CN107935606B - High-efficiency ceramic body reinforcing agent composition and product prepared from same - Google Patents
High-efficiency ceramic body reinforcing agent composition and product prepared from same Download PDFInfo
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- CN107935606B CN107935606B CN201711208768.8A CN201711208768A CN107935606B CN 107935606 B CN107935606 B CN 107935606B CN 201711208768 A CN201711208768 A CN 201711208768A CN 107935606 B CN107935606 B CN 107935606B
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
- C04B35/632—Organic additives
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Abstract
The invention relates to a high-efficiency ceramic body reinforcing agent composition and a product prepared from the same, wherein the composition comprises the following components in percentage by mass: 4 to 8 percent of acrylic pressure-sensitive adhesive emulsion, 1 to 3 percent of modified natural polymer, 8 to 15 percent of epoxy modified sodium polyacrylate and the balance of water. According to the invention, the acrylic pressure-sensitive adhesive emulsion and the epoxy modified sodium polyacrylate are used in the field of ceramic body reinforcing agents, the viscosity of body slurry is not influenced, and the high-efficiency reinforcing effect is achieved after the body is dried.
Description
Technical Field
The invention relates to a ceramic body reinforcing agent, in particular to a high-efficiency ceramic body reinforcing agent composition and a product prepared from the same, belonging to the field of ceramic additives and ceramic production.
Technical Field
The ceramic industry is the three-high industry with high pollution, high energy consumption and high resource consumption, along with the rapid development of the ceramic industry, high-quality clay resources are increasingly deficient, energy conservation and emission reduction are realized, and moderate thinning is a necessary way for the development of ceramics. The preparation of the blank is a very important link, and the drying strength of the blank is an important index, which has important influence on the yield and quality of the product. In the existing ceramic production, the phenomenon of low yield caused by insufficient green strength generally exists, the green strength and the porcelain forming strength of a properly thinned ceramic product are obviously reduced, and the probability of damage or cracking is greatly increased in the conveying and using processes. And the specifications of the existing ceramic products tend to be larger and larger, so that the improvement of the strength of the green body is particularly important for ceramic production. The selection of the high-efficiency green body reinforcing agent is an important means for improving the green body strength.
The green body reinforcing agent comprises an organic reinforcing agent and an inorganic reinforcing agent. The inorganic reinforcing agent is usually bentonite, water glass and the like, the organic reinforcing agent is usually used methyl cellulose, carboxymethyl cellulose, hydroxymethyl cellulose, polyvinyl alcohol, polypropylene alcohol, alginate and the like, and recently, novel ceramic reinforcing agents such as a sodium polyacrylate complexing agent, a modified starch polymer and the like are appeared. The commercial green body reinforcing agent on the market has two types, namely powder and liquid, wherein the former is easy to package and transport but easy to absorb moisture and agglomerate, and the latter is easy to disperse in ceramic slurry and more convenient to use.
For example, a series of sodium polyacrylates with different relative molecular masses are synthesized by Lijia and the like, and are applied to blanks of art porcelain, the influence of the sodium polyacrylate on the strength and deformation rate of the blanks of the art porcelain is researched, and the strengthening mechanism of the sodium polyacrylate is discussed; the result shows that the sodium polyacrylate can effectively improve the forming strength of the artistic porcelain blank and reduce the deformation rate of the blank, when the mass fraction of the reinforcing agent c is 0.6%, the increase rate of the drying strength of the blank reaches 167.5%, and the deformation rate of the blank is reduced from 50% to 10%. However, the sodium polyacrylate reinforcing agent is expensive and still needs to be matched with an inorganic reinforcing agent for use.
Disclosure of Invention
To overcome the disadvantages and shortcomings of the prior art, the present invention aims to provide a highly efficient ceramic body enhancer composition.
The invention relates to a high-efficiency ceramic body reinforcing agent composition, which comprises the following components in percentage by mass: 4 to 8 percent of acrylic pressure-sensitive adhesive emulsion, 1 to 3 percent of modified natural polymer, 8 to 15 percent of epoxy modified sodium polyacrylate and the balance of water.
The epoxy modified sodium polyacrylate is prepared by adopting an aqueous solution free radical polymerization method, and the preparation method comprises the following steps: adding 5-10 parts of epoxy micromolecules containing unsaturated double bonds, 0.05-0.3 part of surfactant, 2-4 parts of reducing agent and 60-80 parts of water into a reactor, fully and uniformly dispersing, then adding 20-30 parts of sodium acrylate, and heating a heating system to 50-80 ℃; and then, dropwise adding an initiator into the reaction kettle, keeping the temperature for reacting for 2-5 hours after the dropwise adding is finished for 0.5-1 hour, cooling to room temperature, and discharging to obtain the epoxy modified sodium polyacrylate.
The structural formula of the epoxy modified sodium polyacrylate is as follows, wherein R is hydrogen or methyl, A is carbonyl or methylene, x is 10-30, and y is 3-10.
The pH value of the acrylic pressure-sensitive adhesive emulsion is 7-11, and the mass portion of the effective components is 30-60%.
The modified natural polymer is at least one of methylcellulose, hydroxyethyl cellulose, water-soluble starch, carboxymethyl cellulose, hydroxymethyl cellulose, sodium alginate, and sodium lignosulfonate modified by acylation reaction, carboxymethylation reaction, esterification reaction, or grafting reaction.
The epoxy micromolecule containing unsaturated double bonds is at least one of glycidyl methacrylate, glycidyl acrylate, allyl glycidyl ether and itaconic acid diglycidyl ester.
The surfactant is at least one of sodium stearate, sodium laurate, sodium dodecyl benzene sulfonate, sodium didodecyl phenyl ether disulfonate, sodium laurate, sodium stearate, OP-10, phenethyl phenol polyoxyethylene ether and Tween.
The reducing agent is at least one of thioglycolic acid, mercaptopropionic acid, sodium bisulfite, sodium phosphite and rongalite.
The initiator is at least one of ammonium persulfate, potassium persulfate, hydrogen peroxide and sodium persulfate.
A ceramic comprising the above high-performance ceramic body enhancer composition as an ingredient.
Compared with the prior art, the invention has the advantages that: (1) the acrylic pressure-sensitive adhesive emulsion is matched with a ceramic blank slurry system, so that the viscosity of the blank slurry is not influenced, when the blank is dried, the acrylic pressure-sensitive adhesive latex combines different blank particles together through self-adhesive force, the plasticizing effect is achieved, and the cracking rate of the dried blank is reduced; (2) the synthesized epoxy modified sodium polyacrylate is used for the field of ceramic body reinforcing agents for the first time, on one hand, a sodium polyacrylate chain segment in the epoxy modified sodium polyacrylate plays a role in dispersing in ceramic slurry, and on the other hand, an epoxy group in the epoxy modified sodium polyacrylate chain segment and body particles have a cross-linking and reinforcing effect in the drying process of a body.
Detailed Description
A high performance ceramic body enhancer composition of the present invention is further described with reference to the following examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention.
Example 1
The high-efficiency ceramic body reinforcing agent composition comprises the following components in percentage by mass: 5% of acrylic pressure-sensitive adhesive emulsion (pH is 8-9, and mass portion is 44%), 3% of sodium alginate, 8% of epoxy modified sodium polyacrylate X, and the balance of water.
The epoxy modified sodium polyacrylate X is prepared by adopting an aqueous solution free radical polymerization method, and the preparation method comprises the following steps: adding 10 parts of allyl glycidyl ether, 0.3 part of sodium dodecyl benzene sulfonate, 2 parts of thioglycolic acid, 1 part of sodium formaldehyde sulfoxylate, and 80 parts of water into a reactor, fully and uniformly dispersing, then adding 30 parts of sodium acrylate, and heating the system to 60 ℃; then dropwise adding hydrogen peroxide into the reaction kettle, keeping the temperature for 4 hours after the dropwise adding is finished after 0.8 hour, cooling to room temperature, and discharging to obtain the epoxy modified sodium polyacrylate X.
The reinforcing properties of the green body reinforcing agent in this example were measured according to standard methods: after being uniformly stirred, standard slurry of a certain ceramics company in Shandong area is measured by a measuring cup of 1000ml, 0.10g of the high-efficiency ceramic body reinforcing agent obtained in the embodiment is added, the mixture is stirred for five minutes by a high-speed stirrer, then the mixture is injected into a standard inner triangular die and is started to be timed by a stopwatch, the die is opened thirty minutes later, the operation temperature is room temperature, the initial cracking time is 13min26s, and the final cracking time is 52min20 s.
Example 2
The high-efficiency ceramic body reinforcing agent composition comprises the following components in percentage by mass: 4% of acrylic pressure-sensitive adhesive emulsion (with the pH of 9-10 and the mass part of 50%), 1% of carboxymethyl starch, 15% of epoxy modified sodium polyacrylate Y and the balance of water.
The epoxy modified sodium polyacrylate Y is prepared by adopting an aqueous solution free radical polymerization method, and the preparation method comprises the following steps: adding 5 parts of glycidyl methacrylate, 0.03 part of phenethylphenol polyoxyethylene ether, 0.02 part of sodium laurate, 2 parts of sodium bisulfite and 60 parts of water into a reactor, fully and uniformly dispersing, then adding 20 parts of sodium acrylate, and heating the system to 80 ℃; and then, dropwise adding potassium persulfate into the reaction kettle, keeping the temperature for reaction for 2 hours after dropwise adding is finished for 1 hour, cooling to room temperature, and discharging to obtain the epoxy modified sodium polyacrylate Y.
The reinforcing properties of the green body reinforcing agent in this example were measured according to standard methods: after the standard slurry of a certain ceramics company in Shandong area is stirred uniformly, 500ml of slurry is measured by using a measuring cup of 1000ml, 0.12g of the acrylamide grafted corn starch ceramic reinforcing agent obtained in the embodiment is added, the mixture is stirred for five minutes under a high-speed stirrer, then the mixture is injected into a standard inner triangular mold and is started to be timed by using a stopwatch, the mold is opened thirty minutes later, the operation temperature is room temperature, the initial cracking time is 13min57s, and the final cracking time is 53min30 s.
Example 3
The high-efficiency ceramic body reinforcing agent composition comprises the following components in percentage by mass: 8% of acrylic pressure-sensitive adhesive emulsion (the pH is 7-8, and the mass part is 54%), 1.4% of water-soluble starch, 12% of epoxy modified sodium polyacrylate Z and the balance of water.
The epoxy modified sodium polyacrylate Z is prepared by adopting an aqueous solution free radical polymerization method, and the preparation method comprises the following steps: adding 7 parts of glycidyl acrylate ester, 0.2 part of sodium didodecylphenyl ether disulfonate, 1.5 parts of sodium phosphite, 1.0 part of sodium formaldehyde sulfoxylate and 68 parts of water into a reactor, fully and uniformly dispersing, then adding 24 parts of sodium acrylate, and heating the system to 70 ℃; and then ammonium persulfate is dropwise added into the reaction kettle, the dropwise addition is finished within 0.6h, the reaction is carried out for 2-5 h under heat preservation, then the reaction product is cooled to room temperature, and the epoxy modified sodium polyacrylate Z is obtained after discharging.
The reinforcing properties of the green body reinforcing agent in this example were measured according to standard methods: after being uniformly stirred, standard slurry of a certain ceramics company in Shandong area is measured by a measuring cup of 1000ml, 0.14g of the acrylamide grafted corn starch ceramic reinforcing agent obtained in the embodiment is added, the mixture is stirred for five minutes under a high-speed stirrer, then the mixture is injected into a standard inner triangular mold and is started to be timed by a stopwatch, the mold is opened thirty minutes later, the operation temperature is room temperature, the initial cracking time is 15min11s, and the final cracking time is 55min32 s.
Example 4
The high-efficiency ceramic body reinforcing agent composition comprises the following components in percentage by mass: 6.5% of acrylic pressure-sensitive adhesive emulsion (with the pH value of 8-9 and the mass portion of 36%), 2.5% of sodium lignosulfonate, 11% of epoxy modified sodium polyacrylate S and the balance of water.
The epoxy modified sodium polyacrylate S is prepared by adopting an aqueous solution free radical polymerization method, and the preparation method comprises the following steps: adding 3 parts of itaconic acid diglycidyl ester, 5 parts of allyl glycidyl ether, 0.1 part of sodium stearate, 0.1 part of sodium dodecyl benzene sulfonate, 3 parts of mercaptopropionic acid and 72 parts of water into a reactor, fully and uniformly dispersing, then adding 22 parts of sodium acrylate, and heating the system to 55 ℃; then dropwise adding hydrogen peroxide into the reaction kettle, keeping the temperature for 5 hours after the dropwise adding is finished for 0.7 hour, cooling to room temperature, and discharging to obtain the epoxy modified sodium polyacrylate S.
The reinforcing properties of the green body reinforcing agent in this example were measured according to standard methods: after the standard slurry of a certain ceramics company in Shandong area is stirred uniformly, 500ml of slurry is measured by using a measuring cup of 1000ml, 0.14g of the acrylamide grafted corn starch ceramic reinforcing agent obtained in the embodiment is added, the mixture is stirred for five minutes under a high-speed stirrer, then the mixture is injected into a standard inner triangular mold and is started to be timed by using a stopwatch, the mold is opened thirty minutes later, the operation temperature is room temperature, the initial cracking time is 14min06s, and the final cracking time is 54min27 s.
Claims (3)
1. The efficient ceramic body reinforcing agent composition is characterized by comprising the following components in percentage by mass: 4 to 8 percent of acrylic pressure-sensitive adhesive emulsion, 1 to 3 percent of modified natural polymer, 8 to 15 percent of epoxy modified sodium polyacrylate and the balance of water;
the structural formula of the epoxy modified sodium polyacrylate is as follows:
wherein R is hydrogen or methyl, A is carbonyl or methylene, x is 10-30, and y is 3-10;
the epoxy modified sodium polyacrylate is prepared by adopting an aqueous solution free radical polymerization method, and the preparation method comprises the following steps: adding 5-10 parts of epoxy micromolecules containing unsaturated double bonds, 0.05-0.3 part of surfactant, 2-4 parts of reducing agent and 60-80 parts of water into a reaction kettle, fully and uniformly dispersing, then adding 20-30 parts of sodium acrylate, and heating a heating system to 50-80 ℃; then, dropwise adding an initiator into the reaction kettle, keeping the temperature for reacting for 2-5 hours after the dropwise adding is finished for 0.5-1 hour, cooling to room temperature, and discharging to obtain epoxy modified sodium polyacrylate; the modified natural polymer is at least one of hydroxyethyl cellulose, water-soluble starch and sodium alginate which are modified through acylation reaction, carboxymethylation reaction, esterification reaction or grafting reaction; the epoxy micromolecule containing unsaturated double bonds is at least one of glycidyl methacrylate, glycidyl acrylate, allyl glycidyl ether and itaconic acid diglycidyl ester; the reducing agent is at least one of thioglycolic acid, mercaptopropionic acid, sodium bisulfite, sodium phosphite and rongalite.
2. The composition as claimed in claim 1, wherein the surfactant is at least one of sodium stearate, sodium laurate, sodium dodecylbenzenesulfonate, sodium didodecylphenylether disulfonate, OP-10, phenethylphenol polyoxyethylene ether, and tween.
3. The efficient ceramic body reinforcing agent composition according to claim 1, wherein the initiator is at least one of ammonium persulfate, potassium persulfate, hydrogen peroxide and sodium persulfate.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711208768.8A CN107935606B (en) | 2017-11-27 | 2017-11-27 | High-efficiency ceramic body reinforcing agent composition and product prepared from same |
| CN202010334898.1A CN111533564A (en) | 2017-11-27 | 2017-11-27 | High-strength anti-cracking ceramic |
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| CN201711208768.8A CN107935606B (en) | 2017-11-27 | 2017-11-27 | High-efficiency ceramic body reinforcing agent composition and product prepared from same |
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| CN202010334898.1A Division CN111533564A (en) | 2017-11-27 | 2017-11-27 | High-strength anti-cracking ceramic |
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| CN107935606A CN107935606A (en) | 2018-04-20 |
| CN107935606B true CN107935606B (en) | 2020-12-15 |
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| CN201711208768.8A Active CN107935606B (en) | 2017-11-27 | 2017-11-27 | High-efficiency ceramic body reinforcing agent composition and product prepared from same |
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| CN109704787A (en) * | 2019-01-23 | 2019-05-03 | 佛山市山有海科技有限公司 | A kind of ceramics reinforcing agent and its application |
| WO2021024194A1 (en) * | 2019-08-06 | 2021-02-11 | Kourosh Kabiri Bamoradian | Functionalized bio-based crosslinkers |
| CN114573720B (en) * | 2022-03-25 | 2023-04-07 | 佛山市南海华昊华丰淀粉有限公司 | Starch blank reinforcing agent, blank, preparation method and application thereof |
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| US5385990A (en) * | 1992-11-02 | 1995-01-31 | Lord Corporation | Structural adhesive composition having high temperature resistance |
| CN102584253B (en) * | 2012-02-15 | 2013-09-11 | 广东道氏技术股份有限公司 | Ceramic green body reinforcing agent and application thereof |
| CN105777142B (en) * | 2016-03-09 | 2019-01-11 | 韶关市合众化工有限公司 | A kind of high-efficiency ceramic green body reinforcing agent and preparation method and application |
| CN106010386A (en) * | 2016-06-25 | 2016-10-12 | 江阴市江泰高分子新材料有限公司 | Emulsion pressure-sensitive adhesive and PE protection film prepared from same |
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