CN113337181B - EVA and BS double-component middle paint and preparation method thereof - Google Patents

EVA and BS double-component middle paint and preparation method thereof Download PDF

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Publication number
CN113337181B
CN113337181B CN202110837395.0A CN202110837395A CN113337181B CN 113337181 B CN113337181 B CN 113337181B CN 202110837395 A CN202110837395 A CN 202110837395A CN 113337181 B CN113337181 B CN 113337181B
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component
percent
eva
butadiene
paint
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CN113337181A (en
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周享平
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Guangdong Baoboli New Material Technology Co ltd
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Guangdong Baoboli New Material Technology Co ltd
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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
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/18—Fireproof paints including high temperature resistant paints
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/60—Additives non-macromolecular
    • C09D7/61—Additives non-macromolecular inorganic
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00—Specific properties of additives
    • C08K2201/002—Physical properties
    • C08K2201/005—Additives being defined by their particle size in general
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Paints Or Removers (AREA)

Abstract

The invention discloses EVA (ethylene vinyl acetate) and BS (styrene butadiene) two-component middle paint and a preparation method thereof, wherein the middle paint is prepared by mixing a component A and a component B in a ratio of 2:1, the component A comprises epoxy resin, an ethylene-vinyl acetate copolymer, zinc stearate, zeolite, metakaolin, a diatomite dispersion liquid, a defoaming agent and a dispersing agent, and the component B comprises polyester resin, a butadiene-styrene copolymer, a curing agent and a stabilizing agent. The invention adopts a two-component formula design combining EVA and BS, is innovatively integrated into the preparation of the coating, can be matched with other raw materials of the intermediate paint, increases the toughness, hardness and wear resistance of the intermediate paint, can modify the ethylene-vinyl acetate copolymer by adding the butadiene chain segment in the butadiene-styrene copolymer, obviously improves the toughness and strength of the ethylene-vinyl acetate copolymer, and can ensure that the ethylene-vinyl acetate copolymer has better compatibility with the intermediate paint by taking the butadiene-styrene copolymer as a grafting agent.

Description

EVA and BS double-component middle paint and preparation method thereof
Technical Field
The invention relates to the technical field of coatings, in particular to EVA (ethylene vinyl acetate) and BS (styrene butadiene) double-component medium paint and a preparation method thereof.
Background
The floor paint has the advantages of no seam, solid texture, corrosion resistance, water resistance, dust prevention, convenient maintenance, low maintenance cost and the like, so the floor paint is widely applied to the floors of workshops and parking lots of product factories requiring high cleanness, attractiveness, dust prevention and sterility in the electronic industry, medicines, electric appliances, electronics, machinery, chemical engineering, textiles, clothing, furniture, plastics, stationery and the like. Wherein, floor paint can generally be divided into finish paint, well lacquer and priming paint, however, current well lacquer exists following not enough: the hardness, abrasion resistance, water resistance, chemical resistance and adhesion of the paint remain to be enhanced.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides EVA and BS double-component medium paint and a preparation method thereof.
In order to achieve the above object, the first aspect of the present invention provides an EVA and BS two-component intermediate coat, which is prepared by mixing component A and component B in a ratio of 2:1,
the component A comprises the following raw materials in percentage by mass:
40% -60% of epoxy resin; 20 to 30 percent of ethylene-vinyl acetate copolymer; 2 to 10 percent of zinc stearate; 2 to 10 percent of zeolite; 2 to 10 percent of metakaolin; 2 to 8 percent of diatomite dispersion liquid; 1% -5% of defoaming agent; 1 to 5 percent of dispersant;
the component B comprises the following raw materials in percentage by mass:
30-40% of polyester resin; 10 to 20 percent of butadiene-styrene copolymer; 40 to 50 percent of curing agent; 2 to 8 percent of stabilizer.
Preferably, the fineness of the zeolite and the fineness of the metakaolin are respectively 150-200 meshes.
Preferably, the defoaming agent is phenethyl alcohol oleate, polydimethylsiloxane or polyoxyethylene polyoxypropylene pentaerythritol ether.
Preferably, the dispersant is a polyacrylate dispersant, a polyoxyethylene ether dispersant or a silicate dispersant.
Preferably, the acid value of the polyester resin is 70-85 mgKOH/g, and the epoxy equivalent is 700-830 g/eq.
Preferably, the butadiene-styrene copolymer is prepared by polymerizing 10-15% of n-butyllithium, 10-15% of tetrahydrofuran, 20-30% of butadiene and 40-60% of styrene.
Preferably, the curing agent is an epoxy curing agent, a polyamide curing agent or a water-based amine curing agent.
Preferably, the stabilizer is 2, 6-di-tert-butyl-4-allylphenol.
Preferably, the component a further comprises 2-8% of color nanometer resin powder, wherein the color nanometer resin powder comprises the following raw materials in percentage by mass:
40-60% of epoxy resin; 2 to 5 percent of hydroxyl acrylic acid dispersoid; 30 to 40 percent of curing agent; 1-5% of acrylic resin; 1% -5% of polyamide; 1% -2% of potassium hydroxide; 1 to 5 percent of wetting agent; 1% -3% of defoaming agent; 1 to 2 percent of pigment and 1 to 2 percent of calcium chloride; mixing the above raw materials, gelatinizing, granulating, and grinding into nanoscale powder.
The second aspect of the invention provides a preparation method of EVA and BS two-component medium paint, which comprises the following steps:
(1) uniformly mixing and stirring epoxy resin, ethylene-vinyl acetate copolymer, zinc stearate, zeolite, metakaolin, diatomite dispersion liquid, a defoaming agent and a dispersing agent in proportion to prepare a component A;
(2) uniformly mixing and stirring polyester resin, butadiene-styrene copolymer, curing agent and stabilizer in proportion to obtain a component B;
(3) before construction, the component A and the component B are mixed according to the ratio of 2:1 at normal temperature, and are quickly and uniformly stirred to obtain the EVA and BS double-component medium paint.
The preparation method of the diatomite dispersion liquid comprises the following steps:
adding a dispersing agent into diatomite for fine grinding to enable fine clay impurities contained in the diatomite shell to be dissociated from the diatomite, then removing the fine clay impurities through centrifugal precipitation, then carrying out wet-type ultrafine grinding to enable the average force to reach 00.4-00.8 mu m, and then carrying out surface treatment on the mixed liquid to obtain the diatomite dispersion liquid.
The preparation method of the color nano resin powder comprises the following steps:
the preparation method comprises the steps of firstly putting epoxy resin, hydroxyl acrylic acid dispersoid, acrylic resin, polyamide, wetting agent, defoaming agent and pigment into a stirring disperser at a high speed of 1000-2000 rpm, then sequentially adding potassium hydroxide and curing agent, uniformly stirring, then adding calcium chloride, granulating after high-elasticity gel is formed, and grinding into powder of 10-20 nanometers.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention adopts a two-component formula design combining EVA (ethylene-vinyl acetate copolymer) and BS (butadiene-styrene copolymer), is innovatively integrated into the preparation of the coating, can be matched with other raw materials of the intermediate coating to increase the toughness, hardness and wear resistance of the intermediate coating, and can modify the ethylene-vinyl acetate copolymer by adding the butadiene chain segment in the butadiene-styrene copolymer, thereby obviously improving the toughness and strength of the ethylene-vinyl acetate copolymer.
2. The invention has the advantages of strong adhesive force, wear resistance, high hardness, good weather resistance, heat resistance and flame retardance, no toxicity, no pollution, safety and environmental protection.
3. The epoxy resin and the polyester resin are combined, so that the adhesive force of the intermediate coating can be remarkably improved, and the epoxy resin and the polyester resin can be quickly cured by the curing agent, so that the toughness of the coating is improved.
4. The zeolite and metakaolin microporous materials can greatly enhance the hardness and wear resistance of the paint, and the diatomite dispersion liquid has the characteristics of large porosity, strong absorptivity, stable chemical property, less impurities, wear resistance, heat resistance and the like, can provide excellent surface performance for the paint, can increase the volume, thicken and improve the adhesive force, and enables a paint film to shorten the drying time. The filler can be used for preparing a compact paint film and enhancing the waterproof performance of the paint film.
5. The color nano resin powder and the middle paint both adopt the same resin base material (namely epoxy resin), the crosslinking density is higher after curing reaction, the compatibility is better, and the color nano resin powder can increase the hardness of the middle paint and enrich the color of the finish paint. In addition, the hydroxyl acrylic acid dispersoid in the colored nano resin powder has higher hardness and impact resistance and good adhesion after being crosslinked with the epoxy resin.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are a part of the embodiments of the present invention, but not all of the 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.
Example 1
Example 1 of the present invention provides an EVA and BS two-component intermediate coat prepared by mixing component a and component B in a 2:1 ratio,
the component A comprises the following raw materials in percentage by mass:
60% of epoxy resin; 30% of ethylene-vinyl acetate copolymer; 2% of zinc stearate; 2% of zeolite; 2% of metakaolin; 2% of diatomite dispersion liquid; 1% of defoaming agent; 1% of a dispersant;
the component B comprises the following raw materials in percentage by mass:
28% of polyester resin; butadiene-styrene copolymer 10%; 50% of curing agent; 2 percent of stabilizing agent.
The fineness of the zeolite and the metakaolin are respectively 150 meshes. The defoaming agent is phenethyl alcohol oleate. The dispersant is a polyacrylate dispersant. The acid value of the polyester resin is 70mgKOH/g, and the epoxy equivalent is 700 g/eq.
The butadiene-styrene copolymer is prepared by polymerizing 10% of n-butyllithium, 10% of tetrahydrofuran, 20% of butadiene and 60% of styrene.
The curing agent is an epoxy curing agent. The stabilizer is 2, 6-di-tert-butyl-4-allylphenol.
The preparation method of the EVA and BS double-component medium-temperature paint comprises the following steps:
(1) uniformly mixing and stirring epoxy resin, ethylene-vinyl acetate copolymer, zinc stearate, zeolite, metakaolin, diatomite dispersion liquid, a defoaming agent and a dispersing agent according to a proportion to prepare a component A;
(2) uniformly mixing and stirring polyester resin, butadiene-styrene copolymer, curing agent and stabilizer in proportion to obtain a component B;
(3) before construction, the component A and the component B are mixed according to the ratio of 2:1 at normal temperature, and are quickly and uniformly stirred to obtain the EVA and BS double-component medium paint.
Example 2
Embodiment 2 of the invention provides an EVA and BS two-component intermediate coat, which is prepared by mixing a component A and a component B in a ratio of 2:1,
the component A comprises the following raw materials in percentage by mass:
44% of epoxy resin; 30% of ethylene-vinyl acetate copolymer; 5% of zinc stearate; 5% of zeolite; 5% of metakaolin; 5% of diatomite dispersion liquid; 3% of defoaming agent; 3% of a dispersant;
the component B comprises the following raw materials in percentage by mass:
30% of polyester resin; butadiene-styrene copolymer 20%; 42% of a curing agent; 8 percent of stabilizing agent.
The fineness of the zeolite and the metakaolin are respectively 180 meshes. The defoaming agent is polydimethylsiloxane. The dispersing agent is polyoxyethylene ether dispersing agent. The acid value of the polyester resin is 80mgKOH/g, and the epoxy equivalent is 750 g/eq.
The butadiene-styrene copolymer is prepared by polymerizing 15% of n-butyllithium, 15% of tetrahydrofuran, 30% of butadiene and 40% of styrene.
The curing agent is a polyamide curing agent. The stabilizer is 2, 6-di-tert-butyl-4-allylphenol.
Example 3
Embodiment 3 of the invention provides an EVA and BS two-component intermediate coat, which is prepared by mixing a component A and a component B in a ratio of 2:1,
the component A comprises the following raw materials in percentage by mass:
40% of epoxy resin; 20% of ethylene-vinyl acetate copolymer; 7% of zinc stearate; 8% of zeolite; 7% of metakaolin; 7% of diatomite dispersion liquid; 5% of defoaming agent; 4% of a dispersant; 2% of color nano resin powder;
the component B comprises the following raw materials in percentage by mass:
35% of polyester resin; butadiene-styrene copolymer 15%; 45% of a curing agent; 5% of stabilizing agent.
The fineness of the zeolite and the fineness of the metakaolin are respectively 200 meshes.
The defoaming agent is polyoxyethylene polyoxypropylene pentaerythritol ether. The dispersant is a silicate dispersant. The acid value of the polyester resin is 85mgKOH/g, and the epoxy equivalent is 830 g/eq.
The butadiene-styrene copolymer is prepared by polymerizing 12% of n-butyllithium, 12% of tetrahydrofuran, 25% of butadiene and 51% of styrene.
The curing agent is a water-based amine curing agent. The stabilizer is 2, 6-di-tert-butyl-4-allylphenol.
The color nanometer resin powder comprises the following raw materials in percentage by mass:
60% of epoxy resin; 2% of a hydroxyacrylic acid dispersion; 31% of a curing agent; 1% of acrylic resin; 1% of polyamide; 1% of potassium hydroxide; 1% of wetting agent; 1% of defoaming agent; 1% of pigment and 1% of calcium chloride; mixing the above raw materials, gelatinizing, granulating, and grinding into nanoscale powder.
Example 4
Embodiment 4 of the invention provides an EVA and BS two-component intermediate coat, which is prepared by mixing component A and component B in a ratio of 2:1,
the component A comprises the following raw materials in percentage by mass:
46% of epoxy resin; 25% of ethylene-vinyl acetate copolymer; 8% of zinc stearate; 2% of zeolite; 2% of metakaolin; 5% of diatomite dispersion liquid; 2% of defoaming agent; 2% of a dispersant; 8% of color nano resin powder;
the component B comprises the following raw materials in percentage by mass:
36% of polyester resin; butadiene-styrene copolymer 18%; 40% of a curing agent; 6 percent of stabilizing agent.
The fineness of the zeolite and the metakaolin are respectively 160 meshes. The defoaming agent is polydimethylsiloxane. The dispersant is polyacrylate dispersant. The acid value of the polyester resin is 78mgKOH/g, and the epoxy equivalent is 760 g/eq.
The butadiene-styrene copolymer is prepared by polymerizing 10% of n-butyllithium, 14% of tetrahydrofuran, 26% of butadiene and 50% of styrene.
The curing agent is a polyamide curing agent. The stabilizer is 2, 6-di-tert-butyl-4-allylphenol.
The color nanometer resin powder comprises the following raw materials in percentage by mass:
50% of epoxy resin; 2% of a hydroxyacrylic acid dispersion; 36% of a curing agent; 4% of acrylic resin; 3% of polyamide; 1% of potassium hydroxide; 2% of a wetting agent; 2% of defoaming agent; 1% of pigment and 1% of calcium chloride; mixing the above raw materials, gelatinizing, granulating, and grinding into nanoscale powder.
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.

Claims (7)

1. An EVA and BS two-component intermediate coat is characterized in that the intermediate coat is prepared by mixing a component A and a component B in a ratio of 2:1,
the component A comprises the following raw materials in percentage by mass:
40-60% of epoxy resin; 20 to 30 percent of ethylene-vinyl acetate copolymer; 2 to 10 percent of zinc stearate; 2 to 10 percent of zeolite; 2 to 10 percent of metakaolin; 2% -8% of diatomite dispersion liquid; 1% -5% of defoaming agent; 1 to 5 percent of dispersant;
the component B comprises the following raw materials in percentage by mass:
30-40% of polyester resin; 10 to 20 percent of butadiene-styrene copolymer; 40 to 50 percent of curing agent; 2 to 8 percent of stabilizer; wherein the curing agent is an epoxy curing agent; the stabilizer is 2, 6-di-tert-butyl-4-allylphenol;
the component A also comprises 2-8% of color nano resin powder, wherein the color nano resin powder comprises the following raw materials in percentage by mass:
40% -60% of epoxy resin; 2-5% of hydroxyl acrylic acid dispersoid; 30 to 40 percent of curing agent; 1-5% of acrylic resin; 1% -5% of polyamide; 1% -2% of potassium hydroxide; 1 to 5 percent of wetting agent; 1% -3% of defoaming agent; 1 to 2 percent of pigment and 1 to 2 percent of calcium chloride; mixing the above raw materials, gelatinizing, granulating, and grinding into nanoscale powder.
2. The EVA and BS two-component paint according to claim 1, wherein the fineness of the zeolite and the fineness of the metakaolin are respectively 150-200 meshes.
3. The EVA and BS two-component paint of claim 1, wherein the defoamer is a phenethyl alcohol oleate, polydimethylsiloxane or polyoxyethylene polyoxypropylene pentaerythritol ether.
4. The EVA and BS two-component paint according to claim 1, wherein the dispersant is a polyacrylate dispersant, a polyoxyethylene ether dispersant or a silicate dispersant.
5. The EVA and BS two-component intermediate coat according to claim 1, wherein the polyester resin has an acid value of 70-85 mgKOH/g and an epoxy equivalent of 700-830 g/eq.
6. The EVA and BS two-component medium paint as claimed in claim 1, wherein the butadiene-styrene copolymer is polymerized from 10% -15% of n-butyl lithium, 10% -15% of tetrahydrofuran, 20% -30% of butadiene and 40% -60% of styrene.
7. A method for preparing the EVA and BS two-component medium paint as claimed in any one of claims 1 to 6, which is characterized by comprising the following steps:
(1) mixing and stirring epoxy resin, ethylene-vinyl acetate copolymer, zinc stearate, zeolite, metakaolin, diatomite dispersion liquid, a defoaming agent, a dispersing agent and color nano resin powder uniformly according to a proportion to prepare a component A;
(2) uniformly mixing and stirring polyester resin, butadiene-styrene copolymer, curing agent and stabilizer in proportion to obtain a component B;
(3) before construction, the component A and the component B are mixed according to the ratio of 2:1 at normal temperature, and are quickly and uniformly stirred to obtain the EVA and BS double-component medium paint.
CN202110837395.0A 2021-07-23 2021-07-23 EVA and BS double-component middle paint and preparation method thereof Active CN113337181B (en)

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CN104973823A (en) * 2014-04-14 2015-10-14 湖南法蓝雅涂料科技有限公司 Glass-ceramic coating, preparation method thereof and use method thereof
CN104194500B (en) * 2014-09-02 2016-04-06 祁振君 Complex body aqueous polymer waterproof coating material and manufacture method thereof
CN107325612A (en) * 2017-07-13 2017-11-07 福州中能晟源环保科技有限公司 A kind of environment-friendly type gravity flow self-leveling floor paint and preparation method thereof
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