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Quartz sand microcrystalline porous ceramic and preparation method thereof

A technology of porous ceramics and quartz sand, applied in glass manufacturing equipment, ceramic material production, manufacturing tools, etc., can solve the problems of poor bonding strength between porous ceramics and metal heating lines, poor strength of porous ceramic matrix, etc., and achieve high efficiency. Large-scale production, enhanced binding performance, and improved affinity

Pending Publication Date: 2022-05-24
SHENZHEN JIYOU TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The invention provides a quartz sand microcrystalline porous ceramic and a preparation method of the quartz sand microcrystalline porous ceramic to solve the technical problems of poor strength of the porous ceramic matrix and poor bonding strength between the porous ceramic and the metal heating circuit

Method used

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preparation example Construction

[0026] The present application discloses a preparation method of quartz sand microcrystalline porous ceramics, comprising the following steps:

[0027] 1. Quartz sand pretreatment and powder mixing

[0028] The high-purity quartz sand is dry ball milled, the ratio of material to ball is 1:1, and the ultra-fine quartz powder is obtained by sieving, and the sintering aid, modifier and pore-forming agent are added to the above-mentioned ultra-fine quartz powder in proportion, and the mixture is fully mixed. After homogenization, a mixed powder is obtained.

[0029] High-purity quartz sand (SiO2 content greater than 99%) is obtained by filtering and screening the cheap and easy-to-obtain common quartz sand raw materials on the market. By dry ball milling the high-purity quartz sand, a coarse material with a ball-to-ball ratio of 1:1 is obtained. material.

[0030] Then, the above-mentioned coarse material is passed through a 300-mesh sieve to obtain ultra-fine quartz sand powder...

Embodiment 1

[0045] The preparation method of the quartz sand-based porous ceramic material of the present embodiment is as follows:

[0046] Quartz sand pretreatment and powder mixing

[0047] The high-purity quartz sand is dry ball milled, the ratio of material to ball is 1:1, and it is passed through a 300-mesh sieve to obtain ultra-fine quartz powder. Add sintering aids B2O3, CaCO3, modifiers TiO2, CuO to the above-mentioned ultra-fine quartz powder, and make Porosity agent PMMA, by mass percentage, quartz powder 40%, B2O3-3%, CaCO3-5%, TiO2-5%, CuO 3%, K2O-4%, PMMA-40% with a particle size of 50um, thoroughly mixed Mixed powder is obtained after homogenization;

[0048] Quartz sand porous ceramic molding

[0049] The above mixed powder is mixed with the polyvinyl alcohol aqueous solution, and after stirring and mixing uniformly, the dry pressing method is adopted to form the ceramic green embryo;

[0050] Wherein, the mass percentage concentration of the polyvinyl alcohol aqueous s...

Embodiment 2

[0056] The preparation method of the quartz sand-based porous ceramic material of the present embodiment is as follows:

[0057] Quartz sand pretreatment and powder mixing

[0058] The high-purity quartz sand is dry ball milled, the ratio of material to ball is 1:1, and it is passed through a 300-mesh sieve to obtain ultra-fine quartz powder. Add sintering aids B2O3, CaCO3, modifiers TiO2, CuO to the above-mentioned ultra-fine quartz powder, and make Pore ​​agent PMMA, by mass percentage, quartz powder 40%, B2O3-3%, CaCO3-5%, TiO2-5%, CuO 3%, K2O-4%, PMMA-40% with a particle size of 100um, thoroughly mixed Mixed powder is obtained after homogenization;

[0059] Quartz sand porous ceramic molding

[0060] The above mixed powder is mixed with the polyvinyl alcohol aqueous solution, and after stirring and mixing uniformly, the dry pressing method is adopted to form the ceramic green embryo;

[0061] Wherein, the mass percentage concentration of the polyvinyl alcohol aqueous solu...

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Abstract

The invention provides quartz sand microcrystalline porous ceramic and a preparation method thereof.The preparation method comprises the steps that high-purity quartz sand is subjected to dry ball milling, superfine quartz powder is obtained through screening, then a sintering aid, a modifying agent and a pore forming agent are added, mixed powder is obtained after sufficient and even mixing, the mixed powder and a polyvinyl alcohol aqueous solution are mixed and stirred to be even, and the quartz sand microcrystalline porous ceramic is obtained. Forming by adopting a dry pressing method to obtain a ceramic green body, drying the ceramic green body, and sintering at high temperature to obtain the quartz sand microcrystalline porous ceramic. The quartz sand which is low in price and easy to obtain is used as a base material, the sintering aid is added to remarkably reduce the sintering temperature, the modifier strengthens the three-dimensional framework of the porous ceramic and increases the strength of the porous ceramic, and the process is further controlled to prepare the microcrystalline porous ceramic which is high in porosity, high in strength and uniform in pore distribution. When the microcrystal porous ceramic is applied to an aerosol generating device, the taste reduction degree of an aerosol matrix is excellent, the atomization amount is full, and the oil absorption and storage capacity is high.

Description

technical field [0001] The invention relates to the technical field of atomization devices, in particular to a quartz sand microcrystalline porous ceramic and a preparation method thereof. Background technique [0002] Most of the existing technical solutions for porous ceramics use diatomite as the main matrix material, because diatomite itself has micro pores, and some original pores can be retained after sintering. . [0003] On the one hand, thanks to the micro pores of diatomite itself, the porosity after sintering is guaranteed, but the main SiO2 component in diatomite belongs to amorphous SiO2, and the crystal transformation increases during the high-temperature firing process. The strength is limited, and the ceramic matrix is ​​prone to breakage and powder drop during assembly. [0004] On the other hand, the ceramic substrate with diatomite as the main body has poor bonding force with the metal heating film, which easily leads to the separation of the film substr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C10/00C03C11/00C03B19/06
CPCC03C10/00C03C11/00C03B19/06Y02P40/60
Inventor 胡勇齐齐会龙聂革宋文正李俊辉
Owner SHENZHEN JIYOU TECH CO LTD
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