CN107916024B - Water-based normal-temperature ultrafast-drying workshop precoated primer and preparation method and application thereof - Google Patents
Water-based normal-temperature ultrafast-drying workshop precoated primer and preparation method and application thereof Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/002—Priming paints
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
- C09D163/10—Epoxy resins modified by unsaturated compounds
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
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- C—CHEMISTRY; METALLURGY
- 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
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Abstract
The invention discloses a water-based normal-temperature ultrafast-drying workshop precoated primer as well as a preparation method and application thereof, belonging to the technical field of chemical industry. The water-based normal-temperature ultrafast-drying workshop pre-coated primer comprises the following components in parts by weight: 40-55 parts of water-based resin, 7-20 parts of water-based pigment, 15-30 parts of water-based filler, 1.7-4.9 parts of water-based auxiliary agent and 10-20 parts of solvent. The waterborne normal-temperature ultrafast-drying workshop precoated primer adopts cationic epoxy modified acrylic emulsion as a film forming substance, does not need to add a film forming auxiliary agent with high boiling point, completely takes water as a diluent, does not contain an organic solvent, has low VOC (volatile organic compounds) emission, is a green product beneficial to environmental protection, and meets the requirements of national environmental protection regulations; the cationic epoxy modified acrylic emulsion is used as a film forming substance, so that the drying speed is very high, the acrylic emulsion can be dried at 25 ℃ for 5-8 minutes to have hardness, the construction speed is increased, the construction period is shortened, and the application value is very high; can meet various construction process requirements, and has the advantages of extremely high drying speed, strong corrosion resistance and excellent various mechanical properties.
Description
Technical Field
The invention relates to the technical field of chemical industry, in particular to a water-based normal-temperature ultrafast drying shop precoated primer and a preparation method and application thereof.
Background
It is estimated that about one tenth of the world's steel production is lost to corrosion and rust. The economic loss caused by the corrosion of steel to China is at least over 400 million yuan per year, and the corrosion prevention of steel is very important.
The shop primer is the first paint coated after mechanical surface treatment, and has the main functions of protecting steel from atmospheric corrosion in the processing process, improving the adhesion of the finish paint, increasing the fullness of the finish paint, providing alkali resistance and corrosion resistance, ensuring the uniform absorption of the finish paint and enabling a paint system to exert the best effect. At present, the types of primers on the market are more, but the defects of slow drying, poor corrosion resistance and poor antirust capability generally exist, and the primers with poor anticorrosive and antirust capabilities cannot effectively protect steel, damage raw materials and cause waste.
Disclosure of Invention
In view of the above, the present invention provides a water-based room temperature ultrafast drying shop precoated primer, and a preparation method and an application thereof, wherein the water-based room temperature ultrafast drying shop precoated primer has greatly enhanced construction condition compatibility, good surface drying property and hardness increasing speed under low temperature and high humidity conditions, and excellent matching properties with various systems, compared with general shop precoated primers.
Based on the aim, the invention provides a water-based normal-temperature ultrafast-dry shop precoated primer which comprises the following components in parts by weight: 40-55 parts of water-based resin, 7-20 parts of water-based pigment, 15-30 parts of water-based filler, 1.7-4.9 parts of water-based auxiliary agent and 10-20 parts of solvent.
Preferably, the aqueous resin is a cationic epoxy modified acrylic emulsion.
Preferably, the water-based pigment is an environment-friendly pigment, and the solvent is deionized water.
Preferably, the water-based filler is one or more of high-purity barium sulfate, talcum powder and silicon micropowder, and the water-soluble ion content of the high-purity barium sulfate, talcum powder and silicon micropowder is less than 0.1%. .
Preferably, the aqueous auxiliary agent comprises, by weight, 0.5-1.5 parts of an aqueous dispersant, 0.1-0.4 part of an aqueous defoaming agent, 0.4-1.0 part of an aqueous thickener, 0.2-0.5 part of a base material wetting agent and 0.5-1.5 parts of an aqueous flash rust inhibitor.
More preferably, the aqueous dispersant is a nonionic dispersant, the aqueous defoamer is a nonionic defoamer, the aqueous thickener is an associated polyurethane thickener, the substrate wetting agent is digao 4100, and the aqueous anti-flash rust agent is one or more of hamming 179, rubo 60, and luborun 6250.
More preferably, the non-ionic dispersant is either dike 190 or dike 740W, the non-ionic defoamer is either dike 810 or dike 822, and the associated polyurethane-type thickener is either dike 105A or dike 299.
Based on the same invention concept, the invention also provides a preparation method of the waterborne normal-temperature ultrafast dry workshop precoated primer, which comprises the following steps: weighing raw materials of each component, uniformly mixing deionized water, water-based pigment, water-based filler, water-based dispersant and water-based defoaming agent to obtain mixed slurry, then dispersing the mixed slurry at a high speed, grinding the mixed slurry until the fineness of the slurry is less than 40 mu m, finally adding water-based resin, water-based thickener, base material wetting agent and water-based flash rust inhibitor, and uniformly stirring to obtain a finished product.
Based on the same invention concept, the invention also provides application of the water-based normal-temperature ultrafast drying workshop precoated primer, and the application of the water-based normal-temperature ultrafast drying workshop precoated primer in temporary protection of a workshop.
Preferably, the water-based normal-temperature ultrafast dry shop pre-coat primer is coated on the surface of the steel for temporary rust prevention and corrosion prevention before the steel is shipped or/and processed.
In the invention, cationic epoxy modified acrylic emulsion is used as a film forming substance; the adopted water-based pigment is an environment-friendly pigment without heavy metals such as lead, chromium and the like, has no heavy metal pollution and meets the requirements of national environmental regulations; one or more of high-purity barium sulfate, talcum powder and silicon micropowder with water-soluble ion content lower than 0.1% are used as water-based fillers, and the water-soluble ion content is lower than 0.1%, namely the mass percentage of water-soluble substances contained in the high-purity barium sulfate, talcum powder and silicon micropowder is lower than 0.1%.
From the above, it can be seen that the advantages and benefits of the present invention are:
(1) the waterborne normal-temperature ultrafast-drying workshop precoating primer provided by the invention adopts the cationic epoxy modified acrylic emulsion as a film forming substance, does not need to add a film forming auxiliary agent with a high boiling point, completely takes water as a diluent, does not contain an organic solvent, has low VOC (volatile organic compound) emission and even zero VOC emission, is a green product beneficial to environmental protection, and meets the requirements of national environmental protection regulations.
(2) The water-based normal-temperature ultrafast-drying shop precoated primer provided by the invention adopts most of domestic raw materials, is low in cost, and is simple in color paste water grinding process, easy to operate and convenient to prepare.
(3) The water-based normal-temperature ultrafast-drying workshop precoating primer provided by the invention adopts the cationic epoxy modified acrylic emulsion as a film forming substance, has extremely high drying speed, can be dried for 5-8 minutes at 25 ℃ to have hardness, improves the construction speed, shortens the construction period and has great use value.
(4) The water-based normal-temperature ultra-fast-drying shop precoated primer provided by the invention can meet various construction process requirements, and has the advantages of extremely high drying speed, good initial water resistance of products, strong corrosion resistance and excellent various mechanical properties.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to specific embodiments below.
It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are used for distinguishing two entities with the same name but different names or different parameters, and it should be noted that "first" and "second" are merely for convenience of description and should not be construed as limitations of the embodiments of the present invention, and they are not described in any more detail in the following embodiments.
First, an embodiment
The cationic epoxy modified acrylic emulsion used in the following examples was purchased from Shanghai Pengyi chemical Co., Ltd, and the product model was AC-60; iron oxide red powder was purchased from tricyclic pigment limited of south lake, product number 130.
Example 1
The water-based normal-temperature ultrafast-drying shop precoated primer comprises the following components: 45 parts of water-based resin, 8 parts of water-based pigment, 25 parts of water-based filler, 0.8 part of water-based dispersant, 0.3 part of water-based defoaming agent, 0.5 part of water-based thickener, 0.3 part of base material wetting agent, 0.8 part of water-based flash rust inhibitor and 20 parts of deionized water.
The water-based resin is cationic epoxy modified acrylic emulsion, the water-based pigment is 7.5 parts of titanium dioxide and 0.5 part of carbon black, the water-based filler is high-purity barium sulfate, the water-based dispersing agent is Pico 190, the water-based defoaming agent is Digao 810, the water-based thickening agent is Digao 299, the base material wetting agent is Digao 4100, and the water-based flash rust inhibitor is Hamming 179.
During preparation, deionized water, titanium dioxide, carbon black, high-purity barium sulfate, Bike 190 and Digao 810 are mixed and stirred uniformly to obtain mixed slurry; then dispersing the mixed slurry at a high speed for 30min, and then putting the mixed slurry into a sand mill to be ground until the fineness of the slurry is 40 mu m; finally, adding cationic epoxy modified acrylic emulsion, Digao 299, Digao 4100 and Haiming 179, and stirring uniformly to obtain the waterborne normal-temperature ultra-fast drying shop precoating primer.
Example 2
The water-based normal-temperature ultrafast-drying shop precoated primer comprises the following components: 55 parts of water-based resin, 15 parts of water-based pigment, 20 parts of water-based filler, 1.5 parts of water-based dispersant, 0.3 part of water-based defoaming agent, 0.5 part of water-based thickener, 0.4 part of base material wetting agent, 0.6 part of water-based flash rust inhibitor and 15 parts of deionized water.
The water-based resin is cationic epoxy modified acrylic emulsion, the water-based pigment is iron oxide red powder, the water-based filler is 15 parts of high-purity barium sulfate and 5 parts of silicon micropowder, the water-based dispersing agent is digao 740W, the water-based defoaming agent is digao 810, the water-based thickening agent is digao 105A, the base material wetting agent is digao 4100, and the water-based flash rust inhibitor is Ruibao 60.
During preparation, deionized water, iron oxide red powder, high-purity barium sulfate, silicon micropowder, digao 740W and digao 810 are mixed and stirred uniformly to obtain mixed slurry; then dispersing the mixed slurry at a high speed for 30min, and then putting the mixed slurry into a sand mill to be ground until the fineness of the slurry is 38 mu m; and finally, adding the cationic epoxy modified acrylic emulsion, the Digao 105A, the Digao 4100 and the Ruibao 60, and uniformly stirring to obtain the waterborne normal-temperature ultra-fast drying shop precoated primer.
Example 3
The water-based normal-temperature ultrafast-drying shop precoated primer comprises the following components: 50 parts of water-based resin, 18 parts of water-based pigment, 20 parts of water-based filler, 1.5 parts of water-based dispersant, 0.3 part of water-based defoaming agent, 0.5 part of water-based thickener, 0.4 part of base material wetting agent, 0.7 part of water-based flash rust inhibitor and 15 parts of deionized water.
The water-based resin is cationic epoxy modified acrylic emulsion, the water-based pigment is 8 parts of iron oxide red powder and 10 parts of titanium dioxide, the water-based filler is 10 parts of high-purity barium sulfate, 5 parts of talcum powder and 5 parts of silicon micropowder, the water-based dispersing agent is digao 740W, the water-based defoaming agent is digao 822, the water-based thickening agent is digao 105A, the base material wetting agent is digao 4100, and the water-based flash rust inhibitor is Luobo Run 6250.
When in preparation, deionized water, titanium dioxide, iron oxide red powder, high-purity barium sulfate, talcum powder, silicon micropowder, digao 740W and digao 822 are mixed and stirred uniformly to obtain mixed slurry; then dispersing the mixed slurry at a high speed for 30min, and then putting the mixed slurry into a sand mill to be ground until the fineness of the slurry is 40 mu m; finally, adding the cationic epoxy modified acrylic emulsion, the Digao 105A, the Digao 4100 and the Luborun 6250, and uniformly stirring to obtain the waterborne normal-temperature ultra-fast drying shop precoated primer.
Example 4
The water-based normal-temperature ultrafast-drying shop precoated primer comprises the following components: 40 parts of water-based resin, 20 parts of water-based pigment, 30 parts of water-based filler, 0.5 part of water-based dispersant, 0.1 part of water-based defoaming agent, 1.0 part of water-based thickener, 0.5 part of base material wetting agent, 1.5 parts of water-based flash rust inhibitor and 20 parts of deionized water.
The water-based resin is cationic epoxy modified acrylic emulsion, the water-based pigment is 10 organic medium yellow and 10 parts of titanium dioxide, the water-based filler is 20 parts of high-purity barium sulfate and 10 parts of talcum powder, the water-based dispersing agent is Pico 190, the water-based defoaming agent is digao 822, the water-based thickening agent is digao 299, the base material wetting agent is digao 4100, and the water-based flash rust inhibitor is Haiming 179.
During preparation, deionized water, organic medium yellow, titanium dioxide, high-purity barium sulfate, talcum powder, Pic 190 and Digao 822 are mixed and stirred uniformly to obtain mixed slurry; then dispersing the mixed slurry at a high speed for 30min, and then putting the mixed slurry into a sand mill to be ground until the fineness of the slurry is 30 mu m; finally, adding cationic epoxy modified acrylic emulsion, Digao 299, Digao 4100 and Haiming 179, and stirring uniformly to obtain the waterborne normal-temperature ultra-fast drying shop precoating primer.
Example 5
The water-based normal-temperature ultrafast-drying shop precoated primer comprises the following components: 53 parts of water-based resin, 7 parts of water-based pigment, 15 parts of water-based filler, 1.0 part of water-based dispersant, 0.4 part of water-based defoaming agent, 0.4 part of water-based thickener, 0.2 part of base material wetting agent, 0.5 part of water-based flash rust inhibitor and 10 parts of deionized water.
Wherein, the water-based resin is cationic epoxy modified acrylic emulsion, the water-based pigment is organic medium yellow, the water-based filler is silicon micropowder, the water-based dispersant is Pico 190, the water-based defoamer is Digao 810, the water-based thickener is Digao 105A, the base material wetting agent is Digao 4100, and the water-based flash rust inhibitor is Luobo emollient 6250.
When in preparation, deionized water, organic medium yellow, silicon micropowder, Bike 190 and digao 810 are mixed and stirred uniformly to obtain mixed slurry; then dispersing the mixed slurry at a high speed for 30min, and then putting the mixed slurry into a sand mill to be ground until the fineness of the slurry is 35 mu m; finally, adding the cationic epoxy modified acrylic emulsion, the Digao 105A, the Digao 4100 and the Luborun 6250, and uniformly stirring to obtain the waterborne normal-temperature ultra-fast drying shop precoated primer.
Example 6
The water-based normal-temperature ultrafast-drying shop precoated primer comprises the following components: 42 parts of water-based resin, 10 parts of water-based pigment, 18 parts of water-based filler, 1.3 parts of water-based dispersant, 0.2 part of water-based defoaming agent, 0.6 part of water-based thickener, 0.3 part of base material wetting agent, 1.0 part of water-based flash rust inhibitor and 10 parts of deionized water.
Wherein the water-based resin is cationic epoxy modified acrylic emulsion, the water-based pigment is titanium dioxide, the water-based filler is talcum powder, the water-based dispersing agent is digao 740W, the water-based defoaming agent is digao 822, the water-based thickening agent is digao 299, the base material wetting agent is digao 4100, and the water-based flash rust inhibitor is Ruibao 60.
During preparation, deionized water, titanium dioxide, talcum powder, digao 740W and digao 822 are mixed and stirred uniformly to obtain mixed slurry; then dispersing the mixed slurry at a high speed for 30min, and then putting the mixed slurry into a sand mill to be ground until the fineness of the slurry is 35 mu m; finally, adding the cationic epoxy modified acrylic emulsion, the Digao 299, the Digao 4100 and the Ruibao 60, and uniformly stirring to obtain the waterborne normal-temperature ultrafast-dried workshop precoated primer.
Example 7
The water-based normal-temperature ultrafast-drying shop precoated primer comprises the following components: 48 parts of water-based resin, 12 parts of water-based pigment, 23 parts of water-based filler, 1.0 part of water-based dispersant, 0.4 part of water-based defoaming agent, 0.8 part of water-based thickener, 0.5 part of base material wetting agent, 1.3 parts of water-based flash rust inhibitor and 12 parts of deionized water.
The waterborne resin is cationic epoxy modified acrylic emulsion, the waterborne pigment is carbon black, the waterborne filler is 13 parts of talcum powder and 10 parts of silicon powder, the waterborne dispersing agent is digao 740W, the waterborne defoaming agent is digao 810, the waterborne thickening agent is digao 105A, the base material wetting agent is digao 4100, and the waterborne flash rust inhibitor is Hamming 179.
During preparation, deionized water, carbon black, talcum powder, silicon micropowder, digao 740W and digao 810 are mixed and stirred uniformly to obtain mixed slurry; then dispersing the mixed slurry at a high speed for 30min, and then putting the mixed slurry into a sand mill to be ground until the fineness of the slurry is 30 mu m; finally, adding the cationic epoxy modified acrylic emulsion, digao 105A, digao 4100 and Haimines 179, and uniformly stirring to obtain the waterborne normal-temperature ultra-fast drying shop precoating primer.
Second, test example
The performance of the waterborne room temperature ultrafast dry shop pre-coat primer, the epoxy zinc-free primer and the epoxy zinc-rich primer prepared in example 1 were measured according to HG/T4758-2014 and GB/T2705-2003, and the results are shown in Table 1.
Table 1.
The fineness of the samples of the embodiments 2 to 7 is not more than 40um through the same performance test.
As can be seen from the data in Table 1, the fineness of the water-based room temperature ultrafast drying shop precoated primer prepared in example 1 is not more than 40 μm, the fineness of the primer directly affects the gloss, water permeability and storage stability of the coating film, the fineness is small, the coating can be flat and uniform, and the paint has beautifying effect on appearance and decorative performance. The viscosity of the water-based normal-temperature ultrafast-drying shop precoated primer prepared in the embodiment 1 is 85-95KU, which not only ensures the coating to have good stability, but also is convenient for primer production and construction. The water-based normal-temperature ultrafast dry shop primer prepared in example 1 is stored at 60 ℃ for 30 days without the phenomena of skinning, layering, flooding, thickening, precipitation, caking and the like, which shows that the water-based normal-temperature ultrafast dry shop primer provided by the invention has long quality guarantee period and stable property during storage. The surface drying time of the water-based normal-temperature ultrafast dry shop precoated primer prepared in the embodiment 1 at normal temperature is 6-8 min, which shows that the water-based normal-temperature ultrafast dry shop precoated primer provided by the invention has extremely high drying speed, can be dried in a short time to have hardness, and improves the construction speed. The actual drying time of the water-based normal-temperature ultrafast dry shop pre-coat primer prepared in the embodiment 1 at normal temperature is 12 hours, and the actual drying time of the epoxy zinc-free primer and the epoxy zinc-rich primer is 18 hours and 24 hours respectively, so that the drying speed of the water-based normal-temperature ultrafast dry shop pre-coat primer provided by the invention is far greater than that of the epoxy zinc-free primer and the epoxy zinc-rich primer, a coating film coated by the water-based normal-temperature ultrafast dry shop pre-coat primer is completely dried up at 12 hours to reach the final hardness, and normal-temperature ultrafast drying is realized. The impact strength which can be resisted by the water-based normal-temperature ultrafast dry shop precoated primer prepared in the embodiment 1 is 50Kg.cm, which shows that the water-based normal-temperature ultrafast dry shop precoated primer provided by the invention still has better deformation resistance under the action of high-speed load. The water-based room-temperature ultrafast-drying pre-painted shop primer prepared in example 1 has qualified initial water resistance, i.e., has good water resistance, and can ensure the stability of a paint film even in severe weather such as rain after construction in the actual construction process. The neutral salt spray resistance test of the water-based normal-temperature ultrafast dry shop pre-applied primer prepared in the embodiment 1 proves that the water-based normal-temperature ultrafast dry shop pre-applied primer is qualified after 400 hours, namely the water-based normal-temperature ultrafast dry shop pre-applied primer is exposed in a neutral sodium chloride atmosphere for 400 hours, and the surface foaming, the corrosion grade and the corrosion spreading distance of the water-based normal-temperature ultrafast dry shop pre-applied primer are still qualified, so that the water-based normal-temperature ultrafast dry shop pre-applied primer provided by the invention has good. The adhesion force of the water-based normal temperature ultrafast drying shop precoated primer prepared in the embodiment 1 is grade 1, namely the water-based normal temperature ultrafast drying shop precoated primer provided by the invention has good adhesion force, can be well adhered to a coated object and plays a role in protection. The VOC content of the water-based normal-temperature ultrafast drying workshop precoated primer prepared in the embodiment 1 is 43g/L, and the VOC content of the epoxy zinc-free primer and the VOC content of the epoxy zinc-rich primer are respectively 280g/L and 230g/L, namely the VOC content and the emission of the water-based normal-temperature ultrafast drying workshop precoated primer provided by the invention are obviously lower than that of the epoxy zinc-free primer and the epoxy zinc-rich primer, so that the water-based normal-temperature ultrafast drying workshop precoated primer is a green and environment-friendly product and is beneficial to environmental protection.
Comparing the performance test data of the waterborne normal-temperature ultrafast dry workshop precoated primer in the example 1 in the table 1 with the performance test data of the epoxy zinc-free primer and the epoxy zinc-rich primer, it can be seen that the waterborne normal-temperature ultrafast dry workshop precoated primer prepared in the example 1 meets the performance requirements of the common epoxy zinc-free primer and the common epoxy zinc-rich primer, and the test results of the waterborne normal-temperature ultrafast dry workshop precoated primer in the aspects of fineness, normal-temperature actual drying time, VOC content and the like are better than those of the epoxy zinc-free primer and the epoxy zinc-rich primer, i.e. the waterborne normal-temperature ultrafast dry workshop precoated primer has shorter drying time, faster drying speed and low or even zero VOC content; therefore, the waterborne normal-temperature ultra-fast-drying workshop precoated primer can completely replace epoxy zinc-free primer and epoxy zinc-rich primer commonly used in the prior art to be used as workshop precoated primer, can realize ultra-fast drying and is beneficial to environmental protection.
Third, application example
The water-based normal temperature ultra-fast drying shop pre-coating primer prepared in the example 1 is used for temporary workshop protection of a large steel company in Hunan, namely the water-based normal temperature ultra-fast drying shop pre-coating primer is coated on the surface of steel for temporary rust prevention and corrosion prevention before the steel leaves factory and before the steel is processed, and the performance of the steel coated with the water-based normal temperature ultra-fast drying shop pre-coating primer is excellent after performance tests.
Firstly, the steel which is coated with the water-based normal-temperature ultrafast drying workshop pre-coated with primer is stacked and transported after being dried for 3min at 30 ℃; secondly, exposing the coated steel in a neutral sodium chloride atmosphere for 120 hours to ensure that the steel is still qualified; thirdly, the steel coated with the water-based normal-temperature ultrafast-drying workshop pre-coated primer still has good electric welding cutting performance and good matching performance with various coating systems needing coating in subsequent processing; therefore, the water-based normal-temperature ultrafast-drying shop precoated primer provided by the invention can completely replace an oil system commonly used in the prior art, and has no obvious difference on the construction process and the overall economic benefit.
Those of ordinary skill in the art will understand that: the discussion of any embodiment above is meant to be exemplary only, and is not intended to intimate that the scope of the disclosure, including the claims, is limited to these examples; within the idea of the invention, also technical features in the above embodiments or in different embodiments may be combined and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity. Therefore, any omissions, modifications, substitutions, improvements and the like that may be made without departing from the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (4)
1. The application of the water-based normal-temperature ultrafast dry workshop pre-coated primer is characterized in that the water-based normal-temperature ultrafast dry workshop pre-coated primer is applied to temporary protection of a workshop; before steel leaves factory or/and steel processing, brushing the water-based normal-temperature ultrafast dry shop precoating primer on the surface of the steel for temporary rust prevention and corrosion prevention;
the water-based normal-temperature ultrafast-drying shop precoated primer comprises the following components in parts by weight: 40-55 parts of water-based resin, 7-20 parts of water-based pigment, 15-30 parts of water-based filler, 1.7-4.9 parts of water-based auxiliary agent and 10-20 parts of solvent;
wherein the water-based resin is cationic epoxy modified acrylic emulsion; the water-based filler is one or more of high-purity barium sulfate, talcum powder and silicon micropowder, and the water-soluble ion content of the high-purity barium sulfate, talcum powder and silicon micropowder is less than 0.1%;
the water-based auxiliary agent comprises 0.5-1.5 parts of water-based dispersing agent, 0.1-0.4 part of water-based defoaming agent, 0.4-1.0 part of water-based thickening agent, 0.2-0.5 part of base material wetting agent and 0.5-1.5 parts of water-based flash rust inhibitor;
the water-based flash rust inhibitor is one or more of Hamming 179, Ruibao 60 and Luborun 6250;
the water-based pigment is an environment-friendly pigment;
the environment-friendly pigment is one or more of titanium dioxide, carbon black, iron oxide red powder and organic medium yellow;
the solvent is deionized water.
2. The use of the aqueous room temperature ultrafast dry shop primer according to claim 1, wherein the aqueous dispersant is a non-ionic dispersant, the aqueous defoamer is a non-ionic defoamer, the aqueous thickener is an associative polyurethane thickener, and the substrate wetting agent is digao 4100.
3. The use of the waterborne ambient ultra fast drying shop primer according to claim 2, wherein the non-ionic dispersant is either pico 190 or digan 740W, the non-ionic defoamer is either digan 810 or digan 822, and the associated polyurethane-based thickener is either digan 105A or digan 299.
4. The application of the water-based normal-temperature ultrafast dry shop primer according to claim 1, wherein the preparation method of the water-based normal-temperature ultrafast dry shop primer comprises the following steps: weighing raw materials of each component, uniformly mixing deionized water, a water-based pigment, a water-based filler, a water-based dispersant and a water-based defoaming agent to obtain mixed slurry, then dispersing the mixed slurry at a high speed, grinding the mixed slurry until the fineness of the slurry is less than 40 mu m, finally adding a water-based resin, a water-based thickener, a substrate wetting agent and a water-based flash rust inhibitor, and uniformly stirring to obtain a finished product.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710942452.5A CN107916024B (en) | 2017-10-11 | 2017-10-11 | Water-based normal-temperature ultrafast-drying workshop precoated primer and preparation method and application thereof |
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| CN201710942452.5A CN107916024B (en) | 2017-10-11 | 2017-10-11 | Water-based normal-temperature ultrafast-drying workshop precoated primer and preparation method and application thereof |
Publications (2)
| Publication Number | Publication Date |
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| CN109627824A (en) * | 2018-12-12 | 2019-04-16 | 湖南梓先新材料有限公司 | Water-based mono-component shop primer and preparation method |
| CN111087897A (en) * | 2019-12-28 | 2020-05-01 | 西峡县三胜新材料有限公司 | Normal-temperature self-drying waterborne epoxy modified acrylic anticorrosive paint and preparation method thereof |
| CN111518449B (en) * | 2020-05-11 | 2021-10-22 | 绵阳麦思威尔科技有限公司 | Water-based epoxy hybrid acrylic acid self-crosslinking quick-drying paint used in high humidity environment and preparation method thereof |
| CN111925709B (en) * | 2020-08-10 | 2021-12-17 | 中车长江车辆有限公司 | Pre-coated primer for railway wagon and preparation method thereof |
| CN113861781A (en) * | 2021-10-18 | 2021-12-31 | 天津科瑞达涂料化工有限公司 | Super quick-drying and rapidly-packaged thick-coating type single-component water-based anticorrosive coating for cast pipe |
| CN113956699A (en) * | 2021-10-27 | 2022-01-21 | 新兴河北冶金资源有限公司 | Water-based quick-drying anticorrosive paint and processing method thereof |
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| CN105153912A (en) * | 2015-09-29 | 2015-12-16 | 东来涂料技术（上海）有限公司 | Quick dry intermediate paint for automotive repairing and preparation method of quick dry intermediate paint |
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Application publication date: 20180417 Assignee: HUNAN SHENGTU PAINT TECHNOLOGY CO.,LTD. Assignor: HUNAN TAIZI CHEMICAL COATINGS Co.,Ltd. Contract record no.: X2023980037256 Denomination of invention: A water-based room temperature ultra fast drying workshop precoating primer and its preparation method and application Granted publication date: 20200929 License type: Common License Record date: 20230630 |
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