CN113388344B - Dry-particle glaze glue and preparation method thereof - Google Patents
Dry-particle glaze glue and preparation method thereof Download PDFInfo
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- CN113388344B CN113388344B CN202110637395.6A CN202110637395A CN113388344B CN 113388344 B CN113388344 B CN 113388344B CN 202110637395 A CN202110637395 A CN 202110637395A CN 113388344 B CN113388344 B CN 113388344B
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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
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J131/00—Adhesives 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 acyloxy radical of a saturated carboxylic acid, of carbonic acid, or of a haloformic acid; Adhesives based on derivatives of such polymers
- C09J131/02—Homopolymers or copolymers of esters of monocarboxylic acids
- C09J131/04—Homopolymers or copolymers of vinyl acetate
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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
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
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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
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/08—Macromolecular additives
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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
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J139/00—Adhesives 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 a single or double bond to nitrogen or by a heterocyclic ring containing nitrogen; Adhesives based on derivatives of such polymers
- C09J139/04—Homopolymers or copolymers of monomers containing heterocyclic rings having nitrogen as ring member
- C09J139/06—Homopolymers or copolymers of N-vinyl-pyrrolidones
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- 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
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Abstract
The invention discloses dry glaze glue and a preparation method thereof, relating to the technical field of ceramic glaze, wherein the dry glaze glue comprises the following raw materials in percentage by mass: 1 to 3 percent of ethylene-vinyl acetate copolymer emulsion, 0.5 to 2 percent of polyvinylpyrrolidone, 0.5 to 1 percent of modified arabic gum, 0.5 to 1.5 percent of industrial sucrose, 90 to 95 percent of solvent, 0.5 to 1 percent of flatting agent and 1.6 to 3.3 percent of auxiliary agent. The dry particle glaze glue can keep the drying speed of the surface and the inner part of the dry particle consistent in the drying process, and has strong binding power. In the using process, the air bubbles of the glaze surface are small, the color development of the glaze surface is bright, and the color tone is pure.
Description
Technical Field
The invention relates to the technical field of ceramic glaze, in particular to dry-particle glaze glue and a preparation method thereof.
Background
At present, rock plate products are gradually developed as explosive products in the building ceramic industry. The conventional rock plates are larger and thinner, and the product characteristics place higher requirements on the existing glazing process. The body of the large-size ultrathin rock plate is thin, and the water content is strictly controlled in the process of glazing the rock plate body in order to avoid the phenomenon of brick explosion caused by excessive glazing water absorption in the firing process of a kiln and influence the product quality. Therefore, dry granules are introduced into the ceramic building industry to be used as substitutes of conventional water glaze, so that the production yield of the rock plate is improved. If the dry particles are uniformly distributed on the surface of the rock board blank and are not fixed, the brick blank is easily blown away by a fan near the kiln mouth when entering a kiln for sintering, so that the glaze surface has hollow and uneven phenomena, and the product quality is seriously influenced. In order to solve the problems, a layer of dry glue is sprayed after the dry particles are distributed, the dry particles can be firmly fixed on the surface of a blank body after drying, the dry particles are prevented from being blown away by a fan, and the product quality is improved.
There are many problems with conventional dry glues on the market today, such as: the adhesion force of the dry-method glue is not enough, and the use amount of the glue needs to be increased when the bonding strength of dry particles is improved, so that the green body absorbs water excessively; the dry-method glue has too many organic matters and high impurity content, and the volume of bubbles in the glaze is large and the amount of bubbles is large after dry particles are fired, so that the polishing yield is influenced; the dry method glue has poor permeability, and often a layer on the surface of dry granules is stuck, while the interior of the dry granules is still in a loose state, so that the glaze surface is separated from the layer and cracked after sintering.
Disclosure of Invention
The invention aims to solve the technical problem of providing dry glaze glue which is high in drying speed and strong in binding power. In the using process, the air bubbles of the glaze surface are small, the color development of the glaze surface is bright, and the color tone is pure.
The technical problem to be solved by the invention is to provide the preparation method of the dry-particle glaze glue.
In order to achieve the technical effect, the invention provides dry-particle glaze glue which comprises the following raw materials in percentage by mass:
1 to 3 percent of ethylene-vinyl acetate copolymer emulsion, 0.5 to 2 percent of polyvinylpyrrolidone, 0.5 to 1 percent of modified Arabic gum, 0.5 to 1.5 percent of industrial cane sugar, 90 to 95 percent of solvent and 1.6 to 3.3 percent of auxiliary agent.
Preferably, the vinyl acetate content in the ethylene-vinyl acetate copolymer emulsion is 70-95 wt%.
Preferably, the average molecular mass of the polyvinylpyrrolidone is 3000-16000; the modified Arabic gum has the relative molecular mass of 20000-35000.
Preferably, the auxiliary agent comprises the following components in percentage by mass:
0.5 to 1 percent of flatting agent, 0.5 to 1 percent of defoaming agent, 0.1 to 0.3 percent of pH regulator and 0.5 to 1 percent of preservative.
Preferably, the solvent is one or more selected from water, ethanol, glycol and glycerol;
the leveling agent is polyether modified organic silicon;
the defoaming agent is solvent-type organic silicon and/or water-based organic silicon;
the pH regulator is an alcohol amine compound and/or basic amino acid;
the preservative is cason and/or benzoic acid.
Preferably, the solvent is a mixture of water, ethylene glycol and glycerol, and the weight ratio of the three is as follows: the dosage of the ethylene glycol is as follows: the dosage of glycerol is as follows: amount of water = (5 to 10): (3-6): (85-90).
In order to achieve the technical effect, the invention provides a preparation method of dry-particle glaze glue, which comprises the following steps:
A. heating the solvent to 50-70 ℃, sequentially adding polyvinylpyrrolidone, modified gum arabic and industrial sucrose, and continuously stirring until the mixture is uniformly dispersed to obtain a first mixed solution;
B. adding the ethylene-vinyl acetate copolymer emulsion into the first mixed solution according to the proportion, stirring and mixing until the emulsion is uniform and milky white, and stopping stirring to obtain a second mixed solution;
C. after the second mixed solution is cooled to room temperature, adding an auxiliary agent according to the proportion, and uniformly stirring to obtain a third mixed solution;
D. and sieving the third mixed solution by using a screen to obtain the dry-particle glaze glue.
Preferably, in the step a, the stirring time is 1 to 3 hours, and the first mixed solution is in a light yellow transparent state;
in the step B, the stirring time is 0.5 to 2 hours;
in the step C, the stirring time is 0.5-2 h;
in the step D, the mesh number of the screen is 200-400 meshes.
Preferably, the viscosity of the dry particle glaze glue is 10-15 mPa.s, the surface tension is 33-38 mN/m, and the pH is 7-8.
The invention also provides a use method of the dry-particle glaze glue, which comprises the following steps:
mixing the dry-particle glaze glue and the protective glaze slurry, and spraying the mixture on the surface of the blank to form a first glue layer on the surface of the blank;
applying dry glaze on the surface of the first glue layer to form a dry glaze layer;
spraying a mixed solution of the dry glaze glue and the protective glaze slurry on the surface of the dry glaze layer to form a second glue layer;
and drying the green body forming the second glue layer, and sintering after drying to obtain a finished product.
The implementation of the invention has the following beneficial effects:
1. the main raw materials of the dry-particle glaze glue are ethylene-vinyl acetate copolymer emulsion, polyvinylpyrrolidone, arabic resin and industrial sucrose, the four raw materials are viscous materials, aqueous solutions of the viscous materials have certain viscosity, and particularly, the bonding force is more stable after the solution is dried. Will four kinds of raw materials are mixed the back and are used, can adjust the dry temperature gradient of dry grain glaze glue, reduce the dry temperature of the beginning of dry grain glaze glue for the surface and the inside drying rate on dry grain glaze layer keep almost the same, guarantee the fixed effect of dry grain glaze, avoided near kiln mouth fan to blow off dry grain, also avoided dry grain glaze when burning into because of the glaze layer inside glue not dry and residual liquid, and then the glaze absciss layer that causes, cracked defect, promoted the yield of rock plate product.
2. The raw materials of the dry-particle glaze glue adopt the low-molecular-weight ethylene-vinyl acetate copolymer emulsion, the polyvinylpyrrolidone, the Arabic resin and the industrial sucrose, so that the strong water solubility of the raw materials is ensured, the raw materials are not easy to layer when being mixed for use, and the stability of a mixed system is improved.
3. The ethylene-vinyl acetate copolymer emulsion with low molecular weight, the polyvinylpyrrolidone, the Arabic resin and the industrial sucrose in the raw materials of the dry-particle glaze glue are low in carbonization temperature, and are more easily degraded at high temperature and removed from the dry-particle glaze in the firing stage of the dry-particle glaze, pinholes and bubbles are not generated, white spots are prevented from being generated in the subsequent polishing and waxing processes, and the appearance quality of the product is improved.
4. The glue has high raw material grade and low impurity content, is easy to remove when a dry glaze layer is fired, is beneficial to keeping the color development of the dry glaze, enables the color tone to be fresh, and is convenient for the pattern design of high-grade rock plate products.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below.
In order to achieve the technical effect, the invention provides dry glaze glue, which comprises the following raw materials in percentage by mass:
1 to 3 percent of ethylene-vinyl acetate copolymer emulsion, 0.5 to 2 percent of polyvinylpyrrolidone, 0.5 to 1 percent of modified Arabic gum, 0.5 to 1.5 percent of industrial cane sugar, 90 to 95 percent of solvent and 1.6 to 3.3 percent of auxiliary agent.
The main raw materials of the dry-particle glaze glue are ethylene-vinyl acetate copolymer emulsion, polyvinylpyrrolidone, arabic resin and industrial sucrose, the four raw materials are viscous materials, aqueous solutions of the viscous materials have certain viscosity, and particularly, the bonding force is more stable after the solution is dried. When the four raw materials are used as glue, the drying speeds of the four raw materials are different, generally, the drying speed of the industrial sucrose is greater than that of the polyvinylpyrrolidone solution and that of the araben resin and that of the ethylene-vinyl acetate copolymer emulsion. Will use the drying temperature gradient that can adjust dry grain glaze material glue after four kinds of raw materialss mix, reduce the dry temperature in the beginning of dry grain glaze material glue compares with the glue that uses single kind, dry grain glaze material glue can make the surface on dry grain glaze material glaze layer and inside drying rate keep unanimous relatively, guarantees the fixed effect of dry grain glaze material, has avoided near kiln mouth fan to blow off dry grain, has also avoided dry grain glaze not dry and residual liquid because of the inside glue in glaze layer when burning, and then the glaze absciss layer that leads to the fact, defects such as chap have finally promoted the yield of rock plate product. The invention has the advantages that through small-test and middle-test production, the produced ceramic product has stable quality, stable and reliable production process, low raw material cost, simple processing process and low use cost, is beneficial to mass production, and can be widely popularized and applied.
In particular, a polyvinyl acetate-ethylene (hereinafter abbreviated as EVA) emulsion is a common adhesive, is usually prepared by an emulsion polymerization process, and is widely used for bonding materials such as plastic veneers such as wood and PVC, paper, non-woven fabrics, and leather due to low cost and good bonding performance. In the emulsion polymerization process, partially hydrolyzed polyvinyl alcohol is usually adopted as a stabilizer, and compared with a system with a stable small molecular emulsifier, the product has the advantages of good construction performance, high wet viscosity, high drying speed and good heat resistance, in the dry-particle glaze glue described in the patent, the mass percentage of the ethylene-vinyl acetate copolymer emulsion is 1-3%, and the mass percentage of the exemplary ethylene-vinyl acetate copolymer emulsion is 1.5%, 2% and 2.5%, but not limited thereto.
Compared with polyethylene, EVA has lowered crystallinity, raised flexibility, impact resistance, stuffing mixing performance and heat sealing performance, and excellent flexibility, impact strength, environment stress cracking resistance and optical performance in relatively wide temperature range. Generally, the physical and chemical properties of the EVA emulsion are mainly related to the content of vinyl acetate in the molecular chain (hereinafter referred to as VA content). When the VA content is high, the elasticity, flexibility, adhesiveness, intermiscibility, transparency and solubility of the EVA emulsion are improved; if the VA content is lower, the EVA emulsion performance is close to that of polyethylene. Therefore, in order to improve the adhesion and compatibility of the dry glaze glue, the vinyl acetate content of the ethylene-vinyl acetate copolymer emulsion is 70-95 wt%, and the appearance of the emulsion is milky-white to yellowish, and the vinyl acetate content of the exemplary ethylene-vinyl acetate copolymer emulsion is 75wt%, 80wt%, 85wt%, and 90wt%, but not limited thereto.
Polyvinylpyrrolidone (PVP) in the raw material formula of the dry-particle glaze glue is a non-ionic high-molecular compound, is the most distinctive of N-vinyl amide polymers, and is the most deeply and widely researched fine chemicals. The average molecular weight of PVP is conventionally expressed in terms of K, which is generally divided into four grades, namely K-15, K-30, K-60, K-90, which correspond to average molecular weights in the respective ranges 10000, 40000, 160000, 360000. The viscosity of PVP with different molecular weights is different, the larger the average molecular weight of PVP is, the larger the K value is, the larger the viscosity is, and the opposite is true. The average molecular weight of PVP in the raw material formula of the dry-particle glaze glue is 3000-16000, the dry-particle glaze glue belongs to PVP with a low K value, the viscosity is relatively low, the dry-particle glaze glue is easily soluble in water, and the aqueous solution is colorless and transparent. The low molecular weight PVP is more conducive to use with other viscous materials in the formulation and is more easily removed during subsequent firing. The mass percentage of the polyvinylpyrrolidone is 0.5-2%, and the mass percentage of the polyvinylpyrrolidone is 0.6%, 0.8%, 1.0%, 1.2%, 1.4%, 1.6%, 1.8% for example, but is not limited thereto.
In addition, the raw materials of the dry-particle glaze glue comprise modified gum arabic and industrial sucrose. The modified gum arabic is a light yellow or tawny semitransparent block, is a polyelectrolyte with the molecular weight of 20000-35000, and has certain viscosity and thickening effect. The modified gum arabic is 0.5 to 1% by mass, and exemplary gum arabic is 0.6%, 0.7%, 0.8%, 0.9% by mass, but not limited thereto.
The industrial sucrose is a yellow-white crystal or powder, has a molecular weight of about 342, is very soluble in water, and has a viscous aqueous solution. The mass percent of the industrial sucrose is 0.5-1.5%, and the mass percent of the exemplary industrial sucrose is 0.6%, 0.9%, 1%, 1.2%, but is not limited thereto
Further, the auxiliary agent in the raw materials of the dry-particle glaze glue comprises one or more of a leveling agent, a defoaming agent, a pH regulator and a preservative, and preferably, the auxiliary agent comprises the leveling agent, the defoaming agent, the pH regulator and the preservative. Wherein the leveling agent is polyether modified organic silicon, and preferably, the leveling agent is one or more of BYK-300, EFKA-3033 and DEUCHEM 466. The mass percent of the leveling agent is 0.5-1%, and the mass percent of the exemplary leveling agent is 0.6%, 0.7%, 0.8%, 0.9%, but not limited thereto.
The defoaming agent is solvent-type silicone and/or water-based silicone, and preferably, the defoaming agent is one or more of BYK-323, BYK-390, BYK-022 and BYK-024. The mass percent of the defoaming agent is 0.5-1%, and the mass percent of the exemplary defoaming agent is 0.6%, 0.7%, 0.8%, 0.9%, but is not limited thereto.
The pH regulator is an alcohol amine compound and/or basic amino acid, preferably the pH regulator is an alcohol amine compound, and most preferably the pH regulator is one or more of dimethylethanolamine and triethanolamine. The weight percentage of the pH regulator is 0.1-0.3%, and the weight percentage of the illustrative pH regulator is 0.15%, 0.2%, 0.25%, but not limited thereto.
The preservative is cason and benzoic acid, preferably, the preservative is cason, and the main active ingredient of the preservative is isothiazolinone compounds. The preservative is 0.5 to 1% by mass, and exemplary preservatives are 0.6%, 0.7%, 0.8%, 0.9% by mass, but not limited thereto.
In the raw materials of the dry-particle glaze glue, the content of a solvent is 90-95% by mass percent, and the solvent is one or more of water, ethanol, glycol and glycerol. Preferably, the solvent is a mixture of water, ethylene glycol and glycerol, and the weight ratio of the three is as follows: the dosage of the ethylene glycol is as follows: the dosage of glycerol is as follows: amount of water = (5 to 10): (3-6): (85-90). In the preparation process of the dry-particle glaze glue, the solvent plays a role in dispersing and moisturizing, and provides a reaction system for preparation.
Correspondingly, the preparation method of the dry-particle glaze glue comprises the following steps:
A. heating the solvent to 50-70 ℃, sequentially adding polyvinylpyrrolidone, modified gum arabic and industrial sucrose, and continuously stirring until the mixture is uniformly dispersed to obtain a first mixed solution;
B. adding the ethylene-vinyl acetate copolymer emulsion into the first mixed solution according to the proportion, stirring and mixing until the emulsion is uniform and milky white, and stopping stirring to obtain a second mixed solution;
C. after the second mixed solution is cooled to room temperature, adding an auxiliary agent into the second mixed solution according to the proportion, and uniformly stirring to obtain a third mixed solution;
specifically, when the auxiliary agent is added, the leveling agent, the defoaming agent, the pH regulator and the preservative should be added in sequence.
D. And sieving the third mixed solution by using a screen to obtain the dry-particle glaze glue.
In the preparation process, in the step a, the stirring time is 1 to 3 hours, the first mixed solution is in a light yellow transparent state, in the step B, the stirring time is 0.5 to 2 hours, in the step C, the stirring time is 0.5 to 2 hours, in the step D, the mesh number of the screen is 200 to 400 meshes, preferably, the mesh number of the screen is 300 to 350 meshes, and most preferably, the mesh number of the screen is 325 meshes. The viscosity of the prepared dry-particle glaze glue is 10-15 mPa.s, the surface tension is 33-38 mN/m, and the pH is 7-8.
The prepared dry glaze glue is used in the dry glaze glazing process, and the specific use method is as follows:
mixing the dry-particle glaze glue and the protective glaze slurry, and spraying the mixture on the surface of the blank with the pattern to form a first glue layer on the surface of the blank; glazing with dry glaze on the surface of the first glue layer to form a dry glaze layer; continuously spraying the mixed liquid of the dry glaze glue and the protective glaze on the surface of the dry glaze layer to form a second glue layer; and conveying the blank sprayed with the second glue layer to a drying kiln for drying, and conveying the dried blank to a kiln for sintering to obtain a finished product.
Specifically, the dry glaze glue and the protective glaze slurry are mixed, the mixture is adjusted to the specific gravity of 1.18-1.22, and sprayed on the blank with patterns by a high-pressure spray gun, and the application amount is 115-120 g/m 2 Forming a first glue layer on the surface of the blank body; then a layer of uniform dry particles is distributed on the surface of the first glue layer through a dry particle distributing machine to form a dry particle glaze layer; finally, a high-pressure spray gun is used for sprayingSpraying a layer of mixed liquid of dry glaze glue and protective glaze on the surface of the dry glaze layer, wherein the application amount is 195-205 g/m 2 Forming a second glue layer; and sending the blank sprayed with the second glue layer to a drying kiln for drying, and sending the dried blank to a kiln for firing to obtain a finished product, wherein the drying temperature of the drying kiln is 120-130 ℃.
The raw materials of the dry-particle glaze glue adopt low-molecular-weight EVA emulsion, PVP, arabic resin and industrial sucrose, so that the strong water solubility of the raw materials is ensured, the raw materials are not easy to layer when being mixed for use, the stability of a mixing system is high, and the dry-particle glaze glue is more uniform and consistent in the spraying process. In addition, in the firing stage of the dry particle glaze, the carbonization temperature of the low-molecular-weight EVA emulsion, PVP, the Arabic resin and industrial cane sugar is low, so that the EVA emulsion, the PVP, the Arabic resin and the industrial cane sugar are more easily degraded at high temperature and removed from the dry particle glaze, pinholes and bubbles are not generated, white spots are prevented from being generated in the subsequent polishing and waxing procedures, and the appearance quality of the product is improved. In addition, the glue has high raw material grade and low impurity content, and a dry particle glaze layer is easy to remove during firing, so that the color development of the dry particle glaze is kept, the color tone is bright, and the pattern design of high-grade rock plate products is facilitated.
For a better understanding of the invention, the following examples are included in the present description:
examples 1 to 6
The raw materials and contents of the dry glaze glue particles of examples 1-6 are shown in Table 1.
Table 1 examples 1-6 raw materials and contents (% by mass) of dry glaze glue
The raw materials and the contents shown in table 1 are mixed, and the preparation process of the dry-particle glaze glue described in the embodiments 1-6 is as follows:
weighing the solvent according to the proportion shown in the embodiments 1-6, adding the solvent into a double-layer glass reaction kettle, heating to 60 ℃, sequentially adding PVP, modified Arabic resin and industrial sucrose raw materials according to the proportion, and continuously stirring for 1.5-2 h until the raw materials are dissolved and react completely, wherein the whole solution system is in a light yellow and transparent state.
Then adding the EVA emulsion according to the proportion shown in the embodiments 1-6, continuously stirring and mixing uniformly for 0.5-1 h, standing after the whole reaction system presents uniform milky white, and cooling to room temperature.
And sequentially adding the auxiliary agents into the mixed liquid, continuously stirring for 0.5-1 h, and after stirring, screening by a 325-mesh screen to obtain dry-particle glaze glue.
Test examples 1 to 6
The dry glaze glues prepared in examples 1 to 6 were subjected to viscosity measurement, and the viscosity, surface tension and pH of the dry glaze glues were mainly measured. And detecting the performance indexes by using a viscosity tester, a surface tension tester and a pH value tester.
In order to evaluate the effect of the dry glaze glue, the dry glaze glue prepared in examples 1 to 6 was applied to a ceramic rock plate by mixing the dry glaze glue prepared in examples 1 to 6 with a protective glaze slurry, adjusting the slurry to a specific gravity of 1.2, spraying the slurry onto a patterned blank with a high pressure spray gun at an application amount of 115g/m 2 Then a layer of uniform dry particles is coated on the dry particle distributing machine, and finally the mixed solution of the dry particle glaze glue and the protective glaze prepared in the embodiments 1 to 6 is sprayed by a high pressure spray gun, wherein the application amount is 195g/m 2 And drying the rock plate in a drying kiln at 120 ℃ and then sintering the rock plate in the kiln to obtain a finished rock plate product. And evaluating the prepared rock plate finished product, and qualitatively evaluating the surface condition, pinhole defect, cracking defect, bubble defect and glaze color development of the rock plate finished product according to experience by observing with naked eyes by technicians. Specifically, the performance test results of the dry glaze glue particles of test examples 1-6 are shown in table 2.
Table 2 test examples 1-6 performance test results of dry glaze glue
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.
Claims (8)
1. The dry-particle glaze glue is characterized by comprising the following raw materials in percentage by mass:
ethylene-vinyl acetate copolymer emulsion 1~3%, polyvinylpyrrolidone 0.5-2%, modified gum arabic 0.5-1%, industrial sucrose 0.5-1.5%, solvent 90-95%, and auxiliary agent 1.6-3.3%;
the average molecular mass of the polyvinylpyrrolidone is 3000 to 16000; the relative molecular mass of the modified gum arabic is 20000 to 35000;
the solvent is a mixture of water, glycol and glycerol, and the weight ratio of the water to the glycol to the glycerol is as follows: the dosage of the ethylene glycol is as follows: the dosage of glycerol is as follows: amount of water used = (5 to 10): (3~6): (85 to 90).
2. The dry bead glaze glue of claim 1, wherein the vinyl acetate content in the ethylene-vinyl acetate copolymer emulsion is 70 to 95wt%.
3. The dry bead glaze glue of claim 1, wherein the auxiliary agent comprises, in mass percent:
0.5 to 1 percent of flatting agent, 0.5 to 1 percent of defoaming agent, 0.1 to 0.3 percent of pH regulator and 0.5 to 1 percent of preservative.
4. The dry bead glaze glue of claim 3, wherein the leveling agent is polyether modified silicone;
the defoaming agent is solvent-based organic silicon and/or water-based organic silicon;
the pH regulator is an alcohol amine compound and/or basic amino acid;
the preservative is cason and/or benzoic acid.
5. A method of preparing a dry-particle glaze glue according to any one of claims 1 to 4, characterized in that it comprises the following steps:
A. heating the solvent to 50-70 ℃, sequentially adding polyvinylpyrrolidone, modified gum arabic and industrial sucrose, and continuously stirring until the mixture is uniformly dispersed to obtain a first mixed solution;
B. adding the ethylene-vinyl acetate copolymer emulsion into the first mixed solution according to the proportion, stirring and mixing until the emulsion is uniformly milky white, and stopping stirring to obtain a second mixed solution;
C. after the second mixed solution is cooled to room temperature, adding an auxiliary agent according to the proportion, and uniformly stirring to obtain a third mixed solution;
D. and sieving the third mixed solution by using a screen to obtain the dry-particle glaze glue.
6. The preparation method of the dry-particle glaze glue as claimed in claim 5, wherein in the step A, the stirring time is 1 to 3h, and the first mixed solution is in a light yellow transparent state;
in the step B, the stirring time is 0.5 to 2h;
in the step C, stirring for 0.5 to 2h;
in the step D, the mesh number of the screen is 200-400 meshes.
7. The method for preparing the dry-particle glaze glue as claimed in claim 5, wherein the viscosity of the dry-particle glaze glue is 10 to 15mPa · s, the surface tension is 33 to 38mN/m, and the pH is 7~8.
8. Use of a dry-particle glaze glue according to any one of claims 1 to 4, characterized in that it comprises:
mixing the dry-particle glaze glue and the protective glaze slurry, and spraying the mixture on the surface of the blank to form a first glue layer on the surface of the blank;
applying dry glaze on the surface of the first glue layer to form a dry glaze layer;
spraying a mixed solution of the dry glaze glue and the protective glaze slurry on the surface of the dry glaze layer to form a second glue layer;
and drying the green body forming the second glue layer, and sintering after drying to obtain a finished product.
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| GB1248457A (en) * | 1968-05-08 | 1971-10-06 | Commercial Decal Inc | Ceramic decalcomania |
| BRPI0804474B8 (en) * | 2007-05-30 | 2019-10-22 | Dow Global Technologies Inc | Method for Preparing Glass and Ceramic Glazes on Glass for Adhesive Bonding and Method for Replacing a Window in a Structure |
| CN102992778B (en) * | 2012-09-11 | 2014-06-25 | 廖文宏 | Precision ceramic with jade texture and preparation method thereof |
| CN105016780B (en) * | 2014-04-28 | 2017-02-08 | 佛山市纳来建材有限公司 | Dry particle glaze rock simulated ceramic tile production process |
| CN105060933B (en) * | 2015-07-17 | 2018-03-16 | 星谊精密陶瓷科技（昆山）有限公司 | A kind of dry granular screen printing glaze stamp-pad ink and application |
| CN105647286A (en) * | 2016-03-15 | 2016-06-08 | 佛山市迈瑞思科技有限公司 | Ceramic ink with glue function and preparation method and production method thereof |
| CN107417304A (en) * | 2017-08-18 | 2017-12-01 | 佛山市东鹏陶瓷有限公司 | A kind of preparation technology of the strong dry granular brick of brick face third dimension |
| CN108251048B (en) * | 2018-01-19 | 2019-08-13 | 佛山市陶琦新型材料有限公司 | Dry granular glaze glue, dry granular glaze, dry granular glazed tile and preparation method thereof |
| CN110128172B (en) * | 2019-04-28 | 2022-02-08 | 东莞市唯美陶瓷工业园有限公司 | Method for improving surface moisture retention performance of ceramic tile green body and ceramic tile prepared by method |
| CN110304827A (en) * | 2019-07-24 | 2019-10-08 | 东莞市唯美陶瓷工业园有限公司 | The technique that hydrophilic material water-proof material and application material realization green compact enter the reduction of kiln moisture |
| CN110372212A (en) * | 2019-07-24 | 2019-10-25 | 东莞市唯美陶瓷工业园有限公司 | Adobe film forming moisturizer, ink-jet printing ink and decoration glue and preparation method |
| CN111484819A (en) * | 2020-04-29 | 2020-08-04 | 上海路嘉胶粘剂有限公司 | Environment-friendly water-based adhesive and preparation method and application thereof |
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