A wear-resistant ceramic clay and its preparation method

Abstract

The present invention relates to the technical field of ceramic clay, and specifically relates to a wear-resistant ceramic clay and a preparation method thereof, comprising the following raw materials in parts by weight: 35-40 parts of diatomite, 15-20 parts of silicon carbide, 8-12 parts of a regulator based on mullite body modification, 5-8 parts of a modified cordierite agent, 4-7 parts of alumina, 4-7 parts of calcined talc, 3-5 parts of potassium feldspar, and 30-35 parts of water. The wear-resistant ceramic clay of the present invention uses diatomite and silicon carbide in combination with alumina, calcined talc, and potassium feldspar, and adds a regulator based on mullite body modification and a modified cordierite agent. Through the co-adjustment and cooperation among the raw materials, and through the mutual improvement among the raw materials, the obtained ceramic clay has coordinated improvements in wear resistance, stain resistance, and thermal conductivity, and at the same time, the product has a remarkable effect on anti-destruction stability.

Description

Technical Field

[0001] The present invention relates to the technical field of ceramic clay, and particularly relates to a wear-resistant ceramic clay and a preparation method thereof. Background Art

[0002] Ceramic materials are a class of inorganic non-metallic materials made from natural or synthetic compounds through forming and high-temperature sintering. They have a high melting point, excellent chemical stability at high temperatures, and good dimensional stability.

[0003] Existing ceramic clay materials have poor wear resistance. In order to improve the wear resistance of the products, it is easy to cause poor stain resistance and thermal conductivity of the ceramic clay materials. At the same time, the anti-destruction stability of the products is poor, which limits the use efficiency of the products. Summary of the Invention

[0004] Aiming at the defects of the prior art, the purpose of the present invention is to provide a wear-resistant ceramic clay and a preparation method thereof to solve the problems raised in the above background art.

[0005] The present invention solves the technical problems by adopting the following technical solutions:

[0006] The present invention provides a wear-resistant ceramic clay, which comprises the following raw materials in parts by weight:

[0007] 35-40 parts of diatomite, 15-20 parts of silicon carbide, 8-12 parts of a regulator based on mullite body modification, 5-8 parts of a modified cordierite agent, 4-7 parts of alumina, 4-7 parts of calcined talc, 3-5 parts of potassium feldspar, and 30-35 parts of water.

[0008] Preferably, the wear-resistant ceramic clay comprises the following raw materials in parts by weight:

[0009] 37.5 parts of diatomite, 17.5 parts of silicon carbide, 10 parts of a regulator based on mullite body modification, 6.5 parts of a modified cordierite agent, 5.5 parts of alumina, 5.5 parts of calcined talc, 4 parts of potassium feldspar, and 32.5 parts of water.

[0010] Preferably, the preparation method of the regulator based on mullite body modification is as follows:

[0011] S01: Preheat mullite at 65-70 °C for 1 h, and then mix and sinter 4-7 parts of the preheated mullite, 3-5 parts of lanthanum oxide, and 2-5 parts of nano-titanium dioxide by weight for 1 h at a sintering temperature of 550-570 °C. After sintering, cool to room temperature to obtain a mullite sintered body;

[0012] S02: Prepare the following modification liquid:

[0013] S021: First, place the basalt fibers in a proton irradiation chamber for 1 h with an irradiation power of 350 - 400 W. After the irradiation ends, add the irradiated basalt fibers to a sufficient amount of acid solution, mix well, then wash with water, filter by suction, and dry.

[0014] S022: By weight, add 2 - 5 parts of metakaolin and 1 - 3 parts of yttrium nitrate solution to 5 - 8 parts of sodium lignosulfonate solution. Subsequently, add 3 - 4 parts of the basalt fibers treated by S021, and stir well to obtain a modified solution.

[0015] S03: Stir and modify the mullite sintered body and the modified solution at a weight ratio of 2:5, with a stirring speed of 550 - 750 r / min for 20 - 30 min. After the stirring ends, obtain the modified mullite sintered body.

[0016] S04: Mix and ball-mill the modified mullite sintered body and the regulating and stabilizing agent at a weight ratio of 5:3. After the ball-milling ends, filter by suction and dry to obtain the regulator based on the modified mullite body.

[0017] Preferably, in S021, the acid solution is a sulfuric acid solution with a mass fraction of 5 - 8%.

[0018] Preferably, in S022, the mass fraction of the yttrium nitrate solution is 5 - 8%; the mass fraction of the sodium lignosulfonate solution is 2 - 5%.

[0019] Preferably, in S04, the ball-milling speed for the mixing and ball-milling treatment is 1150 - 1250 r / min, and the ball-milling time is 1 h.

[0020] Preferably, the preparation method of the regulating and stabilizing agent is as follows:

[0021] Prepare a hydrochloric acid dopamine solution with a mass fraction of 5 - 8%. Then, by weight, add 2 - 4 parts of borate whiskers and 1 - 3 parts of cerium oxide to 5 - 8 parts of the hydrochloric acid dopamine solution. Subsequently, add 2 - 3 parts of carbon nanotubes and 0.5 - 0.8 parts of barium nitrate solution and mix well. Finally, filter by suction and dry to obtain the regulating and stabilizing agent.

[0022] Preferably, the mass fraction of the barium nitrate solution is 4 - 6%.

[0023] Preferably, the preparation method of the modified cordierite agent is as follows:

[0024] S11: Place the cordierite in a sufficient amount of hydrogen peroxide solution for 1 h at a treatment temperature of 50°C. After the treatment ends, wash with water, and then treat it in a potassium permanganate solution for 2 h at a treatment temperature of 52°C. After the treatment ends, wash with water and dry to obtain the pretreated cordierite.

[0025] S12: adding 1-3 parts of silane coupling agent KH550 and 2-4 parts of sodium stearate to 5-8 parts of 5% chitosan solution by weight, and then adding 2-4 parts of boron nitride, and mixing them thoroughly to obtain cordierite liquid;

[0026] The pretreated cordierite and cordierite liquid are fully stirred in a weight ratio of 3:5, and finally filtered and dried to obtain a modified cordierite agent.

[0027] Preferably, in S11, the mass fraction of the hydrogen peroxide solution is 2-5%; the mass fraction of the potassium permanganate solution is 5-7%.

[0028] The present invention also provides a method for preparing wear-resistant ceramic clay, comprising the following steps:

[0029] Add diatomaceous earth, silicon carbide, a regulator based on mullite modification, a modified cordierite agent, alumina, calcined talc, potassium feldspar and water into a ball mill, and ball-mill at a speed of 1500-1800r / min for 35-40min. After the ball milling is completed, wash and dry the mixture, and then put it into a pressing machine for molding. Press for 1h at a pressing pressure of 30MPa. After the pressing is completed, sinter it at 1150-1200℃ for 1h. After the sintering is completed, wear-resistant ceramic clay is obtained.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] The wear-resistant ceramic clay of the present invention uses diatomite, silicon carbide, combined with alumina, calcined talc and potassium feldspar, and adds a regulator modified based on mullite and a modified cordierite agent. Through the co-adjustment and cooperation of raw materials, and through the mutual improvement between raw materials, the wear resistance, stain resistance and thermal conductivity of the obtained ceramic clay are coordinately improved, and at the same time, the anti-destruction stability effect of the product is remarkable; the regulator modified based on mullite is prepared by preheating mullite, and then co-mixing and sintering with lanthanum oxide and nano-titanium dioxide for improvement, and through the coordination and optimization of the modified liquid. The basalt fiber in the modified liquid is irradiated and acid-activated to enhance the harmony between the fiber and metakaolin, yttrium nitrate solution and sodium lignosulfonate solution. Through the co-allocation and mutual assistance of raw materials, the cooperation effect between the modified mullite sintered body and the regulating agent is enhanced, thereby optimizing the performance effect of the product. The regulating agent is improved by co-blending aluminum borate whiskers, cerium oxide, hydrochloric acid dopamine solution, carbon nanotubes and barium nitrate solution. With a whisker-like structure combined with a tubular structure, the interfacial property and load-bearing property between raw materials are enhanced, so as to bear and reconcile the modified mullite sintered body, and then better disperse the regulator modified based on mullite in the system and allocate it into the system, further enhancing the performance effect of the product; the modified cordierite agent is prepared by continuously treating cordierite with hydrogen peroxide solution and potassium permanganate solution to optimize the activity efficiency of cordierite. At the same time, silane coupling agent KH550, sodium stearate, 5% chitosan solution by mass fraction and boron nitride are used for blending and coordination. Through the co-allocation and synergy of raw materials, the obtained cordierite liquid is further formulated to improve the pretreated cordierite, so that the performance of the product is further improved. Then, the synergistic effect between the modified cordierite agent and the regulator modified based on mullite is more excellent, so that the performance of the product is further improved. Detailed implementation mode

[0032] The following combines specific embodiments to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

[0033] A wear-resistant ceramic clay of this embodiment includes the following raw materials in parts by weight:

[0034] 35-40 parts of diatomite, 15-20 parts of silicon carbide, 8-12 parts of a regulator modified based on mullite, 5-8 parts of a modified cordierite agent, 4-7 parts of alumina, 4-7 parts of calcined talc, 3-5 parts of potassium feldspar, and 30-35 parts of water.

[0035] The preparation method of the regulator modified based on mullite in this embodiment is as follows:

[0036] S01: Preheat mullite at 65 - 70 °C for 1 h. Then, blend 4 - 7 parts of the preheated mullite, 3 - 5 parts of lanthanum oxide, and 2 - 5 parts of nano-titanium dioxide by weight and sinter for 1 h at a sintering temperature of 550 - 570 °C. After sintering, cool to room temperature to obtain a mullite sintered body;

[0037] S02: Prepare the modification liquid as follows:

[0038] S021: First, place basalt fibers in a proton irradiation chamber and irradiate for 1 h with an irradiation power of 350 - 400 W. After irradiation, add the irradiated basalt fibers to a sufficient amount of acid solution, mix well, then wash with water, filter by suction, and dry;

[0039] S022: Add 2 - 5 parts of metakaolin and 1 - 3 parts of yttrium nitrate solution by weight to 5 - 8 parts of sodium lignosulfonate solution, and then add 3 - 4 parts of basalt fibers treated in S021, stir well to obtain the modification liquid;

[0040] S03: Stir and modify the mullite sintered body and the modification liquid at a weight ratio of 2:5, with a stirring speed of 550 - 750 r / min for 20 - 30 min. After stirring, obtain a modified mullite sintered body;

[0041] S04: Mix and ball-mill the modified mullite sintered body and the adjustment and efficacy stabilizer at a weight ratio of 5:3. After ball-milling, filter by suction and dry to obtain a regulator based on the modified mullite body.

[0042] The acid solution in S021 of this example is a sulfuric acid solution with a mass fraction of 5 - 8%.

[0043] The mass fraction of the yttrium nitrate solution in S022 of this example is 5 - 8%; the mass fraction of the sodium lignosulfonate solution is 2 - 5%.

[0044] The ball-milling speed for the mixing and ball-milling treatment in S04 of this example is 1150 - 1250 r / min, and ball-mill for 1 h.

[0045] The preparation method of the adjustment and efficacy stabilizer in this example is:

[0046] Prepare a hydrochloric acid dopamine solution with a mass fraction of 5 - 8%, then add 2 - 4 parts of borate whiskers and 1 - 3 parts of cerium oxide by weight to 5 - 8 parts of the hydrochloric acid dopamine solution, and then add 2 - 3 parts of carbon nanotubes and 0.5 - 0.8 parts of barium nitrate solution and mix well. Finally, filter by suction and dry to obtain the adjustment and efficacy stabilizer.

[0047] The mass fraction of the barium nitrate solution in this example is 4 - 6%.

[0048] The preparation method of the modified cordierite agent in this example is:

[0049] S11: placing the cordierite in a sufficient amount of hydrogen peroxide solution for treatment at a temperature of 50° C. for 1 hour, washing with water after the treatment is completed, and then treating it in a potassium permanganate solution for 2 hours at a temperature of 52° C. After the treatment is completed, washing with water and drying to obtain pretreated cordierite;

[0050] S12: adding 1-3 parts of silane coupling agent KH550 and 2-4 parts of sodium stearate to 5-8 parts of 5% chitosan solution by weight, and then adding 2-4 parts of boron nitride, and mixing them thoroughly to obtain cordierite liquid;

[0051] The pretreated cordierite and cordierite liquid are fully stirred in a weight ratio of 3:5, and finally filtered and dried to obtain a modified cordierite agent.

[0052] The mass fraction of the hydrogen peroxide solution in S11 of this embodiment is 2-5%; the mass fraction of the potassium permanganate solution is 5-7%.

[0053] A method for preparing wear-resistant ceramic clay in this embodiment comprises the following steps:

[0054] Add diatomaceous earth, silicon carbide, a regulator based on mullite modification, a modified cordierite agent, alumina, calcined talc, potassium feldspar and water into a ball mill, and ball-mill at a speed of 1500-1800r / min for 35-40min. After the ball milling is completed, wash and dry the mixture, and then put it into a pressing machine for molding. Press for 1h at a pressing pressure of 30MPa. After the pressing is completed, sinter it at 1150-1200℃ for 1h. After the sintering is completed, wear-resistant ceramic clay is obtained.

[0055] Embodiment 1: A wear-resistant ceramic clay, comprising the following raw materials in parts by weight:

[0056] 35 parts of diatomaceous earth, 15 parts of silicon carbide, 8 parts of a modifier based on modification of mullite, 5 parts of a modified cordierite agent, 4 parts of alumina, 4 parts of calcined talc, 3 parts of potassium feldspar and 30 parts of water.

[0057] The preparation method of the conditioning agent based on mullite body modification of this embodiment is:

[0058] S01: preheating mullite at 65°C for 1 hour, then mixing and sintering 4 parts of preheated mullite, 3 parts of lanthanum oxide and 2 parts of nano-titanium dioxide by weight for 1 hour at a sintering temperature of 550°C. After sintering, cooling to room temperature was performed to obtain a mullite sintered body;

[0059] S02: Prepare the modified solution as follows:

[0060] S021: First, place the basalt fiber in a proton irradiation chamber for 1 h with an irradiation power of 350 W. After the irradiation ends, add the irradiated basalt fiber to a sufficient amount of acid solution, mix well, then wash with water, filter by suction, and dry;

[0061] S022: By weight, add 2 parts of metakaolin and 1 part of yttrium nitrate solution to 5 parts of sodium lignosulfonate solution, and then add 3 parts of the basalt fiber treated by S021. Stir well to obtain a modified solution;

[0062] S03: Stir and modify the mullite sintered body and the modified solution according to a weight ratio of 2:5 at a stirring speed of 550 r / min for 20 min. After the stirring ends, obtain the modified mullite sintered body;

[0063] S04: Mix and ball-mill the modified mullite sintered body and the regulating and stabilizing agent according to a weight ratio of 5:3. After the ball-milling ends, filter by suction and dry to obtain the regulator based on the modification of the mullite body.

[0064] The acid solution in this example is a sulfuric acid solution with a mass fraction of 5%.

[0065] The mass fraction of the yttrium nitrate solution in this example is 5%; the mass fraction of the sodium lignosulfonate solution is 2%.

[0066] The ball-milling speed of the mixing and ball-milling treatment in this example is 1150 r / min, and the ball-milling time is 1 h.

[0067] The preparation method of the regulating and stabilizing agent in this example is as follows:

[0068] Prepare a hydrochloric acid dopamine solution with a mass fraction of 5%, and then by weight, add 2 parts of borate whiskers and 1 part of cerium oxide to 5 parts of the hydrochloric acid dopamine solution. Then add 2 parts of carbon nanotubes and 0.5 part of barium nitrate solution and mix well. Finally, filter by suction and dry to obtain the regulating and stabilizing agent.

[0069] The mass fraction of the barium nitrate solution in this example is 4%.

[0070] The preparation method of the modified cordierite agent in this example is as follows:

[0071] S11: Place the cordierite in a sufficient amount of hydrogen peroxide solution for 1 h at a treatment temperature of 50 °C. After the treatment ends, wash with water, and then treat it in a potassium permanganate solution for 2 h at a treatment temperature of 52 °C. After the treatment ends, wash with water and dry to obtain the pretreated cordierite;

[0072] S12: By weight, add 1 part of silane coupling agent KH550 and 2 parts of sodium stearate to 5 parts of a chitosan solution with a mass fraction of 5%, and then add 2 parts of boron nitride and mix well to obtain the cordierite solution;

[0073] The pretreated cordierite and cordierite liquid are fully stirred in a weight ratio of 3:5, and finally filtered and dried to obtain a modified cordierite agent.

[0074] The mass fraction of the hydrogen peroxide solution in this embodiment is 2%; the mass fraction of the potassium permanganate solution is 5%.

[0075] A method for preparing wear-resistant ceramic clay in this embodiment comprises the following steps:

[0076] Add diatomaceous earth, silicon carbide, a regulator based on mullite modification, a modified cordierite agent, alumina, calcined talc, potassium feldspar and water into a ball mill, and ball-mill at a speed of 1500r / min for 35 minutes. After the ball milling is completed, wash and dry the mixture, and then put it into a pressing machine for molding. Press for 1 hour at a pressing pressure of 30MPa. After the pressing is completed, sinter it at 1150°C for 1 hour. After the sintering is completed, wear-resistant ceramic clay is obtained.

[0077] Embodiment 2: A wear-resistant ceramic clay, comprising the following raw materials in parts by weight:

[0078] 40 parts of diatomaceous earth, 20 parts of silicon carbide, 12 parts of a modifier based on modification of mullite, 8 parts of a modified cordierite agent, 7 parts of alumina, 7 parts of calcined talc, 5 parts of potassium feldspar and 35 parts of water.

[0079] The preparation method of the conditioning agent based on mullite body modification of this embodiment is:

[0080] S01: preheating mullite at 70°C for 1 hour, then mixing and sintering 7 parts of preheated mullite, 5 parts of lanthanum oxide and 5 parts of nano-titanium dioxide by weight for 1 hour, the sintering temperature is 570°C, and after sintering, cooling to room temperature to obtain a mullite sintered body;

[0081] S02: Prepare the modified solution as follows:

[0082] S021: irradiate the basalt fiber in a proton irradiation box for 1 hour at a power of 400W. After the irradiation is completed, add the irradiated basalt fiber into a sufficient amount of acid solution and mix well, then wash, filter and dry;

[0083] S022: Add 5 parts of metakaolin and 3 parts of yttrium nitrate solution to 8 parts of sodium lignin sulfonate solution by weight, then add 4 parts of basalt fiber treated with S021, stir well, and obtain a modified solution;

[0084] S03: The mullite sintered body and the modifying liquid are stirred and modified in a weight ratio of 2:5, the stirring speed is 750r / min, the stirring is performed for 30min, and the stirring is completed to obtain a modified mullite sintered body;

[0085] S04: The modified mullite sintered body and the regulating and stabilizing agent are mixed and ball-milled in a weight ratio of 5:3. After the ball-milling is completed, the mixture is filtered and dried to obtain a regulating agent based on mullite body modification.

[0086] The acid solution in this embodiment is a sulfuric acid solution with a mass fraction of 8%.

[0087] The mass fraction of the yttrium nitrate solution in this embodiment is 8%; the mass fraction of the sodium lignin sulfonate solution is 5%.

[0088] The mixing ball milling process in this embodiment has a ball milling speed of 1250 r / min and the ball milling is performed for 1 hour.

[0089] The preparation method of the regulating effect-fixing agent of this embodiment is:

[0090] A dopamine hydrochloride solution with a mass fraction of 8% was prepared, and then 4 parts of aluminum borate whiskers and 3 parts of cerium oxide were added to 8 parts of the dopamine hydrochloride solution by weight, followed by adding 3 parts of carbon nanotubes and 0.8 parts of barium nitrate solution and mixing thoroughly, and finally filtered and dried to obtain a regulating and fixing agent.

[0091] The mass fraction of the barium nitrate solution in this embodiment is 6%.

[0092] The preparation method of the modified cordierite agent of this embodiment is:

[0093] S11: placing the cordierite in a sufficient amount of hydrogen peroxide solution for treatment at a temperature of 50° C. for 1 hour, washing with water after the treatment is completed, and then treating it in a potassium permanganate solution for 2 hours at a temperature of 52° C. After the treatment is completed, washing with water and drying to obtain pretreated cordierite;

[0094] S12: 3 parts by weight of silane coupling agent KH550 and 4 parts of sodium stearate are added to 8 parts of 5% chitosan solution, and then 4 parts of boron nitride are added and mixed thoroughly to obtain cordierite liquid;

[0095] The pretreated cordierite and cordierite liquid are fully stirred in a weight ratio of 3:5, and finally filtered and dried to obtain a modified cordierite agent.

[0096] The mass fraction of the hydrogen peroxide solution in this embodiment is 5%; the mass fraction of the potassium permanganate solution is 7%.

[0097] A method for preparing wear-resistant ceramic clay in this embodiment comprises the following steps:

[0098] Diatomaceous earth, silicon carbide, a regulator based on mullite body modification, a modified cordierite agent, alumina, calcined talc, potassium feldspar, and water are added to a ball mill and ball milled at a speed of 1800 r / min for 40 min. After the ball milling is completed, it is washed with water, dried, and then formed in a press for 1 h under a pressing pressure of 30 MPa. After the pressing is completed, it is sintered at 1200 °C for 1 h. After the sintering is completed, wear-resistant ceramic clay is obtained.

[0099] Example 3: A wear-resistant ceramic clay, comprising the following raw materials in parts by weight:

[0100] 37.5 parts of diatomaceous earth, 17.5 parts of silicon carbide, 10 parts of a regulator based on mullite body modification, 6.5 parts of a modified cordierite agent, 5.5 parts of alumina, 5.5 parts of calcined talc, 4 parts of potassium feldspar, and 32.5 parts of water.

[0101] The preparation method of the regulator based on mullite body modification in this example is as follows:

[0102] S01: Preheat mullite at 67.5 °C for 1 h, and then blend and sinter 5.5 parts of the preheated mullite, 4 parts of lanthanum oxide, and 3.5 parts of nano-titanium dioxide by weight for 1 h at a sintering temperature of 560 °C. After the sintering is completed, cool to room temperature to obtain a mullite sintered body;

[0103] S02: Prepare the modification liquid as follows:

[0104] S021: Place basalt fiber in a proton irradiation chamber and irradiate for 1 h with an irradiation power of 375 W. After the irradiation is completed, add the irradiated basalt fiber to a sufficient amount of acid solution, mix well, then wash with water, filter by suction, and dry;

[0105] S022: Add 3.5 parts of metakaolin and 2 parts of yttrium nitrate solution by weight to 6.5 parts of sodium lignosulfonate solution, and then add 3.5 parts of the basalt fiber treated in S021, and stir well to obtain the modification liquid;

[0106] S03: Stir and modify the mullite sintered body and the modification liquid according to a weight ratio of 2:5 at a stirring speed of 600 r / min for 25 min. After the stirring is completed, obtain a modified mullite sintered body;

[0107] S04: Mix and ball mill the modified mullite sintered body and the adjustment and effectiveness agent according to a weight ratio of 5:3. After the ball milling is completed, filter by suction and dry to obtain a regulator based on mullite body modification.

[0108] The acid solution in this example is a sulfuric acid solution with a mass fraction of 6.5%.

[0109] The mass fraction of the yttrium nitrate solution in this example is 6.5%; the mass fraction of the sodium lignosulfonate solution is 3.5%.

[0110] The ball milling speed of the mixing ball milling treatment in this embodiment is 1200 r / min, and the ball milling is 1 hour.

[0111] The preparation method of the regulating effect-fixing agent of this embodiment is:

[0112] A 6.5% mass fraction dopamine hydrochloride solution was prepared, and then 3 parts of aluminum borate whiskers and 2 parts of cerium oxide were added to 6.5 parts of dopamine hydrochloride solution by weight, followed by adding 2.5 parts of carbon nanotubes and 0.65 parts of barium nitrate solution and mixing thoroughly, and finally filtered and dried to obtain a regulating and fixing agent.

[0113] The mass fraction of the barium nitrate solution in this embodiment is 5%.

[0114] The preparation method of the modified cordierite agent of this embodiment is:

[0115] S11: placing the cordierite in a sufficient amount of hydrogen peroxide solution for treatment at a temperature of 50° C. for 1 hour, washing with water after the treatment is completed, and then treating it in a potassium permanganate solution for 2 hours at a temperature of 52° C. After the treatment is completed, washing with water and drying to obtain pretreated cordierite;

[0116] S12: adding 2 parts of silane coupling agent KH550 and 3 parts of sodium stearate to 6.5 parts of 5% chitosan solution by weight, and then adding 3 parts of boron nitride, and mixing them thoroughly to obtain cordierite liquid;

[0117] The pretreated cordierite and cordierite liquid are fully stirred in a weight ratio of 3:5, and finally filtered and dried to obtain a modified cordierite agent.

[0118] The mass fraction of the hydrogen peroxide solution in this embodiment is 3.5%; the mass fraction of the potassium permanganate solution is 6%.

[0119] A method for preparing wear-resistant ceramic clay in this embodiment comprises the following steps:

[0120] Add diatomaceous earth, silicon carbide, a regulator based on mullite modification, a modified cordierite agent, alumina, calcined talc, potassium feldspar and water into a ball mill and mill at a speed of 1650r / min for 37.5min. After the ball milling is completed, wash and dry the mixture and put it into a pressing machine for molding. Press for 1h at a pressing pressure of 30MPa. After the pressing is completed, sinter the mixture at 1175°C for 1h. After the sintering is completed, wear-resistant ceramic clay is obtained.

[0121] Comparative Example 1:

[0122] The difference from Example 3 is that no modifier based on mullite modification is added.

[0123] Comparative Example 2:

[0124] Different from Example 3, no modified mullite sintered body was added in the preparation of the regulator based on mullite body modification.

[0125] Comparative Example 3:

[0126] Different from Example 3, the modified mullite sintered body was not treated with the modification liquid in the preparation.

[0127] Comparative Example 4:

[0128] Different from Example 3, basalt fibers treated with S021 were not added to the modification liquid.

[0129] Comparative Example 5:

[0130] Different from Example 3, metakaolin and yttrium nitrate solution were not added to the modification liquid.

[0131] Comparative Example 6:

[0132] Different from Example 3, no mullite sintered body was added in the preparation of the modified mullite sintered body.

[0133] Comparative Example 7:

[0134] Different from Example 3, lanthanum oxide and nano-titanium dioxide were not added in the preparation of the mullite sintered body.

[0135] Comparative Example 8:

[0136] Different from Example 3, no regulating and effect-determining agent was added in the preparation of the regulator based on mullite body modification.

[0137] Comparative Example 9:

[0138] Different from Example 3, no modified cordierite agent was added.

[0139] Comparative Example 10:

[0140] Different from Example 3, no cordierite liquid was added in the preparation of the modified cordierite agent.

[0141] Comparative Example 11:

[0142] Different from Example 3, boron nitride and silane coupling agent KH550 were not added to the cordierite liquid.

[0143] The products of Examples 1 to 3 and Comparative Examples 1 to 11 were subjected to performance tests under conventional conditions, testing wear resistance, stain resistance and thermal conductivity. At the same time, the products were treated with a breaking strength of 500 N for 12 h to conduct performance tests under anti-breaking conditions. The test results are shown in Table 1.

[0144] Table 1 Test results of product performance of Examples 1 to 3 and Comparative Examples 1 to 11;

[0145]

[0146] It can be seen from Comparative Examples 1-11 and Examples 1-3 that the product of Example 3 has excellent thermal conductivity, wear resistance and anti-fouling level, the thermal conductivity, wear resistance and anti-fouling performance of the product are coordinately improved, and the anti-destruction stability effect of the product is remarkable;

[0147] It can be seen from Comparative Examples 1-11 and Example 3 that when the regulator based on mullite body modification and the modified cordierite agent are not added to the product, the performance of the product shows an obvious downward trend. When the two are used in coordination, the performance effect of the product is the most remarkable;

[0148] When the modified mullite sintered body is not added in the preparation of the regulator based on mullite body modification, the modified mullite sintered body is not treated with the modified liquid in the preparation of the modified mullite sintered body, the basalt fiber treated with S021 is not added to the modified liquid, the metakaolin, yttrium nitrate solution are not added to the modified liquid, the mullite sintered body is not added in the preparation of the modified mullite sintered body, lanthanum oxide and nano-titanium dioxide are not added in the preparation of the mullite sintered body, and the regulation effect stabilizer is not added in the preparation of the regulator based on mullite body modification, the performance of the product shows a downward trend to varying degrees. The modified mullite sintered body made of the modified liquid obtained by the specific method of the present invention and the mullite sintered body, and the regulator based on mullite body modification obtained by the regulation effect stabilizer of the present invention have the most remarkable performance effect;

[0149] At the same time, when the cordierite liquid is not added in the preparation of the modified cordierite agent, and boron nitride and silane coupling agent KH550 are not added to the cordierite liquid, the performance of the product shows a downward trend to varying degrees. The modified cordierite agent made of the cordierite liquid obtained by the specific method of the present invention has obvious performance effect, and the modified cordierite agent and the regulator based on mullite body modification obtained by the specific method are used in coordination and synergistic effect, and the performance effect of the product is the most remarkable.

[0150] Based on the above tests, continue to test the performance effect of the regulation effect stabilizer on the product.

[0151] Experimental Example 1:

[0152] Same as Example 3, except that aluminum borate whiskers are not added in the preparation of the regulation effect stabilizer.

[0153] Experimental Example 2:

[0154] Same as Example 3, except that carbon nanotubes are not added in the preparation of the regulation effect stabilizer.

[0155] Experimental Example 3:

[0156] Same as Example 3, except that cerium oxide was not added in the preparation of the conditioning agent.

[0157] Experimental Example 4:

[0158] Same as Example 3, except that barium nitrate solution was not added in the preparation of the conditioning agent.

[0159] Experimental Example 5:

[0160] Same as Example 3, except that water was used instead of dopamine hydrochloride solution in the preparation of the conditioning agent.

[0161] The products of Experimental Examples 1-5 were subjected to performance tests under conventional conditions, testing wear resistance, stain resistance and thermal conductivity. At the same time, the products were treated with a breaking strength of 500 N for 12 h, and performance tests under anti-breaking conditions were carried out. The test results are shown in Table 2.

[0162] Table 2 Performance test results of the products of Experimental Examples 1-5;

[0163]

[0164] It can be seen from Experimental Examples 1-5 that when aluminum borate whiskers were not added in the preparation of the conditioning agent, the performance of the product deteriorated significantly. At the same time, when carbon nanotubes were not added, barium nitrate solution was not added, water was used instead of dopamine hydrochloride solution, and cerium oxide was not added, the performance effect of the product was poor. Therefore, when aluminum borate whiskers are combined with the specific raw materials of the present invention, the performance effect of the product is the most significant. When other raw materials are combined, the effect is not as obvious as that of the present invention. The whisker-like structure of aluminum borate whiskers is combined with the tubular structure of carbon nanotubes to enhance the interfacial property and load-bearing property between the raw materials, thereby bearing and harmonizing the modified mullite sintered body, and further dispersing and formulating the modifier based on the mullite body in the system better, and further enhancing the performance effect of the product.

[0165] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention.

[0166] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment contains only an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A wear-resistant ceramic clay, characterized in that: It includes the following raw materials in parts by weight: 35-40 parts of diatomaceous earth, 15-20 parts of silicon carbide, 8-12 parts of a modifier based on mullite modification, 5-8 parts of a modified cordierite agent, 4-7 parts of alumina, 4-7 parts of calcined talc, 3-5 parts of potassium feldspar and 30-35 parts of water; The preparation method of the conditioning agent based on mullite body modification is: S01: preheating mullite at 65-70°C for 1h, then mixing and sintering 4-7 parts of preheated mullite, 3-5 parts of lanthanum oxide and 2-5 parts of nano-titanium dioxide by weight for 1h, the sintering temperature is 550-570°C, and cooling to room temperature after sintering to obtain a mullite sintered body; S02: Prepare the modified solution as follows: S021: irradiate the basalt fiber in a proton irradiation box for 1 hour at an irradiation power of 350-400W. After the irradiation, add the irradiated basalt fiber into a sufficient amount of acid solution and mix well, then wash, filter and dry; S022: Add 2-5 parts of metakaolin and 1-3 parts of yttrium nitrate solution to 5-8 parts of sodium lignin sulfonate solution by weight, then add 3-4 parts of basalt fiber treated with S021, stir well, and obtain a modified solution; S03: The mullite sintered body and the modified liquid are stirred and modified at a weight ratio of 2:5, the stirring speed is 550-750 r / min, the stirring is performed for 20-30 min, and the stirring is completed to obtain a modified mullite sintered body; S04: the modified mullite sintered body and the regulating and fixing agent are mixed and ball-milled in a weight ratio of 5:

3. After the ball-milling is completed, the mixture is filtered and dried to obtain a regulating agent based on mullite body modification; The preparation method of the regulating effect-fixing agent is as follows: A 5-8% mass fraction dopamine hydrochloride solution is prepared, and then 2-4 parts of aluminum borate whiskers and 1-3 parts of cerium oxide are added to 5-8 parts of the dopamine hydrochloride solution by weight, and then 2-3 parts of carbon nanotubes and 0.5-0.8 parts of barium nitrate solution are added and mixed thoroughly, and finally filtered and dried to obtain a regulating and fixing agent; The preparation method of the modified cordierite agent is: S11: placing the cordierite in a sufficient amount of hydrogen peroxide solution for treatment at a temperature of 50° C. for 1 hour, washing with water after the treatment is completed, and then treating it in a potassium permanganate solution for 2 hours at a temperature of 52° C. After the treatment is completed, washing with water and drying to obtain pretreated cordierite; S12: adding 1-3 parts of silane coupling agent KH550 and 2-4 parts of sodium stearate to 5-8 parts of 5% chitosan solution by weight, and then adding 2-4 parts of boron nitride, and mixing them thoroughly to obtain cordierite liquid; The pretreated cordierite and cordierite liquid are fully stirred in a weight ratio of 3:5, and finally filtered and dried to obtain a modified cordierite agent.

2. The wear-resistant ceramic clay according to claim 1, characterized in that: The wear-resistant ceramic clay comprises the following raw materials in parts by weight: 37.5 parts of diatomaceous earth, 17.5 parts of silicon carbide, 10 parts of a modifier based on mullite modification, 6.5 parts of a modified cordierite agent, 5.5 parts of alumina, 5.5 parts of calcined talc, 4 parts of potassium feldspar and 30-35 parts of water.

3. The wear-resistant ceramic clay according to claim 1, characterized in that: In S021, the acid solution is a sulfuric acid solution with a mass fraction of 5-8%.

4. The wear-resistant ceramic clay according to claim 1, characterized in that: In S022, the mass fraction of the yttrium nitrate solution is 5-8%; the mass fraction of the sodium lignin sulfonate solution is 2-5%.

5. The wear-resistant ceramic clay according to claim 1, characterized in that: In S04, the ball milling speed of the mixing ball milling treatment is 1150-1250 r / min, and the ball milling is performed for 1 hour.

6. The wear-resistant ceramic clay according to claim 1, characterized in that: The mass fraction of the barium nitrate solution is 4-6%.

7. The wear-resistant ceramic clay according to claim 1, characterized in that: In S11, the mass fraction of the hydrogen peroxide solution is 2-5%; the mass fraction of the potassium permanganate solution is 5-7%.

8. A method for preparing wear-resistant ceramic clay, for preparing the wear-resistant ceramic clay as claimed in any one of claims 1 to 7, characterized in that: The following steps are involved: Add diatomaceous earth, silicon carbide, a regulator based on mullite modification, a modified cordierite agent, alumina, calcined talc, potassium feldspar and water into a ball mill, and ball-mill at a speed of 1500-1800r / min for 35-40min. After the ball milling is completed, wash and dry the mixture, and then put it into a pressing machine for molding. Press for 1h at a pressing pressure of 30MPa. After the pressing is completed, sinter it at 1150-1200℃ for 1h. After the sintering is completed, wear-resistant ceramic clay is obtained.

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