CN113248181A - High-performance anti-carbonization agent for concrete and preparation method thereof - Google Patents
High-performance anti-carbonization agent for concrete and preparation method thereof Download PDFInfo
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- CN113248181A CN113248181A CN202110716847.XA CN202110716847A CN113248181A CN 113248181 A CN113248181 A CN 113248181A CN 202110716847 A CN202110716847 A CN 202110716847A CN 113248181 A CN113248181 A CN 113248181A
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
Abstract
The application relates to the field of concrete admixtures, and particularly discloses a high-performance anti-carbonization agent for concrete and a preparation method thereof, wherein the anti-carbonization agent comprises the following components in parts by weight: 0.08-0.15 part of water-absorbent resin, 3-5 parts of polypropylene glycol, 11-20 parts of base material, 4-8 parts of alumina, 5-8 parts of hydrotalcite, 6-14 parts of silica sol and 80-85 parts of water. The preparation method of the anti-carbonization agent comprises the following steps: step one, preparing a base material; step two, performing irradiation modification on 30-50% of the total amount of the silica sol and the water-absorbent resin to prepare modified resin; step three, uniformly blending the balance of silica sol, alumina and hydrotalcite and then carrying out ball milling to prepare composite slurry; and step four, uniformly mixing water, polypropylene alcohol, modified resin, composite slurry and base stock to prepare the anti-carbonization agent. The anti-carbonization agent prepared by the application is applied to the concrete, the carbonization depth of the concrete reduced to a great extent is reduced, and the anti-carbonization performance of the concrete is obviously improved.
Description
Technical Field
The application relates to the field of concrete admixtures, in particular to a high-performance anti-carbonization agent for concrete and a preparation method thereof.
Background
Carbonization of concrete means that CO contained in the air2The concrete continuously enters the interior of the concrete through the pores on the surface of the concrete and reacts with hydrates in the concrete to generate carbonate and water, which leads to the reduction of the alkalinity of the concrete. The carbonization of the concrete can not only cause the reduction of the strength of the concrete and the bearing capacity of the bridge, but also cause the concrete to generate certain micro cracks due to the contraction of the concrete, thereby providing a more convenient channel for the erosion of harmful substances, further accelerating the deterioration of the performance of the concrete, shortening the service life of buildings such as the bridge, the highway and the like, and even causing safety accidents.
At present, the common concrete 28d carbonization depth is about 8mm generally. With the continuous development of human industrialization and urbanization, CO is generated2The discharge amount is increasing day by day, and the carbonization problem of concrete has received extensive attention in the industry. Therefore, the problem to be solved urgently in the industry is to improve the anti-carbonization performance of the concrete.
Disclosure of Invention
In order to improve the anti-carbonization performance of concrete, the application provides a high-performance anti-carbonization agent for concrete and a preparation method thereof.
In a first aspect, the application provides a high-performance anti-carbonization agent for concrete, which adopts the following technical scheme:
a high-performance anti-carbonization agent for concrete comprises the following components in parts by weight: 0.08-0.15 part of water-absorbent resin, 3-5 parts of polypropylene glycol, 11-20 parts of base material, 4-8 parts of alumina, 5-8 parts of hydrotalcite, 6-14 parts of silica sol and 80-85 parts of water.
By adopting the technical scheme, the water-absorbent resin can expand after absorbing water, can play a certain role in blocking pores, and further inhibits CO2The water-absorbent resin contains a large number of hydrophilic groups such as hydroxyl group (-OH) and carboxyl group (-COOH) and hasHas a certain degree of crosslinking, can improve the hydration degree of the concrete, increases the alkali content in the concrete, and further delays CO2The corrosion effectively slows down the carbonization rate of the concrete and reduces the carbonization depth of the concrete.
The base material can be further extruded into the inner pores, cracks and other positions of the concrete, plays a certain role in filling and plugging, improves the compactness of the concrete, prevents free water from entering, improves the binding power to the cracks and effectively reduces the damage to the concrete.
The hydrotalcite has an excellent layered structure, the aluminum oxide provides a certain aluminum source for the hydrotalcite, and the aluminum oxide and the silica sol are matched under certain conditions, so that the structure of the hydrotalcite can be modified, the characteristic of absorbing carbonate ions is improved, the reaction of the carbonate ions formed after partial carbon dioxide in the air is dissolved in water and calcium hydroxide in the concrete is further reduced, the pulverization of the concrete is reduced, the concrete is protected, and the anti-carbonization capacity of the concrete is improved. Meanwhile, the silica sol has good permeability and dispersibility, can improve the dispersibility and the permeability of an anti-carbonization agent system, and permeates into the interior of a concrete base layer through the pores of the concrete, so that the anti-carbonization agent can better play a role, the carbonization of the concrete is delayed, and the anti-carbonization performance of the concrete is improved.
The application of the anti-carbonization agent in the common concrete greatly improves the internal structure of the concrete, improves the anti-carbonization performance of the concrete, and reduces the carbonization depth.
Preferably, the base stock comprises the following preparation steps: dissolving gelatin and Arabic gum in appropriate amount of water to obtain gelatin solution, dissolving zeolite powder and pullulan in appropriate amount of water to obtain slurry, stirring the gelatin solution, adding dropwise curing agent while adding the slurry, and stirring to obtain base material.
Preferably, the curing agent is formaldehyde, and the dropping amount of the formaldehyde is 1-3% of the mass of the gelatin.
By adopting the technical scheme, the gelatin and the Arabic gum are mixed in the aqueous solution, the compound is formed due to opposite charges, the formaldehyde can accelerate the micro-capsule curing of the compound to form an irreversible micro-capsule, the pore of the concrete is filled, the pullulan polysaccharide is dissolved in water and has good viscosity, so that the micro-capsule has good cohesive force in the forming process, and the pullulan polysaccharide has good film forming property and gas barrier property, and prevents the permeation of gas such as carbon dioxide in the air; the zeolite has a rough surface and a porous structure, so that the zeolite has strong carrying capacity, microcapsules can be uniformly adsorbed on the surface in the forming process, and the microcapsules can be quickly filled into holes and channels of concrete under the action of a pullulan solution, so that the filling effect of hole cracks is improved, the filling of pores is facilitated, the expansion of micro cracks is prevented, the carbonization of the concrete is delayed, and the carbonization resistance of the concrete is improved.
Preferably, the water-absorbent resin is prepared by the following percentage: the water-absorbent resin of 30-60 mesh is 28-40%, the water-absorbent resin of 60-100 mesh is 10-35%, and the balance is 150 mesh.
By adopting the technical scheme, the water-absorbent resins with different particle sizes are compounded, so that the internal structure of the concrete is further improved, and the anti-carbonization capacity of the concrete is improved.
Preferably, the zeolite powder is natural zeolite powder with the particle size of 10-50 mu m.
By adopting the technical scheme, the particle size of the zeolite powder is optimized, so that better filling of capillary pores in concrete is facilitated, and the compactness of the concrete is improved.
In a second aspect, the application provides a preparation method of a high-performance anti-carbonization agent for concrete, which adopts the following technical scheme:
a preparation method of a high-performance anti-carbonization agent for concrete comprises the following steps:
step one, preparing a base material;
step two, mixing 30-50% of the total amount of the silica sol with the water-absorbent resin, and then carrying out irradiation modification to prepare modified resin;
step three, uniformly blending the balance of silica sol, alumina and hydrotalcite and then carrying out ball milling to prepare composite slurry;
and step four, uniformly mixing water, polypropylene alcohol, modified resin, composite slurry and base stock to prepare the anti-carbonization agent.
By adopting the technical scheme, a large amount of hydroxyl groups are contained in the silica sol, the silica sol and the water-absorbent resin are mixed and then are subjected to irradiation modification, so that the water absorption performance and the water absorption rate of the water-absorbent resin are improved, and the generation of pores and cracks is reduced in the co-curing process of the modified resin and concrete.
The silica sol, the alumina and the hydrotalcite are subjected to ball milling, the internal structure of the hydrotalcite is changed, and meanwhile, hydrated calcium carbonate gel formed by the silica sol and the concrete base layer is distributed in a layered structure, so that the interior of the concrete is more compact, and meanwhile, the whole composite slurry is alkalescent, so that the cement is more completely hydrated, and pores in the interior of the concrete are reduced.
Preferably, in the first step, the temperature is 50-60 DEG C60Co-gamma ray 3-6KGy is irradiated for 5-8 h.
By adopting the technical scheme, the treatment conditions of the water-absorbent resin are further optimized so as to improve the comprehensive performance of the water-absorbent resin.
In summary, the present application has the following beneficial effects:
1. the application of the anti-carbonization agent in the common concrete greatly improves the internal structure of the concrete, improves the anti-carbonization performance of the concrete, and reduces the carbonization depth.
2. The base material is further extruded into the positions of pores, cracks and the like in the concrete, a certain filling and plugging effect is achieved, the compactness of the concrete is improved, free water is prevented from entering, meanwhile, the bonding force to the cracks is improved, and the damage to the concrete is effectively reduced.
3. The silica sol, the alumina and the hydrotalcite are subjected to ball milling, the internal structure of the hydrotalcite is changed, and meanwhile, hydrated calcium carbonate gel formed by the silica sol and the concrete base layer is distributed in a layered structure, so that the interior of the concrete is more compact, and meanwhile, the whole composite slurry is alkalescent, so that the cement is more completely hydrated, and pores in the interior of the concrete are reduced.
Detailed Description
The present application will be described in further detail with reference to examples.
Examples
Example 1
The preparation method of the high-performance anti-carbonization agent for concrete comprises the following steps:
dissolving 1kg of gelatin and 0.5kg of Arabic gum in 2kg of water to form a glue solution, dissolving 5.5kg of 10-50 mu m natural zeolite powder and 0.5kg of pullulan in 3kg of water to form slurry, uniformly stirring the glue solution at a rotating speed of 30r/min, adding formaldehyde dropwise while adding the slurry, wherein the dropwise adding amount of the formaldehyde is 10g, and uniformly stirring to obtain a base material;
step two, using 2kg of silica sol and 0.1kg of water-absorbent resin at the temperature of 50 DEG C60Irradiating with Co-gamma ray 3KGy for 5h to obtain modified resin; wherein the water-absorbent resin has 0.03kg of 30-60 meshes, 0.02kg of 60-100 meshes and 0.05kg of 120-150 meshes, and is available from Wuhanrong Brilliant Biotech Ltd;
step three, uniformly blending 4kg of silica sol, 4kg of alumina and 5kg of hydrotalcite, and then placing the mixture into a ball mill for ball milling to prepare composite slurry;
step four, uniformly mixing 75kg of water, 3kg of polypropylene glycol with the polymerization degree of 25, the modified resin, the composite slurry and the base material, and then carrying out ultrasonic treatment for 15min to prepare the anti-carbonization agent.
Example 2
The preparation method of the high-performance anti-carbonization agent for concrete comprises the following steps:
dissolving 2kg of gelatin and 1.5kg of Arabic gum in 3kg of water to form a glue solution, dissolving 5kg of 10-50 mu m natural zeolite powder and 0.5kg of pullulan in 5kg of water to form a slurry, uniformly stirring the glue solution at a rotating speed of 30r/min, adding the slurry while dropwise adding formaldehyde, wherein the dropwise adding amount of the formaldehyde is 40g, and uniformly stirring to obtain a base material;
step two, using 4.5kg of silica sol and 0.15kg of water-absorbent resin at the temperature of 60 DEG C60Irradiating the Co-gamma ray 6KGy for 8h to prepare modified resin; wherein the 30-60 mesh water-absorbent resin is 0.045kg, 0.03kg of 60-100 mesh water-absorbent resin, 0.075kg of 120-150 mesh water-absorbent resin, which was purchased from Wuhanrong Brilliant Biotech Ltd;
step three, uniformly blending 9.5kg of silica sol, 8kg of alumina and 8kg of hydrotalcite, and then placing the mixture into a ball mill for ball milling to prepare composite slurry;
and step four, uniformly mixing 95kg of water, 5kg of polypropylene glycol with the polymerization degree of 25, the modified resin, the composite slurry and the base material, and then carrying out ultrasonic treatment for 30min to prepare the anti-carbonization agent.
Example 3
The preparation method of the high-performance anti-carbonization agent for concrete comprises the following steps:
the difference from the embodiment 1 is that the step one is different, and the specific step of the step one is as follows: dissolving 2kg of gelatin and 1kg of Arabic gum in 2kg of water to form a glue solution, dissolving 6kg of natural zeolite powder with the particle size of 10-50 microns and 1kg of pullulan in 4.5kg of water to form a slurry, uniformly stirring the glue solution at the rotating speed of 30r/min, adding the slurry while dropwise adding formaldehyde, wherein the dropwise adding amount of the formaldehyde is 20g, and uniformly stirring to obtain a base material; the rest is the same as in example 1.
Example 4
The difference from the embodiment 1 is that the step one is different, and the specific step of the step one is as follows: dissolving 3kg of gelatin and 0.3kg of Arabic gum in 3kg of water to form a glue solution, dissolving 4kg of 10-50 mu m natural zeolite powder and 0.2kg of pullulan in 6kg of water to form a slurry, uniformly stirring the glue solution at a rotating speed of 30r/min, adding the slurry while dropwise adding formaldehyde, wherein the dropwise adding amount of the formaldehyde is 20g, and uniformly stirring to obtain a base material; the rest is the same as in example 1.
Example 5
The difference from the embodiment 1 is that the step one is different, and the specific step of the step one is as follows: dissolving 2kg of gelatin, 1kg of Arabic gum, 6kg of zeolite powder and 1kg of pullulan in 6.5kg of water, and uniformly stirring to obtain a base material; the rest is the same as in example 1.
Example 6
The difference from example 3 is that in the second step, the water-absorbent resins were all 120-150 mesh, and the rest were the same as example 3.
Example 7
The difference from example 3 is that in step two, the reaction is carried out at a temperature of 60 DEG C60Irradiating the Co-gamma ray 4KGy for 6.5 h; the rest is the same as in example 3.
Example 8
The difference from example 3 is that in step two, irradiation was performed using a 400W UV lamp, and the rest was the same as example 3.
Example 9
The difference from example 7 is that in step two, the amount of silica sol used was 8.8kg, and in step three, the amount of silica sol used was 1.2 kg; the rest is the same as in example 7.
Example 10
The difference from example 7 is that in step two, the amount of silica sol was 5kg, and in step three, the amount of silica sol was 5 kg; the rest is the same as in example 7.
Example 11
The difference from the embodiment 10 is that in the fourth step, 81.9kg of water, 4kg of polypropylene glycol with the polymerization degree of 25, the modified resin, the composite slurry and the base material are uniformly mixed to prepare the anti-carbonization agent; the rest is the same as in example 10.
Example 12
The difference from the embodiment 10 is that in the fourth step, 81.9kg of water, 3.5kg of polypropylene glycol with the polymerization degree of 25, the modified resin, the composite slurry and the base material are evenly mixed and then are subjected to ultrasonic treatment for 20min to prepare the anti-carbonization agent; the rest is the same as in example 10.
Comparative example
Comparative example 1
The difference from example 1 is that in step one, no pullulan was added, and the rest is the same as example 1.
Comparative example 2
The difference from example 1 is that in the second step, the silica sol and the water-absorbent resin are left for 5 hours at a temperature of 50 ℃ to prepare a modified resin; the rest is the same as in example 1.
Comparative example 3
The difference from example 1 is that in step three, silica sol and alumina are mixed uniformly to prepare a composite slurry, and the rest is the same as example 1.
Comparative example 4
The difference from the example 1 is that in the third step, silica sol, alumina and hydrotalcite are directly and uniformly mixed to prepare composite slurry, and the rest is the same as the example 1.
Comparative example 5
The difference from example 1 is that, unlike step three and step four,
the third step is specifically as follows: placing the hydrotalcite in a ball mill for ball milling;
the fourth step is specifically as follows: uniformly mixing water, polypropylene glycol, modified resin, ball-milled hydrotalcite, the balance of silica sol, alumina and a base material, and then carrying out ultrasonic treatment for 15min to prepare an anti-carbonization agent; the rest is the same as in example 1.
Performance test
Taking C30 concrete test pieces of the same batch, wherein the specification of the test pieces is a cube of 100mm multiplied by 100mm, each group is provided with 20 test pieces, a group of comparison groups are arranged, after the test pieces are demoulded, the anti-carbonization agents prepared in the examples 1-12 and the comparative examples 1-5 are equally and uniformly sprayed on the surfaces of the test pieces, one side surface is reserved for the test pieces of the comparison parallel groups, the rest surfaces are sealed by paraffin, and then the test pieces are all maintained for 28 days under natural conditions.
And after 28 days of curing, testing the carbonization resistance of the concrete according to the standard of testing methods for the long-term performance and the durability of the common concrete (GB/T50082-2009). In order to accelerate the concrete carbonization rate, the setting reference specification of the environmental conditions in the carbonization test process is stipulated, namely the concrete carbonization box is set as follows: temperature (30 +/-2) deg.C, relative humidity (70 +/-5)%, CO2Concentration (20 +/-3)%. And respectively testing the carbonization depth of the concrete after 28d of carbonization, and calculating the average value of the carbonization depth of each group of test pieces, wherein the test results are shown in table 1.
TABLE 1 test results
As can be seen from examples 1-5 and Table 1, in examples 3-5, the base materials prepared in step one are all 16.5kg, and in example 3, the dosage of each raw material is adjusted so that the anti-carbonization performance of the concrete is better after the anti-carbonization agent is used; in example 4, the amount of each raw material is outside the preferred range of the application, and in example 3, compared with example 4, the carbonization depth of the test piece using the anti-carbonization agent prepared in example 3 is significantly reduced, so that it can be seen that the base material prepared from raw materials within a specific range can improve the quality of the anti-carbonization agent, so that the carbonization depth of the concrete can be effectively delayed after the concrete test piece is sprayed with the anti-carbonization agent and cured together, in example 5, the curing agent formaldehyde is not dripped, and the raw material components of the base material are simply mixed together, as can be seen from table 1, the anti-carbonization agent prepared in example 3 is adopted, the carbonization resistance of the concrete is significantly better, and the base material can extrude into the inner pores, cracks and other positions of the concrete to play a certain role in filling and blocking, thereby effectively reducing the damage of the concrete. Therefore, under the condition of ensuring that the total amount of the base material is not changed, the dosage of each raw material component is changed or no curing agent is added, the prepared anti-carbonization agent is not good enough, and the performance of the anti-carbonization agent is obviously influenced for each raw material component and the preparation step of the base material.
It can be seen from examples 3 and 6 in combination with table 1 that water-absorbent resins with different particle sizes are compounded to improve the internal structure of concrete and enhance the anti-carbonization capability of concrete. It can be seen from the examples 3 and 6-10 in combination with table 1 that the properties of the anti-carbonization agents prepared by different radiation modes are obviously different, because the resin modified by the specific radiation mode not only has better water absorption effect and water absorption rate, but also can reduce the generation of pores and cracks and further effectively delay the carbonization of the concrete in the co-curing process with the concrete. The silica sol and the water-absorbent resin with different dosages are mixed and modified, and the carbonization resistance of the concrete is also influenced to a certain extent.
As can be seen from examples 10 to 12 in combination with table 1, the performance of the anti-carbonation agent subjected to ultrasonic treatment is better than that obtained by directly mixing the materials, because the raw material components are more uniformly mixed in the ultrasonic treatment, and the dispersibility and the permeability of the raw material are better, the permeability and the permeation rate of the raw material sprayed on the surface of the concrete sample are improved, the raw material is effectively combined with other raw materials of the concrete in the curing process, and the anti-carbonation performance of the concrete is effectively delayed after the curing.
As can be seen from example 1 and comparative example 1 in combination with table 1, in the preparation of the base material, in comparative example 1, pullulan is not added, the carbonization depth of the concrete is significantly increased, because pullulan has good viscosity when dissolved in water, so that microcapsules have good cohesive force during the formation process, and pullulan has good film forming property and gas barrier property, prevents the penetration of gas such as carbon dioxide in the air, further delays the carbonization of the concrete, and improves the carbonization resistance of the concrete.
It can be seen from example 1 and comparative example 2 in combination with table 1 that the depth of the concrete in comparative example 2 against carbonization is greatly increased by table 1, as compared to example 2 in which the silica sol and the water-absorbent resin are not irradiated and are merely left at the same temperature for the same time, and that the silica sol and the water-absorbent resin and the corresponding irradiation can synergistically improve the anti-carbonization performance of the concrete.
It can be seen from example 1 and comparative examples 3 to 5 in combination with table 1 that in comparative example 3, no hydrotalcite is added, in comparative example 4, only silica sol, alumina and hydrotalcite are mixed, in comparative example 5, only hydrotalcite is ball-milled, and when the obtained anti-carbonization agent is applied to the same concrete, the carbonization depth of the concrete is significantly deeper, so that silica sol, alumina and hydrotalcite can synergistically improve the carbonization resistance of the concrete.
It can be seen from examples 1 to 12 and a control group in combination with table 1 that the anti-carbonization agent prepared by the present application is applied to concrete, and can improve the internal structure of the concrete during the curing process with the concrete, improve the strength of the concrete, and simultaneously greatly reduce the carbonization depth of the concrete, and significantly improve the anti-carbonization performance of the concrete.
The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.
Claims (9)
1. The high-performance anti-carbonization agent for concrete is characterized by comprising the following components in parts by weight: 0.08-0.15 part of water-absorbent resin, 3-5 parts of polypropylene glycol, 11-20 parts of base material, 4-8 parts of alumina, 5-8 parts of hydrotalcite, 6-14 parts of silica sol and 75-95 parts of water.
2. The high-performance anti-carbonization agent for concrete according to claim 1, wherein: the base material comprises the following components in parts by weight: 1-2 parts of gelatin, 0.5-1.5 parts of Arabic gum, 0.5-1.5 parts of pullulan, 5-7 parts of zeolite powder and 4-8 parts of water.
3. The high-performance anti-carbonization agent for concrete according to claim 2, wherein: the base material comprises the following preparation steps: dissolving gelatin and Arabic gum in appropriate amount of water to obtain gelatin solution, dissolving zeolite powder and pullulan in appropriate amount of water to obtain slurry, stirring the gelatin solution, adding dropwise curing agent while adding the slurry, and stirring to obtain base material.
4. The high-performance anti-carbonization agent for concrete according to claim 3, wherein: the curing agent is formaldehyde, and the dropping amount of the formaldehyde is 1-3% of the mass of the gelatin.
5. A high performance anti-carbonation agent for concrete according to any one of claims 1 to 4, wherein: the water-absorbent resin is prepared from the following components in percentage by weight: the water-absorbent resin of 30-60 mesh is 28-40%, the water-absorbent resin of 60-100 mesh is 10-35%, and the balance is 150 mesh.
6. The high-performance anti-carbonization agent for concrete according to claim 2, wherein: the zeolite powder is natural zeolite powder with the particle size of 10-50 mu m.
7. A method for preparing a high-performance anti-carbonation agent for concrete according to any one of claims 1 to 6, wherein: the method comprises the following steps:
step one, preparing a base material;
step two, performing irradiation modification on 30-50% of the total amount of the silica sol and the water-absorbent resin to prepare modified resin;
step three, uniformly blending the balance of silica sol, alumina and hydrotalcite and then carrying out ball milling to prepare composite slurry;
and step four, uniformly mixing water, polypropylene alcohol, modified resin, composite slurry and base stock to prepare the anti-carbonization agent.
8. The method for preparing a high-performance anti-carbonization agent for concrete according to claim 7, wherein: in the first step, the mixture is used at the temperature of 50-60 DEG C60Co-gamma ray 3-6KGy is irradiated for 5-8 h.
9. The method for preparing a high-performance anti-carbonization agent for concrete according to claim 7, wherein: in the fourth step, water, polypropylene alcohol, modified resin, composite slurry and base material are mixed and then subjected to ultrasonic treatment for 15-30min to prepare the anti-carbonization agent.
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| CN114920541A (en) * | 2022-05-28 | 2022-08-19 | 河北浩锐陶瓷制品有限公司 | High-wear-resistance ceramic material for ceramic tiles, preparation method of high-wear-resistance ceramic material and high-wear-resistance ceramic tiles |
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