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A method for improving the molding performance of pottery clay or porcelain clay

A technology of molding performance and porcelain clay, which is applied to household appliances, other household appliances, clay products, etc., can solve the problems of changing the properties of the clay, large discharge pressure, and reduced firing efficiency.

Active Publication Date: 2021-03-16
湖南筑巢智能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The biggest feature of this method is to try to change the performance of the mud to make it close to the added organic polymer. The price is that a large amount of organic polymer resin must be added to obtain the mud with ideal performance. The disadvantages are obvious: too much The use of polymers will inevitably lead to high cost of mud raw materials, and at the same time, it will cause a lot of debinding pressure on the firing of ceramics in the later stage, as well as a sharp increase in energy consumption, a decrease in firing efficiency, and an increase in environmental protection pressure.

Method used

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  • A method for improving the molding performance of pottery clay or porcelain clay
  • A method for improving the molding performance of pottery clay or porcelain clay
  • A method for improving the molding performance of pottery clay or porcelain clay

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0115] The bone china clay produced in Shandong has an original water content of 23.2%, a plasticity index of 2, and a plasticity index of 2.5. The clay is high-toughness hard clay, and the yield strength is 23.4KPa. The compressive strength of the blank is 357.4KPa, and the fired density is 98.5%.

[0116] Treat the clay as follows:

[0117] A) Soak the porcelain mud with water for 24 hours, drain the remaining water and add a small amount of water until the total amount is 30% of the weight of the original mud, and beat until the mud is uniform;

[0118] B) adding water glass (i.e. sodium polysilicate) accounting for 6.5 ‰ of the weight of the original mud and trisodium phosphate accounting for 6.5 ‰ of the weight of the original mud in the mud, beating evenly with a beater to obtain a dispersed mud;

[0119] C) adding a solution of sodium polymethacrylate to the obtained dispersion mud, sodium polymethacrylate accounts for 1‰ of the weight of the original mud, shearing and...

Embodiment 2

[0124] The white porcelain clay produced in Liling, Hunan Province has an original water content of 24.5%, a plasticity index of 3.1, and a plasticity index of 2.9. The density of the porcelain obtained by firing the mud-shaped green body is 97.9% of the theoretical density, and the compressive fracture strength of the green body is 168KPa (containing the reinforcing agent sodium humate).

[0125] Treat the clay as follows:

[0126] A) Soak the porcelain mud with water for 24 hours, pour out the remaining water, add a small amount of water until the total amount is 25-32% of the weight of the original mud, and beat until the mud is uniform;

[0127] B) Adding NP-40 (nonylphenol polyoxyethylene ether) accounting for 5‰ of the weight of the original mud and anhydrous sodium carbonate accounting for 2.5‰ of the weight of the original mud to the mud, beating evenly with a beater to obtain a dispersed mud;

[0128] C) adding a solution made of 0.5‰ of lysine and 0.15‰ of polyacryl...

Embodiment 3

[0133] The black pottery mud produced in Changbai Mountain, Jilin Province has an original water content of 25.5%, a plasticity index of 2.1, and a plasticity index of 2.3. The mud is low-toughness hard mud, with a yield strength of 24.4KPa and a tensile deformation ratio of 145%. The density of the porcelain obtained by molding the green body by using the obtained modified porcelain clay and firing is 98.4% of the theoretical density, and the compressive fracture strength of the green body is 195KPa.

[0134] Treat clay as follows:

[0135] A) In a sealed state, submerge the clay with n-propanol and soak it for 24 hours. After pouring out the excess liquid, add 1% ethanol accounting for the dry weight of the original mud, so that the total amount of liquid is 25% to 32% of the weight of the original mud. until the mud is uniform;

[0136] B) adding polyethylene glycol 4000 accounting for 3 ‰ of the original mud weight and sodium dodecylbenzenesulfonate accounting for 1 ‰ of ...

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Abstract

The invention provides a method for improving the molding performance of clay paste or porcelain paste, which is used for performing partial curing treatment on slurry after raw paste dispersion treatment to form an optimized slurry internal structure by a mode of improving the interaction among micro-particles and fixing the structure. The method comprises the following steps: providing slurry ofraw paste which is clay paste or porcelain paste; adding a dispersing agent into the slurry of raw paste, and uniformly mixing to obtain dispersed slurry, wherein the dispersing agent is selected from one or more of an inorganic dispersing agent, an organic micro-molecular dispersing agent, an organic macro-molecular non-electrolytic dispersing agent and a polymerized electrolytic dispersing agent; adding a competitive adsorbent having a competitive relationship with the dispersing agent into the dispersed slurry, and uniformly mixing to obtain intermediate slurry; and adding a stabilizing agent into the intermediate slurry, and fixing the structure to obtain the clay paste or porcelain paste with improved molding performance. According to the clay paste or porcelain paste modified by adopting the method, the plasticity of the clay paste or porcelain paste can be improved, and the molding performance of the clay paste or porcelain paste can be improved.

Description

technical field [0001] The invention relates to the technical field of ceramic raw materials, in particular to a method for improving the molding performance of clay or porcelain clay. Background technique [0002] The molding of traditional ceramics is affected by many factors, resulting in a high probability of defects such as cracking and deformation, which makes the first-time yield of ceramic products low. Among them, one of the most important reasons is that the force between clay particles is unreasonable. After the molding process is mechanically affected by the mold, there is unreasonable interaction between particles in some areas, which leads to stress, which in turn leads to various defects and low yield. , of poor quality. [0003] In order to solve the above problems, the conventional thinking and method of the prior art is to put the molded green body in a moisturizing state for several days, and the force between the particles is reduced due to the slight di...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B33/02C04B33/13C04B33/04
CPCC04B33/02C04B33/04C04B33/1305C04B33/131
Inventor 郝金香贺平
Owner 湖南筑巢智能科技有限公司
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