reaction is relatively completely carried out, and the formed coating film is also homogeneous.
In embodiments of the present invention, the two-component polyurethane is a multiphase film. Firstly, when most of water is evaporated, emulsion particles are contacted with each other to form a closely packed structure, and residual water and curing agent molecules are positioned in gaps of the emulsion particles. As the water further evaporates, the emulsion particles begin to coagulate forming a more compact hexagonal arrangement. Meanwhile, the molecules of the curing agent diffuse to the interface of the emulsion particles and the inside of the emulsion particles to generate crosslinking curing reaction.
The invention preferably adopts the water-based two-component polyurethane varnish, the film forming mechanism of the water-based two-component polyurethane varnish is shown in figure 3, and figure 3 is a schematic diagram of the film forming process of the two-component water-based polyurethane in the embodiment of the invention. In fig. 3, the first part is: the base material is provided with water and a curing agent, and latex particles dispersed in the base material, and the water is volatilized; the second part is: evaporating water, and enabling latex particles to approach each other to form a close packing state; the third part is that: the water is further evaporated and condensed to form a hexagonal structure which is mainly a physical film; the fourth part is: further coagulation, the latex particles and the curing agent begin to react, which is mainly a chemical film; the fifth part is that: a homogeneous and completely cured coating film is formed on the surface of the substrate.
The chemical reaction of the two-component polyurethane coating is complex, and besides the chemical reaction of-OH and-NCO, other chemical reactions also occur, such as:
(1) reacting with alcohol compounds to generate a product of carbamate:
(2) reaction of isocyanates with amines to form ureas:
(3) reaction of isocyanates with urea to form biurets:
(4) reaction of isocyanate with water:
reaction rate: amine > alcohol/water > acid due to R-NH2The reaction with R-NCO is faster than with water, so the reaction can be written as:
R-NCO+R′-NCO+H2O→RHNCONHR′+CO2(5)；
(5) reaction of isocyanates with urethanes to give allophanates:
(6) reaction of isocyanate with acid:
in the examples of the present invention, the film forming mechanism of the aqueous two-component polyurethane is related to the co-coagulation mechanism of the particles of the thermoplastic polymer dispersion and the film forming mechanism of the crosslinking reaction of the thermosetting polymer solution, and during the film forming process, there are ① volatilization of volatile matter (solvent, water), ② co-coagulation of polyol and polyisocyanate particles, ③ reaction of polyisocyanate and water, and ④ reaction of polyol and polyisocyanate.
The polyurethane elastic floor varnish is prepared by mixing a hydroxyl acrylic acid dispersoid and an isocyanate curing agent according to a certain proportion. Specifically, the polyurethane floor varnish is prepared by cold-splicing hydroxy acrylic acid dispersoid and elastic polyurethane and mixing a flexible water-based isocyanate curing agent according to a certain proportion, and a paint film has certain elasticity and high wear resistance.
The two-component polyurethane varnish is a two-component special coating taking polyurethane as a base material, is suitable for the temperature-resistant, burning-resistant, solvent-resistant, wear-resistant and mildew-resistant anticorrosion protection of various materials, has excellent chemical resistance, and can resist chemical products such as cleaning agents, engine oil, kerosene and the like for a long time. The two-component polyurethane varnish comprises a hydroxy acrylic acid dispersion; the invention takes flexible resin as an auxiliary film forming material, and the paint film has good flexibility, elasticity, wear resistance and moderate antiskid coefficient. The product has self-leveling performance on various substrates, so that a paint film has excellent covering capacity. According to the invention, an excellent curing system is adopted, a paint film is rapidly crosslinked and cured, and the cured paint film is non-toxic and free of pungent smell; the construction time is short, the process requirement is simple, the floor protection is suitable for being used in various environments, and the weather resistance is strong.
The two-component polyurethane varnish disclosed by the invention is non-toxic, harmless, green and environment-friendly. Also, the present invention preferably uses water as a diluent, low VOC, low odor. The two-component polyurethane varnish has excellent adhesion, excellent flexibility, excellent water resistance, oil resistance and solvent resistance, and is widely applied to decoration and protection of indoor and outdoor elastic floors with high decorative requirements in the industrial field.
The two-component polyurethane varnish comprises an isocyanate curing agent; isocyanate group-N ═ C ═ O can undergo a crosslinking reaction with OH at room temperature, and is a curing agent at room temperature. Regarding the curing reaction ratio, in the two-component polyurethane varnish, the isocyanate curing agent is used in an amount such that the molar ratio of hydroxyl groups to isocyanate groups (OH/NCO) is 1.05/1-1.3/1. Some embodiments of the invention determine the construction ratio as the main agent: the curing agent was 4:1 (weight ratio). The two-component polyurethane varnish preferably further comprises an inorganic filler, which may be selected from one or more of alumina and silica. In the formula design of the varnish layer, the molar ratio of isocyanate groups to hydroxyl groups is properly increased, and inorganic fillers such as alumina and silica are added, so that the varnish layer has excellent wear resistance, and coordinated flexibility and hardness, can reduce the damage of the coating layer caused by wear, and is a wear-resistant elastic polyurethane varnish.
The production process of the varnish is not particularly limited in the invention, and the production process flow can also refer to fig. 2. The performance indexes of the polyurethane elastic floor varnish product obtained in the embodiment of the invention are as follows: a white milky liquid; the outflow time is more than or equal to 20s, the surface drying time is less than or equal to 4h, and the actual drying time is less than or equal to 24 h; the bending property of the obtained paint film is less than or equal to 2mm, the cupping test result is more than or equal to 4mm, the grid test result is less than or equal to 1 grade, and the impact resistance is more than or equal to 50 cm; the pot life is more than or equal to 4h, and the mass ratio of the main agent to the curing agent can be 7/1.
In the invention, the base paint and the varnish have self-leveling performance on various substrates, so that the paint film has excellent covering capacity and elasticity. Under the matching of the elastic polyurethane bottom coating and the wear-resistant elastic polyurethane varnish layer, the aging resistance of the coating system can reach 3000 hours, which is far more than 1000 hours of the conventional coating; has better interlayer adhesion, can keep stronger cohesion of the whole system even if the coating is damaged, and prevents the damage from expanding. The invention adopts an excellent curing system, the paint film is quickly crosslinked and cured, and the cured paint film is nontoxic and has no pungent smell. In addition, the invention has short construction time and simple process requirement, is suitable for floor protection used in various environments and has strong tolerance.
The invention provides a method for repairing rubber floor cloth, which comprises the following steps: coating and constructing the rubber floor cloth to be repaired by adopting the single-component polyurethane base color paint, and drying; after drying, coating the constructed rubber floor cloth with two-component polyurethane varnish again, and drying to obtain the repaired rubber floor cloth;
the single-component polyurethane base coat comprises: 20-40 wt% of self-crosslinking polyurethane resin; 10-20 wt% of hydroxyl acrylic resin; 10-20 wt% of titanium dioxide; 5-10 wt% of a functional filler; 10-15 wt% of a solvent; 0-15 wt% of an auxiliary agent; and color mixing paste;
the two-component polyurethane varnish comprises: the polyurethane coating comprises an elastic polyurethane resin, a hydroxy acrylic acid dispersion and an isocyanate curing agent.
The invention selects the elastic coating with better flexibility to form an elastic coating system with excellent interlayer adhesion, and after the surface of the rubber floor cloth is treated, the rubber floor cloth is repaired by adopting a coating mode, so that the appearance is mainly improved, and the problems of enlarged maintenance vehicle dismantling range, prolonged maintenance period and waste caused by floor cloth replacement are avoided. Through the application of the technology, the repair of the rubber floor cloth for the inspection and repair of the official vehicles can be quickly and conveniently met.
The contents of the base paint and the varnish of the invention are as described above, and are not described herein again. The rubber floor cloth to be repaired is mainly subjected to appearance change and repair and can be as follows: the rubber floor cloth has the appearance of scratches, aging discoloration, light loss, even damaged pits and the like. The embodiment of the invention firstly polishes and cleans the base material of the rubber floor cloth to be repaired to clean the surface, and the rubber floor cloth is dried without moisture; the present invention also provides conventional perimeter protection for the floor covering.
Then, the embodiment of the invention adopts the coating system for construction. The environmental conditions for repairing construction in the embodiment of the invention comprise: normal temperature, preferably 20-30 ℃; the relative humidity is more than or equal to 20 percent and less than or equal to 60 percent. The coating construction mode can be spraying, brushing and rolling coating, and preferably the rolling coating is adopted. In the embodiment of the invention, the dosage of the single-component polyurethane base coat is generally 150-200 g/m2(ii) a The wet film thickness of the paint film is (80-100) mu m, and the dry film thickness is (40-60) mu m. The using amount of the two-component polyurethane varnish is generally 100-150 g/m2(ii) a The wet film thickness of the paint film is (80-100) mu m, and the dry film thickness is (50-70) mu m. The dry film thickness per roll coating can be (30-40) μm; fitting for mixingThe total thickness of the dry film of the sleeve system is more than or equal to 120 mu m.
The drying time in some embodiments of the invention is: when the thickness of the dry film is 30-40 mu m, the film does not stick dust within 2 hours and is hard dried within 24 hours; the product performance reaches the best after 7 days. In winter, the temperature is low, and the drying time is slightly prolonged. Preferably, the one-component polyurethane base paint and the two-component polyurethane varnish are independently dried for more than 9 hours in an environment of not less than 15 ℃. Some embodiments of the invention are cured under natural conditions and naturally dried for more than 16 hours in an environment of not less than 15 ℃. In other embodiments of the present invention, the temperature is low or the drying time is shortened, the drying process may be performed for 1-2 hours in an environment of heating to 40-60 ℃ and then the drying process may be performed for 8-10 hours. In addition, the construction interval between the base paint and the varnish in the embodiment of the invention is more than or equal to 24 hours.
And after the repairing construction is finished, detecting the performance of the repaired floor cloth. The invention achieves the effect of surface renovation by brushing the elastic coating on the basis of the original floor cloth; the construction process is simple, mature and feasible. The invention shortens the repairing process, reduces the workload, avoids the waste of the floor cloth, and is a quick and convenient repairing method.
For further understanding of the present application, the coating composition for repairing a rubber floor cloth and its use provided herein are specifically described below with reference to examples.
Examples
The composition of the one-component polyurethane basecoat used in this example is shown in table 1:
TABLE 1 basic composition of the base paints in the examples
All components of the invention are general products; the silicon-aluminum-based hollow microsphere is a standard physical spherical silicon-aluminum oxide ceramic powder material, and the particle size of the silicon-aluminum-based hollow microsphere is 1 mu m.
Mixing solvent: xylene: butyl acetate: propylene glycol methyl ether acetate ═ 3: 2: 2 (volume ratio). T-12 is polyurethane paint drier, dibutyl tin dilaurate C32H64O4Sn。
The performance indexes of the polyurethane base coat product are shown in Table 2:
table 2 Performance indices of the polyurethane basecoat products
The polyurethane floor varnish is prepared by cold-splicing hydroxy acrylic acid dispersoid 1753 and elastic polyurethane 168SS-80 according to the mass ratio of 1:2 and mixing a flexible water-based isocyanate curing agent (Bayer Desmodur N3390 BA resin) according to a certain proportion; wherein the isocyanate curing agent is used in such an amount that the molar ratio of hydroxyl groups to isocyanate groups (OH/NCO) is 1.1/1. The performance indices of the varnish are shown in table 3:
table 3 Properties of the polyurethane varnish products in the examples
The repair process flow of the embodiment is as follows: grinding, cleaning and protecting → floor drying → priming paint preparation → corner repair → priming paint construction → drying for 24 hours → sanding → varnish preparation → corner repair → varnish construction → drying for 24 hours → protection removal. The specific contents are as follows:
substrate treatment: removing pollutants such as dust, oil stain and the like on the floor by lint-free cloth, and then wiping the floor by a diluent at least for 1-2 times until the surface of the substrate is clean and dry without moisture, so that construction can be carried out.
Peripheral protection: confirming the part to be constructed, and protecting the table legs by using adhesive tapes (see figure 4); the periphery of the vehicle body is protected from the connection with the floor cloth (see fig. 5).
Preparing a coating:
preparation of A, B components before use: and opening the cover of the component A polyurethane paint barrel, and uniformly stirring. The B component curing agent (Bayer Desmodur N3390 BA resin) was shaken up. It is especially noted that after the B component curing agent is taken out, the curing agent is covered immediately to prevent the curing agent from losing efficacy after contacting with moisture in the air for a long time. Mixing ratio: (1) the weight ratio of the rose bengal polyurethane base coat is 5:1 of main agent A and curing agent B; (2) the weight ratio of the elastic polyurethane floor paint is 5:1 of the main agent A and the curing agent B. The main agent and the curing agent are mixed according to the proportion, fully stirred to be uniform, placed to eliminate bubbles generated during mixing for about 10 minutes, and then roll-coated. Wherein, the mixture is diluted to proper viscosity by special diluent (prepared by mixing xylene, butyl acetate and propylene glycol monomethyl ether acetate in a volume ratio of 3: 2: 2). The working life is as follows: summer 3 hours, winter 4 hours.
The construction mode is roller coating; the tool comprises: lint-free cloth, abrasive paper, an electronic scale, a wallpaper cutter, a coating No. 4 cup, a stirrer, a high-quality oil brush and a high-quality rolling brush. The thickness of the dry film is 30-40 mu m in each rolling coating; the total thickness of the dry film of the matching system is more than or equal to 120 mu m. The construction interval between the rose-red polyurethane base paint and the elastic polyurethane floor paint is 24 hours; after the construction is finished, the tool is immediately cleaned by using a special diluent, so that the tool waste caused by the curing of the coating is avoided.
The using amount of the polyurethane base color paint is 150-200 g/m2The wet film thickness of the paint film is (80-100) mu m, and the dry film thickness is (40-60) mu m. The dosage of the polyurethane elastic floor varnish is 100-150 g/m2The wet film thickness of the paint film is (80-100) mu m, and the dry film thickness is (50-70) mu m. Curing under natural condition, and naturally drying at normal temperature for 24 h.
Note that:
1 before the coating film is not dried, the coating film is not touched and stepped so as to avoid staining or damaging the appearance of the coating film.
2, the amount of the coating is not increased, so that waste is avoided; the coatings A and B are mixed and used up as soon as possible, and the service life is not prolonged.
3, the constructor needs to make personal protection required by spraying and uses special working clothes, gloves, glasses and the like; keeping the environment ventilated.
And 4, taking away the plastic film and the adhesive tape for protecting the periphery in time after the paint film is dried so as to prevent the paint film from being damaged when the plastic film and the adhesive tape for protecting are taken out after the paint film is completely dried.
The non-coated part is well protected, and no polishing damage or paint contamination exists. And finishing the repairing construction, and comparing the performance detection results before and after the floor cloth is repaired.
After the base paint is dried, the base paint is polished by a No. 240 abrasive disc, the drying performance of the base paint is good, and no sand paper is adhered, as shown in FIG. 6, FIG. 6 shows the polishing abrasive disc state (left) in the embodiment and the polishing state (right) after the base paint is dried.
After varnish construction, the surface coating is uniform, a paint film is flat and smooth, and the conditions of accumulation, brushing marks, missing coating, shrinkage cavities, coarse particles and the like do not exist, as shown in fig. 7, the effect state after varnish construction in the embodiment is shown in fig. 7, after the varnish is dried, a sample plate is checked, the drying performance is good, when the sample plate is tested in a folding mode, a bending mode and the like, the paint film does not have defects such as cracking, falling and the like, when the surface of the floor leather is hammered by using an inspection hammer tip, the coating does not fall off or crack, after the varnish is dried, the original floor cloth pattern is shown and basically consistent with the color of the original floor cloth, the physical condition is shown in fig. 8, fig. 9 and fig. 10, in the upper portion of fig. 8, the upper portion is in a brushing state, the coating is composed of base paint ① + varnish ②, and the lower portion is in an original state, after the brushing, the pattern is shown.
After the rubber floor cloth is treated, the elastic coating on the surface of the floor cloth does not have the quality problems of cracking, wrinkling, falling and the like through the application of one-section paint repair of a high-grade passenger car, and the requirements of beauty and comfort of the high-grade passenger car are met.
The rubber floor cloth is made of polyurethane, and the polyurethane is made of polyurethane or polyurethane with different resin contents and proportions, so that the elasticity of the rubber floor cloth can not meet the elasticity requirement of the rubber floor cloth.
From the above, the paint film of the present invention has good flexibility and elasticity, and the deformation and stress of the rubber floor cloth can be buffered by the system recoverable deformation during the use process, so that the whole with basically consistent elastic modulus is formed. According to the invention, an excellent curing system is adopted, a paint film is rapidly crosslinked and cured, and the cured paint film is non-toxic and free of pungent smell; the construction time is short, and the process requirement is simple. The aging resistance of the coating system can reach 3000h, which is far more than 1000h of the conventional coating. The construction process related by the invention is simple, mature and feasible, and the effect of surface renovation is achieved by brushing the elastic coating on the basis of the original floor cloth. In addition, the invention has the advantages of shortening the repair process, reducing the workload and avoiding the waste of the floor cloth.
The above description is only a preferred embodiment of the present invention, and it should be noted that various modifications to these embodiments can be implemented by those skilled in the art without departing from the technical principle of the present invention, and these modifications should be construed as the scope of the present invention.
Claims (9)
1. A coating composition for repairing rubber floor cloth comprises a single-component polyurethane base coat and a two-component polyurethane varnish;
the single-component polyurethane base coat comprises: 20-40 wt% of self-crosslinking polyurethane resin; 10-20 wt% of hydroxyl acrylic resin; 10-20 wt% of titanium dioxide; 5-10 wt% of a functional filler; 10-15 wt% of a solvent; 0-15 wt% of an auxiliary agent; and color mixing paste;
the two-component polyurethane varnish comprises: elastomeric polyurethane resin, hydroxyl acrylic dispersion and isocyanate curing agent: the hydroxyl acrylic acid dispersoid and the elastic polyurethane resin are cold spliced according to the mass ratio of 1: 2; in the two-component polyurethane varnish, the molar ratio of hydroxyl groups to isocyanate groups is 1.05/1-1.3/1 by using the amount of the isocyanate curing agent.
2. The coating composition of claim 1, wherein the functional filler has an average particle size of 0.01 to 1 μm.
3. The coating composition of claim 1, wherein the solvent is selected from one or more of aromatic hydrocarbon solvents, ketone solvents, and ester solvents.
4. The coating composition of claim 1, wherein the adjuvant is selected from one or more of a dispersant, a leveling agent, a defoamer, an anti-settling agent, an ultraviolet light absorber, a light stabilizer, an anti-blooming agent, and a sag preventive agent.
5. The coating composition of claim 1, wherein the adjuvant comprises: 0.6-1.2 wt% of a dispersant; 0.5 to 2 wt% of carbon black; 0.2-0.5 wt% of a leveling agent; 0.1-0.3 wt% of a defoaming agent; 0.3-0.5 wt% of an anti-settling agent; 0.5 to 1.5 wt% of an ultraviolet absorber; 0.5 to 1.5 wt% of a light stabilizer.
6. The coating composition of claim 1, wherein the two-component polyurethane varnish further comprises an inorganic filler selected from one or more of alumina and silica.
7. A method for repairing a rubber floor cloth, comprising the steps of:
coating and constructing the rubber floor cloth to be repaired by adopting the single-component polyurethane base color paint, and drying;
after drying, coating the constructed rubber floor cloth again by adopting two-component polyurethane varnish, and drying to obtain the repaired rubber floor cloth;
the single-component polyurethane base coat comprises: 20-40 wt% of self-crosslinking polyurethane resin; 10-20 wt% of hydroxyl acrylic resin; 10-20 wt% of titanium dioxide; 5-10 wt% of a functional filler; 10-15 wt% of a solvent; 0-15 wt% of an auxiliary agent; and color mixing paste;
the two-component polyurethane varnish comprises: an elastomeric polyurethane resin, a hydroxyacrylic acid dispersion and an isocyanate curing agent; the hydroxyl acrylic acid dispersoid and the elastic polyurethane resin are cold spliced according to the mass ratio of 1: 2; in the two-component polyurethane varnish, the molar ratio of hydroxyl groups to isocyanate groups is 1.05/1-1.3/1 by using the amount of the isocyanate curing agent.
8. The repairing method according to claim 7, wherein the amount of the one-component polyurethane base coat is 150-200 g/m2(ii) a The using amount of the two-component polyurethane varnish is 100-150 g/m2。
9. The repair method according to claim 7, wherein the one-component polyurethane base coat and the two-component polyurethane varnish are independently dried in an environment of not less than 15 ℃ for more than 9 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710880777.5A CN107793903B (en) | 2017-09-26 | 2017-09-26 | Coating composition for repairing rubber floor cloth and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710880777.5A CN107793903B (en) | 2017-09-26 | 2017-09-26 | Coating composition for repairing rubber floor cloth and application thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107793903A CN107793903A (en) | 2018-03-13 |
| CN107793903B true CN107793903B (en) | 2020-01-14 |
Family
ID=61532427
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710880777.5A Active CN107793903B (en) | 2017-09-26 | 2017-09-26 | Coating composition for repairing rubber floor cloth and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107793903B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108690480A (en) * | 2018-06-25 | 2018-10-23 | 恒昌涂料（惠阳）有限公司 | A kind of aqueous double-component finishing coat of the low curing agent of high glaze quick-drying and its application |
| CN110105862A (en) * | 2019-06-11 | 2019-08-09 | 浙江伟星实业发展股份有限公司 | A kind of spray painting major ingredient and rain and dew paint for button |
| CN112474232A (en) * | 2020-11-24 | 2021-03-12 | 唐山市祥聿铁路配件有限公司 | Urban rail vehicle floor cloth repairing process |
| CN112792620A (en) * | 2020-12-31 | 2021-05-14 | 成都中车四方轨道车辆有限公司 | Process for repairing rubber cloth of railway train carriage as new as old |
| CN113386808A (en) * | 2021-06-04 | 2021-09-14 | 唐山万协铁路配件有限公司 | Method for repairing railway vehicle floor cloth |
| CN113337199A (en) * | 2021-07-20 | 2021-09-03 | 山东七维新材料有限公司 | Coating for rubber base material and preparation method thereof |
| CN113737531B (en) * | 2021-09-26 | 2023-10-20 | 深圳市联星服装辅料有限公司 | Dipping liquid, aqueous polyurethane dipping polyester rope and preparation method thereof |
| CN113914110A (en) * | 2021-10-19 | 2022-01-11 | 江西三越新材料有限公司 | Oily anti-floating color white slurry |
| CN116769389A (en) * | 2023-06-06 | 2023-09-19 | 中国化工株洲橡胶研究设计院有限公司 | Water-based scratch-resistant protective coating and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102051112A (en) * | 2011-01-18 | 2011-05-11 | 惠州市长润发涂料有限公司 | Aqueous double-component polyurethane varnish and preparation method of aqueous double-component polyurethane varnish |
| CN103567131A (en) * | 2013-10-21 | 2014-02-12 | 黄宣斐 | Method for coating surface of plastic |
| CN104379682A (en) * | 2012-06-28 | 2015-02-25 | 巴斯夫涂料有限公司 | Method of forming a multi-layer paint film |
| CN104449233A (en) * | 2014-12-10 | 2015-03-25 | 成都拜迪新材料有限公司 | Coating of water-based paint applied to engineering machinery product |
| CN205856373U (en) * | 2016-03-21 | 2017-01-04 | 广东达尔新型材料有限公司 | A kind of aqueous polyurethane mortar terrace coating |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101829499B1 (en) * | 2011-02-24 | 2018-02-14 | 바스프 코팅스 게엠베하 | Method for producing a colour and/or effect-producing multi-layered coating |
-
2017
- 2017-09-26 CN CN201710880777.5A patent/CN107793903B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102051112A (en) * | 2011-01-18 | 2011-05-11 | 惠州市长润发涂料有限公司 | Aqueous double-component polyurethane varnish and preparation method of aqueous double-component polyurethane varnish |
| CN104379682A (en) * | 2012-06-28 | 2015-02-25 | 巴斯夫涂料有限公司 | Method of forming a multi-layer paint film |
| CN103567131A (en) * | 2013-10-21 | 2014-02-12 | 黄宣斐 | Method for coating surface of plastic |
| CN104449233A (en) * | 2014-12-10 | 2015-03-25 | 成都拜迪新材料有限公司 | Coating of water-based paint applied to engineering machinery product |
| CN205856373U (en) * | 2016-03-21 | 2017-01-04 | 广东达尔新型材料有限公司 | A kind of aqueous polyurethane mortar terrace coating |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107793903A (en) | 2018-03-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107793903B (en) | Coating composition for repairing rubber floor cloth and application thereof | |
| AU2009270809B2 (en) | Ambient cure solvent-based coatings for writable-erasable surfaces | |
| JP4953355B2 (en) | Water-based paint composition | |
| US8686091B2 (en) | Ambient cure water-based coatings for writable-erasable surfaces | |
| KR20130123362A (en) | Aliphatic polyurea coating, the method for preparing the same and the use thereof | |
| CN101678392A (en) | dendritic polyurethane coating | |
| KR20110053331A (en) | Dendritic polyurethane coating | |
| WO2011140370A1 (en) | Writable-erasable surfaces | |
| CN111690312A (en) | Scratch-resistant waterborne polyurethane finish paint for rail transit vehicles and preparation method thereof | |
| SG178001A1 (en) | Ambient cure water-based coatings for writable-erasable surfaces | |
| CN113698853B (en) | Coating and preparation method and application thereof | |
| JPH10259354A (en) | Stain-resistant elastic coating composition excellent in durability | |
| CN108559347A (en) | A kind of water paint for automotive plastic parts | |
| CN108485412A (en) | It is a kind of to can be used for the wet on wet aqueous high temperature plain color paint and preparation method thereof for exempting from middle painting system | |
| CN115851099B (en) | Water-based two-component coating for plastic and preparation method and application thereof | |
| JP6694992B1 (en) | Coating film manufacturing method | |
| US8722792B1 (en) | Dry-erase surface composition and method | |
| CN109988494A (en) | A kind of coating composition and the coating system comprising it | |
| KR100948993B1 (en) | Method for forming multiple coating film in automobile | |
| CN110484130B (en) | Water-based nano anti-skid and anti-corrosion diamond coating | |
| JPH0431885Y2 (en) | ||
| JP2002235035A (en) | Coating material composition | |
| KR101375022B1 (en) | Coating composition for interior panel of automobile | |
| CN113025178A (en) | Self-assembled two-component water-based acrylic acid antique paint and preparation method thereof | |
| US20240110078A1 (en) | Water-based acrylic isocyanate compositions |
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 |