CN107793853B - Environment-friendly latex paint with waste ceramic as regenerated filler and preparation method thereof - Google Patents

Environment-friendly latex paint with waste ceramic as regenerated filler and preparation method thereof Download PDF

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CN107793853B
CN107793853B CN201711171150.9A CN201711171150A CN107793853B CN 107793853 B CN107793853 B CN 107793853B CN 201711171150 A CN201711171150 A CN 201711171150A CN 107793853 B CN107793853 B CN 107793853B
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grinding
latex paint
environment
agent
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CN107793853A (en
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郭艳平
赵由才
郑毅
夏发发
邓悦
周涛
戴世金
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Guangdong Vocational College of Environmental Protection Engineering
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Guangdong Vocational College of Environmental Protection Engineering
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    • 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
    • C09D125/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Coating compositions based on derivatives of such polymers
    • C09D125/02—Homopolymers or copolymers of hydrocarbons
    • C09D125/04—Homopolymers or copolymers of styrene
    • C09D125/08—Copolymers of styrene
    • C09D125/14—Copolymers of styrene with unsaturated esters
    • 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
    • C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
    • C09D133/04—Homopolymers or copolymers of esters
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    • 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
    • C09D143/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing boron, silicon, phosphorus, selenium, tellurium, or a metal; Coating compositions based on derivatives of such polymers
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    • 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
    • C09D5/02—Emulsion paints including aerosols
    • C09D5/024—Emulsion paints including aerosols characterised by the additives
    • C09D5/028—Pigments; Filters
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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    • 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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    • 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
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    • 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
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    • C08K2003/2227—Oxides; Hydroxides of metals of aluminium
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    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
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    • C08K2003/2241—Titanium dioxide
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    • 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
    • C08K3/24—Acids; Salts thereof
    • C08K3/26—Carbonates; Bicarbonates
    • C08K2003/265—Calcium, strontium or barium carbonate
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    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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Abstract

The invention provides an environment-friendly latex paint taking waste ceramic as a regenerated filler and a preparation method thereof, relating to the technical field of environmental protection. An environment-friendly latex paint taking waste ceramics as a regenerated filler comprises the following raw materials in percentage by weight: 10-50% of waste ceramic, 10-50% of emulsion, 0-28% of pigment and filler, 1-21% of additive and the balance of water. The latex paint takes waste ceramics as a raw material, reasonably utilizes the waste, saves resources, and is safe and environment-friendly; has better chemical and mechanical properties of acid and alkali resistance, scrubbing resistance, wear resistance and the like, has wide application range and better application prospect. A method for preparing environment-friendly latex paint by taking waste ceramic as regenerated filler comprises the following steps: grinding the waste ceramics, then sanding and pulping the waste ceramics with pigments, fillers, additives and water, and adding emulsion for blending. The method has the advantages of simple preparation process and strong controllability, and is suitable for large-scale production.

Description

Environment-friendly latex paint with waste ceramic as regenerated filler and preparation method thereof
Technical Field
The invention relates to the technical field of environmental protection, and in particular relates to an environment-friendly latex paint taking waste ceramic as a regenerated filler and a preparation method thereof.
Background
In the field of building coatings, emulsion paint is a water-based coating prepared by adding pigment, filler and various auxiliaries into synthetic resin emulsion serving as a base material, has simple preparation process, convenient construction and small environmental pollution, and is more and more favored by the market. The filler is used as an extender pigment of the latex paint, mainly plays a role in skeleton structure and improvement of paint performance, and accounts for about 20-40% of the components of the latex paint. At present, most of latex paint products in the market adopt mineral substances such as heavy calcium carbonate, light calcium carbonate, talcum powder, wollastonite powder, sericite powder, quartz powder and the like as fillers. The mining and processing of these mineral raw materials is irreparable from the environmental and natural resources.
A large amount of ceramic waste is generated in the production process of the architectural ceramics. In addition, a large amount of waste ceramic tiles can be generated in the processes of construction, reconstruction, decoration, demolition and the like of various buildings. With the continuous acceleration of the urbanization process in China, the yield of the solid waste is huge, the solid waste is accumulated year by year, the accumulation occupies the wasted land, potential threats exist to the environment, and the development of the ceramic and building industry is greatly restricted. At present, the problem of resource utilization of waste ceramics is urgently needed to be solved from the perspective of sustainable development strategy. Compared with huge waste production, the resource utilization technology of waste ceramics in China really realizes industrialization still less at present, the comprehensive utilization rate is low, and the resource comprehensive utilization technology of waste ceramics regenerated products with large market demand and relatively high added value needs to be further developed.
Disclosure of Invention
The invention aims to provide the environment-friendly latex paint taking the waste ceramic as the regenerated filler, which reasonably utilizes waste, saves resources, and is safe and environment-friendly; has better chemical and mechanical properties of acid and alkali resistance, scrubbing resistance, wear resistance and the like, has wide application range and better application prospect.
The invention also aims to provide a preparation method of the environment-friendly latex paint with the waste ceramic as the regenerated filler, which has simple preparation process, can adopt conventional production process equipment, has strong controllability and is suitable for large-scale production.
The technical problem to be solved by the invention is realized by adopting the following technical scheme.
The invention provides an environment-friendly latex paint taking waste ceramic as a regenerated filler, which comprises the following raw materials in percentage by weight: 10-50% of waste ceramic, 10-50% of emulsion, 0-28% of pigment and filler, 1-21% of additive and the balance of water.
The invention provides a preparation method of environment-friendly latex paint with waste ceramic as a regenerated filler, which comprises the following steps: grinding the waste ceramics, then sanding and pulping the waste ceramics with pigments, fillers, additives and water, and adding emulsion for blending.
The environment-friendly latex paint taking waste ceramic as a regenerated filler and the preparation method thereof have the beneficial effects that:
the environment-friendly latex paint with the waste ceramic as the regenerated filler provided by the invention uses the waste ceramic as the regenerated raw material to replace the mineral filler, so that the waste is reasonably utilized, the resource is saved, and the environment is protected. The waste ceramic is a ceramic material containing a crystalline phase after being subjected to high-temperature treatment at more than 1 thousand ℃, and has the characteristics of high hardness, high strength, stable physicochemical properties and the like. After the waste ceramic is ground, the grinding process is continuously used for reducing and controlling the fineness and distribution of the filler, and the grinding particles are of flat unshaped sheet structures, so that the common mineral filler of the latex paint can be completely or mostly replaced, the latex paint is beneficial to film formation and covering of the action surface, chapping of the latex paint is prevented, pulverization is delayed, the strength and hardness of the latex paint are improved, the chemical and mechanical properties such as acid and alkali resistance, scrubbing resistance, wear resistance and the like of the latex paint are enhanced, and the produced environment-friendly latex paint product has better application prospect.
The preparation method of environment-protecting emulsion paint using waste ceramic as regenerated filler is simple in technological process, and can adopt conventional grinding equipment and emulsion paint production technological equipment.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments will be briefly described below. It is appreciated that the following drawings depict only certain embodiments of the invention and are therefore not to be considered limiting of its scope. For a person skilled in the art, without inventive step, further relevant figures can be obtained from the following figures.
Fig. 1 is a scanning electron microscope image of the waste ceramic grinding particles provided by the embodiment of the present invention after being further sanded for 30 min.
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. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.
The following is a detailed description of an environment-friendly latex paint using waste ceramic as a regenerated filler and a preparation method thereof according to an embodiment of the present invention.
The embodiment of the invention provides an environment-friendly latex paint with waste ceramic as a regenerated filler, which comprises the following raw materials in percentage by weight: 10-50% of waste ceramic, 10-50% of emulsion, 0-28% of pigment and filler, 1-21% of additive and the balance of water. Wherein, the waste ceramics are subjected to coarse grinding and crushing, then are ground to 50-250 meshes, and ground particles are taken.
Further, in a preferred embodiment of the present invention, the raw materials comprise, by weight: 20-40% of waste ceramic, 20-40% of emulsion, 5-25% of pigment and filler, 5-16.5% of additive and the balance of water.
Table 1 waste ceramic chemical composition (%)
Figure BDA0001474965320000041
TABLE 2 waste ceramic phase composition (semi-quantitative%)
Figure BDA0001474965320000042
As can be seen from tables 1 and 2, the waste ceramics provided by the present invention mainly contain chemical components such as silicon oxide and aluminum oxide, and the main crystal phase substance is quartz. The waste ceramic is a ceramic material containing a crystalline phase and obtained by high-temperature treatment at more than 1 thousand ℃, and has high hardness, high strength and stable physicochemical properties. After the waste ceramic is ground, the fineness and distribution of the filler are reduced and controlled by using a sand grinding process, and the grinding particles are of flat and unshaped sheet structures and can completely replace or mostly replace the common mineral filler of the latex paint. In the invention, the particle size of the waste ceramic after coarse grinding, crushing and grinding is 50-250 meshes, and then the waste ceramic is further ground and refined by adopting a sand grinding process. The fine particle sheet structure is beneficial to film formation of the latex paint, covers the action surface, prevents chapping of the latex paint, delays pulverization, improves the strength and hardness of the latex paint, and enhances the chemical and mechanical properties of acid and alkali resistance, brushing resistance, wear resistance and the like. And the waste ceramic is alkaline, which is beneficial to the stability of the latex paint system, and the produced environment-friendly latex paint product has better application prospect.
And carrying out microscopic morphology test on the slurry particles obtained by further sanding the waste ceramic grinding particles provided by the invention. As shown in fig. 1, after the waste ceramic provided by the present invention is ground and further sanded for 30min, the particles have a certain dispersion degree, and are in an amorphous sheet structure with a smooth surface. Compared with the spherical and needle structure, the sheet structure is beneficial to film formation of the latex paint, covers the action surface, prevents chapping of the latex paint, delays pulverization, improves the strength and hardness of the latex paint, improves the performance and expands the application range.
In the embodiment of the invention, the emulsion mainly adopts styrene-acrylic, pure acrylic, silicone acrylic and the like emulsion.
The pigment mainly comprises conventional inorganic or organic pigments such as titanium dioxide, fluorescent whitening agent, ultramarine, phthalocyanine blue, zinc chrome yellow and the like, and is used singly or compositely.
Because the mining and processing of the mineral filler can destroy the environment and natural resources, the invention adopts the waste ceramics to replace the mineral filler. When other common mineral fillers are properly reduced and replaced by waste ceramic, the performance of the latex paint can be enhanced. In the invention, the mineral filler comprises talcum powder, calcined kaolin, mica powder, heavy calcium carbonate, light calcium carbonate and the like, and is used singly or compositely.
In the preparation process of the latex paint, different additives are added according to actual needs to achieve the required performance. In a preferred embodiment of the present invention, the additive includes any one or at least two of a thickener, a dispersant, an antifoaming agent, an antiseptic and antifungal agent, a film-forming aid, a leveling agent, and a pH adjuster.
The thickening agent is selected from polyurethane thickening agent, alkali swelling thickening agent, cellulose thickening agent and the like, and is singly added or compositely added.
The dispersant mainly comprises an anionic dispersant, a nonionic dispersant, a hydrophobic dispersant and the like.
The additive also comprises an isothiazolinone, a benzothiazolinone and derivatives thereof and other antiseptic and mildew preventive agents and the like so as to improve the stability of the emulsion paint.
In the embodiment of the invention, the film-forming auxiliary agent is selected from an alcohol ester film-forming agent, an alcohol ether film-forming agent, propylene glycol, ethylene glycol and the like, and is used singly or compositely.
The organic silicon modified flatting agent, the acrylic flatting agent, the polyurethane rheological additives and the like are used singly or compositely to improve the flatting property of the emulsion paint.
The pH regulator mainly comprises organic amine regulator, Amp-95pH regulator and the like.
In order to enable the prepared emulsion paint to have excellent mechanical properties and chemical properties, through experimental study of the inventor, the pigment and filler comprise 0-8% of pigment and at least one of 0-20% of mineral filler, and the additive comprises 0.2-3% of thickening agent, 0.3-3.8% of dispersing agent, 0.2-2.8% of defoaming agent, 0.1-3% of anti-corrosion and anti-mildew agent, 0.1-6% of film-forming assistant, 0.1-2% of flatting agent and 0-0.4% of pH regulator. Wherein, the waste ceramics are subjected to coarse grinding and crushing, then are ground to 50-250 meshes, and ground particles are taken.
The embodiment of the invention also provides a preparation method of the environment-friendly latex paint with the waste ceramic as the regenerated filler, which comprises the following steps:
fully mixing and stirring 1/2-4/5 of water, part of thickening agent, dispersing agent, 1/2-3/4 of defoaming agent and antiseptic and mildew-proof agent which are measured in advance for 0-20 min at the stirring speed of 500-800 rpm.
After stirring evenly, adding the waste ceramics and the pigment. In the embodiment of the invention, mineral filler can be added, and the mixture is dispersed for 0-40 min at the stirring speed of 800-1500 rpm to obtain a coarse dispersion liquid.
And adding the coarse dispersion liquid into a sand mill to be ground for 5-90 min, wherein the rotating speed of a motor of a grinding cavity is 1000-3000 rpm. Preferably, the particle size of the grinding beads is 0.3 to 3.0mm for sufficient grinding. The smaller the abrasive bead size, the smaller the particle size of the abrasive slurry particles. And testing the fineness, preferably the fineness is below 40 mu m, and obtaining the pigment filler slurry with uniform dispersion.
And slowly adding metered emulsion, film-forming auxiliary agent and residual defoaming agent into the slurry. And (3) uniformly stirring at a low speed of 300-800 rpm, adding the rest of thickening agent, pH regulator and the rest of water to regulate the viscosity of the system, and uniformly stirring to obtain the emulsion paint sample. Preferably, a certain amount of the leveling agent can be added, and the mass percentage of the leveling agent in the raw materials is 0.1-2%.
The features and properties of the present invention are described in further detail below with reference to examples.
Example 1
The embodiment provides an environment-friendly latex paint taking waste ceramic as a regenerated filler, which comprises the following components in percentage by weight:
the waste ceramics are subjected to coarse grinding and crushing, then are ground to 200 meshes, and the ground particles are taken.
35% of waste ceramic, 25% of styrene-acrylic emulsion, 5% of rutile titanium dioxide, 0.1% of fluorescent whitening agent, 2.2% of propylene glycol, 1.3% of alcohol ester film-forming agent, 0.1% of hydroxyethyl cellulose, 0.6% of anionic dispersant, 0.5% of organic silicon modified defoaming agent, 0.2% of isothiazolinone antiseptic and mildew inhibitor, 0.4% of alkali swelling thickener, 0.3% of organic silicon modified leveling agent, 0.2% of Amp-95pH regulator and the balance of water.
The preparation method mainly comprises the following steps:
weighing the above measured raw materials, adding hydroxyethyl cellulose, anionic dispersant, isothiazolinone preservative, propylene glycol and 1/2 organosilicon modified defoamer, adding 2/3 of water, and fully mixing at 500rpm for 5 min. Then, the measured waste ceramics, rutile type titanium dioxide and fluorescent whitening agent are added, and coarse dispersion is carried out for 15min at a high speed of 1200 rpm.
And (3) adding the coarse dispersion into a sand mill, grinding for 35min, wherein the grinding bead is 1mm, the rotating speed of a grinding cavity motor is 1500rpm, and the test fineness is below 25 mu m, so as to prepare the uniformly dispersed pigment filler slurry.
Slowly adding the metered styrene-acrylic emulsion, the alcohol ester film-forming agent and the balance defoaming agent into the slurry, uniformly stirring at a low speed of 500rpm, adding the metered alkali swelling thickener, and regulating the viscosity of the system to 90KU by using the organic silicon modified leveling agent, the Amp-95pH regulator and the balance water to prepare the paint sample.
Example 2
The embodiment provides an environment-friendly latex paint taking waste ceramic as a regenerated filler, which comprises the following components in percentage by weight:
the waste ceramics are coarsely ground and crushed, then ground to 150 meshes, and the ground particles are taken.
20% of waste ceramic, 30% of styrene-acrylic emulsion, 3% of titanium dioxide, 0.1% of ultramarine, 5% of talcum powder, 5% of calcined kaolin, 2.5% of propylene glycol, 1.5% of alcohol ester film-forming agent, 0.1% of modified hydroxyethyl cellulose, 0.5% of nonionic dispersant, 0.5% of organic silicon defoamer, 0.2% of isothiazolinone antiseptic and mildew inhibitor, 0.5% of polyurethane thickener, 0.1% of organic amine pH regulator and the balance of water.
The preparation method mainly comprises the following steps:
weighing the above weighed modified hydroxyethyl cellulose, nonionic dispersant, isothiazolone antiseptic and mildew inhibitor, propylene glycol and 3/4 silicone defoamer, adding 4/5 water, and fully mixing at 500rpm for 10 min. Then, the measured waste ceramics, talcum powder, calcined kaolin, titanium dioxide and ultramarine are added, and coarse dispersion is carried out for 20min at the high speed of 1500 rpm.
And (3) adding the coarse dispersion into a sand mill, grinding for 25min, wherein the grinding bead is 1mm, the rotating speed of a grinding cavity motor is 1800rpm, and the test fineness is below 30 mu m, so as to prepare the uniformly dispersed pigment filler slurry.
Slowly adding the metered styrene-acrylic emulsion, the alcohol ester film-forming agent and the balance of the defoaming agent into the slurry, uniformly stirring at a low speed of 450rpm, adding the metered polyurethane thickening agent, and regulating the viscosity of the system to 95KU by using the organic amine pH regulator and the balance of water to prepare the paint sample.
Example 3
The embodiment provides an environment-friendly latex paint taking waste ceramic as a regenerated filler, which comprises the following components in percentage by weight:
the waste ceramics are coarsely ground and crushed, then ground to 120 meshes, and ground particles are taken.
35% of waste ceramic, 25% of pure acrylic emulsion, 2% of phthalocyanine blue, 5% of mica powder, 2.0% of ethylene glycol, 1.3% of alcohol ether film-forming agent, 0.6% of associated alkali swelling thickener, 0.7% of hydrophobic dispersant, 0.5% of organosilicon modified defoamer, 0.3% of benzothiazolinone, 0.1% of Amp-95pH regulator and the balance of water.
The preparation method mainly comprises the following steps:
weighing the above weighed hydrophobic dispersant, benzothiazolone, ethylene glycol, 3/5 organosilicon modified defoamer and 1/2 associated alkali swelling thickener, adding 3/4 water, and mixing thoroughly at 300rpm for 5 min. Subsequently, the above metered waste ceramic, mica powder and phthalocyanine blue were added and coarsely dispersed at a high speed of 1500rpm for 20 min.
And (3) adding the coarse dispersion into a sand mill, grinding for 30min, wherein the grinding bead is 1.5mm, the rotating speed of a grinding cavity motor is 2000rpm, and the test fineness is below 35 mu m, so as to prepare the uniformly dispersed pigment filler slurry.
Slowly adding the metered pure acrylic emulsion, the alcohol ether film-forming agent and the balance antifoaming agent into the slurry, uniformly stirring at low speed of 350rpm, adding the metered balance thickening agent, and regulating the viscosity of the system to 90KU by using an Amp-95pH regulator and the balance water to obtain a paint sample.
Example 4
The embodiment provides an environment-friendly latex paint taking waste ceramic as a regenerated filler, which comprises the following components in percentage by weight:
the waste ceramics are coarsely ground and crushed, then ground to 120 meshes, and ground particles are taken.
30% of waste ceramic, 20% of silicone-acrylic emulsion, 4% of zinc chrome yellow, 5% of heavy calcium carbonate, 5% of talcum powder, 1.8% of propylene glycol, 1.2% of alcohol ester film-forming agent, 0.1% of hydroxymethyl cellulose, 0.4% of polyurethane thickener, 0.8% of nonionic dispersant, 0.6% of organic silicon defoamer, 0.3% of benzothiazolinone derivative, 0.1% of Amp-95pH regulator and the balance of water.
The preparation method mainly comprises the following steps:
weighing the above metered nonionic dispersant, benzothiazolinone derivative, propylene glycol, 3/4 silicone defoamer and hydroxymethyl cellulose, adding 3/5 of water, and mixing thoroughly at a medium speed of 500rpm for 5 min. Then, the above measured waste ceramics, ground calcium carbonate, talc powder and zinc chrome yellow are added, and coarse dispersion is carried out for 30min at a high speed of 1000 rpm.
And (3) adding the coarse dispersion liquid into a sand mill, grinding for 40min, wherein the grinding bead is 1.5mm, the rotating speed of a grinding cavity motor is 1600rpm, and the test fineness is below 35 mu m, so as to prepare the uniformly dispersed pigment filler slurry.
Slowly adding the metered silicone-acrylic emulsion, the alcohol ester film-forming agent and the balance of the defoaming agent into the slurry, uniformly stirring at a low speed under the condition of 400rpm, adding the metered polyurethane thickener, and regulating the viscosity of the system to 100KU by using an Amp-95pH regulator and the balance of water to prepare the paint sample.
Test examples
The environment-friendly latex paint prepared in the embodiment 1-4 and using the waste ceramics as the regenerated filler is selected for performance detection, and the result is as follows:
table 3 results of performance testing
Figure BDA0001474965320000111
Figure BDA0001474965320000121
As shown in Table 3, the environment-friendly latex paints prepared by using the waste ceramics as the regenerated fillers in the embodiments 1 to 4 have good stability, brushing resistance, acid resistance, alkali resistance and water resistance, good construction performance, short drying time and good appearance. In examples 2, 3 and 4, most of the mineral filler was replaced with waste ceramic, and in example 1, all of the mineral filler was replaced with waste ceramic. According to the test results, the latex paint products prepared in the examples 1 and 3 have stronger brushing resistance which is more than 2000 times, and have better performance with the drying time which is less than two hours.
In conclusion, the environment-friendly latex paint taking the waste ceramic as the regenerated filler provided by the invention takes the waste ceramic as the raw material instead of the mineral filler, so that the waste is reasonably utilized, the resource is saved, and the environment is protected. The waste ceramic has the characteristics of high hardness, high strength, stable physicochemical property and the like. After the waste ceramic is ground, the fineness and distribution of the filler are reduced and controlled by continuously using a sand grinding process, and the flaky structure of the waste ceramic is beneficial to forming a film of the latex paint and covering an action surface, preventing the latex paint from chapping, delaying pulverization and improving the strength and hardness of the latex paint; the processed waste ceramic can completely or mostly replace common mineral fillers of the emulsion paint, and is mixed with emulsion, pigment fillers, additives and water to prepare the emulsion paint with strong mechanical properties such as acid and alkali resistance, scrubbing resistance, wear resistance and the like.
The embodiments described above are some, but not all embodiments of the invention. The detailed description of the embodiments of the present invention is not intended to limit the scope of the invention as claimed, but is merely representative of selected embodiments of the invention. 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.

Claims (2)

1. The environment-friendly latex paint taking waste ceramics as a regenerated filler is characterized in that the raw materials for preparing the environment-friendly latex paint taking the waste ceramics as the regenerated filler comprise, by weight: 35% of waste ceramic, 25% of styrene-acrylic emulsion, 5% of rutile titanium dioxide, 0.1% of fluorescent whitening agent, 2.2% of propylene glycol, 1.3% of alcohol ester film-forming agent, 0.1% of hydroxyethyl cellulose, 0.6% of anionic dispersant, 0.5% of organic silicon modified defoaming agent, 0.2% of isothiazolinone antiseptic and mildew inhibitor, 0.4% of alkali swelling thickener, 0.3% of organic silicon modified leveling agent, 0.2% of Amp-95pH regulator and the balance of water;
the preparation method of the environment-friendly latex paint with the waste ceramic as the regenerated filler comprises the following steps: weighing the raw materials, coarsely grinding and crushing the waste ceramics, then grinding the waste ceramics to 200 meshes, and taking the ground particles; adding 2/3 of water into the hydroxyethyl cellulose, the anionic dispersant, the isothiazolinone preservative, the propylene glycol and the organic silicon modified defoaming agent of 1/2, and fully mixing for 5min at the rotating speed of 500 rpm; then, adding the waste ceramics, the rutile type titanium dioxide and the fluorescent whitening agent which are metered above, and coarsely dispersing for 15min at a high speed of 1200 rpm;
adding the coarse dispersion into a sand mill, grinding for 35min, wherein the grinding bead is 1mm, the rotating speed of a grinding cavity motor is 1500rpm, and the test fineness is below 25 mu m to prepare uniformly dispersed pigment filler slurry; after the waste ceramic is subjected to a sanding process, thinning and homogenizing the waste ceramic into a flat amorphous sheet structure;
slowly adding the metered styrene-acrylic emulsion, the alcohol ester film forming agent and the balance of the defoaming agent into the slurry, uniformly stirring at a low speed of 500rpm, adding the metered alkali swelling thickener, and regulating the viscosity of a system to 90KU by using the organic silicon modified leveling agent, the Amp-95pH regulator and the balance of water to prepare a paint sample.
2. The method for preparing the environment-friendly latex paint with the waste ceramic as the regenerated filler according to claim 1, which comprises the following steps: weighing the raw materials, coarsely grinding and crushing the waste ceramics, then grinding the waste ceramics to 200 meshes, and taking the ground particles; adding 2/3 of water into the hydroxyethyl cellulose, the anionic dispersant, the isothiazolinone preservative, the propylene glycol and the organic silicon modified defoaming agent of 1/2, and fully mixing for 5min at the rotating speed of 500 rpm; then, adding the waste ceramics, the rutile type titanium dioxide and the fluorescent whitening agent which are metered above, and coarsely dispersing for 15min at a high speed of 1200 rpm;
adding the coarse dispersion into a sand mill, grinding for 35min, wherein the grinding bead is 1mm, the rotating speed of a grinding cavity motor is 1500rpm, and the test fineness is below 25 mu m to prepare uniformly dispersed pigment filler slurry;
slowly adding the styrene-acrylic emulsion, the alcohol ester film forming agent and the balance of the defoaming agent into the slurry, uniformly stirring at a low speed of 500rpm, adding the alkali swelling thickener in the above amount, and adjusting the viscosity of the system to 90KU by using the organic silicon modified leveling agent, the Amp-95pH regulator and the balance of water to prepare the paint sample.
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